diff --git a/bee.lua b/bee.lua
index 176f07b..c0505ce 100644
--- a/bee.lua
+++ b/bee.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Bee by KrupnoPavel (.b3d model by sirrobzeroone)
 
@@ -68,10 +68,10 @@ mobs:alias_mob("mobs:bee", "mobs_animal:bee")
 
 -- honey
 
-minetest.register_craftitem(":mobs:honey", {
+core.register_craftitem(":mobs:honey", {
 	description = S("Honey"),
 	inventory_image = "mobs_honey_inv.png",
-	on_use = minetest.item_eat(4),
+	on_use = core.item_eat(4),
 	groups = {food_honey = 1, food_sugar = 1}
 })
 
@@ -79,7 +79,7 @@ mobs.add_eatable("mobs:honey", 4)
 
 -- beehive (1 in 4 chance of spawning bee when placed)
 
-minetest.register_node(":mobs:beehive", {
+core.register_node(":mobs:beehive", {
 	description = S("Beehive"),
 	drawtype = "plantlike",
 	tiles = {"mobs_beehive.png"},
@@ -93,7 +93,7 @@ minetest.register_node(":mobs:beehive", {
 
 	on_construct = function(pos)
 
-		local meta = minetest.get_meta(pos)
+		local meta = core.get_meta(pos)
 		local gui_bg = default and default.gui_bg .. default.gui_bg_img .. default.gui_slots or ""
 
 		meta:set_string("formspec", "size[8,6]"
@@ -110,10 +110,10 @@ minetest.register_node(":mobs:beehive", {
 
 		if placer and placer:is_player() then
 
-			minetest.set_node(pos, {name = "mobs:beehive", param2 = 1})
+			core.set_node(pos, {name = "mobs:beehive", param2 = 1})
 
 			if math.random(4) == 1 then
-				minetest.add_entity(pos, "mobs_animal:bee")
+				core.add_entity(pos, "mobs_animal:bee")
 			end
 		end
 	end,
@@ -121,7 +121,7 @@ minetest.register_node(":mobs:beehive", {
 	on_punch = function(pos, node, puncher)
 
 		-- yep, bee's don't like having their home punched by players
-		minetest.after(0.2, function()
+		core.after(0.2, function()
 
 			local hp = puncher and puncher:get_hp()
 
@@ -138,7 +138,7 @@ minetest.register_node(":mobs:beehive", {
 
 	can_dig = function(pos,player) -- can only dig when no honey inside
 
-		local meta = minetest.get_meta(pos)
+		local meta = core.get_meta(pos)
 
 		return meta:get_inventory():is_empty("beehive")
 	end
@@ -146,14 +146,14 @@ minetest.register_node(":mobs:beehive", {
 
 -- beehive recipe
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:beehive",
 	recipe = {{"mobs:bee","mobs:bee","mobs:bee"}}
 })
 
 -- honey block and craft recipes
 
-minetest.register_node(":mobs:honey_block", {
+core.register_node(":mobs:honey_block", {
 	description = S("Honey Block"),
 	tiles = {"mobs_honey_block.png"},
 	groups = {snappy = 3, flammable = 2},
@@ -161,7 +161,7 @@ minetest.register_node(":mobs:honey_block", {
 	sounds = mobs.node_sound_dirt_defaults()
 })
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:honey_block",
 	recipe = {
 		{"mobs:honey", "mobs:honey", "mobs:honey"},
@@ -170,7 +170,7 @@ minetest.register_craft({
 	}
 })
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:honey 9",
 	recipe = {
 		{"mobs:honey_block"}
@@ -179,7 +179,7 @@ minetest.register_craft({
 
 -- beehive workings
 
-minetest.register_abm({
+core.register_abm({
 	nodenames = {"mobs:beehive"},
 	interval = 12,
 	chance = 6,
@@ -188,18 +188,18 @@ minetest.register_abm({
 	action = function(pos, node)
 
