Rearange on replace code to be more general purpous

mods/ENTITIES/mcl_mobs/init.lua

@@ -217,6 +217,7 @@ function mcl_mobs.register_mob(name, def)
 		replace_with = def.replace_with,
 		replace_offset = def.replace_offset or 0,
 		on_replace = def.on_replace,
+		replace_delay = def.replace_delay or 0,
 		timer = 0,
 		env_damage_timer = 0,
 		tamed = false,

mods/ENTITIES/mcl_mobs/movement.lua

@@ -513,27 +513,18 @@ function mob_class:replace_node(pos)
 
 		local oldnode = {name = what, param2 = node.param2}
 		local newnode = {name = with, param2 = node.param2}
-		local on_replace_return = true
+		local on_replace_return = false
+		if self.on_replace then
+			on_replace_return = self.on_replace(self, pos, oldnode, newnode)
+		end
 
 
 		if on_replace_return ~= false then
 
 			if mobs_griefing then
-				self.state = "eat"
-				self:set_animation("eat")
-				self:set_velocity(0)
-				minetest.after(1.3, function()
-					if self and self.object and not self.dead then
-						self.object:set_velocity(vector.new(0,0,0))
+				minetest.after(self.replace_delay, function()
+					if self and self.object and self.object:get_velocity() and self.health > 0 then
 						minetest.set_node(pos, newnode)
-						if self.on_replace then
-							on_replace_return = self.on_replace(self, pos, oldnode, newnode)
-						end
-					end
-				end)
-				minetest.after(2.5, function()
-					if self and self.object and self.state == 'eat' and not self.dead then
-						self.state = "walk"
 					end
 				end)
 			end

mods/ENTITIES/mobs_mc/sheep.lua

@@ -113,13 +113,20 @@ mcl_mobs.register_mob("mobs_mc:sheep", {
 	view_range = 12,
 
 	-- Eat grass
-	replace_rate = 40,
+	replace_rate = 1,
+	replace_delay = 1.3,
 	replace_what = {
 		{ "mcl_core:dirt_with_grass", "mcl_core:dirt", -1 },
 		{ "mcl_flowers:tallgrass", "air", 0 },
 	},
 	-- Properly regrow wool after eating grass
 	on_replace = function(self, pos, oldnode, newnode)
+		self.state = "eat"
+		self:set_animation("eat")
+		self:set_velocity(0)
+		minetest.after(self.replace_delay, function()
+			self.object:set_velocity(vector.zero())
+			if self and self.object and not self.object:get_velocity() and self.health > 0 then
 				if not self.color or not colors[self.color] then
 					self.color = "unicolor_white"
 				end
@@ -136,6 +143,13 @@ mcl_mobs.register_mob("mobs_mc:sheep", {
 					min = 1,
 					max = 1,},
 				}
+			end
+		end)
+		minetest.after(2.5, function()
+			if self and self.object and self.state == 'eat' and self.health > 0 and self.object:get_velocity()  then
+				self.state = "walk"
+			end
+		end)
 	end,
 
 	-- Set random color on spawn