lighting fixes and optimizations (#8292)

code/modules/lighting/lighting_fake_sun_vr.dm

@@ -11,6 +11,7 @@ var/static/list/fake_sunlight_zs = list()
 	var/family = null	//Allows multipe maps that are THEORETICALLY connected to use the same settings when not in a connected Z stack
 	var/shared_settings	//Automatically set if using the family var
 	var/static/world_suns = list()	//List of all the fake_suns in the world, used for checking for family members
+	var/list/choice //CHOMPEdit
 
 	var/do_sun = TRUE
 	var/do_weather = FALSE
@@ -100,7 +101,7 @@ var/static/list/fake_sunlight_zs = list()
 
 /obj/effect/fake_sun/LateInitialize()
 	. = ..()
-	var/list/choice
+	//CHOMPEdit Removal
 	if(family)	//Allows one to make multiple fake_suns to use the same settings
 		for(var/obj/effect/fake_sun/l in world_suns)	//check all the suns that exist
 			if(l.family == family && l.shared_settings)	//do you have settings we need?

code/modules/lighting/lighting_fake_sun_zz_ch.dm

@@ -0,0 +1,35 @@
+//_zz is to change load order c:
+//Urgh, I hate lighting - Cadyn
+
+/obj/effect/fake_sun
+	var/advanced_lighting = FALSE
+
+/obj/effect/fake_sun/Initialize()
+	if(!advanced_lighting)
+		return ..()
+	do_sun = FALSE
+
+	//Copied code
+	if(family)	//Allows one to make multiple fake_suns to use the same settings
+		for(var/obj/effect/fake_sun/l in world_suns)	//check all the suns that exist
+			if(l.family == family && l.shared_settings)	//do you have settings we need?
+				choice = l.shared_settings
+				break
+	if(!choice)	//We didn't get anything from our family, let's pick something
+		choice = pick(possible_light_setups)
+		if(family)	//Let's pass our settings on to our family
+			shared_settings = choice
+	if(choice["brightness"] <= LIGHTING_SOFT_THRESHOLD) // dark!
+		return
+	//Copied code end
+
+	var/datum/simple_sun/Ssun = new()
+	Ssun.brightness = CLAMP01(choice["brightness"])
+	Ssun.color = choice["color"]
+	var/datum/planet_sunlight_handler/pshandler = new(Ssun)
+	if(z > SSlighting.z_to_pshandler.len)
+		SSlighting.z_to_pshandler.len = z
+	SSlighting.z_to_pshandler[z] = pshandler
+	SSlighting.update_sunlight(pshandler) //Queue an update for when it starts running
+
+	. = ..()

code/modules/lighting/planet_sunlight_ch.dm

@@ -20,19 +20,28 @@
 	var/cache_b_shade = 0.0
 	var/maxlum = 0.0
 	var/maxlumshade = 0.0
-	var/datum/sun_holder/sun
+	var/datum/simple_sun/sun
 	var/atom/movable/sun_vis_simple/vis_overhead
 	var/atom/movable/sun_vis_simple/vis_shade
+	var/list/shandlers = list()
 
-/datum/planet_sunlight_handler/New(var/datum/planet/planet)
+/datum/planet_sunlight_handler/New(var/planet)
 	. = ..()
-	sun = planet.sun_holder
+	var/datum/planet/P = planet
+	var/datum/simple_sun/S = planet
+	if(istype(P))
+		sun = new /datum/simple_sun/planetary(P)
+
+	if(istype(S))
+		sun = S
+
 	vis_overhead = new(null)
 	vis_shade = new(null)
 
 /datum/planet_sunlight_handler/proc/update_sun()
-	var/brightness = sun.our_brightness * SSlighting.sun_mult
-	var/list/color = hex2rgb(sun.our_color)
+	sun.update()
+	var/brightness = sun.brightness * SSlighting.sun_mult
+	var/list/color = hex2rgb(sun.color)
 	red = brightness * (color[1] / 255.0)
 	green = brightness * (color[2] / 255.0)
 	blue = brightness * (color[3] / 255.0)
@@ -86,6 +95,8 @@
 	cache_b_shade  = round(blueshade * ., LIGHTING_ROUND_VALUE)
 	#endif
 