 		-- bee's only make honey during the day
-		local tod = (minetest.get_timeofday() or 0) * 24000
+		local tod = (core.get_timeofday() or 0) * 24000
 
 		if tod < 5500 or tod > 18500 then return end
 
-		local meta = minetest.get_meta(pos) ; if not meta then return end
+		local meta = core.get_meta(pos) ; if not meta then return end
 		local inv = meta:get_inventory()
 		local honey = inv:get_stack("beehive", 1):get_count()
 
 		if honey > 11 then return end -- return if hive full
 
 		-- no flowers no honey, nuff said!
-		if #minetest.find_nodes_in_area_under_air(
+		if #core.find_nodes_in_area_under_air(
 				{x = pos.x - 4, y = pos.y - 3, z = pos.z - 4},
 				{x = pos.x + 4, y = pos.y + 3, z = pos.z + 4}, "group:flower") > 3 then
 
diff --git a/bunny.lua b/bunny.lua
index 1f66c65..1d13820 100644
--- a/bunny.lua
+++ b/bunny.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Bunny by ExeterDad
 
@@ -69,7 +69,7 @@ mobs:register_mob("mobs_animal:bunny", {
 			end
 
 			-- set special bunny attributes
-			local staticdata = minetest.serialize({
+			local staticdata = core.serialize({
 				type = "monster",
 				attack_type = "dogfight",
 				health = 20,
@@ -84,7 +84,7 @@ mobs:register_mob("mobs_animal:bunny", {
 			})
 
 			-- add evil bunny
-			local obj = minetest.add_entity(
+			local obj = core.add_entity(
 					self.object:get_pos(), "mobs_animal:bunny", staticdata)
 
 			obj:set_properties({textures = {"mobs_bunny_evil.png"}, hp_max = 20})
@@ -99,19 +99,19 @@ mobs:register_mob("mobs_animal:bunny", {
 		local pos = self.object:get_pos() ; pos.y = pos.y - 1
 
 		-- white snowy bunny
-		if minetest.find_node_near(pos, 1,
+		if core.find_node_near(pos, 1,
 				{"default:snow", "default:snowblock", "default:dirt_with_snow"}) then
 			self.base_texture = {"mobs_bunny_white.png"}
 			self.object:set_properties({textures = self.base_texture})
 
 		-- brown desert bunny
-		elseif minetest.find_node_near(pos, 1,
+		elseif core.find_node_near(pos, 1,
 				{"default:desert_sand", "default:desert_stone"}) then
 			self.base_texture = {"mobs_bunny_brown.png"}
 			self.object:set_properties({textures = self.base_texture})
 
 		-- grey stone bunny
-		elseif minetest.find_node_near(pos, 1,
+		elseif core.find_node_near(pos, 1,
 				{"default:stone", "default:gravel"}) then
 			self.base_texture = {"mobs_bunny_grey.png"}
 			self.object:set_properties({textures = self.base_texture})
@@ -127,7 +127,7 @@ if not mobs.custom_spawn_animal then
 
 	local spawn_on = "default:dirt_with_grass"
 
-	if minetest.get_modpath("ethereal") then
+	if core.get_modpath("ethereal") then
 		spawn_on = "ethereal:prairie_dirt"
 	end
 
@@ -154,10 +154,10 @@ mobs:alias_mob("mobs:bunny", "mobs_animal:bunny")
 
 -- raw rabbit
 
-minetest.register_craftitem(":mobs:rabbit_raw", {
+core.register_craftitem(":mobs:rabbit_raw", {
 	description = S("Raw Rabbit"),
 	inventory_image = "mobs_rabbit_raw.png",
-	on_use = minetest.item_eat(3),
+	on_use = core.item_eat(3),
 	groups = {food_meat_raw = 1, food_rabbit_raw = 1}
 })
 
@@ -165,16 +165,16 @@ mobs.add_eatable("mobs:rabbit_raw", 3)
 
 -- cooked rabbit
 
-minetest.register_craftitem(":mobs:rabbit_cooked", {
+core.register_craftitem(":mobs:rabbit_cooked", {
 	description = S("Cooked Rabbit"),
 	inventory_image = "mobs_rabbit_cooked.png",
-	on_use = minetest.item_eat(5),
+	on_use = core.item_eat(5),
 	groups = {food_meat = 1, food_rabbit = 1}
 })
 
 mobs.add_eatable("mobs:rabbit_cooked", 5)
 
-minetest.register_craft({
+core.register_craft({
 	type = "cooking",
 	output = "mobs:rabbit_cooked",
 	recipe = "mobs:rabbit_raw",
@@ -183,15 +183,15 @@ minetest.register_craft({
 
 -- rabbit hide and recipes
 
-minetest.register_craftitem(":mobs:rabbit_hide", {
+core.register_craftitem(":mobs:rabbit_hide", {
 	description = S("Rabbit Hide"),
 	inventory_image = "mobs_rabbit_hide.png",
 	groups = {flammable = 2, pelt = 1}
 })
 
-minetest.register_craft({type = "fuel", recipe = "mobs:rabbit_hide", burntime = 2})
+core.register_craft({type = "fuel", recipe = "mobs:rabbit_hide", burntime = 2})
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:leather",
 	recipe = {
 		{"mobs:rabbit_hide", "mobs:rabbit_hide"},
diff --git a/chicken.lua b/chicken.lua
index c416e20..4da99c8 100644
--- a/chicken.lua
+++ b/chicken.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Chicken by JK Murray and Sirrobzeroone
 
@@ -84,13 +84,13 @@ mobs:register_mob("mobs_animal:chicken", {
 
 		if math.random(100) == 1 then
 
-			minetest.add_item(pos, "mobs:egg")
+			core.add_item(pos, "mobs:egg")
 
-			minetest.sound_play("default_place_node_hard",
+			core.sound_play("default_place_node_hard",
 					{pos = pos, gain = 1.0, max_hear_distance = 5}, true)
 
 		elseif math.random(100) < 3 then
-			minetest.add_item(pos, "mobs:chicken_feather")
+			core.add_item(pos, "mobs:chicken_feather")
 		end
 	end
 })
@@ -101,7 +101,7 @@ if not mobs.custom_spawn_animal then
 
 	local spawn_on = {"default:dirt_with_grass"}
 
-	if minetest.get_modpath("ethereal") then
+	if core.get_modpath("ethereal") then
 		spawn_on = {"ethereal:bamboo_dirt", "ethereal:prairie_dirt"}
 	end
 
@@ -136,7 +136,7 @@ mobs:register_arrow("mobs_animal:egg_entity", {
 
 	hit_player = function(self, player)
 
-		player:punch(minetest.get_player_by_name(self.playername) or self.object, 1.0, {
+		player:punch(core.get_player_by_name(self.playername) or self.object, 1.0, {
 			full_punch_interval = 1.0,
 			damage_groups = {fleshy = 1}
 		}, nil)
@@ -156,10 +156,10 @@ mobs:register_arrow("mobs_animal:egg_entity", {
 
 		pos.y = pos.y + 1
 
-		local nod = minetest.get_node_or_nil(pos)
+		local nod = core.get_node_or_nil(pos)
 
-		if not nod or not minetest.registered_nodes[nod.name]
-		or minetest.registered_nodes[nod.name].walkable == true then
+		if not nod or not core.registered_nodes[nod.name]
+		or core.registered_nodes[nod.name].walkable == true then
 			return
 		end
 
@@ -182,10 +182,10 @@ local mobs_shoot_egg = function (item, player, pointed_thing)
 
 	local playerpos = player:get_pos()
 
-	minetest.sound_play("default_place_node_hard", 
+	core.sound_play("default_place_node_hard", 
 			{pos = playerpos, gain = 1.0, max_hear_distance = 5}, true)
 
-	local obj = minetest.add_entity({
+	local obj = core.add_entity({
 		x = playerpos.x,
 		y = playerpos.y +1.5,
 		z = playerpos.z
@@ -216,7 +216,7 @@ end
 
 -- egg
 
-minetest.register_node(":mobs:egg", {
+core.register_node(":mobs:egg", {
 	description = S("Chicken Egg"),
 	tiles = {"mobs_chicken_egg.png"},
 	inventory_image  = "mobs_chicken_egg.png",
@@ -235,7 +235,7 @@ minetest.register_node(":mobs:egg", {
 	sounds = mobs.node_sound_defaults(),
 
 	after_place_node = function(pos, placer, itemstack)
-		minetest.set_node(pos, {name = "mobs:egg", param2 = 1})
+		core.set_node(pos, {name = "mobs:egg", param2 = 1})
 	end,
 
 	on_use = mobs_shoot_egg
@@ -243,16 +243,16 @@ minetest.register_node(":mobs:egg", {
 
 -- fried egg and recipe
 
-minetest.register_craftitem(":mobs:chicken_egg_fried", {
+core.register_craftitem(":mobs:chicken_egg_fried", {
 	description = S("Fried Egg"),
 	inventory_image = "mobs_chicken_egg_fried.png",
-	on_use = minetest.item_eat(2),
+	on_use = core.item_eat(2),
 	groups = {food_egg_fried = 1}
 })
 
 mobs.add_eatable("mobs:chicken_egg_fried", 2)
 
