Can't move a Camera3D with code

[boundsout]

Godot Version

v4.2.2.stable.mono.official [15073afe3]

Question

I am trying to do local multiplayer in 2D, so I decided to use a camera that is separate from the player. I wanted to make the camera 3D like Unity, but I can’t get it change position. Here’s the code:

func _physics_process(_delta):
var posavg: Vector2 = Vector2(0, 0)
for player in players:
posavg += player.position
posavg /= players.size()
camera.transform.origin = Vector3(posavg.x, posavg.y, 10)

And even though I set it to the middle of the scene, it’s always off to the side.

Can someone help me, or is this just an issue with using a 3D camera in a 2D scene?

[dharhix]

I haven’t played with 3D in Godot yet, but it might be the translation from 2D->3D making the problem. Note that this is guesswork on my part.

What I would do to test it out would be to use a proper 2D cam and see if your current code acts the way you want it to. Then go from there.

[athousandships]

A 3D camera doesn’t interact with 2D transforms, so you can’t move the camera and have the 2D rendering move, because 2D and 2D are entirely separate

[lordadentus]

Somebody correct me if I am wrong…

My guess is that you are trying to get to something that zooms in/out using a 3d camera.

I think using a 3d camera is a bad idea in this case. You are better of using a 2d camera.

To use a 3d camera you would have to take your 2d scene and display it in a 3d scene on a plane. Now, you would be able to move your 3d camera along that 3d plane that displays your 2d world.

In your example what I think you managed to do is to display your 2d world on the 3d camera, so when you move the camera you move the 2d world as well.

[athousandships]

2D is always drawn, for UI etc., but it’s not relative to the 3D camera, that wouldn’t make any sense, so there’s no reason, or way, to use a 3D camera here, just use a 2D one

See here and here for split screen logic examples