add snow tiles movements

data/movements/scripts/misc/snow.lua

@@ -0,0 +1,14 @@
+function onStepOut(creature, item, position, fromPosition)
+	local player = creature:getPlayer()
+	if player and player:isInGhostMode() then
+		return true
+	end
+
+	if item.itemid == 799 then
+		item:transform(6594)
+	else
+		item:transform(item.itemid + 15)
+	end
+	item:decay()
+	return true
+end