-minetest.register_craft({
+core.register_craft({
 	type  =  "cooking",
 	recipe  = "mobs:egg",
 	output = "mobs:chicken_egg_fried"
@@ -260,10 +260,10 @@ minetest.register_craft({
 
 -- raw chicken
 
-minetest.register_craftitem(":mobs:chicken_raw", {
+core.register_craftitem(":mobs:chicken_raw", {
 	description = S("Raw Chicken"),
 	inventory_image = "mobs_chicken_raw.png",
-	on_use = minetest.item_eat(2),
+	on_use = core.item_eat(2),
 	groups = {food_meat_raw = 1, food_chicken_raw = 1}
 })
 
@@ -271,16 +271,16 @@ mobs.add_eatable("mobs:chicken_raw", 2)
 
 -- cooked chicken and recipe
 
-minetest.register_craftitem(":mobs:chicken_cooked", {
+core.register_craftitem(":mobs:chicken_cooked", {
 	description = S("Cooked Chicken"),
 	inventory_image = "mobs_chicken_cooked.png",
-	on_use = minetest.item_eat(6),
+	on_use = core.item_eat(6),
 	groups = {food_meat = 1, food_chicken = 1}
 })
 
 mobs.add_eatable("mobs:chicken_cooked", 6)
 
-minetest.register_craft({
+core.register_craft({
 	type  =  "cooking",
 	recipe  = "mobs:chicken_raw",
 	output = "mobs:chicken_cooked"
@@ -288,10 +288,10 @@ minetest.register_craft({
 
 -- feather and fuel
 
-minetest.register_craftitem(":mobs:chicken_feather", {
+core.register_craftitem(":mobs:chicken_feather", {
 	description = S("Feather"),
 	inventory_image = "mobs_chicken_feather.png",
 	groups = {flammable = 2, feather = 1}
 })
 
-minetest.register_craft({type = "fuel", recipe = "mobs:chicken_feather", burntime = 1})
+core.register_craft({type = "fuel", recipe = "mobs:chicken_feather", burntime = 1})
diff --git a/cow.lua b/cow.lua
index 687484d..43846b5 100644
--- a/cow.lua
+++ b/cow.lua
@@ -1,9 +1,9 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- should cows eat grass blocks and mess up the environment?
 
-local eat_gb = minetest.settings:get_bool("mobs_animal.eat_grass_block")
+local eat_gb = core.settings:get_bool("mobs_animal.eat_grass_block")
 local replace_what = { {"group:grass", "air", 0} }
 
 if eat_gb then
@@ -104,7 +104,7 @@ mobs:register_mob("mobs_animal:cow", {
 
 			if self.gotten == true then
 
-				minetest.chat_send_player(name, S("Cow already milked!"))
+				core.chat_send_player(name, S("Cow already milked!"))
 
 				return
 			end
@@ -129,7 +129,7 @@ mobs:register_mob("mobs_animal:cow", {
 
 				pos.y = pos.y + 0.5
 
-				minetest.add_item(pos, {name = ret_item})
+				core.add_item(pos, {name = ret_item})
 			end
 
 			self.gotten = true -- milked
@@ -176,27 +176,27 @@ mobs:alias_mob("mobs:cow", "mobs_animal:cow")
 
 -- bucket of milk
 
-minetest.register_craftitem(":mobs:bucket_milk", {
+core.register_craftitem(":mobs:bucket_milk", {
 	description = S("Bucket of Milk"),
 	inventory_image = "mobs_bucket_milk.png",
 	stack_max = 1,
-	on_use = minetest.item_eat(8, "bucket:bucket_empty"),
+	on_use = core.item_eat(8, "bucket:bucket_empty"),
 	groups = {food_milk = 1, drink = 1}
 })
 
 mobs.add_eatable("mobs:bucket_milk", 8)
 
 -- glass of milk and recipes
-minetest.register_craftitem(":mobs:glass_milk", {
+core.register_craftitem(":mobs:glass_milk", {
 	description = S("Glass of Milk"),
 	inventory_image = "mobs_glass_milk.png",
-	on_use = minetest.item_eat(2, "vessels:drinking_glass"),
+	on_use = core.item_eat(2, "vessels:drinking_glass"),
 	groups = {food_milk_glass = 1, vessel = 1, drink = 1}
 })
 
 mobs.add_eatable("mobs:glass_milk", 2)
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:glass_milk 4",
 	recipe = {
 		{"vessels:drinking_glass", "vessels:drinking_glass"},
@@ -206,7 +206,7 @@ minetest.register_craft({
 	replacements = {{"mobs:bucket_milk", "bucket:bucket_empty"}}
 })
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:bucket_milk",
 	recipe = {
 		{"group:food_milk_glass", "group:food_milk_glass"},
@@ -220,10 +220,10 @@ minetest.register_craft({
 
