[MIRROR] starlight optimization (#11130)

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/__defines/lighting.dm

@@ -60,8 +60,6 @@
 #define DYNAMIC_LIGHTING_ENABLED 1
 /// dynamic lighting enabled even if the area doesn't require power
 #define DYNAMIC_LIGHTING_FORCED 2
-/// dynamic lighting enabled only if starlight is.
-#define DYNAMIC_LIGHTING_IFSTARLIGHT 3
 #define IS_DYNAMIC_LIGHTING(A) A.dynamic_lighting
 
 

code/controllers/configuration/entries/general.dm

@@ -581,7 +581,8 @@
 /datum/config_entry/flag/allow_url_links
 	default = TRUE // honestly if I were you i'd leave this one off, only use in dire situations
 
-/datum/config_entry/flag/starlight // Whether space turfs have ambient light or not
+/datum/config_entry/number/starlight // Whether space turfs have ambient light or not and how strong it is.
+	default = 0
 
 // FIXME: Unused
 ///datum/config_entry/str_list/ert_species

code/controllers/subsystems/lighting.dm

@@ -20,11 +20,6 @@ SUBSYSTEM_DEF(lighting)
 
 /datum/controller/subsystem/lighting/Initialize()
 	if(!subsystem_initialized)
-		if (CONFIG_GET(flag/starlight))
-			for(var/area/A in world)
-				if (A.dynamic_lighting == DYNAMIC_LIGHTING_IFSTARLIGHT)
-					A.luminosity = 0
-
 		subsystem_initialized = TRUE
 		create_all_lighting_objects()
 

code/game/turfs/space/space.dm

@@ -13,7 +13,7 @@
 	var/forced_dirs = 0 //Force this one to pretend it's an overedge turf
 
 /turf/space/Initialize(mapload)
-	if(CONFIG_GET(flag/starlight))
+	if(CONFIG_GET(number/starlight))
 		update_starlight()
 
 	//Sprite stuff only beyond here
@@ -75,7 +75,7 @@
 
 /turf/space/proc/update_starlight()
 	if(locate(/turf/simulated) in orange(src,1))
-		set_light(CONFIG_GET(flag/starlight))
+		set_light(CONFIG_GET(number/starlight))
 	else
 		set_light(0)
 

code/game/turfs/turf_changing.dm

@@ -100,6 +100,7 @@
 	if(SSair)
 		SSair.mark_for_update(W)
 
+	if(CONFIG_GET(number/starlight))
 		for(var/turf/space/S in range(W, 1))
 			S.update_starlight()
 	W.levelupdate()
@@ -130,6 +131,7 @@
 		else if(lighting_object && !lighting_object.needs_update)
 			lighting_object.update()
 
+		if(CONFIG_GET(number/starlight))
 			for(var/turf/space/space_tile in RANGE_TURFS(1, src))
 				space_tile.update_starlight()
 

code/modules/lighting/lighting_overlay.dm

@@ -30,7 +30,7 @@
 	affected_turf.lighting_object = src
 	affected_turf.set_luminosity(0)
 
-	if(CONFIG_GET(flag/starlight))
+	if(CONFIG_GET(number/starlight))
 		for(var/turf/space/space_tile in RANGE_TURFS(1, affected_turf))
 			space_tile.update_starlight()