gzdoom/wadsrc/static/zscript/shared/movingcamera.txt

class InterpolationPoint : Actor native
{
	default
	{
		+NOBLOCKMAP
		+NOGRAVITY
		+DONTSPLASH
		RenderStyle "None";
	}
}

class InterpolationSpecial : Actor native
{
	default
	{
		+NOBLOCKMAP
		+NOSECTOR
		+NOGRAVITY
		+DONTSPLASH
	}
}

class PathFollower : Actor native
{
	default
	{
		+NOBLOCKMAP
		+NOSECTOR
		+NOGRAVITY
		+DONTSPLASH
	}
}

class ActorMover : PathFollower native
{
}

class MovingCamera : PathFollower native
{
	default
	{
		CameraHeight 0;
	}
}