some tweaks to mice and roaches, tried to get the gameticker to periodically spawn them but failed (will come back to)

Signed-off-by: Cael_Aislinn <cael_aislinn@yahoo.com.au>

code/modules/critters/critters.dm

@@ -167,8 +167,12 @@
 
 	Die()
 		..()
+		new /obj/effect/decal/cleanable/mucus(src.loc)
 		del(src)
 
+/proc/isroach(var/obj/O)
+	return istype(O,/obj/effect/critter/roach)
+
 // We can maybe make these controllable via some console or something
 /obj/effect/critter/manhack
 	name = "viscerator"

code/modules/mob/simple_animal/mouse.dm

@@ -1,13 +1,13 @@
 /mob/living/simple_animal/mouse
 	name = "mouse"
-	desc = "It's a nasty, ugly, evil, disease-ridden rodent."
+	desc = "It's a small, disease-ridden rodent."
 	icon_state = "mouse_gray"
 	icon_living = "mouse_gray"
 	icon_dead = "mouse_gray_dead"
 	speak = list("Squeek!","SQUEEK!","Squeek?")
 	speak_emote = list("squeeks")
 	emote_hear = list("squeeks")
-	emote_see = list("runs in a circle", "shakes")
+	emote_see = list("runs in a circle", "shakes", "scritches at something")
 	speak_chance = 1
 	turns_per_move = 5
 	see_in_dark = 6
@@ -17,7 +17,7 @@
 	response_disarm = "gently pushes aside the"
 	response_harm   = "splats the"
 	density = 0
-	var/color //brown, gray and white, leave blank for random
+	var/color = "gray" //brown, gray and white
 
 /mob/living/simple_animal/mouse/Life()
 	..()
@@ -30,10 +30,6 @@
 	color = "white"
 	icon_state = "mouse_white"
 
-/mob/living/simple_animal/mouse/gray
-	color = "gray"
-	icon_state = "mouse_gray"
-
 /mob/living/simple_animal/mouse/brown
 	color = "brown"
 	icon_state = "mouse_brown"
@@ -44,9 +40,13 @@
 	icon_state = "mouse_[color]"
 	icon_living = "mouse_[color]"
 	icon_dead = "mouse_[color]_dead"
+	desc = "It's a small, [color], disease-ridden rodent."
 
 /mob/living/simple_animal/mouse/proc/splat()
 	src.health = 0
 	src.stat = DEAD
 	src.icon_dead = "mouse_[color]_splat"
 	src.icon_state = "mouse_[color]_splat"
+
+/proc/ismouse(var/obj/O)
+	return istype(O,/mob/living/simple_animal/mouse)