 -- butter and recipe
 
-minetest.register_craftitem(":mobs:butter", {
+core.register_craftitem(":mobs:butter", {
 	description = S("Butter"),
 	inventory_image = "mobs_butter.png",
-	on_use = minetest.item_eat(1),
+	on_use = core.item_eat(1),
 	groups = {food_butter = 1}
 })
 
@@ -231,11 +231,11 @@ mobs.add_eatable("mobs:butter", 1)
 
 local salt_item = "default:sapling" -- some saplings are high in sodium
 
-if minetest.get_modpath("farming") and farming and farming.mod then
+if core.get_modpath("farming") and farming and farming.mod then
 	salt_item = "farming:salt"
 end
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:butter",
 	recipe = {{"mobs:bucket_milk", salt_item}},
 	replacements = {{"mobs:bucket_milk", "bucket:bucket_empty"}}
@@ -243,16 +243,16 @@ minetest.register_craft({
 
 -- cheese wedge and recipe
 
-minetest.register_craftitem(":mobs:cheese", {
+core.register_craftitem(":mobs:cheese", {
 	description = S("Cheese"),
 	inventory_image = "mobs_cheese.png",
-	on_use = minetest.item_eat(4),
+	on_use = core.item_eat(4),
 	groups = {food_cheese = 1}
 })
 
 mobs.add_eatable("mobs:cheese", 4)
 
-minetest.register_craft({
+core.register_craft({
 	type = "cooking",
 	output = "mobs:cheese",
 	recipe = "mobs:bucket_milk",
@@ -262,7 +262,7 @@ minetest.register_craft({
 
 -- cheese block and recipe
 
-minetest.register_node(":mobs:cheeseblock", {
+core.register_node(":mobs:cheeseblock", {
 	description = S("Cheese Block"),
 	tiles = {"mobs_cheeseblock.png"},
 	is_ground_content = false,
@@ -270,7 +270,7 @@ minetest.register_node(":mobs:cheeseblock", {
 	sounds = mobs.node_sound_dirt_defaults()
 })
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:cheeseblock",
 	recipe = {
 		{"group:food_cheese", "group:food_cheese", "group:food_cheese"},
@@ -279,30 +279,30 @@ minetest.register_craft({
 	}
 })
 
-minetest.register_craft({
+core.register_craft({
 	output = "mobs:cheese 9",
 	recipe = {{"mobs:cheeseblock"}}
 })
 
 -- check for either of the wood bucket mods and add compatibility
 
-local wb = minetest.get_modpath("wooden_bucket")
-local bw = minetest.get_modpath("bucket_wooden")
+local wb = core.get_modpath("wooden_bucket")
+local bw = core.get_modpath("bucket_wooden")
 
 if wb or bw then
 
 	local return_item = wb and "wooden_bucket:bucket_wood_empty"
 			or "bucket_wooden:bucket_empty"
 
-	minetest.register_craftitem(":mobs:wooden_bucket_milk", {
+	core.register_craftitem(":mobs:wooden_bucket_milk", {
 		description = S("Wooden Bucket of Milk"),
 		inventory_image = "mobs_wooden_bucket_milk.png",
 		stack_max = 1,
-		on_use = minetest.item_eat(8, return_item),
+		on_use = core.item_eat(8, return_item),
 		groups = {food_milk = 1, flammable = 3, drink = 1}
 	})
 
-	minetest.register_craft({
+	core.register_craft({
 		output = "mobs:glass_milk 4",
 		recipe = {
 			{"vessels:drinking_glass", "vessels:drinking_glass"},
@@ -312,7 +312,7 @@ if wb or bw then
 		replacements = {{"mobs:wooden_bucket_milk", return_item}}
 	})
 
-	minetest.register_craft({
+	core.register_craft({
 		output = "mobs:wooden_bucket_milk",
 		recipe = {
 			{"group:food_milk_glass", "group:food_milk_glass"},
@@ -324,7 +324,7 @@ if wb or bw then
 		}
 	})
 
-	minetest.register_craft({
+	core.register_craft({
 		output = "mobs:butter",
 		recipe = {{"mobs:wooden_bucket_milk", salt_item}},
 		replacements = {{"mobs:wooden_bucket_milk", return_item}}
diff --git a/init.lua b/init.lua
index fdca8c6..e5c171a 100644
--- a/init.lua
+++ b/init.lua
@@ -1,8 +1,8 @@
 
 -- translation and mod path
 
-local S = minetest.get_translator("mobs_animal")
-local path = minetest.get_modpath(minetest.get_current_modname()) .. "/"
+local S = core.get_translator("mobs_animal")
+local path = core.get_modpath(core.get_current_modname()) .. "/"
 
 -- Check for custom mob spawn file
 
@@ -18,7 +18,7 @@ end
 
 local function ddoo(mob)
 
-	if minetest.settings:get_bool("mobs_animal." .. mob) == false then
+	if core.settings:get_bool("mobs_animal." .. mob) == false then
 		print("[Mobs_Animal] " .. mob .. " disabled!")
 		return
 	end
@@ -47,7 +47,7 @@ end
 
 -- Lucky Blocks
 
-if minetest.get_modpath("lucky_block") then
+if core.get_modpath("lucky_block") then
 	dofile(path .. "lucky_block.lua")
 end
 
diff --git a/kitten.lua b/kitten.lua
index 95cb41c..62a7511 100644
--- a/kitten.lua
+++ b/kitten.lua
@@ -1,8 +1,8 @@
 
 -- translation and hairball setting
 
-local S = minetest.get_translator("mobs_animal")
-local hairball = minetest.settings:get_bool("mobs_animal.hairball") ~= false
+local S = core.get_translator("mobs_animal")
+local hairball = core.settings:get_bool("mobs_animal.hairball") ~= false
 
 -- custom kitty types
 
@@ -74,7 +74,7 @@ mobs:register_mob("mobs_animal:kitten", {
 
 			tmp = kitten_types[n]
 
-			if minetest.find_node_near(pos, 1, tmp.nodes) then
+			if core.find_node_near(pos, 1, tmp.nodes) then
 
 				self.base_texture = tmp.skins
 				self.object:set_properties({textures = tmp.skins})
@@ -119,9 +119,9 @@ mobs:register_mob("mobs_animal:kitten", {
 
 		local pos = self.object:get_pos()
 
-		minetest.add_item(pos, "mobs:hairball")
+		core.add_item(pos, "mobs:hairball")
 
-		minetest.sound_play("default_dig_snappy", {
+		core.sound_play("default_dig_snappy", {
 				pos = pos, gain = 1.0, max_hear_distance = 5}, true)
 	end
 })
@@ -132,7 +132,7 @@ if not mobs.custom_spawn_animal then
 
 	local spawn_on = "default:dirt_with_grass"
 
-	if minetest.get_modpath("ethereal") then
+	if core.get_modpath("ethereal") then
 		spawn_on = "ethereal:grove_dirt"
 	end
 
@@ -170,7 +170,7 @@ local hairball_items = {
 	"ethereal:fish_tetra"
 }
 
-minetest.register_craftitem(":mobs:hairball", {
+core.register_craftitem(":mobs:hairball", {
 	description = S("Hairball"),
 	inventory_image = "mobs_hairball.png",
 
@@ -181,11 +181,11 @@ minetest.register_craftitem(":mobs:hairball", {
 		local newpos = {x = pos.x + dir.x, y = pos.y + dir.y + 1.5, z = pos.z + dir.z}
 		local item = hairball_items[math.random(1, #hairball_items)]
 
-		if item ~= "" and minetest.registered_items[item] then
-			minetest.add_item(newpos, {name = item})
+		if item ~= "" and core.registered_items[item] then
+			core.add_item(newpos, {name = item})
 		end
 
-		minetest.sound_play("default_place_node_hard", {
+		core.sound_play("default_place_node_hard", {
 				pos = newpos, gain = 1.0, max_hear_distance = 5}, true)
 
 		itemstack:take_item()
diff --git a/lucky_block.lua b/lucky_block.lua
index bf7f6a0..49ecfb5 100644
--- a/lucky_block.lua
+++ b/lucky_block.lua
@@ -25,7 +25,7 @@ lucky_block:add_blocks({
 
