Unity Game Development : Beginner to Pro

1. Unity Game Development : Beginner to Pro course Outline: My friends, my name is Roan Masud. Welcome you all to gaming with Unity tutorial series. Let me take you through what all topics are we going to cover in this particular tutorial series. So we're going to start with Unity installation and set up here. Furthermore, we are going to proceed with creating first project and configuring visual studio with Unity. This will cover creating a C sharp script in Unity, understanding the structure of a C sharp script, and finally printing Hello world in Unity console. Furthermore, we are going to proceed with data types, variables, and operators in C Sharp, wherein we are going to cover a operator, relational operator, logical operator, and conditional operator. We're also going to study control flow statements in CR, which will cover decision making statements, switch statements, and looping statements. We are also going to cover a very important topic in R, which is collections in CR, which will include list, sorted list, dictionary array, list has table and stack. Later we are going to understand UI in Unity, which will include Canvas, text, image buttons, Scroll View, Inputfield, slider, and Anchor in Unity. Proceeding further, we are also going to learn about Unity events, which will have event functions and your custom functions as well. Then we'll have delegates in Unity which will cover single cars, delegate, multicasts, delegate and delegate events as well. Furthermore, we are going to understand Unity input system, which will have keyboard inputs, mouse inputs, and access inputs. Then we'll learn about rigid body and collisions will be introduced to rigid bodies. We'll have an example of a rigid body. Create a floor in a game and move a sphere using a rigid body or a rigid body attached to a sphere. Again, in collisions will be introduced to colliders and collision. We'll have Example 1.2 to understand colliders and collision. Furthermore, we are going to introduce to animation. Then we'll have animating a sprite part one, part two, part three, and part four. Later we'll understand or learn to animate a three D character. We'll have part one, part two, and part three for the same. Finally, to conclude the series, we are going to create a game called Knock the Cans in Unity, wherein we are going to knock the cans down using a spear or a ball game object. All right guys, this was a brief overview for the series. Let's begin with installation of Unity in the next session. Thank you so much, guys. I will see you in the next session. Thank you so much. 2. Introduction to Unity & instatllation: Good evening guys. My name is Rohan S. This is session two in which I'm going to tell you about Unity game engine, and how to install Unity. So what is Unity? Before we start, Let's know Unity is a cross platform game engine which is used to create 2d3d VR and AR games. Okay, so it's a cross platform game engine. It supports multiple platforms such as Windows, Mac operating system, Android and IOS. Why Unity? Okay, now there are other platforms as well. There are other IDs as well on which we can work on. But why Unity? Why Unity is preferred so much? Why a lot of developers are using Unity Statistics, say as of 2020, Unity made applications were used basically by 2 billion monthly active users, with 1.5 million monthly creators. Okay, So 2 billion players were actually playing the game made using Unity. Also, there were 1.5 million monthly creators. So among all the creators working on different platforms to create games, 1.5 million monthly creators used Unity as their ID, okay, as their game engine, to create any kind of game. Whether it could be a two day game, it could be a three D game, it could be a VR game, it could be an AR game. Also, Unity Engine comes with a combination of multiple assets. Now there are some inbuilt assets. Also, you can download assets from the asset store. How do I install Unity? Where do I get this Unity from? Is it freely available? Or what should I do if I want to start with Unity? Okay, basically to start with Unity, you have to simply go to Unity download page. So there is a link which I'm going to be dropping inside this presentation, inside this session, okay? And you can go on this link and follow the procedure, basically, this is the link for that, okay? So it's ttpsstoverdtunity.com slash download. So there is a button which is going to be download Unity Hub. Before downloading Unity engine, you need to download Unity Hub. Click on Download Unity Hub button. What is the next process? Okay? You open Unity Hub and then you find a tab inside the Unity hub which is install Tab. You click on the install, you choose Installed. And then once you click on the install tab, you will find an ad button in the install section of the Unity hub. Okay? Click on the ad button and you will see something like this. Okay, this is when you choose installs in Unity Hub. Okay, over here I have clicked on installs. And then you can see on the extreme right there is a button which is an ad button. You just need to click on that. And once you click on the ad button, this is what is going to open. Okay? You just need to select the version, what version of Unity you want to download. And then you need to follow the steps to install Unity editor or Unity Engine onto your laptop or your Dextop. That's it guys. Thank you so much for the session. Thank you so much. 3. Create my first 3D project in Unity: Good evening guys. My name is Rohan Vsdev, and in this session I'm going to be teaching you how to create three D project in Unity. Okay, so I have already opened my Unity Hub. My version for Unity hub is 2.4 0.5 Okay, so there is new version available which is 3.2 0.0 but I'll be using for the demonstration purpose version 2.4 0.5 So how to create a project in Unity. Now in the last session we saw how to install Unity Engine and also Unity Hub. So I've already opened my Unity hub to create a project. I just have to go here to create a project which is new. Okay, I just have to click here. I have to select my version. For the purpose of the demonstration, I'm going to be using Unity version 2,019.3 Okay, I just have to click on this. Right now, I want to create a three D project. Okay, Here I will have to put the name for the project. Okay, I'll just change the name here. First, Unity Demo. This is the name of my project. The location on which my project is getting stored is D Drive. You can change the location if you want to store the project in drive or whatever location you want to store your project. I just have to click on this Create button. Okay, now this will open your Unity Engine. This is the sample scene that has been created when you create a Unity project, rename the name of the senior will change the name of the scene. Basically how to do that. Okay, just have to right click here on the sample scene. Select Save Scene as from here. Okay, save this scene into the scenes folder. Okay, so my first scene, let's just save it. You all can see here the name of the scene has been changed now. It's my first scene right now. Let's go into the scenes. And here is our scene, my first scene. Okay, that's it guys. Thank you so much for the session. See you in the next session. 4. Configure Visual Studio in Unity and get ready for scripting: Good evening friends. My name is Rohan Asda and will be telling you how to configure visual Studio with Unity. So what is Visual Studio? It is an integrated development environment, which is IDE, which is developed by Microsoft, used to develop user interfaces, web applications, mobile applications, and cloud based applications. Also, the code can be written in C, Sharp, C plus plus, Visual, Basic, Python, and many other languages. Altogether, Visual Studio supports 32 languages. Visual Studio is also available for both Windows and Mac operating system. So there are three additions for Microsoft Visual Studio, and they are as follows, as we can see here. First one is the Community Edition, which is a free version. Any individual developer can basically develop free or paid applications using that. The features are more or less similar to the Professional Addition. Professional Addition is a paid and commercial version. You need to pay if you want to download or install. Basically, they provide you with a free trial. But once a free trial is over, then you need to pay for Professional, both for professional and enterprise additions. What are the steps, basically, to install Visual Studio in Unity? Okay, the first step is to simply go on to Microsoft Visual Studio download page. I have dropped in a link here. This is the link for that. Now, next, next to do, once you go on this link, once you go on this link, you will find a button which is Download Visual Studio. You just have to click on the button, which will take you to another page. Okay, where you can actually choose the version that which visual studio you want to install or download. Once you click on previous button, then that will take you to which is sttpsvisualtudiotmicrosoft.com slash downloads. Okay, And this is how the page will look like. This is Visual Studio 2022. There are other options as well. If you want, you can download Visual Studio 2019. Also, once you come here on this page, on the download page for Visual Studio, okay, you need to click on the free download for community version, because we are going to use a free version here. We are not going to use professional or enterprise versions because a paid version. So we're going to click on button, which is free download. And once you click on this button, what will happen next? It's very simple, will start installing the installer. So the installer for visual studio basically will get installed, which will be an EX file. So you just have to click on that EX file and start the installation process. Once the installation process gets started, you will see something like this, this particular screen. And in this screen you will see a work load stab. Here, you just have to select a work load stab. Okay, in the work load stab, you have to check game development with Unity here. Okay, this is very important part while installing dual studio for Unity. So you just have to check this. And then once this is clicked or checked, you just have to click on the install button to proceed with the installation process. Create a new project using Unity Hub. Once the project is created, you will find edit option. Inside the Unity editor, you just have to click on the Edit option and then you have to select the Preferences option. So once you click on the Preferences option, it will open a pop up window, which will be an external tool. Here, it will open something like this. Okay? Now inside the Preferences window, you will have to select external tools here. Okay? So once you click on the external tools, what you will have to do is for the external script editor, you will have to attach version which you have just downloaded which was studio 2019. So once this is done from here on, what we need to do is you need to go onto your Windows tab inside your Unity editor and select Package Manager. Once you click on that Package Manager in the window stab, you will see a screen like this and you will have to type in Visual Studio co inside here in the search box or just by typing visual, you will find package will be named by Visual studio code editor. You just have to check on it. And then once this process is done, you're free to actually use Visual Studio or C Sharp inside your Unity editor. Thank you guys for the session. I'll see you in the next session. Thank you so much guys. 5. Create my first C# script in Unity: Good evening guys. My name is Roan. Are in the last session, we all saw how we installed Visual Studio into Unity. Now in this session, I am going to be telling you how to actually create a C sharp script inside Unity. Firstly, we have an Assets folder here. You can click on the Assets folder and choose the Assets folder. Now to keep everything organized and keep all the scripts inside one folder, what we are going to do here is we are going to create a folder inside this folder. Okay, We have to write click here and then click on Create. Then you need to choose folder option here. We don't want it to be new folder, so we will just rename it as scripts. Okay, Now let's open the scripts folder. Okay? Double click on the scripts folder. How to create a script. Now, inside the scripts folder, it's very simple. Just have to write, Click here with your mouse and then go to Create. Again, last time when we created a folder, we chose folder option. Okay. But this time we're going to create a script. We have to sharp script. Just click on the C sharp script, okay. Now you need to rename it. By default, the name of the script will be new behavior script, but we don't want it that way because we want to rename the script. Now let's rename it as my first script. Okay, your script is created now. Now let's just click on the script to open it. That's a Guys, see you in the next session. Thank you so much guys. 6. Understanding the flow & structure of a C# script - Part 1: Good evening guys. My name is Rohan Dev. In the previous session, we saw how to create a C sharp script in Unity. As we all can see here, this class in Unity is blueprint for your object. Now, all the scripts in Unity will always start with a class declaration. And this class is automatically created when you create a C sharp script inside Unity. The name of the class as we all can see here, my first script will be always same as the name of your script. When we created a script last time, the name of the script that we kept was my first script, so will be the name of the class, so it will always be same. What is system dot collection? System dot collections, or Generic And Unity Engine, Basically these are all namespace, which is a collection of classes. Unity, the monobehavior class here, including all other core Unity features, are in Unity engine namespace. Okay, so Unity Engine basically will have all the Unity core features and monobehavior class as well. Generally, when you create a script, there are five important aspects in the script. So what are these aspects? Firstly, this public keyword, then comes your class. The fourth is the name of the script, or the name of the class. Then comes the colon and the mono behavior. Let's first understand what is public here. For instance, suppose there are two scripts. And you want one script to interact with another script. By making anything public means it is accessible by another script. Also, this particular class will be accessible by other class or by another Unity script as well. Now we all can see mono behavior here. What is mono behavior? Mono behavior is a base class for all the scripts, basically. And this colon means it inherits from, it simply means, okay, all the scripts that we create in Unity C Sharp are inherited from monobehavior class. Here in the next session, I'll be telling you what are these functions, which is void start and void update here. Okay, these are also automatically created when we create a Unity C sharp script. Thank you for the session. I'll see you in the next session. Thank you so much. 7. Understanding the flow & structure of a C# script - Part 2: Hi guys, My name is Rohan Vasudev. In this session we are going to see what is void start and void update. Let's see what is void first. Void is the return type, so in this case, the start function here created, it's not returning anything. Start function is basically called once the frame of the scene is created. One frame is just one still image. All these images together in rapid succession, will create a motion for the game. Start is called once the first frame of the game is created. It is only executed if the script is enabled. If the script is not enabled. If it is disabled and the start function won't get executed at all. It is also called once in life cycle of the shaft script. So there is a life cycle for Unity script start function will be called only once in the life cycle. What is start function used for? Start function is used for initializing object properties or variable. Any variable you want to initialize or any object property you want to initialize, you can always initialize inside the start function. Let's talk about update function here. Again, we have void here which is a return type for the update function. So this update function is not going to return anything. Update function is called only after the start function has executed. Update function runs every frame of the game or the seen. Okay? So it will be called every frame execution of the update function depends on the frame rate of the game. Frame rate simply means that how many frames are generally created or called every 60 seconds or so? Generally, what happens here is the higher the frame rate of the game, the time interval between the update function will be low update function, the calling of an update function to completely depends on the frame rate of your game. That's it guys. Thank you for the session. I will see you in the next session. 8. Write first code in C# & print 'Hello Code": Hi guys, My name is Rohan Vasudev and in this session I'm going to tell you how to print Hello code inside Unity console. So to begin with, we will have to create an empty game object. Everything in Unity is basically a game object. So in this case, we will have to create an empty game object here. So how do we create an empty game object here? Okay, so for that purpose, just right click on your scene, which is my first scene. Choose game object here, and choose Create Empty. So this way we will create an empty game object. The name of the empty game object by default will be game object. We will just rename it my first game object. We will attach the script, which is my first script here, which we created in the previous sessions, to this game object. We don't need an update function here. Let's just remove this function because we are going to write our code inside the start function. Let's start with writing a code here. I'm going to use debug log function in Unity to print hello code. This ends with a semicler. Debug dot log basically is a function inside Unity in which you will have to pass a string here and this will print hello code inside the Unity console. Let's just save the script. Just click on my first game object and choose console here. Just click on Add Component, button here and add the script to this empty game object. Okay, click on Add Component and type in my first. In the search, you will find the script. Click on my first script and the script is attached to your empty game object. In our case, it is my first game object. Okay, now save the scene and run by clicking on this play button here. And here we have printed Hello code inside Unity console. That's it guys. Thank you so much for the session. I will see you in the next session. Thank you so much. 9. Understanding data-types & variables in Unity C#: Hi friends, my name is Rohan. Sure. And in this session I'm going to explain you data types and variables in C Sharp and Unity. A data type specifies the type of data. This data could be a string, or an integer, or a bullion, or a float, or double. Again, depending on the accepted value or the data type, various operations can be performed on that particular data string. Data type is used to store sequence of characters, numbers, characters in the form of words or sentences. A value of a string data type is enclosed within double codes. It is always put inside double codes. The another data type is your data type, which is used to store 32 bit integer numbers. The numbers are generally whole numbers which will include positive and negative numbers as well. Again, we have a float data type, which is used to store floating point numbers, is also used to store floating point numbers. But the only difference between a float and double is that double stores larger size numbers than the float. Again, we have a whole datatype which is generally used to store true or false values, generally used to store information. This information could be a name of the player, or a score, or a hell. Now, value assigned to a variable can always be altered, modified during the execution of a program. Again, when a variable is created, some space in memory is allocated. Declaration of a variable always starts with a data type followed by the name of the variable. Here is my editor. We have already created an empty game object. I have renamed that empty game object to variables object. Again, I have created a script. Here, the name of the script is my variables. Let's open the script and declare some variables inside the script. Firstly, let's declare a string variable. Okay? First name equals to, let's assign a value to the variable. Okay, Danny, in declaration of a variable, string is the data type, first name is the name of the variable, and Danny is the value assigned to the variable, first name. Okay. Now let's declare a variable with data type. Okay, Let's name it as number one. Let's assign a value. Let's declare a variable with float data type. Let's name it as number two. And let's assign a value 10.5 Now let's declare a variable with a data type double number three equals to. Lastly, let's declare a variable with a bull data type val. My val is the name of the variable. Let's assign the value true to the variable variables that we have declared here. We are going to print those variables inside the console. Let's start printing the values for the variables. Okay, we just need to pass the name for the variable here. Let's save the script, and let's attach this script to the game object which we have created here, which is variables object. Okay, here it is. So that's it guys. Thank you for the session. I will see you in the next session. Thank you so much. 10. Introduction to the Operators in Unity C#: Hi guys. My name is Rohan Vasudev and in this session I'm going to explain to you what are operators in Unity. Sharp operators are special simples or a character that perform some actions on operands or variables basically represents an action or a process that we do on variables or operands. Operators are foundation for any programming language. Now without the existence of operators, any programming language would basically be incomplete. Now what are types of operators? How many types of operators are there in Unity? Sharp? Let's see. First is your arithmetic operators. Then we have relational operators, then we have logical operators, then we have assignment operators and conditional operators. Let's first see what are arithmetic operators? What are arithmetic operators? Arithmetic operators are generally used to perform mathematical operations on variables or operands. Now, there are some types of arithmetic operators. The first is your addition operator. Addition operator is used to compute additions of two operands or variables. With this operator, we can basically add two operands or variables. It can also be used for concatenation of two string variables. Example, if we have an int a equals to five and int B set to the value of ten, then the output for the addition would be 15. It basically computes a basic addition of two variables or operands. Next is your subtraction operator. Subtraction operator is used to subtract right hand operand from left hand operand again. The third is your multiplication operator, where we actually compute multiplication of operands or variables. We have division operator which divides your left hand operand by its right hand operand. Again, is your modulus operator which returns remainder when left hand operand is divided by right hand operand. So if you perform division, then the remainder which you get would be your output inside the console. Now let's get into the Unity editor and let's see how we actually perform some actions using arithmetic operators. 