I have a camera 9 units up, tilted down at a 60° angle (rotated around it’s X-Axis), which means forward for the camera is pointed down at the floor as shown in the picture below
Now when I press W, i want the camera to move horizontally forward without changing it’s Y coordinate, but not along the world Z axis, as that breaks when the camera is rotated around it’s Y axis. Here are a few images demonstrating what I want
Side view:
Top view:
