Ashstorms Matryoshka bugfix (#2167)

code/datums/weather/weather_types.dm

@@ -91,14 +91,21 @@
 
 	probability = 90
 
-/datum/weather/ash_storm/impact(mob/living/L)
-	if(istype(L.loc, /obj/mecha))
-		return
-	if(ishuman(L))
+/datum/weather/ash_storm/proc/is_ash_immune(mob/living/L)
+	if(istype(L.loc, /obj/mecha)) //Mechs are immune
+		return TRUE
+	if(ishuman(L)) //Are you immune?
 		var/mob/living/carbon/human/H = L
 		var/thermal_protection = H.get_thermal_protection()
 		if(thermal_protection >= FIRE_IMMUNITY_SUIT_MAX_TEMP_PROTECT)
-			return
+			return TRUE
+	if(istype(L.loc, /mob/living) && L.loc != L) //Matryoshka check
+		return is_ash_immune(L.loc)
+	return FALSE //RIP you
+
+/datum/weather/ash_storm/impact(mob/living/L)
+	if(is_ash_immune(L))
+		return
 	L.adjustFireLoss(4)
 
 /datum/weather/ash_storm/emberfall //Emberfall: An ash storm passes by, resulting in harmless embers falling like snow. 10% to happen in place of an ash storm.
@@ -215,4 +222,4 @@
 /datum/weather/acid_rain/impact(mob/living/L)
 	var/resist = L.getarmor(null, "acid")
 	if(prob(max(0,100-resist)))
-		L.acid_act(20,20)
+		L.acid_act(20,20)