set_luminosity helper

code/game/turfs/turf.dm

@@ -40,7 +40,7 @@
 		Entered(AM)
 
 	//Lighting related
-	luminosity = !(dynamic_lighting)
+	set_luminosity(!(dynamic_lighting))
 	
 	if(opacity)
 		directional_opacity = ALL_CARDINALS

code/modules/lighting/lighting_overlay.dm

@@ -26,7 +26,7 @@
 		stack_trace("a lighting object was assigned to a turf that already had a lighting object!")
 
 	affected_turf.lighting_object = src
-	affected_turf.luminosity = 0
+	affected_turf.set_luminosity(0)
 
 	for(var/turf/space/space_tile in RANGE_TURFS(1, affected_turf))
 		space_tile.update_starlight()
@@ -40,7 +40,7 @@
 	SSlighting.objects_queue -= src
 	if (isturf(affected_turf))
 		affected_turf.lighting_object = null
-		affected_turf.luminosity = 1
+		affected_turf.set_luminosity(1)
 		affected_turf.underlays -= current_underlay
 	affected_turf = null
 	return ..()
@@ -112,7 +112,7 @@
 
 		affected_turf.underlays += current_underlay
 
-	affected_turf.luminosity = set_luminosity
+	affected_turf.set_luminosity(set_luminosity)
 
 /datum/lighting_object/proc/removefromturf()
 	affected_turf.underlays -= current_underlay

code/modules/lighting/lighting_turf.dm

@@ -93,6 +93,13 @@
 		return
 	recalculate_directional_opacity()
 
+///Setter for the byond luminosity var
+/turf/proc/set_luminosity(new_luminosity, force)
+	// SSplanets handles outdoor turfs
+	if(outdoors && !force)
+		return
+	
+	luminosity = new_luminosity
 
 ///Calculate on which directions this turfs block view.
 /turf/proc/recalculate_directional_opacity()

code/modules/planet/sun.dm

@@ -39,6 +39,7 @@
 		return
 	T.vis_contents += sun
 	T.dynamic_lumcount += our_brightness
+	T.set_luminosity(1, TRUE)
 
 /datum/sun_holder/proc/remove_from_turf(turf/T)
 	if(!(sun in T.vis_contents))
@@ -46,6 +47,7 @@
 		return
 	T.vis_contents -= sun
 	T.dynamic_lumcount -= our_brightness
+	T.set_luminosity(!IS_DYNAMIC_LIGHTING(T), TRUE)
 
 /datum/sun_holder/proc/rainbow()
 	var/end = world.time + 30 SECONDS