Fixes luminosity checks

They should now be more in-line with how they worked under the old
lighting system.

code/modules/hydroponics/seed.dm

@@ -281,7 +281,7 @@
 	if(!light_supplied)
 		var/atom/movable/lighting_overlay/L = locate(/atom/movable/lighting_overlay) in current_turf
 		if(L)
-			light_supplied = max(0,min(10,L.lum_r + L.lum_g + L.lum_b)-5)
+			light_supplied = L.get_clamped_lum()*10
 		else
 			light_supplied =  5
 

code/modules/hydroponics/trays/tray.dm

@@ -810,7 +810,7 @@
 			var/atom/movable/lighting_overlay/L = locate(/atom/movable/lighting_overlay) in T
 			var/light_available
 			if(L)
-				light_available = max(0,min(10,L.lum_r + L.lum_g + L.lum_b))
+				light_available = L.get_clamped_lum()*10
 			else
 				light_available =  5
 			light_string = "a light level of [light_available] lumens"

code/modules/lighting/lighting_overlay.dm

@@ -25,6 +25,15 @@
 	. = ..()
 	verbs.Cut()
 
+/atom/movable/lighting_overlay/proc/get_clamped_lum(var/minlum = 0, var/maxlum = 1)
+	var/lum = max(lum_r, lum_g, lum_b)
+	if(lum <= minlum)
+		return 0
+	else if(lum >= maxlum)
+		return 1
+	else
+		return (lum - minlum) / (maxlum - minlum)
+
 /atom/movable/lighting_overlay/proc/update_lumcount(delta_r, delta_g, delta_b)
 	lum_r += delta_r
 	lum_g += delta_g

code/modules/mob/living/carbon/human/life.dm

@@ -746,7 +746,7 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 				var/turf/T = loc
 				var/atom/movable/lighting_overlay/L = locate(/atom/movable/lighting_overlay) in T
 				if(L)
-					light_amount = min(10,L.lum_r + L.lum_g + L.lum_b) - 5 //hardcapped so it's not abused by having a ton of flashlights
+					light_amount = (L.get_clamped_lum()*10) - 5 //hardcapped so it's not abused by having a ton of flashlights
 				else
 					light_amount =  5
 			nutrition += light_amount
@@ -768,7 +768,7 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 				var/turf/T = loc
 				var/atom/movable/lighting_overlay/L = locate(/atom/movable/lighting_overlay) in T
 				if(L)
-					light_amount = L.lum_r + L.lum_g + L.lum_b //hardcapped so it's not abused by having a ton of flashlights
+					light_amount = L.get_clamped_lum()*10
 				else
 					light_amount =  10
 			if(light_amount > species.light_dam) //if there's enough light, start dying

code/modules/mob/living/carbon/monkey/life.dm

@@ -442,7 +442,7 @@
 				var/turf/T = loc
 				var/atom/movable/lighting_overlay/L = locate(/atom/movable/lighting_overlay) in T
 				if(L)
-					light_amount = min(10,L.lum_r + L.lum_g + L.lum_b) - 5 //hardcapped so it's not abused by having a ton of flashlights
+					light_amount = (L.get_clamped_lum()*10) - 5 //hardcapped so it's not abused by having a ton of flashlights
 				else
 					light_amount =  5
 
@@ -672,4 +672,4 @@
 	proc/handle_wetness()
 		if(mob_master.current_cycle%20==2) //dry off a bit once every 20 ticks or so
 			wetlevel = max(wetlevel - 1,0)
-		return
+		return

code/modules/mob/living/simple_animal/hostile/statue.dm

@@ -116,19 +116,19 @@
 	var/DLlight_amount
 	var/atom/movable/lighting_overlay/L = locate(/atom/movable/lighting_overlay) in T
 	if(L)
-		light_amount = min(10,L.lum_r + L.lum_g + L.lum_b) - 5 //hardcapped so it's not abused by having a ton of flashlights
+		light_amount = L.lum_r + L.lum_g + L.lum_b
 	else
 		light_amount =  5
 	var/atom/movable/lighting_overlay/DL = locate(/atom/movable/lighting_overlay) in destination
 	if(DL)
-		DLlight_amount = min(10,L.lum_r + L.lum_g + L.lum_b) - 5 //hardcapped so it's not abused by having a ton of flashlights
+		DLlight_amount = L.lum_r + L.lum_g + L.lum_b
 	else
 		DLlight_amount =  5
 	if(T && destination)
 		// Don't check it twice if our destination is the tile we are on or we can't even get to our destination
 		if(T == destination)
 			destination = null
-		else if(light_amount <= 1 && DLlight_amount <= 1) // No one can see us in the darkness, right?
+		else if(light_amount < 0.1 && DLlight_amount < 0.1) // No one can see us in the darkness, right?
 			return null
 
 	// We aren't in darkness, loop for viewers.