11. Understanding Arithmetic Operators & it's usage: Guys, we are into Unity Editor. Now as you all can see, I've already created an empty game object which is operators object. And again, I've created a C sharp script which is arithmetic operators. Now to perform some actions or calculation, let's open the script which we have created, which is arithmetic operators in A equals to five, in B equals to ten. Okay, bug dot log A plus, this is your addition operator. This is a commented code. Basically, it's not going to run debug log. Okay, let's subtract a from B inus debug log d here, here is the output. Let's continue the topic operators in the next session. Thank you so much. 12. Understanding Relational Operators & it's usage: Hi friends. My name is Rohan Vase. In the last session, we saw arithmetic operators. In this session, we are going to learn about relational operators. What are relational operators? Relational operators are used to compare two values or variables, or operan. Now, what are the types of relational operators? The first relational operator is equal to equal to operator is used to check whether two values are equal or not. If both the values are equal, then it returns true. Or if they are not equal, then it returns false. For example, if we have two variables in A equals to five and in b equals to five, then the result will be bool. We are storing the value in a variable called result. Okay? We are checking here if both variables have the same values and how we are doing that. We are doing that using equal to operator, okay? In this case, five is equal to five, the output will be true now. Next is your not equal to operator, okay? Not equal to operator is used to check whether two values are equal or not. Now, if both the values are not equal, then it returns two, else it falls, then we have greater than operator. Greater than operator is basically used to check if the left hand operand is greater than the right hand operand. For instance, if we have a variable a whose value is set to 50 and a variable whose value is set to ten. Then the bol result for a greater than in this case will be two because 50 is greater than ten. Now let's move on to the next operator, which is less than operator. Less than operator is basically used to check if the left hand operand is lesser than the right hand up brand. In this case, we have set the value of A to 50 and a value of 210. A lesser than is obviously falls because 50 is not lesser than the output for this particular example will be falls. Again, we have greater than equal to, greater than equal to operator is used to check if the left hand oprand is greater than or equal to right hand brand. It will check for both the conditions whether it is greater than or equal to the right hand operand. The last relational operator will be or lesser than, equal to, less than equal to. Operator is used to check if the left hand up brand is lesser than or equal to the right hand brand. In this example, we are checking here the value of A which is set to ten, and the value of which is set to ten again. Okay, we are checking here if a is lesser than or equal to b, but in this case a is not lesser than it is equal to, it is obviously going to bring the output as true here. Now let's get into the editor and let's write a piece of code, and let's print the values in the editor. Okay guys, so I am in the Unity editor now, and I have already created an operator's object here. This is an empty game object. And also I have created a C sharp script, which is a relational operators script. I have named the script as relational operators and attach the script to the operator's object Here. Let's open the script and let's see the code. Okay, so we have already written a code here. We have declared a variable which is in a equals to five and a variable of data type inc, and the value of variable is set to ten. And we have declared a bool variable here, result. And we have not set any value here for the bool variable. Now inside the start function, firstly, we are checking whether a equals to equals to b. Then the value of the result will be assigned to the bull variable here. Because the output for this will be a Bo output, we are assigning that output to the bool variable result here. Lastly, we are checking if a is lesser than or equal to B or not, and the value is assigned to the result variable here. Now let's just run this code and let's see the output for the core. That's it guys, let's continue the operators in the next session. I will see you in the next session. Thank you so much. 13. Understanding Logical Operators & it's usage: Hi friends, My name is Rohan V. In the last session, we learned about relational operators. In this session, we are going to learn about logical operators. What are logical operators? Logical operators are used to combine two or more conditions or relational statements and returns pullion value. Logical operator will always pull value. What are the types of logical operators? First is your logical operator. Logical operator will check if all the conditions are true or not. It only returns true if all the conditions are true, and it returns false if either one of the relational statement or condition is false. Next, move on to the next logical operator, which is your logical operator. Logical or operator checks if at least one of the condition is true or not returns true. If one or all the relational statements or conditions are true and returns falls only when all the conditions are false. Then lastly, we have logical operator. Logical operator returns true if the condition is not satisfied. Now let's get into the Unity editor and write a piece of code. Okay guys, I'm in the Unity editor now, so I have already created operator's object here, which is an empty game object. Then I've already created a script here which is logical operators script and already attached the script to the operator's object. Let's open the script and see the core here. Guys, we have already declared a bull variable x here, whose value is set to be true. We have already declared a bull variable y whose value is set to false. We have already declared again a bull variable result. And we have not assigned any value to the result yet. Okay? Now inside the start function, this and operator here will check if both the variables variable x and y are true or not. But in this case variable x is true, that variable y is false. Hence, the output here will be falls. The output is then assigned to the pool variable result here, and is then printed in the console. The R operator here will check if at least one of the value for the variables x and y are true or not. In this case, the value for variable x is true, hence the output here will be true. The output is then again assigned to the bull variable result and is printed in the console here. Okay, Now we have already seen the result for the operator is false, but we are using a knot operator here. The knot operator returns true if the condition is false, hence the output here will be true, This value, This output is then assigned again to the variable result here, and is then lastly printed in the console using bug dot log function. Now let's run this code, and let's see the output inside the unity console. Let's run the code. Okay, that's it. And operator is giving me an output of false or Operator here is giving me an output of true and not operator here. Lastly, is giving me an output of true. So that's it guys. That's it for the session. I will see you in the next session. We'll continue on the topic operators in the next session. Thank you so much guys. 14. Understanding Conditional Operators & it's usage: My friends, my name is Rohan Masdev. In the last session, we saw logical operators. In this session, we are going to learn about conditional operators. What are conditional operators? Conditional operators has three operands. The syntax for conditional operators is as follows. The first will be your condition. Then there is a first expression, and then comes a second expression. Now, since this conditional operator has three operands, it is also called as a ternary operator. Generally, how it works is, firstly, it evaluates the condition here. Now, if the condition is true, the first expression is evaluated and becomes the output. And if the condition is false, the second expression is evaluated and becomes the output. Let's get into the Unity editor and let's write a piece of code. Okay guys, we are into Unity Editor. Now, I've already created an empty game object, which is operator's object. And I've already created a script which is conditional operator. Let's open the script, and let's see the code here. Now we have already declared a variable a which is of data type int, and the value is set to five. We have also declared variable of data type end, and the value is set to ten. We have also declared a bull variable result, and we have not assigned any value to it initially. Now inside the start function, we are checking if a is greater than. Basically, we have applied a condition here to check if a is greater than if the condition is true. Then the first expression which is true here, which is a bool true here, will be assigned to the variable result. If the condition is false, then the second expression which is false here, be assigned to the variable result here. The output will then be printed in the unity console using debug dot log function. Similarly, over here we are checking if a is lesser than B, the value of a is lesser than B. And if the condition is true, then the first expression which is true will be, will be assigned to the variable result. And if the condition is false, then the second expression which is false will be assigned to the variable result here and will be printed in the Unity console using debug dot log function. Let's run the code in the editor, and let's just see the output for the code, here it is guys. The output for the code, a greater than is false, a smaller than B is true. That's it guys. Thank you for the session. I will see you in the next session. Thank you so much. 15. Introduction to Control flow statement in Unity C#: Hi friends. My name is Rohan Dev, and in this session we are going to learn about control flow statements in Unity, C Sharp. What are control flow statements in C Sharp? Control flow statements are the statements that alter or change or modify the flow of a program or the code. It provides better control on the flow of execution of a code. More complex programs can also be written using control flow statements. Now the program is executed from top to bottom in the order it's written. Control flow statements can modify the flow of the execution of a program. The code which is executed from top to bottom can be modified using control flow statements. Thank you for the session. I will see you in the next session. Thank you so much. 16. Understanding if-statements in Unity C#: Hi friends. My name is Rohan Dev, and in this session, we are going to learn about Controlled Flow statements in Unity shop. Now, what are the types of control flow statements? The first is your decision making statements. We have switch statements, and then we have looping statements. What are decision making statements? Decision making statements is similar to that of making decisions. In your real life, it will execute certain block of code if the condition is true or is satisfied. The if statement checks for the condition. If the condition is true, then the block of code is executed, otherwise it is not executed. Let's get into the Unity editor and let's write a piece of code for an if statement. Guys, we've already declared a variable player health here, which is of data type end, and the value is set to 30. Inside the start function there is an F condition, and we are checking whether player health is lesser than 50 or not. If the players health is lesser than 50, then we are going to print in the console, Players health is to look. So we have our output here inside the Unity console. Thank you for the session. I will see you in the next session. Thank you so much. 17. Understanding if-else statements in Unity C#: Hi friends, My name is Rohan Dev and in this session we are going to learn about control flow statements in Unity. C sharp. If statements checks for the condition. And if the condition is true, then the block of code inside the if statement is executed. But what if the condition is false? In that case, the code inside the L statement will be executed. The L statement tells the core what to do if the condition is false. Again, we have declared a variable of data type int, which is player health, and the value is set to 70. Inside the start function, we are checking if the players health, the value of player health is lesser than 50 or not. If the condition is true, then we are going to print players health is too low inside the Unity console. And if the condition here is false, then Players health is good will be printed inside the Unity console. Guys, here it is. Here is the output, Players health is good. Thank you for the session. I will see you in the next session. Thank you so much. 18. Understanding if-else-if ladder statements in Unity C#: Hi friends. My name is Rohan Dev and in this session we are going to learn about control flow statements in Unity C sharp. If ladder statement checks for each if condition, all the statements are checked from top to bottom. First condition will be checked first, then the second condition will be checked, then it moves on to the third and so on and so forth. The code inside the if statement is executed which evaluates to be true. Only the code or the block of code inside the if L statement will be executed, which will be true. If none of the if conditions are true, then the last L's block will be executed here. Now the player health is set to the value of 50. Inside the start function, we have an if condition. Inside the if condition, we are checking where the player's health is greater than equal to 80 and player health is smaller than or lesser than equal to 200. And if the condition is true, then we are going to print players health is super. If the condition is falls here, then it moves on to the L statement here. Now again, it checks for player health greater than equal to 60 and player health is smaller than equal to 79. Now if the condition is true here, then this block of code will be executed. Otherwise, if it is false, then it moves on to the next statement, which is player health greater than equal to 40 and player health lesser than equal to 59. Again, if the condition is true here, then the block of code will be executed and players health is not good will be printed in the Unity console. If the condition is false here, then it moves on to the L statement. And finally, if all the conditions falls here. Then lastly, code inside the L statement, players health is in a bad state, will be printed in the Unity console. Now let's run the code and see the output. In the Unity console, players, health is not good, so here it is. Here is the output. Thank you for the session. I will see you in the next session. Thank you so much. 19. Understanding switch-case statements in Unity C#: Friends, my name is Rohan Dev. In the last session, we spoke about decision making statements. In this session, we are going to talk about switch statements. What are switch statements? Switch statements are an alternative for FLSA ladder statements. Switch case statement is a selection statement. Here is the syntax for a switch case statement wherein we have a switch keyword and then we have to put the expression inside the bracket, and then we have cases. Now the block of code or statement is executed if the expression matches with one of the case or expression value. Again, we have a break keyword here. Now this break statement is used to move out of the switch once the expression matches with one of the cases, Once the value for the expression matches with the value for the case, then the break statement is used and the switch is ended. The switch will continue to check for all the cases until the break statement is found or the switch ends. Now lastly, if none of the case matches with the expression, then the last default is executed and the block of code inside the default case is printed or executed. Again, the switch is ended using the break statement in the default case. Now let's get into the Unity editor and let's write a piece of code. Now guys, we are here into Unity editor. We have created an empty game object. We have also created a shaft script. And the name of the script is Switch Case. Let's open the Switch Case script. And let's have a look at the code side. The script, we have already declared a variable, player's health, and the value is set to 20. Inside the start function, we have already declared switch case players health. Here is an expression case ten will check if the value of plays health is equal to ten or not. If the value of plays health is equal to ten, then the block of core which is case ten is executed, will be printed in the Unity console and the break statement will end switch. If the value does not match with the expression, then it will move on to the case 20. Case 20 will check if the value of flares health is equal to 20 or not. If the value of flares health is equal to 20, then the block of core which is case 20 is executed, will be printed in the Unity console and the break statement will end the switch. If the value of players, he is not equal to 20, then it will move on to the default case. And the default case is executed will be printed in the Unity console. Lastly, the break statement will end the switch here. Here is the output case, 20 is executed. Thank you so much for the session. I will see you in the next session. Thank you so much guys. 20. Understanding loops in Unity C#: Hi friends, My name is Rohan Vdv. In the last session we saw switch statements. In this session, we are going to learn about loop control segments. So, what are loop control statements? Okay. Generally, loop control segments are used when you want a statement or a block of code to be executed multiple times. Again, depending on the conditions to be evaluated. The condition to be evaluated needs to be true for the executions of the statements or block of code inside the look so the condition has to be true if you want these statements inside the loops to be executed multiple times. What are the types of loops we have? Here we have y loop, for loop, and to y loop. Let's have a look at a Y loop. What is a Y loop? Okay, the condition is applied at the beginning of the loop loop. Variable initialization is done before and outside the loop. So the variable which you're going to initialize, it's going to be outside the loop and not inside the loop. Now, the block of code inside the loop will be executed till the condition is true. And once the condition becomes false, then the loop will be exited or terminated. Here is the syntax for a wide loop. First is your loop variable initialization. This is where you initialize the variable which is outside the Y loop. Then we have a Y loop, and then we have a condition inside the brackets for a wide loop. Now inside the Y loop we have a block of code to be executed, and once the block of core is executed, we do increment or decrement of a loop variable. Let's get into the Unity editor and let's write a piece of code to execute a loop. Okay guys, I'm here in the Unity editor. I've already created an empty game object, which is control flow object. And I've already created a C Sharp script. I've named the script as y loop. Also, I have already attached a script loop to the empty game object. Let's open the script here. Okay, inside the script, we have already declared a variable health of data type int, and the value is set to five. Inside the start function, we have also declared a loop in which we have a condition where we are checking whether value of health is greater than zero. Inside the y loop, we are printing the value of health, and once the value of health is printed, we are decrementing the value of health by one. The loop will run here till the value of health becomes one. Once the value of health is zero, the loop will be exited or terminated. Let's run the script. And let's see the output here. Okay, so here is the output. Player health is five, players health is four, players health is three, players health is two, and players health is one. Once we get the value of health to one, the loop is exited. The loop is terminated here. Now let's go and understand what is four loops. So what is four loop? Four loop is similar to that of y loop with a difference in tax, initialization of a loop variable. Testing of a condition increment and decrement of a loop variable are in one single line. Here, the block of code inside the loop will be executed again till the condition is two. And once the condition becomes false, then the loop will be exited inside the for loop script. Inside the start function, we have a four loop declared inside the brackets. For the four loop, we have already initialized a variable whose value is set to one. Then we have a condition in which we are checking whether value of I is smaller than five. Then again, the value of I is being incremented by one on every iteration. Inside the loop, we are executing a statement. In this case, we are just printing the value of in the Unity console using debug dot lock function. Let's run the code. Let's see the output here. That's it guys. Here is the output for loop. Play scores one, scores two. Play scores three, and plays four is four. Once the value of score is five, the loop is exited or terminated here. Okay, so what is a y loop? Okay, y loop is similar to y loop except that it checks the condition only after the statements are executed, executes the statements at least once before it checks for the condition. Now inside the script, we have already declared a variable, coins whose value is set to one. Inside the start function, we have declared a loop. Inside the block, we are printing the value for the coins. Once the value of coins is printed in the unity console, the value of coins is incremented by one. The Y loop will check for the condition here whether the value of coins is lesser than zero. If the condition is true, it will again get into the two block and the block of code will be executed. If the condition is false, the loop here will be exited or terminated. Let's run the code and let's have a look at the output in the Unity console. For this, here is the output guys number of coins, one. Since the condition was false, the loop is exited here. That's it guys. I will see you in the next session. Thank you so much guys. 21. Introduction to Collections in Unity C#: Friends. My name is Ro and Sudev. In this session, we are going to talk about collections in Unity C. What are collections? Collections are specialized classes that store series of values, or objects, or elements. With the help of collections, we can perform various operations. What are these operations that we can perform With the help of collections classes? We can store data, our values, we can update data, our values, we can delete data, our values, we can retrieve them, and we can also sort them. What are the types of collections? Collections are basically categorized into two collection classes, and they are as follows, generic collections and non generic collections. What are generic collections? Generic collections are defined in system Do collections dot generic space. Whenever we want to use generic collections, we have to use the name space system. Do collections generic defined by set of interfaces and classes. Interface is a blueprint of a generic. Collections handles data in a type safe manner and it eliminates the type mispatch. What is the type safe? Type Safe here simply means that one data type cannot be assigned to another data type. Here are some generic collection classes. First is your list contains data of a specified type. List grows automatically upon adding data or elements to it. Short list sorted list always stores data in key and value pairs. The data that will be stored inside the sorted list will always be in a key value pairs. The elements are added in the ascending order of key dictionary. Dictionary stores data in key value pairs again, but the elements that are added to it won't be in the ascending order of the key Q. What is a Q? Values are stored in first in and first out manner. What is first in first out manner? It simply means that the elements that are added first will be first to be retrieved. It has Q method to add values to the Q and DQ method to retrieve the values. When you use Q method, it not only retrieve the values, but it also removes the values from the what is non generic collections. Nongeneric collections is defined in system dot collections namespace. When we want to use non generic collections, we have to specify system dot collections as a namespace inside the script. It can handle any type of object, but the data is not handled in a type safe manner. Here, this is the difference between a generic collection and non generic collection. Generic collections basically handles data in a type safe manner. Non generic collections does not handle data in a type safe manner. Here are some non generic collection classes. First is your Arraylist. All stores objects of any data type, grows automatically upon adding the element. Then we have hash table. Hash table stores data again in key value pairs, values can be retrieved by hash values of the keys. Then we have stack stores the values in last in and first out manner, which is your Lifo manner. What is Lifo manner? Lifo manner simply means that the data to be added last will be the first data to be retrieved. Push method is used again to store a value here and pop and peak methods are used to retrieve the value stored inside the stack. That's it for this session. In the next session, we are going to have a look at some generic collection classes. We're going to have a look at a list, how to create a list inside Unity. C sharp. Thank you guys. I will see you in the next session. Thank you so much. 22. Understanding List & it's usage.: Hi friends, My name is Rohan Vasudevn. In this session, we are going to talk about list and how do we create a list and some of the important aspects of the list in Unity C sharp. So we have already created a list here and the name of the list is play names. The list is of data type string here, so all the values that we can add to the list will be of data type string here. Also, we have initialized the list using a new keyword inside the start function. For code one, we are adding values Dan and Sam to the list using add method for the list. The values Dan and Sam inside the list can be accessed using index. Here, the index of a list will always start from zero. For code two, we are printing value Dan which is at zero index and value Sam, which is at the first index in the list player names. For code three, again, we are removing the value at the zero index, which is your Dan. When you remove the value Dan from the zeroth index, the value will be replaced by the value at the first index, which is Sam. In this case, Sam will replace Dan here when we print value inside player names at the zero at index. In this case, for code number three, Sam will be printed in the Unity console using the bug dot log function here. For code four, we are inserting a value at the first index. We are inserting a value, Rachel at the first index using insert method here for the list. For code five, we are printing all the values from the list using a four loop. We have already declared a four loop. The value of I has been initialized with zero player names dot count. Here is the number of elements inside the list player names and I has been incremented here by one on every iteration. We are then printing the value Sam here, which is at the zeroth index on the first iteration. And on the second iteration, we are then printing the value Rachel inside the Unity console. Once the value of I becomes two here, the loop will be exited and terminated. Let's get into the Unity editor and let's see the output for the entire code inside the Unity console. Okay, so here it is. Here is the output printing values from the list using index. Okay? Dan initially was at 08 index and Sam was at first index. So we are printing Dan and Sam here printing values from the list after removing the value at 08 index. Since Dan has been removed from the list, now Sam is on zeroth index now printing all the values from the list using loop and index. Okay, so that's it guys. That's it for the list here. In the next session, again, we are going to continue with some generic classes collection. Thank you so much. I will see you in the next session. 23. Understanding Sorted List & it's usage.: Hi friends. My name is Roan Masudev. In the last session we spoke about list. In this session, we are going to talk about sorted list. Sorted list will have all the elements in key and value pairs. The elements added to the list will be in ascending order of the key. Now, in this script, we have already declared a sorted list for code one. We are adding key and value pairs to the sorted list. In our case, it is core list using add method three is the key here and 100 is the value for the key three. For code two, we are printing the values from the sorted list using keys. If we put one inside the brackets here, we will get the value for that particular key. When we use bug dot log function to print score list one inside the bracket. Then the value 200 will be printed inside the console. Again, score list three inside the brackets will print 100 inside the Unity console. Here for code three, we are creating a key here, two, and assigning the value 150 to the key two. For code four, we are using a contents key method to check whether a particular key exists or not. And if the key exists, then we are going to print a value of that key in the Unity console. For code five, we are printing all the key and values from the sorted list using for each loop. For each loop basically will iterate for all the items, key, and values inside the score list here, which is our sorted list. Here it is. Here is the output printing values from sorted list using keys. We printed the values for the particular keys. Lastly, we printed all the key and values from the sorted list using for each loop. So here is the output for that, key is one and value is 200, key is two, value is 150, key is three, and value is 300. That's it. That's it for the session. I will see you in the next session. Thank you so much. 24. Understanding Dictionary & it's usage.: Hi friends. My name is Rohan Masugev. In the last session we spoke about shorter list. In this session we are going to talk about dictionary. Dictionary stores key value pairs, key insider, dictionary cannot be null and must be unique. Now, value inside a dictionary can be null and can also be duplicated. In this script, we have already declared a dictionary here. The data type for the key is string here, and the data type for the value will be string here. Player details is the name of the dictionary here. And we have also initialized a dictionary using a new keyword inside the start function. For code one, we are adding key and values to the dictionary name. Here is the key and Danny, here is the value for the key name. Again, country here is the key, and USA here is the value for the key country. Code two, we are printing the values in the dictionary using their keys. For code three, we are removing the key country here, using the remove method for the dictionary. For code four, we are printing all the keys and values from the dictionary using for each loop. So let's get into the Unity editor and let's run the code. And let's see the output here. Okay guys, so here is the output for the code printing values from the dictionary using key. So we have our output as Danny and USA here. Once this is done, then we are removing the key country from the code. And lastly, we are having an output as Key name and Value. Danny, there is no country here because we have already removed the country from the dictionary. That's it guys, Thank you so much for the session. I will see you in the next session. 