+
+//Visuals we use to remove need to update overlays for tiles that have nothing but sunlight
 /atom/movable/sun_vis_simple
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "white"
@@ -93,3 +104,25 @@
 	mouse_opacity = 0
 	alpha = 255
 	color = "#FFFFFF"
+
+//A simplified datum for controlling the sun color/brightness
+//This allows for the sunlight system to be used outside of only planets
+/datum/simple_sun
+	var/brightness = 1.0
+	var/color = "#FFFFFF"
+
+//Called from planet_sunlight_handler.update_sun()
+//Should update brightness and color values
+/datum/simple_sun/proc/update()
+	return //Do nothing. This is meant to be overridden.
+
+/datum/simple_sun/planetary
+	var/datum/sun_holder/sun
+
+/datum/simple_sun/planetary/New(var/datum/planet/planet)
+	sun = planet.sun_holder
+
+/datum/simple_sun/planetary/update()
+	. = ..()
+	brightness = sun.our_brightness
+	color = sun.our_color

code/modules/lighting/sunlight_handler_ch.dm

@@ -16,7 +16,7 @@
 		return INITIALIZE_HINT_LATELOAD
 
 /turf/simulated/LateInitialize()
-	if((SSplanets && SSplanets.z_to_planet.len >= z && SSplanets.z_to_planet[z]) && has_dynamic_lighting()) //ONLY FOR PLANET TILES IGNORE FAKESUN TILES
+	if(((SSplanets && SSplanets.z_to_planet.len >= z && SSplanets.z_to_planet[z]) || SSlighting.get_pshandler_z(z)) && has_dynamic_lighting()) //Only for planet turfs or fakesuns that specify they want to use this system
 		if(is_outdoors())
 			var/turf/T = GetAbove(src)
 			if(T && !istype(T,/turf/simulated/open))
@@ -26,7 +26,7 @@
 			shandler.manualInit()
 
 /datum/sunlight_handler
-	var/datum/sun_holder/sun
+	var/datum/simple_sun/sun
 	var/turf/simulated/holder
 	var/datum/lighting_object/only_sun_object
 	var/effect_str_r = 0
@@ -51,13 +51,15 @@
 	for(var/datum/lighting_corner/corner in corners)
 		if(corner.sunlight == SUNLIGHT_NONE)
 			corner.sunlight = SUNLIGHT_POSSIBLE
-	if(SSplanets && SSplanets.z_to_planet.len >= holder.z && SSplanets.z_to_planet[holder.z])
-		var/datum/planet/planet = SSplanets.z_to_planet[holder.z]
-		pshandler = SSlighting.get_pshandler(planet)
-		sun = planet.sun_holder
+	if(SSlighting.get_pshandler_z(holder.z))
+		pshandler = SSlighting.get_pshandler_z(holder.z)
+		pshandler.shandlers += src
+		sun = pshandler.sun
 	sunlight_check()
 
 /datum/sunlight_handler/proc/holder_change()
+	holder.generate_missing_corners() //Somehow corners are self destructing under specific circumstances. Likely race conditions. This is slightly unoptimal but may be necessary.
+	sunlight_check() //Also not optimal but made necessary by race conditions
 	sunlight_update()
 	for(var/dir in (cardinal + cornerdirs))
 		var/turf/simulated/T = get_step(holder, dir)
@@ -188,10 +190,10 @@
 				sleepable_corners += corner.all_onlysun()
 
 	if(!sun)
-		if(SSplanets && SSplanets.z_to_planet.len >= holder.z && SSplanets.z_to_planet[holder.z])
-			var/datum/planet/planet = SSplanets.z_to_planet[holder.z]
-			sun = planet.sun_holder
-			pshandler = SSlighting.get_pshandler(planet)
+		if(SSlighting.get_pshandler_z(holder.z))
+			pshandler = SSlighting.get_pshandler_z(holder.z)
+			pshandler.shandlers += src
+			sun = pshandler.sun
 		else
 			return
 
@@ -222,6 +224,11 @@
 		only_sun_object = null
 
 	if(only_sun_object)
+		//Edge cases but needed to make sure that the correct overlay is used in the case that all corners switch from shade to overhead or vice versa between updates
+		if(only_sun_object.sunlight_only == SUNLIGHT_ONLY_SHADE && sunlight == SUNLIGHT_OVERHEAD)
+			only_sun_object.set_sunonly(SUNLIGHT_ONLY, pshandler)
+		else if(only_sun_object.sunlight_only == SUNLIGHT_ONLY && sunlight == SUNLIGHT_CURRENT)
+			only_sun_object.set_sunonly(SUNLIGHT_ONLY_SHADE, pshandler)
 		only_sun_object.update_sun()
 
 	for(var/datum/lighting_corner/corner in only_sun)
@@ -241,8 +248,8 @@
 			sunlight_mult = 0.6
 		if(SUNLIGHT_OVERHEAD)
 			sunlight_mult = 1.0
-	var/brightness = sun.our_brightness * sunlight_mult * SSlighting.sun_mult
-	var/list/color = hex2rgb(sun.our_color)
+	var/brightness = sun.brightness * sunlight_mult * SSlighting.sun_mult
+	var/list/color = hex2rgb(sun.color)
 	var/red = brightness * (color[1] / 255.0)
 	var/green = brightness * (color[2] / 255.0)
 	var/blue = brightness * (color[3] / 255.0)