3D Modeling for Games

1. Introduction

In this tutorial, we will be learning about 3D modeling for games. This is an essential skill for anyone interested in game development. You will learn how to create 3D models, texture them, and import them into a game engine.

What you will learn:

• Basics of 3D modeling
• Texturing 3D models
• Importing models into a game engine

Prerequisites:

• Basic knowledge of computer graphics
• Familiarity with a 3D modeling software (like Blender)
• Familiarity with a game engine (like Unity)

2. Step-by-Step Guide

2.1 3D Modeling

3D modeling is the process of creating a mathematical representation of a three-dimensional object. In this tutorial, we will use Blender, a free and open-source 3D creation suite.

Best Practices:
- Start with simple shapes and gradually add details.
- Regularly check your model from different angles.

2.2 Texturing

Texturing is the process of applying images to your 3D models to give them color, texture, and more depth.

Best Practices:
- Keep your textures in powers of 2 (128, 256, 512, 1024, etc.) as many game engines prefer these sizes.
- Test your textures often on your 3D model to get a better understanding of how they look.

2.3 Importing into a Game Engine

Once you have your 3D model and texture, it's time to import them into a game engine. For this tutorial, we will use Unity.

Best Practices:
- Organize your assets in a clear and consistent manner.
- Check your model in the game engine often to see how it looks in the game environment.

3. Code Examples

Unfortunately, 3D modeling and texturing are more visual processes and don't involve coding. The import process in Unity is also a drag-and-drop process with no code involved. However, once the model is in Unity, you can manipulate it using code. Here's an example of how you might do that using C#:

public class RotateObject : MonoBehaviour
{
    // Rotation speed in degrees per second.
    public float rotationSpeed = 30f;

    void Update()
    {
        // Rotate the object around its local X axis.
        transform.Rotate(rotationSpeed * Time.deltaTime, 0f, 0f);
    }
}

4. Summary

In this tutorial, we have learned the basics of 3D modeling, texturing, and how to import these models into a game engine.

Next Steps:
- Experiment with creating different types of models and textures.
- Learn about different types of lighting and how they can affect your models.

Additional Resources:
- Blender Guru's Beginner Tutorial Series: https://www.youtube.com/playlist?list=PLjEaoINr3zgEq0u2MzVgAaHEBt--xLB6U
- Unity Learn: https://learn.unity.com/

5. Practice Exercises

Exercise 1: Create a simple 3D model of a cube and apply a texture to it.

Exercise 2: Import your cube model into Unity and write a script to rotate it.

Exercise 3: Create a more complex 3D model of your choice, texture it, and import it into Unity. Write a script to manipulate it in some way (e.g., move, rotate, scale).

Tips for Further Practice: Experiment with different types of models, textures, and scripts. Try creating a small scene in Unity using your own models.