25. Understanding ArrayList & it's usage.: Hi friends. My name is Rohan Vasdev. In the last session we spoke about Q. In this session we're going to talk about an ery list. Ery list is an ordered collection of elements of any data type. Eralst grows automatically upon adding the elements to it. Eryalist can also have duplicate elements inside it. In this script, we have already declared an Eryallist and the name of the Aral list is my list. We have also initialized the Aral list using a new keyword, and we are adding two elements, Dan and John, inside the list. Upon initialization inside the start function in code one, we are printing all the values from the R list using a. For each loop we have already declared a for each loop here, which will iterate over all the elements inside the array list, my list inside. For each loop, we are printing all the elements using rebug dot log function. So basically this will print Dan and John in the Unity console. In code two, we are adding more values to the array list, Sam and Tina, using add method for the array list in code three. Again, after adding the elements, we are printing all the elements or values inside the array list again using for each loop. Now in code four, we are removing a value or the element from the Aral list at the zeroth index using remove at function. Basically, on the zero eth index, we have Dan here. So we are removing Dan from the ery list. Now, after we remove Dan from the ery list, we are inserting a new value on the zeroth index to the ery list using insert method. Now in code six, we are printing all the values from the ery list using for each loop after removing and inserting the value at the zeroth index guy. So here it is. Here is the output printing all the values from the realist using for each loop. Initially, we added Dan and John during the time of initialization to the relist. We are printing Dan and John here, printing all the values from the Alist using a for each loop. After adding more values to it, we added Sam and Tina to the list. We have here Dan, John, Sam, and Tina. Now lastly, printing all the values from the list using a for each loop. After removing and inserting a value at the zero at index, we removed Dan which was at the zero at index and we added Jenny and zero at index. Here is the output for that. We have Jenny, John, Sam, and Tina. So that's it guys. Thank you for the session. I will see you in the next session. Thank you so much. 26. Understanding Hashtable & it's usage.: Hi friends. My name is Rohan Dev. In the last session, we spoke about a list. In this session, we are going to talk about hash table. Hash table stores data or elements in key value pairs. The values inside the hash table can be retrieved using the associated keys. The elements added to the hash table can be of same data type or different data type. Keys inside the hash table cannot be null, but values inside the hash table can be null. Hash table class implements dictionary collection, innumerable interfaces. Now in this script, we have already declared a hash table and the name of the hash table is players data. We have initialized the hash table here using a new key word inside the start function. For code one, we are adding key value pairs to the hash table using add method. Here, code two, we are printing a value for a specific key. In this case we are printing the value for the key name here. Debug dot lock function here will print and which is the value for the key name here. For code three, we are using eye collection to retrieve all the keys from the hash table. The keys are retrieved by using dot keys. For code four, we are printing all the keys and values from the hash table here using a for each loop, we have already declared a for each loophole here, which will iterate basically through all the keys inside the hash table. All keys is a variable or an object in which all the keys are stored here using eye collection in code three, when we are using a debug lock function. Inside the for each loop. Here here will print all the keys. The value for every key will be printed by using players data, which is your hash table, and putting a key inside it, which is, in this case 45. Here we are removing a specific key. In this case, we are basically removing a key city from the hash table by using remove method for the hash table. For code six, we are printing all the keys and values from the hash table using a for each loop after removal of a specific key. So let's go to the Unity editor now, and let's print the output. Okay guys, here it is. Here is the output from the code printing a value for the key name from the hash table. So the value for the key name is and in our code. So we are printing, and here printing all the keys and values from the hash table. So basically we are printing all the keys, key city value, New York, key name value, and key age value 18. So we are printing all the keys and values here inside our hash table. Now lastly, we are printing all the keys and values from the hash table using a forage look after removal of a specific key. We removed it from the hash table and hence we are printing key name value and and key age value 18. So there is no city here since we have removed it from the hash table using remove function for a hash table. That's it guys. Thank you for the session. I will see you in the next session. Thank you so much. 27. Understanding Stack & it's usage.: Hi friends. My name is Rohan Vasudeven. The last session we spoke about has table. In this session we are going to talk about stack. Stack is a special type of collection which stores data or elements in Lifo manner. Lifo here means lasting and first out manner. The element to be added last will be the first element to be retrieved from the stack. Okay, so in this script, we have already declared a stack and the name of the stack is my place. We have initialized the stack using a new keyword inside the start function. For code one, we are adding values to the stack using a push method. So, the push method is basically used to add values to the stack. So, we are adding Danny here, then we are adding Sam here. And lastly, we are adding, and here Andy is the last element, or the last value to be added here in code two, we are printing all the values inside a stack using a for each loop, we have already declared a for each loop. For that and inside the for each loop, we are using debug dot log function to print all the values inside a stack. This for each loop basically will print and first, because stack works in a Lifo manner, last in and first out, and is the last element added. So it will print and first, then it will print Sam, and lastly it will print Danny. Here in code three, we are retrieving and printing the last value added to a stack using peak method. Peak method returns the last element inside the stack, but does not remove the element. It does not remove the value, so it will just retrieve the value here. Okay, Now in code four, we are using a pop method which will return the last value added to the stack, but it will also remove the last value added to the stack. Okay, So in code five, we are printing all the values in a stack after using the pop method. Now using a pop method. In code four, we have removed here value and from the stack. So, once we run this for each loop, we are going to print Danny and Sam here in the Unity console, since Andy has been retrieved and removed from the stack in the code four. Now let's get into the Unity editor, and let's see the output for this code. So here it is. Here is the output, printing all the values in a stack. So we are printing And Sam and Danny, as I stated earlier. Okay, stack works in a Lifo manner, so Andy was the last element to be added first, so it will be the first element to be retrieved. So, we have retrieved and here first then we are printing Sam, and lastly, we are printing Danny here. Okay, retrieve and print a last value added to a stack using peak method. So, again, here we are retrieving last element added to the stack, last value added to the stack, which is Andy, and we are printing it. Now, lastly, we are printing all the values in a stack after using the pop method. So we used a pop method and we removed the last element, retrieved and removed the last element, and we printed all the remaining values inside a stack. So that's it guys. That's it for the session. I will see you in the next session. Thank you so much. 28. Introductions to UI in Unity & create a Canvas: Friends, my name is Rohan. As today we are going to talk about Unity. Uy, Unity UI, in simple words, is used to design and create user interfaces for games and applications. In this session, specifically, we are going to talk about one of the components of Unity UI, which is your UI canvas. So what is canvas? Canvas is created as a game object with a canvas component attached to it. So whenever you create a canvas inside Unity, it is always created as a game object which will have a canvas component attached to it. Canvas is displayed as a rectangle in the scene view. Every canvas will have a transform component attached to it. All other UI elements should be inside of a canvas. Canvas will be always or should be apparent, of all other UI elements or UI components. All the elements inside the canvas are drawn in the order they appear in the hierarchy. Now there are three render modes for the canvas. First is your screen space overlay, which places the UI elements on the screen rendered on the top of the scene. This is basically like a overlay screen on the top of the screen space. Camera canvas is placed at a specific distance from the camera canvas scalar component. It simply controls the scale and pixel density of the UI elements. Kale is your size. Pixel density is the number of pixels in the given area, basically for the UI elements. Now there are some scale modes available in canvas, scalar component. First, is your constant pixel size. The size in pixels for the UI elements remain constant here irrespective of the screen size. Second is your scale. With screen size scales, the UI elements on the bigger screen sizes, the UI elements placed on the canvas will scale up according to the screen size. Here, if you choose the canvas scalar component. Lastly, we have constant physical size. The physical size of the UI elements remain constant irrespective of the screen size. I'm here in the Unity editor. We have already created a scene, and the name of the scene is UIC. Let's create a canvas component here. How do we do that? Right click here, the UI scene, and select Game Object, and then select UI here. Inside UI, we will have to choose canvas here. Okay, and that's it. Our canvas component here is added to the scene. We won't be able to see anything here because we have not added any elements. Basically, this will be a parent of all other UI elements like textboxes and buttons, et cetera. We have a W transform component attached automatically or added automatically to the canvas. Game object transform basically will place all the other UI elements inside the specified area or the canvas. Okay, so as we all can see here, again some values driven by the canvas. So this is a non editable rec transform. We cannot edit it right now because render more to screen space overlay or screen space camera, then we won't be able to edit the canvas rec transform. But if we change it to world space, then we will be able to change or modify the transform here. Okay, then we have canvas scaler here. First is your constant pixel size. Then we have scale screen size, and we have constant physical size. I will see you in the next session with more UI components. Thank you so much. 29. UI Text & components: Hi friends, My name is Rohan was in the last session we spoke about UI Canvas Unity. In this session, we're going to talk about UI Text Unity. So what is UI Text Unity? Very simple. It displays a piece of information or a text to the user, which is generally non interactive. This information can be a score, a health, number of coins, et cetera, which are generally displayed using UYext. In the game or in a C UI text component is attached to a game object. This means when you create a UI text component, a game object is created to which UI text component is attached to. Now there are sum of properties for a text element I text element, these are font is used by the text, the font that is used by the text, The font size, which specifies the size of the styling or the style that is used by the text, is the value the text component displays. Line spacing is species, font, line height. And alignment is positioning of the text middle, center, top, bottom. Okay, now let's get into the Unity editor and let's create a UI text element inside Unity. Okay guys, I am in the Unity editor. And to create UI text, it's similar to how we created Unity canvas. Right click on the UI here and go to Game Object. And select UI. And select your text element here. Here it is. Your text is created. So we can see text on the screen over here. So this is a text game object here which will have a rec transform here, which is editable. We can modify the position to it. Now, Text game object will have component text attached to it. Now you can see here, this is where we can put in the text. Okay, right now it's new text. Let's put a long text here. Let's try to change it so that we can see the entire content. Font style is normal. We can change it to bold, italic, bold, and italic. Let's change it to bold here. Then we can increase or decrease the font size. Let's change it to 18 here, okay, it's become bigger. Now in the paragraph, this is alignment where we can align the text. Basically keep it in the center. This rectangle that you can see here is the transform for the text box. Then we have horizontal overflow. Here we have a long text and we are not able to view the text, the entire text right now. It's wrap, we can change it to overflow, but still we are not able to see. What we can do is we can click here and increase the transform for the next. Let's keep this wrap here, and let's increase this. Let's increase this according to our text. Let's change the text color here. Let's keep it to red. Here it is. That's it guys. Thank you for the session. In the next session we'll be talking about UI image component in Unity. Thank you so much. 30. UI Image & components: Hi friends. My name is Rohan Vasudev. In this session, we are going to talk about UI image component in Unity. What is an UI image component? Ui image component displays an image to the user on the screen. Ui image component can be used as icons backgrounds for the text components, et cetera. So there are various scenarios for which UI image component can be used for UI image require source image or texture to be a sprite. So the source image or the image for the image component has to be a sprite. What is a sprite? Sprite is a simple two degraphical object having textures on them. Now, there are a few properties for an UI image component. What are these properties? Source image, source image is basically the image to be displayed in the form of a texture or a sprite. Then we have another property, which is color. Color specifies the color applied to the image. Then we have material. Material is the material used to render the image. Preserve aspect, preserve aspect, preserves the aspect or actual dimensions of the image set native size. It changes the dimensions of the image rec transform to the actual pixel size of the texture. Then we have one more property for the UI image component, which is image type. Image type will specify how the image is displayed on the screen. There are four image types which can be used. First is your simple. In this image type, images are stretched to fit transform of the image component or the image game of check. We have sliced specifies a sliced image for rectangular elements or decorated boxes. Then we have tiled image with the repetition of sprites. The sprites or the textures are in repetition manner. If we select the image type to tiled. Then lastly we have a filled type which is a partial image generally useful for your countdown, timers, et cetera. Okay, now let's get into the Unity editor and let's create an UI image component. Here it is, guys. I'm here in the Unity editor. Let's create our image component here in the C. Okay, how do we do that? Right click here on the UY scene, go to Game Object, select UI here, and click on Image. Here. We have created our image component in the scene. Right now it's blank because we have not attached any source image here. This source image has to be a sprite to attach a source image. Let's create a sprite inside Unity. How do we do that? Let's create a folder here, just right click here, inside the Acts, and go to Create here. And click on Folder. Okay, let's rename the folder to sprites and just open the folder. This is the image that we are going to use. So let's just drag and drop this image into the sprites folder here. Just drag and drop the image here. Okay? So right now, this image by default is an image format, so we need to change it to a sprite format. So how do we do that? Click here on Default and select Sprite to D and U, Y here. And click on Apply here. Okay, we have created our sprite. Let's attach this sprite to the image component. So click on Image Component again. Okay, And click here. And select this at, which is a sprite now. Okay, and that's it. We can see our UY image component added inside the scene. Then we have preserve aspect here. Preserve aspect will actually preserve the original dimensions of the image. Let's change the width to 150. Okay? Right now it's not looking good, it's looking a little stretched. If you choose preserve aspect here, it will return the actual dimensions of the image. So let's see what is native size here. This is a re, transform for the image. So once we click on this native size, it will return or change the transform, this rectangle here to the actual pixel size of the texture. Okay, so let's just click on Set Native size here. Okay, and that's it. It has modified direct transform to the actual pixel size of the texture. So that's it guys, That's it for the image component here. I will see you in the next session with the UI button component. Thank you so much guys. 31. UI Button & components: Hi friends. My name is Rohan Dev. In this session, we're going to talk about UI button immunity. What is UI button immunity? It is an interactable element immunity which responds to the user click. It is used to perform or initiate an action in the scene or a game. An image component is attached to the button whenever you create a button immunity by default, an image component is always attached to it. So you can apply any image to the button of your choice. So what are the properties of a button element? First, is your interactable, which specifies if the button is clickable or not. Then there is transition, which specifies the process of changing from one state to another. Okay, so basically when you tap on the button or click on the button, the state of the button changes. And these states can be your normal state, your highlighted state pressed, and disable state. There are four options in transition. What are these options? First is your nun. Then we have color ten here. Then we have sprite swap here. And lastly we have animation. Now let's see one by one what these options for transitions basically mean. None will have no effect on the state change. It will have no effect on the button, basically whenever the button is pressed or whenever the button is disabled or whenever the button is highlighted. Then we have color tint, which changes the color of the button with the change in the state. So we can have different colors for different states here, sprites, different sprites can be displayed for each individual state. So we can apply different sprites for each individual state here. Lastly, we have animation transition here. Animations can be played according to the state of the button, so we can apply animations to the button according to the state. A button must always have an animator component attached to it in order to allow the animation transition to work. Okay, so now let's get into the unity editor and let's create a UI button in the Unity. Okay guys, here I am in the Unity editor. And let's create a button here to create a button. Just right click here on the UI scene, okay? And just go to Game Object, and then select UI here. And then click on button here. Okay, so we have our button created here, as we all can see here in the screen. Now let's see what are the elements attached to the button game object here. Firstly, it will be a rec transform that will be attached by default here. Okay, Then we will have an image component which will be attached when we create a button. Now going to the button component, here we have an interactable property which is checked right now. Let's run the okay. Right now we are able to click on the button here, and it's a clickable button basically. Okay, let's just uncheck this. And the button is disabled here. We cannot click on the button here, okay? Then we have transition property, which will have four options, none, color, tint, sprite swap, and animation. Choosing none simply means that button will have no effect on the state change here, okay? But by default it is set to color tint here, so let's try and see what is color tint here. Okay, Target graphic. Target graphic simply means the image that is set to the button here. In this case, this image has been set to the button here. Then we have normal color. Normal color is the color basically which is applied to the button when the state of the button is normal, when it is not pressed or highlighted, basically currently it is kept to white color. Let's change the normal color of the button. Let's keep it to yellow color. Okay? Highlighted color is basically when you hower on the button here, let's change that color to red color. Okay? And pressed the state when you actually click on the button. Currently it is gray. So let's change it to this color. Okay. And selected color is basically when the button is in the selected state, let's keep it to white. Okay? And disabled color is when the button is not interactable, basically, when you uncheck this thing. Then lastly we have an onclick function here. Okay? On click function is a Unity function, which is triggered when the button is pressed here. We will get into the details of this in the upcoming sessions when we are going to learn about events, triggers, and functions in Unity. So right now, the button is in the normal state. In the normal state, the button will have a yellow color. Okay? Highlighted color here is red. So if I hover on the button here, the color of the button will turn to red. Okay, then pressed, color is pink. So when I click on the button, okay, you can see here, it turns to pink. And once I leave the button, or leave the click, then it will turn to white because that's a selected state of the button. Okay, it turns to white here. Lastly, if you extend a button component here, okay, or the button game object here, inside the button game object, we will have a text game object. Okay, where we can actually apply the text on the button. Right now the text Is button, so we can change it to Submit or the text of our choice. Okay. The text on the button will change to Submit. Here. That's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 32. UI ScrollView & components: Hi friends, My name is Rohan Vase. In this session, we're going to talk about UY scroll view in Unity. What is UY scroll view? Uy scroll view is used to display content inside a scroll able frame. It is generally used when a large content needs to be fitted inside a small area in a scene. A scroll view has a scroll wreck and an image component which is attached to it. When you create a scroll view game object, by default a scroll wreck and an image component will be attached to it. A scroll wreck provides functionality, scroll over the content, which takes up a lot of space and needs to be fitted inside a small area in a scene. Now there are some important elements in a scroll view. First is your Viewport. Viewport is the child of the root game object which is scroll view. It is a rec transform that actually acts as a window to the scroll level content. Now mask component is attached to the viewport in order to hide any content outside of the viewport. Then second we have content. Content is the child of the Viewport game object, The content component, we'll have all the scrolling content inside it. So basically whatever content we are going to put in a scroll view will be inside your content, game object, or content component. The size of the content component needs to be expanded to fit all the scrollable content Only if the content is larger than the viewport, then the scrolling effect will work. So suppose if content is smaller than the viewport, then the scrolling effect won't work at all, so it has to be larger than your viewport. Then we have scroll balls. There are two types of scrollbars here, horizontal and vertical scrollbars, which are the child of the root game object, which is your scroll view game object. Again, they're used to define horizontal and vertical scrolling for the scroll bar elements. So horizontal scroll bar is used to define horizontal scrolling, and vertical scroll bar is used to define vertical scrolling. How to make a dynamic scroll view. Now the scrollable content is added inside the content component. Okay, so whatever objects we are going to add, they all will be inside the content component. The size of the content component or the game object is larger than the body of the scroll view by default and can be modified as required. Now this perfectly suits for the static scroll level content, if we exactly know how much content is going to be there inside the scroll view basically. But what if we don't know how much content is going to be there? What if the content is added at the run time? Then what? Then the content component will not adjust its size accordingly and the content outside of the content area will not be visible. Hence, the size of the scroll view can be changed dynamically by adding two elements to the content component. And which are these elements? These are your vertical layout group. What is vertical layout group? Vertical layout group is used to lay out child elements below each other. Okay? Below one another. The scroll able content here will be placed vertically, one below another. Then we have Horizontal layout group. Horizontal layout group is used to lay out child elements side by side. The scrollable content here basically will be placed horizontally, side by side. Okay? And then lastly we have content size fitter. What is content size fitter? The most important aspect here, content size fitter will drive the size of the rec transformers attached to. Okay, so this Content size fitter basically will be added to your content component or game object. In fact, even the vertical layout group or horizontal layout group will be added or should be added to your content, game object or content component. Content size fitter will drive the size of the rec transform it's attached to, based on the layout of its children. It only works in the combination with a layout component such as your vertical layout group or horizontal layout group. Content size fitter can be said to have a horizontal fit preferred size for horizontal layout group. So we can set the horizontal fit to preferred