🎮 Understanding Update() in Unity: Why my object keeps moving? Step 5

This week I learned something that changed how I see Unity..

It’s called Update(). At first, I just copied it because everyone uses it. But I didn’t really understand what it does. Then something clicked. And now it makes sense.

🧠 What is update()?

Update() is a special method in Unity. Unity runs it automatically. Not once. Not sometimes. It runs every single frame. If your game runs at 60 FPS, that means:

👉 Update() runs 60 times per second. That’s why movement goes inside it.

🚀 Why my object was moving forever?

When I wrote this:

void Update()
{
    transform.Translate(Vector3.right * 5 * Time.deltaTime);
}

My object started moving continuously. At first I thought: “Why doesn’t it stop?” Now I understand. Because Unity keeps calling Update() again and again and again. It’s like a heartbeat for the game.

🔁 What happens without Update()?

If I put movement inside Start():

void Start()
{
    transform.Translate(Vector3.right);
}

It only moves once. One small step. That’s it. So now I see the difference:

• Start() → runs once
• Update() → runs every frame

🧩 Why this is important?

Games are not static. They need to:

• Check player input
• Move objects
• Update animations
• Run logic

All of that usually happens inside Update(). Now I don’t just copy it anymore. I understand why it’s there.

🧠 What I’m realizing

Game development is not magic. It’s just systems running repeatedly and responding to conditions. When something moves, it’s not random. It’s because Unity is asking every frame: “What should happen now?” and my script answers.

🚀 What’s next

Next I want to understand more about: Input system, how to stop movement, maybe jumping logic. Every lesson makes things a little less mysterious and honestly, that feels good.