🧪 Variables and Data Types – Your Game’s Memory Bank

• Welcome to your first real coding lesson!
• Let’s start with one of the most important concepts in C#:
• Variables – the way we store stuff in memory so we can use it in our games.

• Imagine a game with no memory. The player collects coins… then forgets.
• They take damage… then feel fine.
• Sounds like a forgetful fish simulator 🐟

🧠 What is a Variable?

A variable is like a labeled box that holds information.

1int score = 10;

This says:

In C#, we have to tell the computer what type of data we want to store.

📦 Common Data Types in Unity

🎮 Example in Unity

Let’s create a script called PlayerStats.cs and use variables to represent a player’s data:

1UnityEngine;2 3public class PlayerStats : MonoBehaviour4{5    public int health = 100;6    public float moveSpeed = 5.5f;7    public string playerName = "Player1";8    public bool hasPowerUp = false;9}

Attach this script to any GameObject, and these variables will appear in the Inspector for easy editing.

Unity even lets you tweak them mid-game for testing! 🔥

🤔 What’s "public" and "private"?

• public = visible in the Inspector and accessible by other scripts
• private = hidden from the Inspector (default if you don't write anything)

• We’ll dive deeper into access modifiers later. For now, just know:
• If you want to see it in the Unity editor - make it public.

✨ Mini Challenge: Create Your Own Stats Script

1. Create a new script called EnemyStats.cs
2. Add the following variables: int health
3. float damage
4. string enemyName
5. bool isBoss
6. Attach it to a new GameObject in the scene
7. Change values in the Inspector and hit Play

🎉 You’ve just made a system that can handle unique enemies in your game!

🧠 Recap

• Variables store game info like score, health, speed, etc.
• You must choose the right data type for each value
• Use public to show variables in Unity’s Inspector
• Now you're not just a player-you’re a game architect

🚀 What’s Next?

Next up, you’ll learn how to actually do stuff with your variables using methods and parameters.

🛠️ Go to Lesson 8 → Methods and Parameters in Unity C#