size for content size fitters. So this is a property for content size fitter which can be set to preferred size. This will basically increase the Id on adding more child objects and which will fit them all. So that's it guys. I will see you in the next session. In the next session, we'll be creating an example for a scroll view with a vertical layout group and a content size fitter. Thank you so much guys. Thank you so much. 33. Create vertical ScrollView using Vertical Layout group: My friends, my name is Rohan Sev. In the last session we spoke about UY scroll view in Unity. In this session, we are going to create a scroll view inside Unity with vertical layout group and content Size Bitter. Let's create a scroll view here. How do we do that? Just right click here on the UY scene, which is your name of the scene, and go to Game Object, go to UY and select Scroll View Here. Yes, our scroll view has been created here. Okay, We can just go to the scene mode here and adjust the width and height of the scroll view. Just click on Wreck Tool here and just adjust the inside the canvas scroll view game object created here. Scroll view will have image component attached to it by default and a scroll wreck attached to it by default. Horizontal and vertical here is in what direction it will scroll. Right now, both of them are checked. Then we have a moment type which is kept to elastic. Elastic will basically move the intent in all the directions. We don't want to do that. Let's change it to clamped. Okay, then inside the scroll view, we'll have a viewport here. Let's go to viewport here. Viewport basically, again, we'll have an image component attached to it with a rec transform and a mask attached to it. Now inside the Viewport, we'll have a content which will basically have all the scrollable content. Okay? Whatever the scrollable content we need to put here needs to go inside this content component or content game object here. Let's add vertical layout group to the content here. Okay? And let's add content size fitter here. Okay, for the vertical layout group, we have padding. Okay? Padding is basically the space that will be left from left to right, top and bottom. Okay, let's keep it to 55. We can adjust it later also. Okay, then spacing is basically the space between two different elements, child elements inside the content game object. Let's keep it to five here. Again, scroll able area basically is not horizontal here. We don't need to change this, okay. We will have to change vertical. Fit here to preferred size so that even if you keep on adding more child elements to it, content area basically will resize itself. All the elements will fit into it. Let's start adding images inside this content here. But we need to do some changes in the image here. We want it to be a little stretched. Okay, let's go to scene here. Select again, rec tool here and adjust it according to the. Just drag it. Let's right click on the image game object here. Go to UI here again, and click on text here. We have added one image here to the scroll view. Let's add more images so that we can see the scrolling effect. Okay, so let's just press control D and keep on adding the images. Copying the images basically for the scroll bar, horizontal and vertical. In this case, Horizontal is going to be disabled because we have used Vertical Layout Group here. Click on scroll bar vertical here. And let's just change the width for this, just make it five. Okay, for horizontal we need to change the height. Let's keep it to zero. Now let's run the scene, and let's see how it looks. Here it is. We have a scrollable view here. As we discussed earlier, image component will be attached to the scroll view game object, okay? And a source image is set to background here by default, so we can change the color for it. Let's change it to darker color, or maybe red color or something like that. Okay? Depending again, it depends on what color you want, what color combinations you're using. Okay, here is the scroll view using vertical layout group and a content size fitter. Thank you so much guys. In the next session we'll be talking about or we'll be creating a scroll view using a horizontal layout group and a content size fitter. Thank you so much, guys. I will see you in the next session. Thank you so much. 34. Create horizontal ScrollView using Horizontal Layout group: Hi friends. My name is Rohan Asad. In the last session, we saw an example for Unity scroll view using vertical layout group and content size fitter. In this session, we are going to see an example for Unity scroll view using Horizontal Layout Group and Content Size fitter. So basically the scroll view will scroll, the content inside the scroll view will scroll in a horizontal direction to create a scroll view. Right click here on the UI scene. Go to game object here, select UI here, and click on Scroll view. Also, let's adjust the height and width for the scroll view. There are two ways to do it. Either you can click here on the Re tool, go to scene mode, and just drag this thing. Or else you can directly set the width and height for the scroll wheel. Let's just change the width to 400 here, since it's a horizontal scroll view. And let's keep the height to 150 here. Let's just extend the scroll view game object here. Okay, extend the Viewport game object here and click on content here. Let's go to scene mode here. Let's adjust the height of the content to match the height of the scroll view here using a transform tool. Again, for the scroll bars here. Scroll bar horizontal. Okay, let's adjust the height to five. Okay, for the scroll bar vertical, let's keep the width to zero, because anyways, the content is not going to scroll here vertically. Let's keep the width to zero. For the scroll bar vertical here. Again, go to Scroll View here. Click on the scroll view game object here. And keep the moment type to clamp here and not elastic. Now let's add some images in the content, okay? But before adding those images, let's add two components here. Okay? One is your horizontal layout group, Another is your content size fitter. Click on Add Component here, and select Horizontal Layout Group. Okay? Padding left right top will adjust it later according to the sis and the look of the image here. Okay, For the child alignment, we want scroll able content exactly in the center of this scroll able view, basically from upper left. Change it to middle center here, okay? And then add another component which is your content size fitter. Okay, Horizontal fit, we will change it to preferred size here. All right, after doing this, let's add image here. To add an image in the content right click on the content game object. Go to UY and select Image here. Our image is added here in the center. Okay, now let's do one thing. Let's set a sprite for this image. I have already added a few sprites here in the sprites folder here. Let's just drag and drop this user one sprite in the source image for the image basically that we just added. Okay. Click on preserve aspect here, just select the image and press control D to copy the image. Okay, let's just keep on adding the images, okay? Now click on image one, and let's just change the source image. For that, just change it, drag and drop the source image here, right? Basically, just click on the content here, okay? And go on the horizontal layout group here. And let's adjust the padding for this. Let's just keep it to five, okay, For the right again, let's just keep it to five. For the top, let's change it to ten. Bring it more in the center. Okay, bottom. Let's keep it to zero. We don't want to change it for spacing. I think spacing looks fine here. Okay. Okay, that will be all. Let's run the scene and let's see how this thing looks here. We have just created a scroll view using a horizontal layout group and a content size fitter, Though this scroll view basically will scroll only in horizontal direction. Okay, thank you guys. Thank you for the session. I will see you in the next session. Thank you so much, guys. 35. UI InpuField & components: Hi friends, My name is Rohan Vase. In this session, we're going to talk about UI input filled in Unity. Basically, it turns a simple label into an interactive input field element where you can take inputs from the user. So it is generally used to take user input in Unity. Generally, it is used for logins, registrations, or get any kind of flare data. A text component or a text game of created when you create an input field component as a child object. Now, there are some properties for input field element. What are these properties? Interactable. Interactable property specifies the input field can take any user inputs or not. Then we have transition property. Transition property is used to determine how an input field would react in normal pressed, highlighted, selected or disabled state. Okay again, we have text component property. Text component property basically refers to the text component here. It is a reference to the text component which is the text game object which is created as a child object for the input field component. Then we have text is the initial texting the input field before taking the user input, basically. Okay. Then we have character limit. Character limit specifies the maximum number of characters and input field can take. Then we have some more properties for UI input filled in Unity. Content type property specifies the type of characters and input field can take example. It could be a standard character, it could be an e mail address, it could be a password, it could be an integer number, or it could be a decimal number. Then we have line type. Line type specifies format of the text in the input field. This format can be further classified into three types. Single line, the text is allowed to be in a single line here, okay? Then we have multi line submit. The text can use multiple lines only when it is required. It simply means that the new line is automatically added by the input field here. Okay, so multi line, new line is again the text which can use multiple lines. A new line can be added by the user by pressing the return key here. Then we have a placeholder property. Placeholder is a character or a string that takes the place of the final text or data as a hint or a caption. So basically it is a hint for your final text data. Then we have carrot blink rate. Caret blink rate defines the blink rate for the mark placed in the input field indicating the text insertion place. Then we have selection color selection. Color is the background color for the selected text in the input field. Whatever text you select in the input field, selection color will specify the background color for that particular text. Then lastly, we have some functions for the input field in Unity. First, is your On value change function. On value changed function is an Unity event called when the text in the input field changes. Basically, when you type something inside the input field on value changed function is called or invoked in Unity. Lastly, we have on end edit function. On end edit function is an Unity event called when the user submits the text inside the input field by submitting, okay? It is even called when the focus is removed from the input field. Okay, so that's it guys, thank you for the session. In the next session we'll be seeing an example for input field in Unity. Thank you so much guys. 36. Create UI InputField & understand the components: Hi friends, My name is Rohan Sev. In this session, we are going to create an example for UY input field immunity. To create an UY input field, let's right click here on the UY scene, Go to game object, go to UY and click on Input Field Ear Input Field has been created in Unity. Now let's extend the Input field game object inside input field game object. We'll have two game objects, Placeholder and text, that will be created by default, her game object. Here is the hint text basically, which will be inside the input field. Right now. It is set to enter text. Let's change it to name. Here, yes, our placeholder text has changed now. Initially it was entered text, we have changed it to enter name. Here we can see the change here inside input field. Okay, This text game object is basically the which will be the user input the text that will be taken from the user here. Okay, let's go to input field game object here. Again, when you create an input Field game object, it will have a Rec transform component by default attached to it. Right now, the width and height for the Rec transform is set to 160.30 Let's change it to 170.70 here, okay. So we can change the size for the input field by adjusting the rec transform for the input field again, it will have an image component attached to it, so we can change the color. We can change the source image as well. Okay? So coming to the input field component for the input field game object here, okay? It will have an interactable property right now it is checked. It simply means that it will be able to take the user input. So if you uncheck this, it won't be able to take any input from the user. Then we have transition property. Transition property basically specifies how the input field will react to the change in the state or the state change coming to the text component property here. Text component property here is the reference to the text game object here. Okay, again we have a text property here. Text property here is the initial text that we can add before taking the user input. Then we have character limit property. Limit basically specifies the number of characters this particular input field can take, okay? So right now there is no restrictions on the character, will set the character limit to zero, okay? Then we have another property which is a content type. Content type basically specifies the type of content this input field will take, okay? There are various options here. We have a standard, then we have auto corrected integer numbers, and we can use decimal number. Then we have name, e, mail, ID, password, and film. We can also set a custom content type here. Then we have another property which is line type. Line type specifies the format of the text inside the input field. Okay, There are three options for that. Single line. Single line allows the text only in a single line. Okay, We cannot have multiple lines. If we use single line property, then we have multi line submit here. Okay, let's change it to multi line submit. And let's run the scene. And let's see how this thing works here. Okay, let's try adding a long text here inside the input field. This is a long text to okay, multi line submit property. Okay? So as you can see here, new line is automatically created upon adding the text here. Okay? Then we have a placeholder property. Placeholder property is a reference to your placeholder game object here again. Then we have a carrot. Carrot is the mark, which is actually the place for the insertion of the text here. So you can see a mark blinking here, that is the carrot inside input field. Okay? So you can increase or decrease the blink cat for the carrot here. Then we have a carrot width. So let's try changing the carrot width, okay, So the width of the carrot increases here. If I change it to four, okay, Then we have custom carrot color property here, custom carrot color. We can actually change the color for the carrot. Right now it is black. Okay, we can check this custom carrot property here, color property here. And change the carrot color the way we want it to. So let's change it to red. So you can see here right now it's turned to red color. Okay, Then we have another property which is a selection color property. Right now it is set to blue. Selection color property is basically the background color for the selected text. So let's select a text here. So this is the background color for the selected text, which is blue color. Let's change the color to something else. Okay, let's make it a little dark, probably. Yeah. Okay, So we can change the background color for the selected text here. Then we have two functions here. First is your on value change. On value change is the Unity event which is invoked when the user is typing something into the input field here. And lastly, we have on edit function, which is an Unity event again, which is invoked when user submits the text from the input field or even if you remove the focus from the input field. We will get into the details of these functions when we proceed further with the sessions where we learn about events and functions. Okay, so that's it for the session guys. I will see you in the next session. Thank you so much guys. 37. UI Slider & components: Hi friends. My name is Rohan Vasudev. In this session, we're going to talk about UI slider Unity. What is UI slider immunity? It is a standard slider which is used to set a certain value between minimum and maximum value pair. It is commonly used for audio controls and screen brightness in a scene or in a game. Now, when you create a UI slider component, Unity three game objects, background fill area, handle, slide area, are also created automatically as the child. For the root slider game object, what is background game object? Here, background game object has a Rec transform, an image component attached to it. This image will be the background image for the slider fill area. Fill area again has a Rec transform component attached to it and spans or extends from minimum value to current value of the slider. A child game object for the fill area game object is also created automatically. This game object will have a transform component and an image component attached to it. This image component specifies the image and color for the fill game object. What is handle? Slide area? Handle slide area has a transform component attached to it and follows the current value of a slider, a child game object handle for the handle, slide area is also created automatically. This handle will have a re transform component and an image component attached to it. This image component specifies the image and color for the handle game object. By default, Unity Knobprt is attached to the handle game object as the image properties of a slider element. Interactable property specifies if the slider is interactable or not. Transition property is used to determine how a slider would react in normal pressed, highlighted, selected and disabled state. Fill is a transform to us as a fill for the slider and is a reference to the fill game object which is created when you create a slider component in Unity. Handle is again a transform to use as a handle for the slider is a reference to the game object which is created automatically when you create a slider component in Unity. Direction is the direction of the slider from minimum to maximum value. We have four options for the direction left to right, right to left, top to bottom and bottom to top. Minimum value is the value set for the slider or allowed for the slider. Maximum value is the maximum value set for the slider or allowed for the slider, value is the current value of the slider. And lastly, whole numbers is basically a bullion value. If it is checked or if it is set to true, then only whole numbers will be allowed between minimum and maximum values for the slider. That's it guys. I will see you in the next session. In the next session, we'll be seeing an example for UI slider in Unity. Thank you so much guys. 38. Create UI Slider & understand the components: Hi friends. My name is Rohan Dev. In this session, we are going to see an example for UI slider in Unity. To create a UI slider in Unity, right click here on the UY scene, go to game object, go to UI and select slider here. Our slider is created in Unity. Select the slider here, and go to Inspector Taber. And we can see Rec transform component attached automatically to the slider game object. By changing the width and height of the Rec transform, we can basically change the weight and height for the slider. Coming down here, we have slider component attached to the slider game object by default. Okay? So we can see some properties here for the slider component. Interactable property basically will specify if the slider is interactable or not. Right now it is checked, that means the slider is interactable, okay? Then we have transition property. Transition property is used to determine how this slider would react in a state change or react on a particular state change. Coming to the fill wreck property here fill wrecked property basically is used as a fill for the slider. It is also a reference to the Rec transform fill transform which is created automatically inside field area game object. Okay, Handled Reck property here is used as a handle for the slider and again is a reference to the handle game object which is created automatically inside handle slide area game object in the slider direction property will specify the direction of a slider from minimum to maximum value. Okay. We have four options for the direction property left to right, right to left, bottom to top, top to bottom. Okay. Let's run the scene here and let's see how direction property works for a slider. Currently, the direction of the slider is set to left to right. This slider will move basically from left to right. Okay, Let's change it to right to left. This slider basically will move from right to left, and then we have bottom to top. Okay? This slider will move from bottom to top. And then lastly, we have top to bottom. This slider will move from top to bottom. Okay, Let's change it to default, which is left to right here. Okay? Then we have min value. Min value is basically the minimum value which is set for the slider, currently it is set to zero. And max value is the maximum value which is set for the slider. Currently it is set to one. Let's change it to 100, okay? This value here is the current value of the slider. Okay? Let's move the slider, or move the **** here, okay? We can see decimal numbers here when we move the slider, basically. And we can see the value changing value is basically the current value of the slider. Right now it is 24.83 and it is back to zero again. So let's check the whole numbers here. Whole numbers will allow the minimum and maximum value only to be whole numbers, okay? So let's check the whole numbers property here. And let's try moving the slider again. The changing value we can see here is all whole numbers. We cannot see decimal numbers here anymore, okay? And this is happening because we have just checked the whole numbers property here. Okay? So that's it guys. That's it for the slider component in Unity. I will see you in the next session. Thank you so much guys. 39. Anchor UI elements in Unity: Friends, my name is Rohan Vdv. In this session we're going to create an example for resizing, scaling and anchoring of UI elements in Unity. So to do that, let's create a UI button in Unity, Okay, right click here on the main camera, go to UY and click on button here. Okay, so our button is created here in Unity scene. What if we want to display this button exactly in the left bottom corner here of the scene, irrespective of screen size or resolution. Unity provides us with few aspect ratios here. Right now it is set to free aspect. We have aspect ratio of five is to four, that we have four is to three, that we have three to two, that we have 16 by ten, we have 16 by nine and we have stand alone 1,024.2 768. We can also add more aspect ratios. Okay, Let's set it to free aspect as of now, which is default aspect ratio, basically. What if we want to show this button here in the extreme left, bottom of the C. Try setting this button here just by dragging the button here and setting the position for the button. Okay, for this particular screen size, the button is here at the bottom left of the scene. Let's try changing the aspect ratio to five by four. No, it's not correct, it's going out of the scene. Okay, let's try changing the aspect ratio to four by three. Let's try changing the aspect ratio to 16 by nine. It's not proper because we want this button to be anchored at the exact position irrespective of any screen size or any screen resolution, or any as ratio. Okay, now let's try doing that. To do that firstly, let's click on the canvas here. Okay, for the canvas, we have a canvas scalar component attached to canvas game object For Y scale, more changed the scale mode from constant pixel size to scale with screen size. Okay, now let's click on button here. Now we want to anchor this button at the bottom left of the screen. So to do that for the rec transform, Unity provides us with some anchor presets here. Okay, this is vertical anchoring, and this is horizontal anchoring basically. Okay, So we want this button to be anchored to left vertically, so click on left here, okay? And we want this button to be anchored at the bottom horizontally, so let's click on bottom here. Okay, so this way the button will be anchored in bottom left position. Now let's go to the scene mode here. And let's just again drag the button here and set the position for the button the way we want it to. Okay, now let's go to game mode again. And let's see the position now for 16 by nine screen. Yes, it is at the bottom left corner. Let's try changing it to free aspect. Yes, it's at the same position. Let's try changing it to five by four. Yes, let's try changing it to four by three. Let's try changing it to three by two, then let's try changing it to 16 by ten. And let's try changing it to stand alone, 1024 into 768. Let's create another text element. And let's anchor it at the top left position here in the screen. Okay, so to create a UI text, click right click on the canvas here, go to UY and go to text here. Okay, our text is created here, exactly in the center of the screen. Okay, select your text game object, go to Rec Transform, Anchor presets here, okay? Vertically. We want it to be anchored left, okay, Horizontally, we want it to be anchored top. Let's select top here. Now again, let's go to the scene mode here. And let's track the text element here or text game object here, exactly at the top corner here. Now let's go to the game mode again. Now let's try changing the aspect ratio. Let's try changing it to free aspect. Let's try changing it to five by four. Let's try changing it to four by three. Let's try changing it to three by two. Let's try changing it to 16 by ten. Let's try changing it to 16 by nine. Let's keep it to free aspect. Okay, so this is how you basically anchor scale or resize an UI element or any UI component in Unity. Okay, that's it for the session guys. Thank you so much. I will see you in the next session. Thank you so much guys. 40. Introduction to Unity Events: Hi friends. My name is Rowan Suv. In this session, we're going to talk about event functions in Unity. What are event functions in Unity? The code inside the Unity script does not work like a traditional code in any other program or any other code. Instead, Unity passes control to the script by calling certain functions within it. These functions are called event functions as they are executed in the response to certain events during the game play. Unity identifies these functions on the basis of their names given by the Unity itself, and executes them according to the event during the game play. Some of the important event functions in Unity are as follows. We have awake function, we have start function, we have update, we have late update, and we have fixed update awake function. The first scene of the game is loaded upon running the game application. So when you run any game application, the scene is loaded and all the objects basically inside the scene or within the scene, are initialized upon the scene loading. Once the objects are created and initialized, awake function inside the Unity script is invoked and executed. Okay, Awake function in the script is basically an initialization function, which is the first function to be executed within a