Merge pull request #14793 from xxalpha/foamistransparent

Make foam transparent and cover everything including mobs.

code/game/objects/effects/effect_system/effects_foam.dm

@@ -7,7 +7,7 @@
 	opacity = 0
 	anchored = 1
 	density = 0
-	layer = OBJ_LAYER - 0.5 //above table, below windoor/airlock/foamed metal.
+	layer = MOB_LAYER + 0.5
 	mouse_opacity = 0
 	var/amount = 3
 	animate_movement = 0

code/modules/mob/living/simple_animal/bot/cleanbot.dm

@@ -4,7 +4,6 @@
 	desc = "A little cleaning robot, he looks so excited!"
 	icon = 'icons/obj/aibots.dmi'
 	icon_state = "cleanbot0"
-	layer = 5
 	density = 0
 	anchored = 0
 	health = 25

code/modules/mob/living/simple_animal/bot/ed209bot.dm

@@ -3,7 +3,6 @@
 	desc = "A security robot.  He looks less than thrilled."
 	icon = 'icons/obj/aibots.dmi'
 	icon_state = "ed2090"
-	layer = 5
 	density = 1
 	anchored = 0
 	health = 100

code/modules/mob/living/simple_animal/bot/floorbot.dm

@@ -4,7 +4,6 @@
 	desc = "A little floor repairing robot, he looks so excited!"
 	icon = 'icons/obj/aibots.dmi'
 	icon_state = "floorbot0"
-	layer = 5
 	density = 0
 	anchored = 0
 	health = 25

code/modules/mob/living/simple_animal/bot/medbot.dm

@@ -8,7 +8,6 @@
 	desc = "A little medical robot. He looks somewhat underwhelmed."
 	icon = 'icons/obj/aibots.dmi'
 	icon_state = "medibot0"
-	layer = 5
 	density = 0
 	anchored = 0
 	health = 20

code/modules/mob/living/simple_animal/bot/mulebot.dm

@@ -14,7 +14,6 @@ var/global/mulebot_count = 0
 	name = "\improper MULEbot"
 	desc = "A Multiple Utility Load Effector bot."
 	icon_state = "mulebot0"
-	layer = MOB_LAYER
 	density = 1
 	anchored = 1
 	animate_movement=1

code/modules/mob/living/simple_animal/bot/secbot.dm

@@ -3,7 +3,6 @@
 	desc = "A little security robot.  He looks less than thrilled."
 	icon = 'icons/obj/aibots.dmi'
 	icon_state = "secbot0"
-	layer = 5
 	density = 0
 	anchored = 0
 	health = 25