Unity2D-transform.position不等于现实世界的位置

Question

Okay, the title may be confusing cause I don't how to know put it.

My case: I have a 2d sprite with 4 child objects, each one place around the sprite as a perimeter. So it looks like this:

Spawner2 has a script with the following method, which is called at the start of the game. Inside the script, I instantiated a new prefab:

public void GenerateBox(int count)
{
    ...
    GameObject spawnedRoom = Instantiate(possibleRooms[chosen], transform.position, Quaterion.identity);
}

But this instantiates the object at Spawner1's location.

So I tried to debug. I pulled Spawner2 out of its parent and see the location (which is X: 1.0062, Y: -0.0038). I put it back inside the 2d sprite and when I debug.log it's position, it gives me X: 0, Y: 1, Z: -9.8.

Is it because of my prefab? What is the problem and how can I fix it?

Answer 1

Use this overloaded method instead:

Instantiate(Object original, Vector3 position, Quaternion rotation, Transform parent);

and pass the Spawner2 parent transform as the last parameter. Now new object should be positioned in the same place as the Spawner2. In the end your function should look like this:

public void GenerateBox(int count)
{
    ...
    GameObject spawnedRoom = Instantiate(possibleRooms[chosen], transform.position, Quaterion.identity, transform.parent);
}

Answer 2

EDIT: I started a new project and did the exact same thing except now, the prefab position is set to 0 on all axis. Everything works fine now. I'm guessing this happens because of the prefab's position. For example, you instantiate the prefab in the script at (0, 0, 0) world position and the prefab position is (2, 1, 0), then the prefab will spawn at (2, 1, 0) world position. It's position + prefab position .