script. This function is called only once and is executed even if the script is not enabled or active. Let's see what is start function. Start function in the script is called only after a wake function is called. And it is called once in the life cycle of a script. Unlike a wake function, it is executed only if the script is enabled in Unity. Update function is defined in the Monobehavior class and will run automatically in each frame of the game if the monobehavior is active. What is frame? Frame is basically one still image that is rendered on the screen. Okay? The update function runs periodically while our game is running. The update function is invoked or called once per frame. The calling of an update function depends on the frame rate for the game. What is frame rate? Frame rate is basically the frequency at which the consecutive steel images are rendered on the screen. The time interval will be basically low for high frame rates and will be high for the low frame rate. Late update function is called once per frame after the update has finished. Calling. The late update function behaves exactly in a similar manner to that of an update function, except that it is called only after the update function is called. This function is basically commonly used to make the camera follow the player or any other game object. Then lastly, we have fixed update function. Fixed update function does not depend on the frame rate. Fixed update will have constant time intervals. Fixed update function can be called multiple times per frame if the frame rate is low or it may not be called per frame. If the frame rate is high, it is quite possible that fixed update will be called more than the update function. Okay, That's it guys, That's it for the session. In the next session, we'll see an example for start update, late update, and fixed update functions. We'll also see the difference between them. I will see you guys in the next session. Thank you so much guys. 41. Understand Unity Event functions in a script: Hi friends, my name is Rohan Sev. In this session, we are going to see an example for a wake start, update, late update, and fixed update functions within the script in Unity. For that purpose, we have already created an empty game object here. And the name of the empty game object is event functions. We have also created a script, event functions. Let's open the script here. Okay, let's add a wake function, late update function, and fixed update function to the script. Okay, guys, we have added awake function, update function, and fixed update function to the script here, okay? Awake function is the initialization function basically. And it will be the first function to be called within the script. When you run an application, any gaming application, the objects are first initialized and created. Once the objects are created and initialized, awake function will be invoked and called inside Unity script. Let's print something inside the awake function. This is an awake function, okay? So coming to the start function, start function will basically be called only after the awake function is executed, okay? Start function will be called only once in the life cycle of the script. Let's print something inside the start function as well. Start function. Okay, coming to the update function here, update function will be called only after the start function is invoked. Update function will be called once per frame. The calling of the update function totally depends on the frame rate of the game. Let's print something inside the update function as well. Okay, update function is executed. Let's add a function in Unity which is time dot delta time. Basically, time dot delta time will actually tell us the time taken for the completion of the last frame here, okay, Coming to the late update function, update function again is called one frame. It is exactly like update function, but the only difference is that update function will be called only after update function is executed. Update function can be used if you want your camera to follow the player or something like that, or maybe you want your camera to follow any other game object. Let's print something inside late update function. Late update function is executed again, Let's add time delta time. This will tell us the time taken for the completion of the frame. Basically coming to the last fixed update function here, fixed update function basically does not depend on the frame rate of the game, okay? The time interval between fixed update functions being called is always constant in Unity. Let's print something again inside the fixed update function. Okay? Update is executed at, let's add time delta time again. Okay, let's go and run the senior. Okay, guys, here is the output for the code. This is an awake function. Awake function will be the first function to be executed. Then we have start function that will follow the awake function. Then later, fixed update, update, and late update functions will be executed. Fixed update function does not depends on the frame rate and the time interval in the fixed update function will always be constant, okay? So all the fixed update function basically will have 0.02 here, okay? As the output update function and late update functions, they both have 0.02 as the time interval, okay? But if we go down, this time is changing here for both update function and late update function, since both these functions depends on the frame rate of the game, basically. Okay, so that's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 42. Introduction to custom functions in Unity: My friends, my name is Rohan Vasudev. In this session we are going to learn about custom or user defined functions in Unity C Sharp. So what are custom functions in Unity? A function basically is a block of code used to execute a single action or a task. It provides extensibility to the gaming application along with re, usability of the code, and saves time for rewriting the code. A function in Unity has following components. Function name, return type, body access specifier, and parameters. Syntax for a basic function in Unity C sharp is as follows. First, we specify access specifier, which is followed by the return type, then the name of the function, followed by brackets and calibraces. Inside the calibraces, we provide the block of code or the function body. Let's see one by one. What is function name? What is return type? What is body? What is access specifier? And what is parameters in a function? Function name. Function name is a name given to the function, okay? Then we have return type. Return type specifies what data type of function would return as a value. Then we have body, has a block of code to be executed inside the function. This body or the block of code will be inside the function, basically. Then we have access specifier. Access specifier specifies accessibility of a function within the application. Pesameters is the arguments passed in a function. This is an optional component. Now a function can be a basic function or a function with return type, or a function with parameters. Basic function is basically a simple function with a block of code to be executed inside. A function with return type specifies the data type of the value returned from a function. In simple words, it specifies the type of output. If the output type is number, then the return type can be int, float, double, et cetera. Function with parameters. Parameters is basically the information passed to the function. These parameters act as a variable with data type. These are variables basically with a data type. This data type could be int or a string, et cetera. They are passed after declaring name of the function. Inside the bracket, you specify the name for the function and the name of the function is followed by the brackets, basically. Okay? Inside these brackets, you declare these parameters. Now, there is no restriction to the number of parameters which you can pass to a function. But every parameter has to be separated using. You can pass multiple parameters, but every parameter has to be separated by a comma. Okay, that's it guy. In the next session we'll be seeing an example for basic function with return type and function with parameters. Thank you so much guys. I will see you in the next session. Thank you so much. 43. Write a basic function in a script: Hi friends, My name is Rohan Vase. In this session, we are going to see an example to write a simple function in Unity. To write a simple function, we have already created an empty game object. And the name of the empty game object is simple function. Here we have also created Act, and the name of the script is simple function. We have also attached the script to the empty game object, simple function. Let's open the script here and let's write a piece of code. To declare a function, we need to specify an access modifier for the function. Let's use private here. Private simply means that this function will not be accessible outside of the class or outside of this particular script. The access modifier in a function is followed by a return type. In this case, it is void because this particular function would not return anything. Okay? Then we need to specify the name of the function. Let's put my function. This name could be of your choice, it could be anything. We have just put the name as my function here. Okay? And then we have calibraces. And inside the calibraces, we'll write the piece of code to be executed inside the function. In this case, let's print something in the unique console with the help of bug lock function. This is simple function u, okay? How do we run the function just past the name of the function, which is my function in our case. Inside the start function. Here my function. Okay, Let's save the script, okay? So here it is, guys. Here is the output. This is a simple function in Unity. So thank you so much guys. I will see you in the next, in the next session we'll talk about, we'll see an example basically for function with a return type. Thank you so much guys. 44. Write a function with return type : Hi friends. My name is Rohan Vasudev. In this session, we're going to see an example for function with return type. We have already created an empty game object return function, and a script return function. We have already attached the script to the empty game object. Here, let's open the script and let's write a piece of code inside the script. Okay, so let's add a function here. A function with return type will specify the type of data, or the value function will return. Let's add an access modifier to the function. And let's add the return type here. Let's make this function to return a number. Let's add a return type as eight here. And let's name the function function type. That's the name of the function. This name could be anything as for your choice. Okay? Now, since is a return type, we have to specify the data that will be returned here from the function using a return keyword. Okay, now to do that, let's declare a variable inside the function into variable. Let's declare variable number one, which is of data type interior. And let's assign the value ten variable, okay? Let's just simply return this number one variable since it is a number, okay? Now, let's just pass the function with return inside the start function. So let's pass this function inside the debug dot lock function, because this particular function is going to return a number, okay? Function with return type, okay? Okay, that's it, guys. Here is the output. So we got ten here in the Unity console. Thank you so much guys. I will see you in the next session. In the next session, we'll see an example for function parameters, how to pass parameters, enough function. Thank you so much guys. 45. Write a function with Parameters: Hi friends. My name is Rohan Sue. In this session, we are going to see an example for function parameters for this purpose. We have already created an empty game object. And the name of the empty game object is parameter function. And we have also created a script parameter function. And we have already attached the script to the game object parameter function Here, let's open the script and let's write a code inside the script. Okay, let's declare function with parameter inside this script. Now to declare a function, let's start with an access modifier. Let's specify the return type to void, because this function is not going to return anything. Let's name the function as my function. Okay, Now we will have to pass the parameters inside the brackets here. Parameter is basically an information passed to the function. This information acts as a variable which has a data type. Let's pass a parameter here with a string data type. String first name, this is a parameter, insider function. Let's pass another parameter, last name of string data type using a comma here we can pass multiple parameters, insider function, okay? Now to print the first name and last name here. Basically to print the parameters here, let's use debug log function. And let's print something inside bug dot log. Okay? Let's give a space here, okay. Welcome. First name, okay? Plus double last name. Okay? We have used double codes here to provide a space between first name and last name, basically. Okay? Now, let's add the function function inside the start function. So when we run the scene, my function will be executed. My function, we have to pass the parameters here. Okay? And the parameters has to be of string data type. So, let's pass first name here, Danny. And using a comma, let's pass last name. Okay. Santiago. Okay, that's it. Okay, welcome, Danny Santiago. We have the output here. That's it guys. That's it for the session. I will see you in the next session. Thank you so much guys. 46. Introduction to Unity Delegates: Hi friends, My name is Rohan Vasudev. In this session, we are going to see delegates in unity. Sha. What are delegates? Delegates are reference pointers to the functions or methods in unity. The function assigned to the delegate is treated or passed as a variable so that it can be called or executed. A delegate works as a simple subscription based service where the function gets called or executed upon subscribing to that particular delegate. The functions are basically subscribed to the delegate. When you call the delegate, the function will get executed or called. Calling the delegate will notify all the functions that are subscribed to it. Syntax for a delegate in unity, har public delegate void. My delegate public static, My delegate, My delegate. A delegate in Unity CR is defined by using the delegate keyword followed by a return type. A member variable is declared using the member type followed by the variable name. So let's see some of the types of delegates in UnityChar, okay? Single cars delegate. Single cars delegate points to a single function or method. A single function is subscribed or assigned to the delegate using equal to sign. So this is a syntax for single cars delegate where we specify the delegate with a equal to sign, we specify the name of the function. Then we have multicast delegates. Multicast delegate points to a single or multiple functions or methods invoking a multicast delegate invokes all the functions subscribe to it in a sequential manner, one by one. Functions are subscribed to the delegate using plus equal to sine and unsubscribe from it using minus equal to sine. So this is a syntax of a multicast delegate. Delegate plus equals to name of the function. That's it guys. Thank you for the session. In the next session, we are going to create an example for delegates in unity. C sharp. Thank you so much guys. 47. Understand Single-cast Delegates: Hi friends, My name is Rohan Vase. In this session, we are going to create an example for single cast delegate in Unity. We have already created here two scripts here. One is your delegate handle and the other is my script. Okay, now to begin with, let's start with creating an empty game object. To create an empty game object here, right click here on the delegate scene. Okay, Go to Game object and go to Create, Empty here. Okay? Rename the game object to delegate object, okay? And just attach the script delegate handle to this empty game object here, okay? Click on Add component here and search for delegate handle script, okay? And let's attach the script. Let's just open the script here and let's write a piece of code. Let's define the delegate here in this delegate handle script basically. Okay, so let's remove start and update functions from here. We don't need them, okay? Now to define the delegate, okay, first we have to specify the access modifier. In this case it's going to be public. Okay, Then we are going to use a keyword delegate to define a delegate basically. And then we have to specify the return type, which is wide because we are not going to return anything from this delegate. Okay, let's just specify the name of the delegate. Let's keep it as my delegate. Okay, then let's just create a member variable for this particular delegate that we have just created. Okay? So let's keep the access modified to public here as well. Keep it static. Okay? And then my delegate, okay, the name of the delegate that we have just created here. And then just pass the variable to the delegate. Okay, so let's keep it as my del. Okay, that's it. Okay, so then we have created, we have defined a delegate as my delegate here. Okay, that's the name of the delegate. And then we have created a member variable, my del, for my delegate that we have created here above. Okay, let's create a function here which will actually work on the button. Click on the click of a button. We are going to create a button in the UI, and through the button we are going to call this particular delegate. Okay, let's create a function for that here, public void, my click. Okay, let's pass the variable here, my Dell. Inside the click. When we are going to click the button on the button click, we are going to call this particular function my click. Then we are going to pass this my Dell inside the my click function, which will call the delegate that we have just created, okay? Okay, Image is created in the center. We are not adding any sprite to the image, basically for this particular example, okay? We are going to change the color for the image. Right now it's white in color, Okay? So we're going to change the color using the code, Basically through the script and using the delegate as well. We have already created a script here, which is my script. Okay, let's write a piece of code inside the script to change the color for the image basically. Okay, so we don't need an update function here inside the my script. Let's create a function here to change the color of the image. Okay, so d, let's name the function as change color. Okay? To change the color for the image, we have to call the component image for the image game object. So how do we do that? Okay, game object dot get component image. Okay? Color equals to. To apply random color to the image, we are going to use a function inside Unity engine, which is random dot color HSV. To do that, let's call Unity engine first. Okay? Then let's call random function inside it, do color H, random dolor H, okay? And color HSV is a function. Okay? So this will basically apply random colors to the image color component. Okay? Now, this image component here is showing an error, basically because we need to put using Unity Engine here. Okay, Unity Engine. Okay, now we need to call our delegate handle here. The delegate that we have just defined inside the delegate handle script. We need to call my Dell here in the my script start function basically. So how do we do that? We simply pass the reference to the delegate handle script and then we just need to call my del here, okay? Equals to. We can pass the function change color to this. Okay? So the change color function is then subscribe to the my delegate. Okay, When we call my delegate, change color function is going to get executed. Okay, now let's just say the script. Let's apply this script to the image game object on the button. Click we want to call the delegate, okay, that we have just defined. Go to button here, and then you can see on click here, okay? Just click on the plus sign here to add the function to the list here. Because right now it is empty. We need add the function. We need to add my click. Okay? When we call this function, my click, my delegate will be called. Okay, let's add my click function to this, Okay? Let's just drag and drop delegate object here, okay? And then currently showing no function because we have not attached any function, just click on it. Go to delegate handle, script here. Delegate handle, and just select my click here. That's it. Now when I click on the button here, the color of the image should change. Okay? Just select Image Game Object here, and let's see the color changing here on the button click and here as well, okay. Yes, we can now change the color on the button click. That's it. That's it for the session. In the next session, we'll see an example for multicast delegate in Unity. Thank you so much guys. Thank you so much. 48. Understand Multi-cast Delegates: Hi friends, my name is Rohan Vase. In this session we are going to create an example for multicasts delegate. In the last session we created an example for single cars delegate. And on a button click we were able to change the color for the image this way. Okay, so in this session, basically we are going to add another function to the delegate. When you click on the button, it will not only change the color, but it will also move the position for the image on the x axis. Here, the difference between a single cars delegate and a multicast delegate. In a single cars delegate, only single function can be assigned or subscribed to a delegate. And in the multicast delegate, multiple functions or methods can be assigned or subscribed to the delegate. Let's add one more function to the script. And let's call that function on this button click as well. Let's add a function here to change the position for the image. Let's name the function as changed position, okay? Now to change the position, we are going to use transform dot position for the game object, okay? Basically, we are going to change the transform dot position and we are going to use new vector t here. New vector to function here is specifies the direction of any two game object. Let's change transform dot position for the image. To do that game object do transform position equals to new vector two. Okay? That's the function inside unity. And we have to pass the parameters here for a function, okay? We want to change the position for the game object. Basically on the x axis game object transform position x. Let's add 20 floating point every time we click on the button here. Okay, On the y axis, we don't want to change the position as of now position y, we want to keep it constant. One more thing, let's assign this change position function to the delegate here, okay? Now, in the last session, we have already subscribed this change color function to the del, okay, using equal to sine. Now, if you want multiple functions to be subscribed to the delegate, you need to add a plus sine here. Okay? So let's change it to plus equal to. Okay? Then let's again assign change position function to the del. Okay, so do that. Let's pass a reference to the Dl delegate again. Okay, the p equal to, let's pass the name of the function, change position. Okay, that's it. Okay, let's save the script. Okay, let's see the output here for the code. Just click on the image game object here. Right now, the position X for the image game object is zero, and position for the image game object is zero. We are not going to change position for the image game object, we are just going to change position for the image game object every time we click on the button. It's going to add 20 here. Okay, let's run the scene, and let's see the output. Okay, so let's click on the button. Okay, it's added 20 to it. One more time I click on the button, it's 40 now 60, and yes it is. Changing the position and the color as well. So that's it guys. Thank you for this session. I will see you in the next session. Thank you so much guys. 49. Introduction to Delegate-Events: Hi friends, My name is Rohan Sud. In this session, we are going to see what are events in unity. C sharp. Basically, we can use events with delegates in Unity Sharp. What are events? Events are special multicast delegates which act in the same way as that of delegates. Unlike delegates which can be called by other scripts, events can only be called from within their class. Or script. Difference between delegates and events is as follows. Now we have already seen how you define a delegate in the last sessions. Defining a delegate in delegate handles public delegate void, My delegate public static, my delegate del. Calling a delegate from another script, delegate handle dot del. The above code will run without producing any error. This delegate handle domidel, where we are actually calling the delegate by passing the reference of the script will be executed in Unity. It will not produce any error defining an event in delegate handle, Dotscript, public delegate void, my delegate public static event, my delegate del. So we use an event keyword basically to define an event, trying to call an event from another script, delegate handle del. Now the above code will produce an error and the error will be Delegate handle del can only appear on the left hand side of plus equals to or minus equals to y. Del cannot be passed directly or used directly in another script when it is an event basically. Okay, why to use events along with delegates? Events provide security as they cannot be triggered by other scripts. The logic in the game is not exposed when we use events. Event makes it so that when a delegate is declared as a part of class, it only exposes the add and remove methods as per the access modifier given to the event. Okay, let's say you have a magazine company and people can subscribe to your company to receive new magazine every month. You can think of that delegate as the magazine company. And the event is where people can subscribe to your magazine or your magazine company. So whenever a new edition comes out, the event will basically inform all the people already subscribe that a new edition is out. And yes, you are ready to get the magazine now. Okay. So that's it guys. Thank you for the session. In the next session, we'll create an example for events along with delegate. Thank you so much guys. I will see you in the next session. 