 -- if nyancat found add special block
 
-if minetest.registered_nodes["default:nyancat"] then
+if core.registered_nodes["default:nyancat"] then
 
 	lucky_block:add_blocks({
 		{"tro", "default:nyancat", "mobs_kitten", true}
diff --git a/panda.lua b/panda.lua
index 9a1bf82..92e929f 100644
--- a/panda.lua
+++ b/panda.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Panda by AspireMint (CC BY-SA 3.0)
 
@@ -60,7 +60,7 @@ mobs:register_mob("mobs_animal:panda", {
 
 -- where to spawn (ethereal bamboo biome only)
 
-if minetest.get_modpath("ethereal") and not mobs.custom_spawn_animal then
+if core.get_modpath("ethereal") and not mobs.custom_spawn_animal then
 
 	mobs:spawn({
 		name = "mobs_animal:panda",
diff --git a/penguin.lua b/penguin.lua
index b08a154..099de55 100644
--- a/penguin.lua
+++ b/penguin.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Penguin by D00Med
 
diff --git a/rat.lua b/rat.lua
index 5d379ce..970d92b 100644
--- a/rat.lua
+++ b/rat.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Rat by KPavel and PilzAdam (B3D model by sirrobzeroone)
 
@@ -93,16 +93,16 @@ mobs:alias_mob("mobs:rat", "mobs_animal:rat")
 
 -- cooked rat, yummy!
 
-minetest.register_craftitem(":mobs:rat_cooked", {
+core.register_craftitem(":mobs:rat_cooked", {
 	description = S("Cooked Rat"),
 	inventory_image = "mobs_cooked_rat.png",
-	on_use = minetest.item_eat(3),
+	on_use = core.item_eat(3),
 	groups = {food_rat = 1}
 })
 
 mobs.add_eatable("mobs:rat_cooked", 3)
 
-minetest.register_craft({
+core.register_craft({
 	type = "cooking",
 	output = "mobs:rat_cooked",
 	recipe = "mobs_animal:rat",
diff --git a/sheep.lua b/sheep.lua
index d56401e..38f6bd3 100644
--- a/sheep.lua
+++ b/sheep.lua
@@ -1,12 +1,12 @@
 
 -- translation and localize function
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 local random = math.random
 
 -- should sheep eat grass blocks and mess up the environment?
 
-local eat_gb = minetest.settings:get_bool("mobs_animal.eat_grass_block")
+local eat_gb = core.settings:get_bool("mobs_animal.eat_grass_block")
 local replace_what = { {"group:grass", "air", -1} }
 
 if eat_gb then
@@ -169,7 +169,7 @@ for _, col in ipairs(all_colours) do
 			----------------------------------------------------
 			pos.y = pos.y + 0.5 -- spawn child a little higher
 
-			local mob = minetest.add_entity(pos, parent1.name)
+			local mob = core.add_entity(pos, parent1.name)
 			local ent2 = mob:get_luaentity()
 
 			-- remove horns from parents' texture string, lambs dont have horns
@@ -275,7 +275,7 @@ for _, col in ipairs(all_colours) do
 			if itemname == "mobs:shears" then
 
 				if self.gotten ~= false or self.child ~= false
-				or name ~= self.owner or not minetest.get_modpath("wool") then
+				or name ~= self.owner or not core.get_modpath("wool") then
 					return
 				end
 
@@ -283,7 +283,7 @@ for _, col in ipairs(all_colours) do
 				self.drops = drops_gotten
 				self.food = 0 -- reset food
 
-				local obj = minetest.add_item(
+				local obj = core.add_item(
 					self.object:get_pos(),
 					ItemStack("wool:" .. col[1] .. " " .. random(3))
 				)
@@ -320,7 +320,7 @@ for _, col in ipairs(all_colours) do
 							local pos = self.object:get_pos()
 
 							-- add new coloured sheep
-							local mob = minetest.add_entity(pos, "mobs_animal:sheep_" .. colr)
+							local mob = core.add_entity(pos, "mobs_animal:sheep_" .. colr)
 							local ent = mob:get_luaentity()
 
 							if ent then
@@ -385,7 +385,7 @@ if not mobs.custom_spawn_animal then
 
 	local max_ht = 400
 	local spawn_on = {"default:dirt_with_grass", "ethereal:green_dirt"}
-	local mod_ethereal = minetest.get_modpath("ethereal")
+	local mod_ethereal = core.get_modpath("ethereal")
 	local spawn_chance = mod_ethereal and 12000 or 8000
 
 	mobs:spawn({
@@ -471,7 +471,7 @@ if not mobs.custom_spawn_animal then
 			random_sheep(pos, true)
 
