Basic Unity Course: C# First Encounter with Computers

In the latest game development environment, Unity is one of the most widely used game engines, favored by many developers due to its powerful features and flexibility. In this course, we will start with the basics of Unity and learn in detail how to communicate with the computer using C#.

1. What is Unity?

Unity is a cross-platform engine for 3D and 2D game development, equipped with functions like graphics, physics, and artificial intelligence. Unity is used not only in game development but also in various fields such as education, film, and simulation.

The main features of Unity include a user-friendly interface, visual scripting, and real-time rendering. As a result, users from novices to experts can approach it in various ways.

2. What is C#?

C# (C-sharp) is an object-oriented programming language developed by Microsoft, widely used for scripting in Unity. C# has a simple syntax and clearly reflects the principles of object-oriented programming, making it suitable for both beginners and professionals.

Features of C# include strong type specification, automatic memory management, and concise syntax, enabling various functionalities like implementing programming logic or controlling UI in Unity.

3. Installing Unity

To use Unity, you first need to install it. You can manage and install multiple versions of Unity using Unity Hub. Here is the installation process.

1. Download Unity Hub from the official Unity website.
2. Run the downloaded file and install Unity Hub.
3. After launching Unity Hub, you can add your desired version of Unity in ‘Installs’.
4. Select the necessary modules (e.g., Android Build Support, WebGL Build Support, etc.) and install them.

4. Creating a Unity Project

You can easily create projects through Unity Hub. Below is the project creation process.

1. Launch Unity Hub.
2. Click the ‘New’ button in the ‘Projects’ tab.
3. Enter a project name and set the path to save it.
4. Select either a 2D or 3D project.
5. Click the ‘Create’ button to create the project.

5. Adding a C# Script

You can write C# scripts in Unity to add behavior to game objects. Below is how to add a script.

1. Click the ‘Create’ button in the ‘Hierarchy’ panel of the Unity Editor.
2. Select ‘Create Empty’ to create an empty game object.
3. Select the created game object, then click the ‘Add Component’ button in the ‘Inspector’ panel.
4. Select ‘New Script’, enter the script name, and then click ‘Create and Add’.

6. Basic Syntax of C#

The basic syntax of C# consists of the following key elements.

6.1 Variables and Data Types

Variables are spaces for storing data, and C# provides various data types.

For example, integer (int), floating-point (float, double), character (char), and string (string) types are available.

        
            int score = 100;
            float health = 75.5f;
            char grade = 'A';
            string playerName = "Player1";
        
        

6.2 Conditional Statements

Conditional statements are structures that determine the execution of code based on specific conditions. C# uses if, else if, and else statements.

        
            if (score >= 90) {
                Debug.Log("Excellent");
            } else if (score >= 80) {
                Debug.Log("Good");
            } else {
                Debug.Log("Needs Improvement");
            }
        
        

6.3 Loops

Loops are structures that repeatedly execute a block of code, which includes for, while, and foreach statements.

        
            for (int i = 0; i < 5; i++) {
                Debug.Log("Loop execution: " + i);
            }
        
        

7. Writing a Simple C# Script

Now, let's write a simple script using C# to greet the computer.
The following script outputs the message "Hello, Computer!" when the game starts.

        
            using UnityEngine;

            public class HelloWorld : MonoBehaviour {
                void Start() {
                    Debug.Log("Hello, Computer!");
                }
            }
        
    

8. Running the Script

After adding the written script to a game object, click the 'Play' button to run the game.
You will be able to see the message "Hello, Computer!" printed in the console window.

9. Moving on to the Next Step

Now that you have a basic understanding of Unity and C#, you are ready to delve deeper into game development.
The next steps include learning about user input handling, interaction with the physics engine, and AI implementation.
This will allow you to create more dynamic games.

10. Conclusion

In this course, we learned the basics of Unity and C#, and created a simple program to greet the computer for the first time.
Through ongoing practice and learning, you can progress to a level where you can create your own games.
In the next course, we will cover more functions and methodologies for game development, so please look forward to it!