50. Move an UI Image to left & right using Delegate-Events: Hi friends, My name is Ron Sede. In this session, we are going to create an example for delegate with events. Okay, for that purpose we have created an image here in the center, and then we have two buttons here. Okay, we have also created an empty game object, event object, and we have attached a script delegate event here. Inside the delegate event script, we are going to declare delegate and events also for the image here we have attached a script event script in which we are going to write a code to move the image on the left or on the right. Let's declare a delegate first, delegate. This delegate is not going to return anything. Okay, let's name the delegate as delegate. Then let's declare an event, public static. Okay, we declare an event using an event keyword and then left delegate, left. Okay, then let's declare another delegate. Delegate, right delegate. Let's declare another event, public static event, right delegate. Now let's create functions here to delegate separately on function left delegate. And the other function will call the right delegate, public left delegate. Inside this, we will call left delegate. Okay, let's declare another function here to call right delegate, public void, right delegate. Inside this function, we are going to call the delegate. Okay, let's declare two functions, public id, left. This is to move the image to the left on the x axis. That's it. This code will move the image to the right. Now let's subscribe our functions here, move left and move right to the events. To do that, let's pass a reference to the script. Delegate event left plus equals to move left, okay? And delegate event right plus equals to move right. That's it. Let's say the script. Okay, let's go to the left button here and click on the plus icon here. Okay, let's track and drop the event object here. Okay? And let's attach the function to delegate event here, okay? And attach left delegate function here. Okay? Now, same way. Go to the right button here, click on plus sign here, drag and drop event object here. And then go to Delegate Event function. And select run, right? Delegate here. Okay, so that's it. Let's run the scene. And let's see the output here. Okay, let's click on the Moo, left button. Okay, the image is moving to the left. Let's click on the right button. The image is moving to the right. So that's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 51. Introduction to Unity Input System: My friends, my name is Rohan Sev. In this session, we are going to learn about input system in Unity. What is an input system? The input system implements a system to use any kind of input device. It could be your mouse, it could be your keyboard, et cetera, to control your Unity content. The input system comprises of two parts, input class and Input Manager. Methods from the input class are used to implement inputs in a game. Input Manager specifies the project settings, where buttons access inputs. Key presses and mouse clicks can be assigned from real devices to virtual inputs. This input manager can be found in Edit Project Settings Input Manager. This is how an input manager would look like. Okay, as stated earlier, input system in Unity can implement any kind of input device, basically. Let's see them one by one. Keyboard inputs. The input system can be used to implement or detect keyboard inputs. We can get input from different operations performed on the keyboard. Some of these operations are as follows. Key press down. Key press down is triggered. Basically, when you press any key input dot get key down. Function is triggered here and inside the function in the brackets, we need to specify the key key code dot space here is used to identify space button on the keyboard, there are various such values, Unity to accept keyboard inputs Hold key pressed, hold key pressed is triggered when you press the key and hold it. Basically input dot get key function is triggered when you keep the key press, okay? Inside input dot get key function, you need to specify the key again. Key released is triggered when you press the key and you release it. Input dot get key triggered when you release the key after pressing it and inside the brackets. Again, we need to specify the key mouse inputs. The input system can be used to implement or detect mouse inputs as well. We can get input from mouse clicks and operations performed on the mouse. Some of these operations are as follows. Mouse button clicked. Mouse button clicked again, is triggered when you click the mouse button. Okay, input dot get mouse button down is the function triggered here. And zero here is the left mouse button. Similarly, one is for the right mouse button and two is for the middle mouse button. Mouse button hold, input dot get mouse button is triggered when you keep the mouse button click, mouse button released is triggered. When you click the mouse button and you release it, input dot get mouse button up is triggered when you do so. Okay, let's go on to the axis inputs. Now an axis refers to a value between -1.1 with zero being a default value. Analog stick provides values on both vertical and horizontal axis between -1.1 Same goes for the keyboard, where left and right arrow keys are the horizontal axis, and up and down arrow keys are the vertical axis, horizontal axis. Input dot get axis. Horizontal is used basically to define the moment on the horizontal axis. And for the vertical axis, we use input dot get axis vertical. That's it guys. Thank you for the session. I will see you in the next session. In the next session, we'll see an example on how to implement keyboard inputs. Immunity. Thank you so much, guys. 52. Understand & implement Keyboard inputs in Unity: Hi friends, my name is Roan Sev. In this session, we are going to implement keyboard inputs in Unity. Okay, for that purpose, we have already created an empty game object, input system object here. And we have also created a script. And the name of the script is keyboard inputs. We have attached a script to the empty game object, which is input system object. Let's write a piece of code inside keyboard input script. Inside the script, we need to implement all the keyboard inputs inside the update function in Unity. Firstly, we need to check what kind of operation is being performed on the keyboard. These operations would be your key pressed, key pressed continuously, and lastly, it would be your key released. Okay, To do so, to begin with, let's check with an if condition, whether the key has been pressed or not. Okay? Let's declare an if condition here. Input get key down inside the bracket. Here we need to specify the key. In this case we are going to use a space key here on the keyboard, okay? Key code space. This is basically for the space bar on the keyboard, okay? And inside this, let's print something in the console. Let's print key has been pressed, okay? Input dot get key down function. We'll check whether the space key on the keyboard has been pressed or not. Let's implement whether the key has been pressed continuously or not. Okay, let's write another condition for that. Input dot get key, key code space. Let's print something inside dysfunction as well continuously. Lastly, let's check if the pressed key has been released or not. To do so, let's write if condition here, input get keyed up. Okay? And let's specify the key, key space, whether the space key has been released or not after it is pressed. Okay, let's print released. Let's add two more functions here to check whether the player has pressed on the left arrow key and the right arrow key as well. Okay, let's write one more condition here. To do so, input dot get key down key code do left arrow inside this, we will print press Okay. And to check whether the player has pressed on the right arrow key or not, let's supply one more condition here. If input do get key down key code right arrow, let's print the right arrow key pressed. Okay. Firstly, I am just going to press the Spacebar key on my keyboard here. And let's check what is the output here. Okay, so the key has been pressed, key has been pressed continuously. This is when I kept the key, basically pressed continuously. And lastly, key has been released, so this is when I released the space bar key. Okay, so let's try with left and right arrow keys. I'm going to press my left arrow key now. Okay, So left arrow key pressed again. Left arrow key pressed. I'm going to press my right arrow key now on the keyboard. Okay, Right arrow key pressed again. Right arrow key pressed. So that's it guys, Thank you so much for the session. In the next session, we are going to have a look at the mouse inputs in Unity. Thank you so much, guys. 53. Understand & implement Mouse inputs in Unity: Hi Franz. My name is Rohan Sev. In this session we are going to implement mouse input, unity. For that purpose, we have already created an empty game object input system object. Here we have also created a script mouse input. And we have attached the script to the empty game object input system object. Let's open the script, and let's write a piece of code. To implement mouse inputs in Unity, we need to implement mouse inputs inside the update function. The way we did for keyboard inputs, we need to check for the operations performed on the mouse. These operations would be mouse button clicked for the first time, then mouse button clicked continuously. Then lastly, mouse button released after being pressed. Let's check whether the mouse button has been clicked or not. To do so, let's write a condition here. Input do get mouse button down inside the bracket. Here we need to specify which mouse button, whether it is a left mouse button, whether it is a right mouse button or it is a middle mouse button. Okay, zero is for the left mouse button, one is for the right mouse button, and two is for the middle mouse button. Okay, so let's print something inside this. Let's write one more condition, or let's use a function in pot get mouse button to check whether the mouse button has been pressed continuously or not. Okay? So if input get mouse button, let's put zero inside this, okay? And let's print something inside this continuously. Okay? Lastly, let's check whether the mouse button has been released or not after pressing it. Okay? If input get mouse button up, let's add zero again inside this for the left mouse button, then let's print mouse dot release. Okay. Okay guys, So I'm going to click the left mouse button here. So yes, mouse button clicked for the first time, then mouse button press continuously. This is when I kept the mouse button clicked and I did not release it here. So it kept on printing mouse button pressed continuously until I released the mouse button. Lastly, here. So that's it guys. Thank you for the session. I will see you in the next session. In the next session, we'll implement access inputs in Unity. Thank you so much guys. 54. Understand & implement Axis inputs in Unity: Hi friends, my name is Rohan Dev. In this session, we are going to learn access inputs in Unity. Access inputs will refer to horizontal and vertical axis, and the value will range from minus one to one in floating points. Okay, for this purpose, we have already created input system object, which is an empty game object. And we have also created a script access inputs. And we have already attached the script access inputs to the empty game object input system object. Let's write a piece of code inside access input. Script axis inputs refer to the values or the floating values between -1.1 both on the horizontal and vertical axis. An analog stick provides values for horizontal and vertical axis between -1.1 Same goes for the keyboard. The horizontal axis will be your left and right arrow keys, and the vertical axis will be your up and down arrow keys for the keyboard. Float, float vertical. Okay? Inside the update function, let's assign value to the variable horizontal. And that value will be input, do get axis horizontal, horizontal equals to input, do get axis horizontal. Inside the double vertical will be your input get axis vertical, horizontal greater than zero on the horizontal axis. If the value is greater than zero, it means that the player has pressed on the right arrow key. Okay, let's print the value for horizontal also. Let's print right right turn. Let's apply an else condition here, L horizontal lesser than zero. This simply means that the player is pressing on the left arrow Key, print horizontal. Let's print left turn inside this left turn. This is for the horizontal axis. Let's apply a few conditions for the vertical axis, vatical greater than zero. This will check if the player has pressed on the arrow key. If the player presses on the arrow key, the value of Tic will be greater than zero. And if the player presses on the down arrowkey, the value for Vatical will be less than zero. Let's bring the value for vertical. Let's apply an L condition for this Tic less than zero. Okay guys, on my keyboard, I'm going to press my left arrow key and print the value for horizontal axis. Okay, so let's scroll this down. Okay, It's left turn and it's showing minus one here. Okay, so I'm going to press my right arrow key. Now the value for horizontal axis is one. And it's printing right turn here. I'm going to press my up arrow key. Now the value for the vertical axis is one here and it's printing up. Okay, I'm going to press my down arrow key. Now the value for vertical axis is minus one now, and it's printing down here. Okay, So that's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 55. Introduction to Physics Engine & Rigidbody: Friends. My name is Rohan Vasudev. In this session, we'll be talking about physics and frigid body in Unity. Physics in Unity is handled by Built In Physics Engine. Unity is built in. Physics Engine runs the physics for game object interactions and various effects such as gravity acceleration, collisions, et cetera. Unity simulates physics to ensure that the objects correctly accelerate and respond to the collisions, gravity, and various other forces. To have convincing physical behavior, an object in a game must accelerate correctly and be affected by collisions, gravity, and other forces. Unities built in Physics Engine provide components that handle the physical simulation for you that behave passively in a realistic way. There are two separate physics engines in Unity, one for Thredyphysics and one for two D physics. The main concepts are identical between the two engines, but their implementation is different. For example, there is rigid body component for Thrediphysics and rigid two D component for two D physics. Let's talk about rigid body immunity. Now, Rigid body immunity allows a game object to have physical behavior. It will interact with other game objects. The Unity physics engine only knows that an object is meant to be acted on by the physics if the rigid body component is attached to the game object. Properties of a rigid body mass, drag, angular use, Gravity is nematic interpolate, collision detection and constraints. Let's see one by one, what does these properties mean? Let's talk about mass here. Mass is the mass of the game object. Drag is the air resistance value applied to the game object. Angular drag. Angular drag is the air resistance value affecting the rotation of the object is kinematic. If enabled, object will not be affected by physics engine in Unity interpolate. It is used to smoothen the moment of the object collision detection. It changes the type of collision detection on the object, constant freezes, moment and rotation on certain axis of the game object. That's it guys. Thank you for the session. I will see you in the next session. Thank you so much, guys. 56. Applying Rigidbody to the Sphere gameobject: Hi friends, My name is Rohan Sud. In this session we are going to create an example for Rigid Body. For the demonstration purpose we are going to create a three D game object which is going to be sphere. And we're going to apply rigid body to the sphere basically. Okay, so let's start with creating a floor which will be a three D game object which is plane. For that purpose, go to game object, go to three D object and select plate here. Okay? Right now, the plane is not visible on the camera. To do that, just reset the transform value for the plane. Okay, and yes, it is visible in the camera. Again, let's create a three D game object, which is sphere. Go to game object, go to three D object and select Sphere here. Again, reset the transform for the sphere here. Okay, go to scene mode here and slightly bring the sphere above the ground. Okay, this is how it should look. The sphere basically stays floating in the air. Right now, we have not applied any rigid body to the sphere. Let's stop running the scene, and let's apply the rigid body to the sphere. Now, click on Ad Component, go to Rigid Body here, and yes, the rigid body component is attached to the sphere game object here. Let's run the scene again, and let's see the output here. Okay, the sphere now falls on the floor. Let's understand the properties for the rigid body one by one. Okay, let's stop running the scene here. Mass here basically is the mass for the sphere. It is right now set to one. Drag is the air resistance value applied to the sphere game object. Angular drag is the air resistance value, again, applied to the game object that will affect the rotation of the sphere. Okay, use gravity. Here is the gravitational force applied to the sphere game object. If we check the checkbox here or if we check the Use gravity to true here, that means that the gravitational force is applied here to the sphere game object. Let's uncheck the Use Gravity here and let's run the scene again. Since we have said the use gravity property here to falls now it does not fall on the floor. Let's set the use gravity property to true again. And the sphere will fall on the plan game object. Okay, let's stop running the scene again is kinematic property. Here basically will define whether the physics engine will affect the game object or not. Let's set it to true here and let's run the scene again by setting is nematic to true here. The spear basically is not affected by the physics engine anymore. Okay, let's uncheck the property and the sphere will fall on the floor. Again, collision detection is basically the type of detection okay, that will act upon on the sphere. There are four options, Discrete, continuous, continuous, dynamic, and continuous, speculative. Then we have interpolate. Interpolate. It smoothens the moment of the game object. Right now, it is set to none. We have two options here, interpolate and extrapolate. We will understand this or we'll learn more about this in the upcoming sessions. Okay, constraints property here is basically used to freeze the position or rotation of the game object on x, y, or z axis. Let's check y axis here, and let's see if the sphere falls on the floor or not. Okay, the sphere does not fall on the floor, it is again floating in the air. Let's uncheck the y axis here, and yes, the sphere falls again on the floor. So this is how rigid body works on any three D game object. So that's it guys. Thank you for the session. In the next session we'll see an example on how to move the sphere using a rigid body component. Thank you so much guys. I'll see you in the next session. Thank you so much. 57. Applying Material to the Sphere gameobject: Hi friends, My name is Rohan Vasudev. In the last session, we applied rigid body component to the sphere. In this session, we are going to move the sphere using rigid body component inside the script. This session is going to be a three part session. In the first session, we are going to create a texture and apply the texture on the sphere. Basically, we are going to create a material. What is a material? Material specifies the optical properties of the game object. For example, it's color, whether it is dull or whether it is shiny. Texture is basically an image which is a layover or wrap around the game object, which again provide the visual effects for the game object. Okay, so to start with, let's create a folder here and let's create a Material to create a folder, right click here inside the Assets folder to create. And click on folder here, rename the folder to Materials. Materials. Okay? Open the Material folder, right click here inside the Material folder again, and select Material to create a material. Okay? Name the material as beach ball or the name, could be anything of your choice. Okay, we have created a material here for the ball. We need to apply the texture here for the ball. Now, texture is basically, as I stated earlier, is an image, so we need to download an image from the Internet. What we'll do here is we'll apply a beach ball texture here to our ball basically. Okay, Just click on the color map here. Okay? And just right click here and save images. Okay, Images. Okay, so your image has been downloaded now. Just click on Showing the folder, open your Unity, Go to the folder here, and just drag and drop the image here inside the Material folder. Okay, that's it. Select the Material again. Okay, Click on Albedo here, okay, And just select Beach Ball Color. We have applied the texture here to the material. We need to apply this material to our sphere game object. Just click on the sphere game object here. And inside the inspector window, just drag and drop the material here for the spear game object. Okay, and that's it. We can see here material has been applied or the texture has been applied to the ball here. So that's it guys, thank you for the session. In the next session, we will be creating a floor for the ball to move. Thank you so much guys. I will see you in the next session. 58. Create a floor for the Sphere to move: Friends, My name is Rohan Vasuev. In the last session we applied texture to the ball. In this session we are going to create a floor. We have already created a material for the floor here. Okay. And also we have downloaded texture for the floor from the Internet. Okay, let's apply this material to the plane game object here. In this case, plain is going to be our floor. We're going to have multiple plain game objects to create one big floor. Before creating multiple plain game objects, we need to create an empty game object and name it as Floor. That will be the parent game object for all our plain game objects because we need to keep everything organized. Okay, let's right click here on the scene and create empty game object. Rename the empty game object here to floor, okay? And just track the plain object inside the floor game object. Okay, now we need to replicate plane here multiple times to create one big floor. To do that, just select Plan Game Object and click on control D and it will replicate the game object. Now we need to adjust the plane, one game object here. To do that basically we need to keep the move tool selected here in the editor and just drag this. Okay? Does it look fine? Yes, it looks good. Yes, it looks good. Okay, again. Now click on plane one game object here, and click on Control D. Here we have created our floor. Okay, let's go to game mode and let's see how it looks. Let's bring the camera on the top to give it a better view. Thank you so much, guys. Thank you for the session. In the next session, we're going to move the ball using a rigid body component. Thank you so much, guys. I will see you in the next session. 59. Move the Sphere using Rigidbody attached to it: Hi friends. My name is Rohan Sev. In this session, we are going to move the sphere using rigid body component attached to the sphere. For the demonstration purpose, we have already created a rigid body move and we have attached a script to the sphere game object here. Now to move the sphere, we will have to declare a few variables here. Okay, float variable, vertical, float variable, horizontal A, float speed equals to five. And rigid body R B. Okay? This rigid body R B is basically used to get the rigid body component from the sphere. To get the rigid body component, we will have to use get component function in Unity. Okay? We will have to initialize the rigid body variable using get component function, component, rigid body, okay? Inside the update function. We have already seen this in the previous sessions. How do we use input dot get axis? In this session we are going to implement input. Do get access to move the sphere basically, but to move the sphere again, we are going to use a rigid body component of the sphere. Now inside the update function equals to horizontal, equals to horizontal. Okay, let's apply L's conditions here inside the update function to check whether we are pressing on the up arrow key, whether we are pressing on the down arrow key, whether we are pressing on the left arrow key, or we are pressing on the right arrow key. To do so, let's apply the first condition here for the vertical axis. If vertical greater than zero, RB a force vector three forward into speed. Let's apply another if condition. If vertical lesser than zero. Okay, so let's apply force to the rigid body again at force vector three back into speed. Now let's apply conditions for the horizontal axis to check whether the player has pressed on the left arrow key or the right arrow key. Okay? To do so, if horizontal greater than zero, this condition will be for the right arrow key. Okay? R B a force vector three right into speed. And lastly, horizontal smaller than zero, R B, add force vector three left into speed, okay? So the ball is moving now. We can increase the speed, or we can decrease the speed, okay? So for that purpose we will have to declare two more variables here. Public game object, camera, okay? And then let's declare one more variable of vector three. Let's name the variable as offset. This variable will be the distance, basically, that we're going to calculate between the camera and the sphere game object. Okay, let's assign some value here to the offset variable, okay? The start of the scene offset equals to n vector three. Camera transform position x. Camera trans form position y plus one. Okay? We want to keep the camera basically slightly above on the y axis. And then camera dot transform, position s minus transform do position, transform do position is the position of the sphere here. Okay, so now we have set the value for offset. First condition here. If vertical greater than zero. Let's add one more line of code here. Camera transform position equals to transform position is the position for the sphere, okay? Plus your offset plus the distance. We'll have to replicate this code, okay? Basically, in all the if conditions here. Lastly, we will have to specify an Ls condition here as well. Wherein if the ball is not moving, if the ball is not moving, again, we have to specify the same code. Camera transform plus offset. Okay, that's it. Let's save the script here and let's go to the editor. Okay, Click on the Sphere game object here. Just click on Made Camera and just drag the object and just place it here. That's it. Okay. Okay, so that's it. That's it. We have our camera following the sphere as well. So that's it guys. Thank you so much for the session. I will see you in the next session. Thank you so much. 60. Introduction to Colliders & Collisions in Unity: Hi friends. My name is Rohan Masudev. In this session we are going to talk about colliders, triggers, and collisions in Unity. So what are colliders in Unity? Colliders are components in Unity that provide collision detection between the game objects. They define the shape of game object for the purpose of physical collision. There must also be one rigid body attached to one of the game objects to detect collisions. Colliders allow you to listen to and respond to collisions. Colliders can be of many types, but mainly there are two types, two de collider and three collider. For two game objects to de colliders are used. And for three game objects, three D colliders are used. Let's talk about Box collider three D. Now when you create any three game object in Unity three D collider is attached to it by default, which is indicated by green border lines around the game object. In the image here, we can see we have created a three game object which is cubes. The green line surrounding here, the cube game object basically is the collider. This collider can be manipulated to be larger or smaller than the box, depending on the objective of your game, how you want Unity's colliders to interact with each other, utilizing Unity's physics engine. Let's talk about collision triggers. Now when two game objects collide with each other, Unity provides events that are called. There are mainly two types of events, collision trigger events and collision events. Collision triggers are used mainly when we want to trigger some events that should be ignored by the physics engine. When two objects collide, they will pass through each other, but some events will be fired. At least one of them must have a rigid body component attached to it. Trigger events can be achieved by setting the trigger option to be true in the collider component. Once we set it to be true, it will be ignored by the physics engine and can be used to trigger events when the game