 			-- Rest of herd
-			local nods = minetest.find_nodes_in_area_under_air(
+			local nods = core.find_nodes_in_area_under_air(
 				{x = pos.x - 4, y = pos.y - 3, z = pos.z - 4},
 				{x = pos.x + 4, y = pos.y + 3, z = pos.z + 4}, spawn_on)
 
@@ -486,7 +486,7 @@ if not mobs.custom_spawn_animal then
 
 					pos2.y = pos2.y + 2
 
-					if minetest.get_node(pos2).name == "air" then
+					if core.get_node(pos2).name == "air" then
 
 						-- Add a sheep or lamb
 						random_sheep(pos2, false)
@@ -503,10 +503,10 @@ mobs:alias_mob("mobs:sheep", "mobs_animal:sheep_white")
 
 -- raw mutton
 
-minetest.register_craftitem(":mobs:mutton_raw", {
+core.register_craftitem(":mobs:mutton_raw", {
 	description = S("Raw Mutton"),
 	inventory_image = "mobs_mutton_raw.png",
-	on_use = minetest.item_eat(2),
+	on_use = core.item_eat(2),
 	groups = {food_meat_raw = 1, food_mutton_raw = 1}
 })
 
@@ -514,16 +514,16 @@ mobs.add_eatable("mobs:mutton_raw", 2)
 
 -- cooked mutton and recipe
 
-minetest.register_craftitem(":mobs:mutton_cooked", {
+core.register_craftitem(":mobs:mutton_cooked", {
 	description = S("Cooked Mutton"),
 	inventory_image = "mobs_mutton_cooked.png",
-	on_use = minetest.item_eat(6),
+	on_use = core.item_eat(6),
 	groups = {food_meat = 1, food_mutton = 1}
 })
 
 mobs.add_eatable("mobs:mutton_cooked", 6)
 
-minetest.register_craft({
+core.register_craft({
 	type = "cooking",
 	output = "mobs:mutton_cooked",
 	recipe = "mobs:mutton_raw",
diff --git a/warthog.lua b/warthog.lua
index 960bd13..bd9db1e 100644
--- a/warthog.lua
+++ b/warthog.lua
@@ -1,5 +1,5 @@
 
-local S = minetest.get_translator("mobs_animal")
+local S = core.get_translator("mobs_animal")
 
 -- Warthog originally by KrupnoPavel, B3D model by sirrobzeroone
 
@@ -64,7 +64,7 @@ if not mobs.custom_spawn_animal then
 	local spawn_on = {"default:dirt_with_grass", "default:dry_dirt_with_dry_grass"}
 	local spawn_by = {"group:grass"}
 
-	if minetest.get_modpath("ethereal") then
+	if core.get_modpath("ethereal") then
 		spawn_on = {"ethereal:mushroom_dirt"}
 		spawn_by = {"flowers:mushroom_brown", "flowers:mushroom_red"}
 	end
@@ -92,10 +92,10 @@ mobs:alias_mob("mobs:pumba", "mobs_animal:pumba")
 
 -- raw porkchop
 
-minetest.register_craftitem(":mobs:pork_raw", {
+core.register_craftitem(":mobs:pork_raw", {
 	description = S("Raw Porkchop"),
 	inventory_image = "mobs_pork_raw.png",
-	on_use = minetest.item_eat(4),
+	on_use = core.item_eat(4),
 	groups = {food_meat_raw = 1, food_pork_raw = 1}
 })
 
@@ -103,16 +103,16 @@ mobs.add_eatable("mobs:pork_raw", 4)
 
 -- cooked porkchop and recipe
 
-minetest.register_craftitem(":mobs:pork_cooked", {
+core.register_craftitem(":mobs:pork_cooked", {
 	description = S("Cooked Porkchop"),
 	inventory_image = "mobs_pork_cooked.png",
-	on_use = minetest.item_eat(8),
+	on_use = core.item_eat(8),
 	groups = {food_meat = 1, food_pork = 1}
 })
 
 mobs.add_eatable("mobs:pork_cooked", 8)
 
-minetest.register_craft({
+core.register_craft({
 	type = "cooking",
 	output = "mobs:pork_cooked",
 	recipe = "mobs:pork_raw",