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Custom camera...moving camera forward/backward at current rotation?


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Not as efficient, but you can also do some one liners with Vector3 Methods (untested):

camera.cameraDirection.addInPlace(
   new Vector3(Math.sin(camera.rotation.y), 0, Math.cos(camera.rotation.y)).scale(forward ? 1 : -1)
);

note: if you are building something to share, I think the Z needs to be inverse on right-handed scenes.

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