object collides with another game object. There are three events for collision triggers and they are as follows on Trigger Enter. On Trigger Enter is called when one collider comes in contact with other. With one of the colliders having trigger enabled called only once. Then we have on trigger stay. On trigger stay is called frame when there is contact between collider and the trigger, it is called multiple times until there is contact between the two colliders. On trigger exit, on trigger exit is called once the collider stops touching the trigger. Called only once. Okay, let's talk about collisions. Now a collision in Unity happens when two game objects with colliders attached interact with each other. They may touch each other, stay in contact with each other, or may stop colliding. At least one of them must have a rigid body component for the physics engine to recognize them as colliders. There are three events for collision. They are as follows on Collision Enter, called when one collider comes in contact with another collider called only once on collision stay call for every frame when there is contact between colliders called multiple times until there is contact on collision exit called once the collider stops touching another collider called only on. Let's see the difference between trigger and collision. Trigger invoked by event system when two game objects overlap each other, collision is invoked by physics engine. When two game objects collide with each other. Collision information is shared through the trigger events, which is on trigger enter, on trigger stay and on trigger exit collision information is shared to the collision events which is on collision enter, on collision stay and on collision exit. Trigger property in collider component is enabled. Trigger property here in collider component is disabled for collision. Trigger is used to sense the presence of other game objects. Collision is used to physically interact with other game objects. That's it guys. I will see you in the next session. Thank you so much guys. 61. Adding 3D Cube gameobjects on the floor & add Tags to them: Friends. My name is Roan Suev. In this session we are going to create an example for collision detections. We are going to create some obstacles in the path here. These obstacles will be cube game objects. Basically, to begin with, let's create an empty game object here. Okay? Create empty and rename the game object to obstacles. Now inside the obstacles object, we're going to create some cubes. To do so, right click here on the obstacles and go to three D object here. And click on Q. As we all can see here, when we create a cube game object, box collider is attached to it by default. Let's add a rigid body as well to the cube here. Okay, let's increase the mass for the cube game object to ten here. Let's just drag and drop one material on the cube here. Scale the size of the cube game object a bit. It's looking too small in size. Let's keep it to 1.5 Okay, let's bring it up a little bit. The game object is already selected here. Just click on control D to replicate the game objects so that we can create more obstacles. On the way for the sphere, we have created the obstacles, we have created 123456 obstacles. On the way for the Sphere tag is basically to identify the game object through script, select game object here, and go to Tags here, and click on a T. Okay? Click on the plus sign here and add a new tag name. Keep it as one. Okay? Add one more tag name. Keep it as cube two. Cube two, save. All right, so we have created two tags, cube one and cube two. Again, select on cube here for the tags it is tagged. Right now, just click on the drop down and select cube one here. Then go to cube one here and select one here for this. Okay, basically for the white cubes, we are going to select one as a tag. For the black cubes, we are going to select cube two as a tag. Okay, so let's run the scene. And let's move the ball. Okay, let's move the sphere here. Right now the sphere is colliding with the cube game objects here. Okay, but since we have not added any collision events inside the script, we are not performing any actions on it. Basically, in the next session we're going to use collision events inside the script to detect collisions. And we are also going to use the tags we have just created here. Okay guys, thank you so much. I'll see you in the next session. Thank you so much, guys. 62. Detect Collision with the 3D Cube using Tags: Friends. My name is Ron Vase. In this session, we are going to implement collision events inside the Unity script. These collision events are on collision Enter, on collision stay, and on collision exit. Let's write a piece of code inside the Unity script. Let's begin with On collision Enter. Function on collision enter will be called when two rigid bodies collide with each other, or two colliders collide with each other void. On collision Enter, let's pass a collision class. Collision class holds all the information, for example, impact, velocity, and contact points, collision inside. On collision enter, we are going to use tags that we created in the last session. We had created two tags, cube one and cube two. Cube one tag for the white cubes and cube two tags was for the black cubes. Basically, let's write at if codition inside on collision enter function call object tag equals to equals to cube one. Basically if it is a white cube then we're going to print something inside this debug log collision started with white que. Okay, this condition is for the white que. Let's write an Elsif condition. Elf call game object tag equals to, equals to two bad log collision started with cube. Okay? So let's write another function here which is on collision stay. On collision stay function is called once per frame. Okay, void on collision stay. Let's write an if condition again. Here we stay black cube. Lastly, we're going to use on collision exit function. On collision exit function will be called when two Richard bodies or colliders stop colliding with each other. Okay, so we have implemented all three functions here on collision enter, on collision stay, and on collision exit. So let's run the scene and let's see how this thing works. Let's collide with the white cube here when the spear collided with the white cube. We all can see here collision started with white cube and then we have collision stay with white cube since the spear is still colliding with the On collision exit has not been called yet. But once I move the Pal away from the cube here. Okay, collision exited with white cube will be called. So let's go and collide with the black cube now. Okay, so this is the black cube. Okay, so collision stay with black cube. Let's move the spear away from the black cube and let's see what it prints. Okay, collision exited with black. So that's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 63. Introduction to 2D & 3D Animations in Unity: Hi friends, My name is Rohan Maze. In this session we're going to talk about Animations Unity. So what is animation's Unity? Unity's animation system is based on the concept of animation clips. Which contain information about how certain objects should change their position, rotation, or other properties over time. These animation clips are then organized into a structured flow chart like system called an animator controller. The animator controller acts as a state machine which keeps track of which clip should currently be playing and when the animations should change or blend together. A simple animator controller might only contain one or two clips. For example, to control a rotation or bounce. Or to animate a door opening and closing at the correct time. A more advanced animator controller might contain dozens of humanoid animations for all the main characters actions such as walking, running, shooting, et cetera. So this is how an animator controller looks like. This animator controller which has idle and walking animation clips is attached to the humanoid character here. Okay, now let's talk about animation state machine. What is animation state machine? Animation state machine keeps track of which clip should currently be playing and when the animations should change or blend together. It is common for a character or other animated game object to have several different animations that correspond to different actions it can perform inside the game. A character may sway slightly while idle walk when commanded to, and raise its arms in panic as it falls from a platform. A door may have animations for opening, closing, getting jammed, and being broken open. Unity animation uses a visual layout system similar to a flow chart to represent a state machine. Which enables you to control and sequence the animation clips that you want to use on your character or any other game object. What are state machine transitions? State machine transition simplifies large or complex state machines. Each view in the animator window has an entry and exit node, used during state machine transitions. The entry node is used when transitioning into a state machine. The entry node will be evaluated and will branch to the destination state or to the animation clip according to the conditions set. The exit node is used to indicate that a state machine should exit. Now, in the image below, we can see the entry node is transitioning into the idle animation here, Idle animation here being the default state. The idle animation will then transition either into walking or into the running animation clip depending upon the condition set inside de animator controller. That's it guys. Thank you for the session. I will see you in the next session. In the next session we'll create an animation on a sprite. Thank you so much guys. 64. Slice a Spritesheet into multiple Sprites & apply walking animation: My friends, my name is Rohan Sev. In this session, we are going to create an animation on the sprite. Sprite is basically an image for the demonstration purpose. We have already created a two project in Unity and we have also created a scene Sprite NM inside the project. To begin with, we need to import sprite sheet in the project. What is sprite sheet? Sprite sheet is basically multiple images in a single image in a grid. This is how a sprite sheet would look like. These are basically multiple images packaged into one single image, and this is called a sprite sheet. All right, let's begin with downloading this image here. Now let's get the sprite sheet inside the Unity project here. But before doing that, let's create a folder and name the folder as sprite sheet. Okay, Click on Create here, and click on Folder Name the folder as Sprite Sheet. Open the folder and just drag this inside the sprite sheet folder. All right, so this is one single image, now we need to slice it into multiple images. So how do we do that? Firstly, select the image. All right, In the sprite mode here, select multiple, Okay, And click on Apply here. And click on the sprite editor here. This window will open up. All right, once you get this window open, click on Slice Slice option here. Click anywhere on the screen. And click on Apply, Close the window. And yes, we have multiple images here. Okay. As you all can see here, we have Sp star, single image into multiple images now. All right, now we need to use all these multiple images to create an animation. Since we have created multiple sprites out of a single sprite sheet, we will select this particular image. It's an ideal image for the person walking. Just drag and drop the person here. Let's scale the size of the sprite here. Let's scale it to two x y axis. Okay? Perfect. Now select on the sprite here and go to Animation tab. All right, so let's click on Create to add an animation. Rename the animation walking animation. All right, click on Save here. Let's drag the Animation tab here somewhere. Extend this. What do we do next? We need to select all the sprites here, apart from the original sprite which is already there inside the scene. Okay, Click on control button here and keep on selecting all the other sprites or all other animations which we want to add. Again, it depends on what kind of animation it is. Maybe we want to use just four sprites, then just select four sprites. If we want to use all the sprites, then select all the sprites. All right, I need all the sprites, so I'm selecting all the sprites here, okay? Just drag and drop all the sprites here, okay? Again, get the tab here to be more comfortable. All right, let's see how the animation looks Now, it's too fast. What do we do here? Okay, scroll your mouse and okay, minimize this thing. Okay. To make it a little slow, just increase this to, I think 50 is fine here. Yeah, just try the animation again. I think it's perfect now. It's looking good. Let's stop this, save the scene, let's run the scene here, and let's see the output. All right, perfect. We have our sprite walking here. That is how we do animations. Thank you so much guys. Thank you for the session. In the next session, we are going to create a background image or the background for the scene here. And also we're going to move this sprite to left or to right, depending on what arrow keys you're pressing down there. All right. So thank you so much guys. I'll see you in the next session. Thank you so much. 65. Add background to the Scene: Friends, My name is Rohan Masudev. In the last session we created an animation on the sprite here. We created a walking animation clip here for the sprite. All right, when we did that, this animator controller was created. Right now, we have applied only one walking animation clip to this particular animator controller right here in this session, we are going to apply a background image here for this particular scene. Before that we need to have a background image. Either you can create it or you can download it from the web. I'm going to download this image and apply it as a background for the C. I've already downloaded this image here. Let's get this image into our project. Just track this image here. We have imported the image here inside our project. Now the next step would be to create an empty game object, which will serve as a background image basically. All right, right click here on the scene and go to Game Object and click Create Empty here. All right. Rename the game object to background, okay? And just drag and drop this image on the background empty game object here. All right, Right now the image is not looking good at all. We need to adjust the scale for the image basically. All right, let's keep it to, let's say 0.3 on x axis, 0.3 on y axis, and 0.3 on the said axis. Click on the scene tab here. Now this image is not enough. We want to create a huge scene here because we're going to walk eventually using control keys. All right, what to do next is just choose the image here inside the background empty game object, and click on control D. All right. Now select the move tool here and just move the image, okay? And again, click on this particular image, which is right in the center. Again, click on control D. With the help of move tool, just move the image here. All right, now the sprite is up in the air and it's flying in the air. We need to make it look like it's on the ground. What to do next is just select your sprite in the sea and just bring it down. Okay, let's go to the sea now. And looks fine now. Looks better. Let's click on the play button here, and let's see how it looks. All right, it's looking good. The animation is being played and we have a background image as well set for our scene. Currently, if you see here, in spite of playing the animation or applying the animation on the sprite, currently the sprite is not moving forward in the forward direction. Okay, in the next session we are going to apply the script to the sprite. Basically to move the sprite in the forward and in the backward direction. Again, we'll create an animation which will be an idle animation. If you are not pressing any keys, then sprite should stay idle and should stop walking here. All right guys, Thank you for the session. I will see you in the next session. Thank you so much guys. 66. Move the animated Sprite using keyboard inputs: Friends, My name is Rowan Suv. In the last session we animated the sprite. In this session we are going to move the sprite using Unity C sharp script. Okay, for that purpose, let's create a folder here called scripts. Open the scripts folder here, and let's write a C sharp script inside the scripts folder. Sprite is the name of the script. Let's write a piece of code inside the move sprite script. Okay, let's declare a float variable here, float horizontal. We're going to move the sprite on the horizontal axis, float horizontal. All right, let's remove the start method. We don't need a start function here inside the update function. Let's assign a value to the horizontal float variable, which will be your input axis, horizontal. Okay, let's apply a condition to check if the sprite is moving in the right direction or the left direction. To check if the sprite is moving in the right direction, let's apply a condition if horizontal greater than zero. All right, inside this, let's use get component. And inside get component, we are going to get Sprite Renderer, which is by default attached to the sprite. So when we create a sprite, sprite renderer component is attached to it. So we are getting Sprite Renderer component, okay, Sprite Renderer component, flip X equals to falls, Okay, flip X basically will flip the sprite on the x axis. Over here, we want to keep the sprite as it is. We don't want to flip it when the sprite is moving in the right direction. So we're going to keep it to falls again, let's declare a vector three, variable vector three moment equals to n vector three. Okay? On the x axis, I want to apply 1.5 0.0 okay? Into equals to time delta time. All right, we're going to move the sprite using transform translate function. Transform translate and insight translate. We're going to add movement very. Okay, so let's apply another condition which is horizontal less than zero. If get component sprite render a flip x equals to true when the sprite is moving in the left direction, we are going to flip the sprite on the x axis. Basically vector three moment equals to n, vector three -1.5 on the x axis, zero on the y axis, and zero on the z axis. All right, again, movement into equals to t delta time. Lastly, changing the position or transform for the sprite Using transform, translate function in Unity translate and inside translate, we're going to add moment here. Okay, let's save the script and let's attach the script to the sprite here. Let's just drag and drop the script on the sprite. The script is attached here to the sprite. Now let's run the game, and let's see how it works. All right, let's press the right arrow key on the keyboard, and the sprite starts moving in the right direction. Let's press the left arrow key on the keyboard, and the sprite starts moving in the left direction. It works fine, but there is a problem here. Even if I stop pressing the arrow keys, we all can see here the animation is not stopping here. Okay, the animation goes on. So in the next session, what we'll be doing, we'll be applying another animation to the sprite basically, which will be an idle animation. So once I release the keys on the keyboard, all right, idle animation will be played. And once I again press on the keys, the walking animation will be played again. So thank you so much. That's it guys. I will see you in the next session. Thank you so much guys. 67. Apply idle animation to the Sprite & make Camera follow the Sprite: Hi friends. My name is Rohan Vasudev. In the last session, we moved the sprite using transformed or translate function in Unity. In this session, we are going to apply idle animation to the sprite so that when we stop pressing on the left or the right arrow key, the idle animation will be played and the walking animation will be stopped playing. All right, so to do that, let's start with creating an idle animation for the sprite here. Select the sprite here in the scene. Go to Animation tab and click on the drop down here. And create a new clip for the sprite. Okay, just click Create new clip here. All right. Now inside any folder or the sprite sheet folder, we can create a new animation clip. Name the clip as idle animation. Okay, save the script. Bring the animation tab here. Click on the sprite sheet here, and drag the first sprite here, which is an idle animation sprite. Basically, this is an idle sprite which will be used for idle animation. Again, bring the animation tab here. Just click on the play button. Okay, it's not doing anything because it's an idle animation. When we stop pressing on the left or the right arrow key, this animation will be played. We have two animations here. One is the walking animation. Another is the idle animation. All right, over here, the default animation is walking animation. If we hit the play button, then the starting animation will be a walking animation. Let's change it to idle animation. Okay? Because that should be the entry point. All right, so let's go to animator tab again. Click on idle animation here and click on Set as default state. This will be the default state once we start on the Play button in the game. Let's create some transitions. Basically, when we hit the Play button, this animation is played as it is set as a default animation now. But when we click on the left or the right arrow key, walking animation will be played. To do so, just right click on the idle animation. Click on transition to walking animation. All right. Similarly right click on the walking animation. Make transition and then bring it down to the idle animation. Just click on the arrow here, deselect this. Click on the settings here. And transition duration make it to zero because we don't want to set any duration. Transition duration is basically the duration for the transition between the two animations. Okay, Again, click on this arrow and check this has exit time. And set the transition duration here to zero again. All right, now we need to set some conditions to check whether the player is pressing on the arrow keys or not pressing on the arrow keys. Okay, so do so. We need to create a parameter here. Let's create a new parameter by pressing on the plus button here. Now there are four types of parameters that we can create. We are going to create here a bool data type of parameter. Okay, Let's give it a name, Can walk. This is the name of the parameter. Again, click here on the arrow, okay? And set the condition here. If can walk is true, then walking animation will be played. And if can walk is false, then idle animation will be played. Let's set one condition here. Can walk true. This simply means if can walk is true, walking animation will be played, okay? Click on the arrow here, again, again, set a condition, okay? If can walk is false, then idle animation will be played. Now we need to call the animator which is attached to the sprite. So to do so, let's declare an animator here, animator name. Okay, We don't have a start function here. Let's add start function. We need to initialize the animator. All right. As soon as the game start any equals to get component animator. All right, now inside this we need to set the poll which is can walk to true if we press on the arrow key. To do so, anim dot set pool, the name of the parameter can walk and set it to true here. Okay, Again, inside this condition, again we need to set the ball to true. Set B can walk to true. All right, let's declare an L's condition here. So if the player is not walking or the character is not walking, let's set the anim set. Bull can walk to falls again. Can walk falls. All right, let's save the script here. Everything is set here. Let's run the game. And let's see the output. Right now, I'm not pressing on the arrow keys here, the idle animation is being played. Let's click on, or let's press on the right arrow key here. And the walking animation starts playing. All right, the moment I release the key, idle animation is being played again. Let's move to left again. Okay, the walking animation starts. Let me release the arrow key here. All right, we'll make the main camera follow the character here. So it's very simple to do. So let's select Main Camera here and make it the child object for the sprite game object here or the sprite here. Okay, so just drag it and put it inside your sprite. All right, let's play the scene again. All right, so the camera is following the player as well. Okay, it stops. Okay, here we go. Looking good. All right, so that's it. Thank you so much guys. I will see you in the next session. Thank you so much guys. 68. Import 3D Character in Unity & apply walking animation: Hi friends. My name is Rohan Vasudev. In this session, we are going to create a animation for three D character here. This three D character, we are going to download from our website, which is Mixamo.com by Adobe. Also the animation for this particular character, we are going to download from Mixamo. All right, so let's go to the website and let's start downloading the character and the animation for the same. Here we are on Mixamo.com All right, You can choose any of the characters here. Okay, I'm going to choose this character here. Let's click on the download button here. Post should be Post. We have downloaded the character from Mixamo. Now let's go and get the character inside the three D characters folder, which we have created inside the Assets folder. Let's just drag and drop it here. Before putting the character inside the scene, let's create a floor for the character to walk on. All right, let's go to Game object, go to three D object and let's create a plane here. Okay, plane is not visible. Just go to transform here and click on Reset. All right, that's good. Okay, let's create another plane here so that we can have a bigger flow. And let's suggest the thing, okay, so we have a bigger flow now. All right, let's try getting this character inside our scene, such as drag and drop it here. Okay, so we have our character inside the scene now, but we can see, all right, there are no materials or textures on the character. To apply textures on the character, what we need to do is just select the character here, okay. And click on Materials, and click Use External Materials, Legacy, and click Apply. And the material should be applied. Now to the character. We can see the materials or the textures applied to the character. Now the way it was on Amo.com click on the Rig tab here, Animation type. This is a humanoid character, so need to select Humanoid here. And click on the Apply button here. Now next go to Animation here and check Look Time here, okay? And click on Apply here, but there is no animation applied to it. To apply the animation, let's again go to Amo.com and click on the animation tab here. And we want to walking. Animation, Search for walking. Okay, let's select this. Animation Perfect. Perfect. Mutant walking is the name of the animation clip which we are going to apply on our character while walking. Okay, Click on download here. Format BX for Unity is fine. All right, and this should be without Sky. Click on the download button here. All right, let's get this animation clip inside our three D characters folder again by just dragging and dropping it here. Let's select this which is an animation clip. Okay, go to rig here and again animation type to humanoid create from this model. And click on Apply button here. Go to Animation tab Again, check on Loop time, begin to pose. Check this based upon body orientation. And click on Apply here. Again, select my character here. Now what we need to do is we need to create an animator controller. Okay, So go to Create here and click on animator controller. Okay, My controller name the animator controller to my controller. Just open the animator controller and let's just track this walking