How to convert Node3D's rotation to a vector

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1

Godot Version

4.6.1-stable

Quesion

I feel like I’m having a problem that’s caused by doing things the wrong way. I have a weapon bound to the player camera which spawns a bullet, and sets its transform to the one of a ShootOrigin Marker3D. This works correctly however I don’t know how to make it move in its relative Z+ (as it’s marked top level to avoid it being rotated by the player rotating the view).

The solution I came up with was to create a new Vector3 and calculate the absolute change in position for each axis using sin and cos however I’m ashamed to admit I did not pay enough attention in physics class.

Should I see if I can study up on how to do calculations on vectors in 3D space or did I miss something?

2

Move it along marker’s global_basis.z value at the moment of spawning.

1 Like
3

I cant say that definitely ; but i think this can help you :

first create a basic node or marker3d as the child of your gun or anything you want to rotate and put it before the rotating object ( gun or anything ) ;

than you can make a vector from the rotation by ( marker.global_position - gun.global_position).normalized()

4

That wouldn’t work, the marker is fixed to the gun, which is fixed to the player and their camera, so if bullet moves along the marker’s global_basis and the player moves wouldn’t the bullet move with the player?

5

It’d work if you copy that vector’s value at the moment you spawn the bullet and continue using it onward.

6

No it just makes a direction and it wouldnt move the bullet with player