qzdoom-gpl/wadsrc/static/actors/shared/camera.txt

ACTOR DoomBuilderCamera
{
	States
	{
	Spawn:
		TNT1 A 1
		Stop
	}
}


ACTOR SecurityCamera native 
{
	+NOBLOCKMAP 
	+NOGRAVITY
	+DONTSPLASH
	RenderStyle None
	CameraHeight 0
}

ACTOR AimingCamera : SecurityCamera native 
{
}