clip here inside the animator controller. All right, now let's go to my character again here and apply this animator controller for the character. Let's run the scene here. Yes, the character is walking. Let's get the character a bit behind in a camera view. Okay? All right, the character is walking, but we want our character to move with the arrow keys. In the next session, we're going to apply the script to the character along with character controller. That's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 69. Move the 3D Character using keyboard inputs: Friends, My name is Rohan Masrev. In the last session we applied animation to this character. In this session, we are going to make the character walk in the forward direction when we press on the arrow keys on the keyboard. Let's select my character here and uncheck. Apply root motion. Basically, since we are going to move this character using arrow keys, we will uncheck this. Apply root motion here. Then we need to modify the walking animation, which we apply to the character here. Okay, let's run the scene and let's see the difference here. Let's see how the animation looks. Now we have unchecked the applied root motion now. All right, so the character walks at one place. It's not moving forward because we are going to move the character using the arrow keys now. Now let's scroll down here and go to root transform position y for the walking animation clip. This is the walking animation clip which we applied on the character. Okay? For the root transform position Y based upon chains are based upon two feet. Okay? And click on apply here, Perfect. This is the animation that we want in our cave. Here we are on Mamo.com I've already searched for the idle animation and I am going to apply this unnamed idle animation for our character. Okay, This is how our character is going to look when it's idle, when it's not walking. Let's download the clip here. Vx for Unity BX. All right, and without skin, let's click on the download button and download the animation clip. Okay, I've downloaded the idle animation. Let's drag the animation inside the three D characters folder. Now click on my idle animation clip. Go to rig here, animation type slcumanoid, and click on Apply the animation here. Check on the loop time, okay? And for root transform position y. Again, change this to feet and click on apply here. Click on the animator controller that we created last time. And thus drag the, my ideal animation here inside the animator controller. Right click on my ideal animation and set this as layer default state. All right, let's go to the game tab here and let's see how the animation looks. Okay, It looks fine. Perfect. Inside the animator controller. This is the entry point. This is the idle animation. We need to create the transitions here. Right click here on the idle animation. And make transition to the mutant walking right click here on the mutant walking animation. And make transition to the idle animation. Okay, Click on the arrow here and select has exit time. Click here on this arrow and check has exit time. Let's create a bool parameter here. Okay? And let's name the parameter as can walk. Let's again select on the arrow here. And let's add the parameter. Let's add a condition here. Suppose if can walk value is true mutant, or the character will start walking. And if the can walk is false, then the idle animation will be played here. Let's start with declaring a public float variable here. Public float speed. That will be the speed of the character. Let's keep it to 2.0 F animator tanning, public float gravity. That's the gravity for the character. Let's keep it to nine, public float vertical speed equals to zero. Okay, also we are going to use a Character controller here. Character controller is basically used to move the character in Unity Character Controller controller. And then inside the start function controller equals to get component Character controller. Okay? And then equals to get component. Animator. We have not applied character controller to our character yet. Okay, once we write the script, we are going to apply character controller to our character. All right, let's declare a function here to move the character. Let's name the function as move. Okay, so florizontal equals to put, get axis horizontal. And float vertical equals to input get access vertical. Let's write if condition to check if the controller is grounded. There is a property in character controller which checks if the character is grounded or not. Let's apply if condition controller do is grounded, vertical speed equals to zero L vertical speed minus equals to gravity into time delta time. After the L condition, we are again going to declare a vector three, gravity move equals to n vector 30, vertical speed and zero. Then there is one more vector three to actually move the player vector three equals to transform forward into vertical plus transform right into horizontal. We're going to use the controller now to basically move the player controller move, which is the function inside the controller, inside character controller. In the function, we need to pass the parameters, which is your player speed into delta t into plus gravity, move into time delta time. Gravity move into time delta time. Lastly, any set bull can walk vertical n equals to zero or horizontal n equals to zero. Let's call this smooth function, insidety update function Here. Let's save the script. Okay, before running the scene, we need to apply the character controller to our character. Click on Add Component, Select Character Controller here. Okay, so we have applied character controller to the character. Now we need to adjust the center for the character controller on the y axis, basically. Okay, let's bring it up here also, let's change the height. Increase the height a bit. Let's add a script here which is character walk to the character before running the scene. Let's get the camera here inside the my character so that the camera will follow the player basically. Let's run the scene and let's see how it looks. Yeah, that's fine. Okay, looking good. That's it guys. In the next session, we are going to apply rotation to the camera and to the character as well. If we want to move backward, then we can just rotate the using mouse here. And also the player will be rotated along with the camera as well. That's it guys. Thank you for the session. I will see you in the next session. Thank you so much guys. 70. Apply rotation to the Camera & make it follow the 3D character: Hi friends, My name is Rohan Sue. In the last session we applied animation to this three D character. In this session we are going to apply rotation to the camera. Basically, we are going to add a piece of code in the script character walk, which we applied to this character in the last session. Let's go and write a piece of code inside character walk script. Here we are in the script. Let's declare some variables again. Now to rotate the camera. Basically public transform my cam, public lot mouse sensitivity. We are going to rotate the camera using a mouse. Here, this variable is for the sensitivity of the mouse equals to two. Public float up limit equals to -50 And public float down limit equals to 50 F. Okay, so we have declared four variables here. Let's write a function here to rotate the camera we rotate. That's the name of the function inside the function. Float horizontal equals to input dot get axis, mouse x float vertical equals to input do get axis, mouse Y transform Rotate. Basically to rotate the character zero on the x axis, horizontal into mouse sensitivity on the y axis, and again zero on the z axis. My rotate minus vertical into mouse sensitivity and 0.0 on the z axis. Now let's get the current rotation for the camera using vector three. Vector three current rotation equals to M local ural angles. Local Euler angles Is basically used to set the rotation of a game object relative to its parent coordinate system. All right, if rotation x greater than 180, current rotation x minus equals to 360. Now next current rotation x equals to lamp matlam function in Unity Basically clamps the value, any floating or any integer value between a given range, between a minimum and maximum range. All right, the clam function takes three parameters here. First is the variable which needs to be clam. Second is the minimum value. And the third parameter is the maximum value here. All right, we need to clamp current rotation x, up limit and down limit. Okay? Now, lastly, let's set the local rotation for the camera. My local rotation equals to quaternion dot Euler. Inside the Euler, we need to pass current rotation. All right, let's declare this rotate function inside the update function now. Okay, so rotate. Let's save the script now. And let's go to the Unity editor now. All right, click on my character here. And for the character walk script, okay, we can see a property here which is my, it's showing none transform here. So we need to just drag and drop main camera inside this perfect. So we can see the camera rotating here. What if we want to move backwards here? We can just rotate the camera and walk back again. All right. All right, perfect. Looks great. Oh, okay, that's perfect. All right guys, thank you so much. I will see you in the next session. Thank you so much, guys. 71. Design a level for Knock the Cans 3D game: Hi friends. My name is Rohan Sev. In this session, we are going to create a game called Knock the Cans. The purpose of this game, basically, will be to knock the cans off. So there will be five cans. All right, and we're going to knock these cans using a ball. Let's start the process of creating a game. Let's create Plane here first for the game. Go to Three D and click on Plane here. Reset the plane. 2000. Get the camera on the z axis to -5.435 0.43 Okay, that's fine. Go to Three D object and click on plane here. Okay, let's bring it to zero. Let's keep it to 04.524 0.06 rotation on x axis will be 270. All right, that's it. Let's create a ball holder here. Basically, a ball holder is going to be a cube. Okay, I'm going to create a cube. You can use any kind of assets you want to. You can use tables. You can use chairs, whatever you want to. I'm going to create a cube here as a ball holder. All right, so let's create a cube. Let's scale the cube on the x axis to one. On the y axis, keep it to 0.2 and on the z axis keep it to 0.3 Okay? Position the cube on the x axis to 00.51 -4.68 Let's create another here can hold, and this is your ball holder. Okay, let's go to can holder. Again, position the can holder on the x axis to zero here, 0.5 n on the z axis to -1.8 I have downloaded some textures here. Let's just drag and drop the texture for the ball holder here. All right, on this our ball will be placed basically in the center. Okay, let's apply the texture for the can holder here. Let's apply textures for the ground here. Plane one, plane two here. Now let's create cans. How do we create cans? We're going to create a cylinder, basically, for the cans. All right, let's create your first can here. So go to Game Object, go to Three D, click on cylinder here. Let's go to Scene more and scale the can. 20.30 0.30 0.3 Let's place the can here. I think it's too big. Let's scale it down to 0.2 probably. Yeah, 0.2 and 0.2 Okay, looks better down. Okay, let's place it here. That's the first can. Our can has got a capsule collider here. Let's remove a capsule collider for the can. And let's apply a maze collider. Okay? And click on convex here. Let's add a rigid body to the can. Now let's go to the can holder here. And let's apply a rigid body to can holder as well. Okay, let's increase the mask to probably 500. Select the cylinder game object here or your first can and press on control D to replicate the can basically. Okay, let's just place the cans here properly. Okay, I've created all then Let's give it a little darker look for the main camera here. I don't want a sky box select solid color. Let's apply a black color to it. For the directional light. I don't want a directional light here. Let's make it dark. And let's add a spot light to it. Okay, let's bring it here. Let's adjust the spot light. Let's add one more spot light to it. Yeah, that looks better. Let's reduce the range a little bit till it starts looking good here. That looks better. All right, let's create a ball here, which will be placed on the ball holder here. We have to create a prefabire basically, which will be spawned or instantiated when we click on the spawn button, which we are going to create later. All right, for the ball, let's create a game object here. Go to Game Object and click on Radio object, and click on Speer here. All right, scale the ball to 0.15 on the x axis, 0.15 on the y axis, and 0.15 on the z axis. On the x axis position, the ball to zero on the y axis position to ball 20.691 on the z axis position to ball two -4.695 All right, let's apply a texture to the ball now. Okay, perfect. Now let's create a button here on the extreme left to spawn the ball, because this ball will only be spawned when you click on the spawn button here. Right click here, game object Y, and click on button here. Okay, left bottom, 55.5 on the y axis to 26.60 is fine. Keep the width of the button to 84.5 All right, let's change the color for the button here that matches the background. Okay, let's change the text color for the button. Okay. And change the text to spawn. All right, that's it. We have created a level here. In the next session, we're going to create a script to shoot the ball, to drag and shoot the ball basically, and to knock the cans down. Also, we're going to create a script to spawn the ball once we throw the ball on the can. That's it guys. Thank you for the session. Thank you so much. I will see you in the next session, guys. 72. Applying Logic to knock the cans down - Part 1: Friends, My name is Rohan Sev. In the last session we created a level for the game. All right, in this session we are going to apply a script to the ball so that we can throw the ball. Shoot the ball on the cans here. But before doing so, let's go to the Sphere game object here, which is our ball. And let's apply a rigid body to it. Click on Add Component here and select Rigid Body here. Let's go and write a piece of code. Let's create a script here so that we can attach that script to the Sphere game object. And then we can throw the ball on the cans. All right, let's start writing a piece of code here. Before doing so, we need to declare a few variables here. Private vector three, mouse press down position, then private vector three, mouse release position, then the rigid body to get the rigid body applied to the sphere game object, rigid body RB. Then we have private bull variable to check if we have thrown the ball or not. To vector three, throw destination y one and y two. Okay, we don't need an update function here, so let's remove the update function inside the start function, let's call a rigid body, R B equals to get component rigid body. So here we are going to use two functions inside unit one is your mouse down. Mouse down is used to detect when we have clicked the mouse button. And the second function is the mouse up function. It is triggered when you actually release the mouse button. All right, so let's create void on mouse function. Mouse press down position because this is where you are clicking on the ball to throw it. All right, mouse press down position equals to input dot mouse position, the ray one equals two, camera main screen point to ray. Mouse press down position. Camera screen point to function basically returns a ray going from camera through a screen point. After this, we're going to declare one up function. This is triggered when you release the mouse. All right, mouse release position equals to input mouse position. Okay, this is when you release the mouse to shoot the ball again. Ray two equals to camera, main screen, point to mouse release position. We're going to create a cast, hit, hit result. What is cast Cast in Unity is like a laser beam. Basically, it's like a ray basically, which starts from its origin point, moves ahead in its specified direction and goes to its maximum distance specified. All right, cast will return true if it gets hit with any object falls. Now this object needs to have a collider, then physics two and then out throw destination equals to F result point. Let's create another function to actually shoot the ball in this particular direction. Now we have a throw destination. Okay, so let's create a function here to actually shoot the ball void cath, then return equals to true R B for n vector three. Throw destination x on the x axis, then throw destination on the y axis, and throw destination again on the z axis into 160 is fine. Let's declare this cast function here inside one up function. Okay, so when we release the mouse recast shoot function will be triggered here. Click on the spear game object. Here we have already applied rigid body. Let's apply the script now. Drag and throw. Okay, let's run the scene and let's see if we can shoot the ball on the cans now. Yes. All right guys, thank you so much. I will see you in the next session. Thank you so much guys. 73. Applying Logic to knock the cans down - Part 2: My friends, my name is Rohan Vase. In this session, we are going to create two scripts. One is the managers script, which is going to manage the entire game. And the other is the script where we are going to detect if the can has been knocked down or not. But before doing so, we are going to create a tag and attach this tag to the plain game object here. Okay, so go to plain object and select tag here, and click on a tag. Then new tag, name my crowd. Just save it. All right, so we have our tag here which is my ground. Again. Click on plain game object, go to tag and select my ground here. All right, Okay. Inside the manager script, let's declare two variables. Public in number of cans equals to zero. Public in chance count equals to zero. Now let's create an empty game Object Manager. And let's attach the Managers script to the empty game object. All right, game object, create empty name the object as Manager go to add component here and manager script. Let's start with declaring the variable bole j equals to false. Then we have inside the start function, we need to find the game object to which this manager script is attached to. How do we do that? M equals to find object type manager inside the update. Let's write if condition to check if the can has been knocked down or not. We are going to check for the position of the can. Basically, let's write F condition. If game object transform do up y lesser than 0.5 check equals to equals to false, number of knock equals to m, number of cans knocked plus one and check equals to true. Now to detect the collision with the floor, let's write on collision enter function here, void on collision enter collision call call game object tag equals to equals to my ground and check falls number of cans knocked equals to m, number of cans knocked plus one checked equals to true. Click on cylinder one here, he can down to view the number of cans knockdown. Click on the manager game object here and let's run the scene. Let's throw the ball. Okay, we have one can knock down. Okay, let's play the game again. Okay, we have knocked two cans. Now it's working perfect. But we can see here the chance count is not increasing. Let's also increase the number of chance count. Here, let's declare a. Okay? And again, M equals to find object of type manager inside the car shoot function M, chance count equals to M chance count plus one. Okay, so four cans, number of cans knocked is four and chance count is one. It's working. Perfect. Thank you guys. Thank you for the session. In the next session, we are going to write a script to spawn the ball. Thank you guys. I'll see you in the next session. Thank you so much. 74. Prefab creation & Instantiation in Knock the Cans game: Hi friends, my name is Rohan Suede. In this session, we are going to spawn the ball using this spawn button Here altogether, the player is going to get five chances to spawn the ball. All right, but to spawn the ball, we need to create a prefab out of the ball. A prefab is basically a simple template which can be used to create instances of that particular game object. All right, but before creating a prefab of the ball, let's tag the ball first. Okay, go to the spear game object here and click on Tag and add new tag here. Name the tag as my ball and save it. Okay, Again, click on the sphere game object here. Go to tag and select my ball here. All right, and the tag, my ball now is added to the sphere game object. Okay, after doing that, create a folder called prefabs inside the asset folder. And just drag and drop your sphere game object inside the prefabs folder and the prefab is created. Since we have created a prefab here, we will disable the sphere game object. And the Sphere game object by default won't be visible inside the scene unless we click on the spawn button here. Okay, so let's go and write a piece of code to spawn the Sphere game object or the ball in the game. All right, so I have already created a script here called ball spawn. Let's declare a few variables here. Manager M, game object, ball inside the start function. Again, we need to find the object of type manager, find object of type manager. We don't need an update function here. Let's just remove the update function instead of update function. Let's create a function, a custom function, public void spawn ball. Let's write an if condition. If game object find object with tag, my ball equals to null. This is to check if the ball is already been spawned or not. Chance count less than five, We are giving the player only five chances to knock all the cans off. Okay, the chance count should be lesser than five if we want to spawn the ball. To spawn the ball, we need to use instantiate, which is a function in Unity. Let's put a ball and the position at which we want to spawn the object. Zero on the x axis, 0.691 on the y axis, -4.695 on the z axis, and for the rotation squatanion identity. Let's write an condition also print ball exists. Now go to drag and throw script. Once we shoot the ball here and once the chance count is increased by one here or incremented by one here. Let's destroy the game object here, Destroy game object after 3 seconds. Let's create an empty game object here, and name the game object as spawn. Okay, create empty. Let's name this object as spawn object. Okay, and let's attach the script ball spawn to this object. Ball spawn. Okay, now we can see none game object here for the ball. So let's just drag and drop the prefab here. Inside this, open the canvas here, go to the button, this is the spawn button. Basically click on this Plus here, just drag the spawn object here. Go to ball spawn and spawn ball function. And let's run the scene and let's see if we are able to spawn the ball or not. Okay, let's strike clicking on the spawn button here. Yes, we are able to spawn the ball. Okay, ball already exists. Okay, let's go to the manager here and let's look at the chance count. So yes, it's two. Let's spawn the ball again. Okay. Three, okay. Three cans knocked and four chances gone. Are we able to spawn the ball now? Oh, here it shows ball already exists. Chance count is five year, and in fact, our game is over. So in the next session, we are going to create a pop up. Okay, wherein we are going to display the game is over once the chance count is five. All right guys, Thank you so much. I will see you in the next session. Thank you so much, guys. 75. Create a win or lose system in the game & final words: Friends, My name is Ron Masurev. In this session, we are going to create a pop up to know if the player has won the game or if the player has lost the game. Right, click on the canvas here, go to Y and click on Panel. Let's name it as Wind Panel here. And keep it to stretch. Stretch. Let's adjust the panel. Now let's change the color for the panel here. Now inside the panel, let's add text, right? Click on the panel here, go to Y and go to text Mesio. Let's reduce the size to 16. Yes, that's fine. Let's change the color for the text here. Let's keep it to red color. Let's change again the color for the button here. Let's keep it yellowish button. Extend the button here. Let's change this to replay again. Change the color for the font here or the text. Let's keep it to black. Uncheck the wind panel now, because we don't want to show it at the start of the game, we just want to show it if the player wins the game here. Let's just check this on the text here. Instead of won the game, just change it to Lost the game. Keep the text for the button as it is. Okay, we have created two panel, one is the wind panel. Another is the loose panel here. Uncheck the loose panel here. Now let's go to the managers script. And let's write a piece of code to actually display these panels on the basis of the results, whether the player has lost the game or whether the player has won the game. Let's declare a bull variable here. Bol, decision made equals to false. Public game wind panel, public game object, loose panel. Now let's create a coutine function here. Tine is basically a special function Unity used to stop any kind of execution until some condition is met. Again, it continues from where it has left off. Enumerator load, wind panel yield return, new weight for seconds, one wind panel set active through then decision made equals to true. I enumerator load loose panel yield return new weight for seconds, 3.5 loose panel set active, true decision made equals to true. Inside the update function, if number of cans knocked equals to equals to five, decision made equals to equals to falls and chance count lesser than equal to five. To run the cortine function, we need to use start curtin. Inside this we can pass our function which is load wind panel. If number of cans knock lesser than five and decision made equals to equals to, falls chance count equals to equals to five. Then start curtin load loose panel. That's it. Now go to the manager game object here. Just drag and drop wind panel here to wind panel and loose panel here for the loose panel. All right, so this is a replay script. We don't need start and update functions here. Let's create a function here to restart a game. Public void Restart Scene Manager, Load scene, knock can level one. That's the name of our scene. Basically it's knock cans level one. But we can see the error here. Okay, Unity Engine management, we need to import Unity Engine. Do Seen Management. If we want to use scene manager in the scene, extend the wind panel here and go to the button inside the wind panel. Click on Ad Component and Silplay, click on the here, drag the button here to replay Silic Restart here. Let's run the scene now and let's see how the game looks now. Okay, you have won the game, great. So let's click on the replay button here. Okay, you have lost the game. Let's click on the replay button again, and we can again start playing the game here. So that's it guys, that's the end of the gaming with Unity part one. Here in this series, we started with Unity installation and basics of C Sharp such as variable declaration, control, flow, statements, loops and collections. Furthermore, we went on to creating UI, Unity events and delegates and learned about Unity input system. We also learned about physics engine immunity, which included rigid body and collisions. Proceeding further, we learned about Tod and Three D animations in Unity. And lastly, we developed a game called Knock the Cans Down, but this is not the end of the tutorial. Soon I'll be coming up with more complex topics on gaming. Wearing the End, we will be developing a RPG shooter based game in Unity. That's it guys, Thank you for all the support and thank you for listening to me. Thank you so much, guys. See you soon again. Thank you so much.