functionality

code/_onclick/hud/plane_master.dm

@@ -16,6 +16,7 @@
 //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)
 
+///Things rendered on "openspace"; holes in multi-z
 /obj/screen/plane_master/openspace
 	name = "open space plane master"
 	plane = FLOOR_OPENSPACE_PLANE
@@ -38,12 +39,14 @@
 /obj/screen/plane_master/proc/clear_filters()
 	filters = list()
 
+///Contains just the floor
 /obj/screen/plane_master/floor
 	name = "floor plane master"
 	plane = FLOOR_PLANE
 	appearance_flags = PLANE_MASTER
 	blend_mode = BLEND_OVERLAY
 
+///Contains most things in the game world
 /obj/screen/plane_master/game_world
 	name = "game world plane master"
 	plane = GAME_PLANE
@@ -57,12 +60,60 @@
 		remove_filter("ambient_occlusion")
 	update_filters()
 
+///Contains all lighting objects
 /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/lighting/Initialize()
+	. = ..()
+	filters += filter(type="alpha", render_source=EMISSIVE_RENDER_TARGET, flags=MASK_INVERSE)
+	filters += filter(type="alpha", render_source=EMISSIVE_UNBLOCKABLE_RENDER_TARGET, flags=MASK_INVERSE)
+
+/**
+  * Things placed on this mask the lighting plane. Doesn't render directly.
+  *
+  * Gets masked by blocking plane. Use for things that you want blocked by
+  * mobs, items, etc.
+  */
+/obj/screen/plane_master/emissive
+	name = "emissive plane master"
+	plane = EMISSIVE_PLANE
+	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
+	render_target = EMISSIVE_RENDER_TARGET
+
+/obj/screen/plane_master/emissive/Initialize()
+	. = ..()
+	filters += filter(type="alpha", render_source=EMISSIVE_BLOCKER_RENDER_TARGET, flags=MASK_INVERSE)
+
+/**
+  * Things placed on this always mask the lighting plane. Doesn't render directly.
+  *
+  * Always masks the light plane, isn't blocked by anything. Use for on mob glows,
+  * magic stuff, etc.
+  */
+
+/obj/screen/plane_master/emissive_unblockable
+	name = "unblockable emissive plane master"
+	plane = EMISSIVE_UNBLOCKABLE_PLANE
+	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
+	render_target = EMISSIVE_UNBLOCKABLE_RENDER_TARGET
+
+/**
+  * Things placed on this layer mask the emissive layer. Doesn't render directly
+  *
+  * You really shouldn't be directly using this, use atom helpers instead
+  */
+/obj/screen/plane_master/emissive_unblockable
+	name = "emissive mob plane master"
+	plane = EMISSIVE_BLOCKER_PLANE
+	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
+	render_target = EMISSIVE_BLOCKER_RENDER_TARGET
+
+///Contains space parallax
+
 /obj/screen/plane_master/parallax
 	name = "parallax plane master"
 	plane = PLANE_SPACE_PARALLAX