/obj/screen/plane_master
	screen_loc = "CENTER"
	icon_state = "blank"
	appearance_flags = PLANE_MASTER|NO_CLIENT_COLOR
	blend_mode = BLEND_OVERLAY
	var/show_alpha = 255
	var/hide_alpha = 0

/obj/screen/plane_master/proc/Show(override)
	alpha = override || show_alpha

/obj/screen/plane_master/proc/Hide(override)
	alpha = override || hide_alpha

//Why do plane masters need a backdrop sometimes? Read https://secure.byond.com/forum/?post=2141928
//Trust me, you need one. Period. If you don't think you do, you're doing something extremely wrong.
/obj/screen/plane_master/proc/backdrop(mob/mymob)

/obj/screen/plane_master/floor
	name = "floor plane master"
	plane = FLOOR_PLANE
	appearance_flags = PLANE_MASTER
	blend_mode = BLEND_OVERLAY

/obj/screen/plane_master/game_world
	name = "game world plane master"
	plane = GAME_PLANE
	appearance_flags = PLANE_MASTER //should use client color
	blend_mode = BLEND_OVERLAY

/obj/screen/plane_master/game_world/backdrop(mob/mymob)
	if(istype(mymob) && mymob.client && mymob.client.prefs && mymob.client.prefs.ambientocclusion)
		add_filter("ambient_occlusion", 0, AMBIENT_OCCLUSION)
	else
		remove_filter("ambient_occlusion")
	update_filters()

/obj/screen/plane_master/lighting
	name = "lighting plane master"
	plane = LIGHTING_PLANE
	blend_mode = BLEND_MULTIPLY
	mouse_opacity = MOUSE_OPACITY_TRANSPARENT

/obj/screen/plane_master/parallax
	name = "parallax plane master"
	plane = PLANE_SPACE_PARALLAX
	blend_mode = BLEND_MULTIPLY
	mouse_opacity = MOUSE_OPACITY_TRANSPARENT

/obj/screen/plane_master/parallax_white
	name = "parallax whitifier plane master"
	plane = PLANE_SPACE

/obj/screen/plane_master/lighting/backdrop(mob/mymob)
	mymob.overlay_fullscreen("lighting_backdrop_lit", /obj/screen/fullscreen/lighting_backdrop/lit)
	mymob.overlay_fullscreen("lighting_backdrop_unlit", /obj/screen/fullscreen/lighting_backdrop/unlit)

/obj/screen/plane_master/camera_static
	name = "camera static plane master"
	plane = CAMERA_STATIC_PLANE
	appearance_flags = PLANE_MASTER
	blend_mode = BLEND_OVERLAY