Blood and tracks improvements (#5278)

-ports a fix from eris that stops people from creating tracks when walking over open spaces, and allows blood and etc to fall down if someone is bleeding while floating on an open space
-ports species based tracks from baystation, adding paw and talon-like tracks when walking barefoot
-fixes the green glow mess not going away after some time, like it should

code/game/objects/effects/decals/Cleanable/humans.dm

@@ -41,6 +41,7 @@
 
 /obj/effect/decal/cleanable/blood/Initialize(mapload)
 	. = ..()
+	fall_to_floor()
 	update_icon()
 	if(istype(src, /obj/effect/decal/cleanable/blood/gibs))
 		return
@@ -230,6 +231,14 @@
 
 		if (step_to(src, get_step(src, direction), 0))
 			break
+/obj/effect/decal/cleanable/blood/proc/fall_to_floor()
+	if (isopenturf(loc))
+		anchored = FALSE
+		ADD_FALLING_ATOM(src)
+
+/obj/effect/decal/cleanable/blood/fall_impact()
+	. = ..()
+	anchored = initial(anchored)
 
 /obj/effect/decal/cleanable/mucus
 	name = "mucus"

code/game/objects/effects/decals/Cleanable/misc.dm

@@ -60,7 +60,7 @@
 
 /obj/effect/decal/cleanable/greenglow/Initialize(mapload)
 	. = ..()
-	if (!ROUND_IS_STARTED)	// Round-start goo should stick around.
+	if (!mapload)	// Round-start goo should stick around.
 		QDEL_IN(src, 2 MINUTES)
 
 /obj/effect/decal/cleanable/cobweb
@@ -103,10 +103,10 @@
 	random_icon_states = list("vomit_1", "vomit_2", "vomit_3", "vomit_4")
 	var/list/viruses = list()
 
-	Destroy()
-		for(var/datum/disease/D in viruses)
-			D.cure(0)
-		return ..()
+/obj/effect/decal/cleanable/vomit/Destroy()
+	for(var/datum/disease/D in viruses)
+		D.cure(0)
+	return ..()
 
 /obj/effect/decal/cleanable/tomato_smudge
 	name = "tomato smudge"

code/game/objects/effects/decals/Cleanable/tracks.dm

@@ -151,8 +151,8 @@
 /obj/effect/decal/cleanable/blood/tracks/footprints
 	name = "wet footprints"
 	dryname = "dried footprints"
-	desc = "Whoops..."
-	drydesc = "Whoops..."
+	desc = "They look like still wet tracks left by footwear."
+	drydesc = "They look like dried tracks left by footwear."
 	coming_state = "human1"
 	going_state  = "human2"
 	amount = 0
@@ -160,11 +160,30 @@
 /obj/effect/decal/cleanable/blood/tracks/wheels
 	name = "wet tracks"
 	dryname = "dried tracks"
-	desc = "Whoops..."
-	drydesc = "Whoops..."
+	desc = "They look like still wet tracks left by wheels."
+	drydesc = "They look like dried tracks left by wheels."
 	coming_state = "wheels"
 	going_state  = ""
-	desc = "They look like tracks left by wheels."
 	gender = PLURAL
 	random_icon_states = null
 	amount = 0
+
+/obj/effect/decal/cleanable/blood/tracks/paw
+	name = "wet tracks"
+	dryname = "dried tracks"
+	desc = "They look like still wet tracks left by paws."
+	drydesc = "They look like dried tracks left by paws."
+	coming_state = "paw1"
+	going_state  = "paw2"
+	random_icon_states = null
+	amount = 0
+
+/obj/effect/decal/cleanable/blood/tracks/claw
+	name = "wet tracks"
+	dryname = "dried tracks"
+	desc = "They look like still wet tracks left by claws."
+	drydesc = "They look like dried tracks left by claws."
+	coming_state = "claw1"
+	going_state  = "claw2"
+	random_icon_states = null
+	amount = 0