add on_replace functions to cow and sheep to replace milk and wool when eating

sheep.lua

@@ -65,25 +65,40 @@ stepheight = 0.6,
 			walk_start = 81,
 			walk_end = 100,
 		},
-		follow = {"farming:wheat", "default:grass_5"},
+		follow = {"farming:wheat", "default:grass_1"},
 		view_range = 8,
 		replace_rate = 10,
-		replace_what = {"default:grass_3", "default:grass_4", "default:grass_5", "farming:wheat_8"},
-		replace_with = "air",
-		replace_offset = -1,
+		replace_what = {
+			{"group:grass", "air", -1},
+			{"default:dirt_with_grass", "default:dirt", -2}
+		},
 		fear_height = 3,
---[[
 		on_replace = function(self, pos, oldnode, newnode)
-			print ("---- replaced") ; return false -- false to keep node, true to replace
+
+			self.food = (self.food or 0) + 1
+
+			-- if sheep replaces 8x grass then it regrows wool
+			if self.food >= 8 then
+
+				self.food = 0
+				self.gotten = false
+
+				self.object:set_properties({
+					textures = {"mobs_sheep_base.png^(mobs_sheep_wool.png^[colorize:" .. col[3] .. ")"},
+					mesh = "mobs_sheep.b3d",
+				})
+			end
 		end,
-]]
 		on_rightclick = function(self, clicker)
 
 			--are we feeding?
 			if mobs:feed_tame(self, clicker, 8, true, true) then
 
-				--if full grow fuzz
-				if self.gotten == false then
+				--if fed 7x grass or wheat then sheep regrows wool
+				if self.food > 6 then
+
+					self.food = 0
+					self.gotten = false
 
 					self.object:set_properties({
 						textures = {"mobs_sheep_base.png^(mobs_sheep_wool.png^[colorize:" .. col[3] .. ")"},