Layers are now defines (#17949)

* Layers are now defines

* this looks better

* GAS_phil_LAYER

* no message

* remove the three unneeded defines

* no message

code/modules/events/anomaly_bluespace.dm

@@ -65,7 +65,7 @@
 								blueeffect.screen_loc = "WEST,SOUTH to EAST,NORTH"
 								blueeffect.icon = 'icons/effects/effects.dmi'
 								blueeffect.icon_state = "shieldsparkles"
-								blueeffect.layer = 17
+								blueeffect.layer = FLASH_LAYER
 								blueeffect.mouse_opacity = 0
 								M.client.screen += blueeffect
 								sleep(20)

code/modules/events/spacevine.dm

@@ -327,8 +327,7 @@
 
 /datum/spacevine_mutation/flowering/on_grow(obj/effect/spacevine/holder)
 	if(holder.energy == 2 && prob(severity) && !locate(/obj/structure/alien/resin/flower_bud_enemy) in range(5,holder))
-		var/obj/structure/alien/resin/flower_bud_enemy/FBE = new /obj/structure/alien/resin/flower_bud_enemy (get_turf(holder))
-		FBE.layer = holder.layer+0.1
+		new/obj/structure/alien/resin/flower_bud_enemy(get_turf(holder))
 
 
 /datum/spacevine_mutation/flowering/on_cross(obj/effect/spacevine/holder, mob/living/crosser)
@@ -344,7 +343,7 @@
 	icon_state = "Light1"
 	anchored = 1
 	density = 0
-	layer = MOB_LAYER + 0.8
+	layer = SPACEVINE_LAYER
 	mouse_opacity = 2 //Clicking anywhere on the turf is good enough
 	pass_flags = PASSTABLE | PASSGRILLE
 	var/energy = 0
@@ -532,7 +531,6 @@
 		src.icon_state = pick("Med1", "Med2", "Med3")
 		energy = 1
 		SetOpacity(1)
-		layer = 5
 	else
 		src.icon_state = pick("Hvy1", "Hvy2", "Hvy3")
 		energy = 2