fix

code/controllers/configuration/entries/game_options.dm

@@ -579,3 +579,7 @@
 	max_val = 255
 	min_val = 0
 	integer = TRUE
+
+/// Dirtyness multiplier for making turfs dirty
+/datum/config_entry/number/turf_dirty_multiplier
+	config_entry_value = 1

code/controllers/subsystem/persistence/cleanable_debris.dm

@@ -34,13 +34,19 @@
 		var/sz = SSmapping.z_to_station_z_index[z]
 		z_lookup[num2text(sz)] = z
 	for(var/z in data)
+		to_chat(world, "DEBUG: looking at z [z]")
 		var/actual_z = z_lookup[z]
+		to_chat(world, "DEBUG: actual z [actual_z]")
 		var/list/L1 = data[z]
 		for(var/x in L1)
+			to_chat(world, "DEBUG: looking at x [x]")
 			var/list/L2 = data[z][x]
 			for(var/y in L2)
+				to_chat(world, "DEBUG: looking at y [y]")
 				var/turf/tile = locate(x, y, actual_z)
+				to_chat(world, "DEBUG: finding turf [x] [y] [z]: [tile]")
 				if(!tile)
+					to_chat(world, "DEBUG: aborting due to no turf")
 					continue
 				var/list/objects = data[z][x][y]
 				for(var/_L in objects)
@@ -48,13 +54,15 @@
 					var/path
 					if(islist(_L))
 						objdata = _L
-						path = objdata["__PATH__"]
+						path = text2path(objdata["__PATH__"])
 					else
-						path = _L
+						path = text2path(_L)
 						objdata = objects[_L]
-					if(!IsValidDebrisLocation(tile, allowed_turf_typecache, allowed_z_cache, path, TRUE))
-						continue
 					if(!path)
+						to_chat(world, "DEBUG: Aborting: No path")
+						continue
+					if(!IsValidDebrisLocation(tile, allowed_turf_typecache, allowed_z_cache, path, TRUE))
+						to_chat(world, "DEBUG: Aborting: Invalid location")
 						continue
 					var/obj/effect/decal/cleanable/instantiated = new path(tile)
 					if(objdata)
@@ -81,9 +89,9 @@
 			continue
 		if(stored_by_type[path] > type_max)
 			continue
-		var/text_z = num2text(saving.z)
+		var/text_z = num2text(z_lookup[num2text(saving.z)])
 		var/text_y = num2text(saving.y)
-		var/text_x = num2text(z_lookup[num2text(saving.x)])
+		var/text_x = num2text(saving.x)
 		LAZYINITLIST(data[text_z])
 		LAZYINITLIST(data[text_z][text_x])
 		LAZYINITLIST(data[text_z][text_x][text_y])

code/modules/mob/living/carbon/human/human_defines.dm

@@ -15,6 +15,7 @@
 
 	block_parry_data = /datum/block_parry_data/unarmed/human
 	default_block_parry_data = /datum/block_parry_data/unarmed/pugilist
+	causes_dirt_buildup_on_floor = TRUE
 
 	//Hair colour and style
 	var/hair_color = "000"

code/modules/mob/living/carbon/human/human_movement.dm

@@ -100,3 +100,8 @@
 	if(dna.species.space_move(src))
 		return TRUE
 	return ..()
+
+/mob/living/carbon/human/dirt_buildup(strength)
+	if(!shoes || !(shoes.body_parts_covered & FEET))
+		return	// barefoot advantage
+	return ..()

code/modules/mob/living/living_defines.dm

@@ -64,7 +64,7 @@
 	var/incorporeal_move = FALSE //FALSE is off, INCORPOREAL_MOVE_BASIC is normal, INCORPOREAL_MOVE_SHADOW is for ninjas
 								 //and INCORPOREAL_MOVE_JAUNT is blocked by holy water/salt
 	/// Do we make floors dirty as we move?
-	var/causes_dirt_buildup_on_floor = TRUE
+	var/causes_dirt_buildup_on_floor = FALSE
 
 	var/list/roundstart_quirks = list()
 

code/modules/mob/living/living_movement.dm

@@ -114,12 +114,14 @@
 	var/area/A = T.loc
 	if(!A.dirt_buildup_allowed)
 		return
+	var/multiplier = CONFIG_GET(number/turf_dirty_multiplier)
+	strength *= multiplier
 	var/obj/effect/decal/cleanable/dirt/D = locate() in T
 	if(D)
 		D.dirty(strength)
 	else
 		T.dirtyness += strength
-		if(T.dirtyness >= isnull(T.dirt_spawn_threshold)? CONFIG_GET(number/turf_dirt_threshold) : T.dirt_spawn_threshold)
+		if(T.dirtyness >= (isnull(T.dirt_spawn_threshold)? CONFIG_GET(number/turf_dirt_threshold) : T.dirt_spawn_threshold))
 			D = new /obj/effect/decal/cleanable/dirt(T)
 			D.dirty(T.dirt_spawn_threshold - T.dirtyness)
 			T.dirtyness = 0		// reset.