diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index e70557005..c515bca71 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -66,7 +66,7 @@ use pocketmine\Player;
 use pocketmine\plugin\Plugin;
 use pocketmine\Server;
 
-abstract class Entity extends Location implements Metadatable{
+abstract class Entity extends Location implements Metadatable, EntityIds{
 
 	const MOTION_THRESHOLD = 0.00001;
 
diff --git a/src/pocketmine/entity/EntityIds.php b/src/pocketmine/entity/EntityIds.php
new file mode 100644
index 000000000..c0074954d
--- /dev/null
+++ b/src/pocketmine/entity/EntityIds.php
@@ -0,0 +1,119 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\entity;
+
+interface EntityIds{
+
+	const CHICKEN = 10;
+	const COW = 11;
+	const PIG = 12;
+	const SHEEP = 13;
+	const WOLF = 14;
+	const VILLAGER = 15;
+	const MOOSHROOM = 16;
+	const SQUID = 17;
+	const RABBIT = 18;
+	const BAT = 19;
+	const IRON_GOLEM = 20;
+	const SNOW_GOLEM = 21;
+	const OCELOT = 22;
+	const HORSE = 23;
+	const DONKEY = 24;
+	const MULE = 25;
+	const SKELETON_HORSE = 26;
+	const ZOMBIE_HORSE = 27;
+	const POLAR_BEAR = 28;
+	const LLAMA = 29;
+	const PARROT = 30;
+
+	const ZOMBIE = 32;
+	const CREEPER = 33;
+	const SKELETON = 34;
+	const SPIDER = 35;
+	const ZOMBIE_PIGMAN = 36;
+	const SLIME = 37;
+	const ENDERMAN = 38;
+	const SILVERFISH = 39;
+	const CAVE_SPIDER = 40;
+	const GHAST = 41;
+	const MAGMA_CUBE = 42;
+	const BLAZE = 43;
+	const ZOMBIE_VILLAGER = 44;
+	const WITCH = 45;
+	const STRAY = 46;
+	const HUSK = 47;
+	const WITHER_SKELETON = 48;
+	const GUARDIAN = 49;
+	const ELDER_GUARDIAN = 50;
+	const NPC = 51;
+	const WITHER = 52;
+	const ENDER_DRAGON = 53;
+	const SHULKER = 54;
+	const ENDERMITE = 55;
+	const LEARN_TO_CODE_MASCOT = 56;
+	const VINDICATOR = 57;
+
+	const ARMOR_STAND = 61;
+	const TRIPOD_CAMERA = 62;
+	const PLAYER = 63;
+	const ITEM = 64;
+	const TNT = 65;
+	const FALLING_BLOCK = 66;
+	const MOVING_BLOCK = 67;
+	const XP_BOTTLE = 68;
+	const XP_ORB = 69;
+	const EYE_OF_ENDER_SIGNAL = 70;
+	const ENDER_CRYSTAL = 71;
+	const FIREWORKS_ROCKET = 72;
+
+	const SHULKER_BULLET = 76;
+	const FISHING_HOOK = 77;
+	const CHALKBOARD = 78;
+	const DRAGON_FIREBALL = 79;
+	const ARROW = 80;
+	const SNOWBALL = 81;
+	const EGG = 82;
+	const PAINTING = 83;
+	const MINECART = 84;
+	const LARGE_FIREBALL = 85;
+	const SPLASH_POTION = 86;
+	const ENDER_PEARL = 87;
+	const LEASH_KNOT = 88;
+	const WITHER_SKULL = 89;
+	const BOAT = 90;
+	const WITHER_SKULL_DANGEROUS = 91;
+	const LIGHTNING_BOLT = 93;
+	const SMALL_FIREBALL = 94;
+	const AREA_EFFECT_CLOUD = 95;
+	const HOPPER_MINECART = 96;
+	const TNT_MINECART = 97;
+	const CHEST_MINECART = 98;
+
+	const COMMAND_BLOCK_MINECART = 100;
+	const LINGERING_POTION = 101;
+	const LLAMA_SPIT = 102;
+	const EVOCATION_FANG = 103;
+	const EVOCATION_ILLAGER = 104;
+	const VEX = 105;
+}
\ No newline at end of file
diff --git a/src/pocketmine/entity/FallingSand.php b/src/pocketmine/entity/FallingSand.php
index a447dfce3..2773608df 100644
--- a/src/pocketmine/entity/FallingSand.php
+++ b/src/pocketmine/entity/FallingSand.php
@@ -35,7 +35,7 @@ use pocketmine\network\mcpe\protocol\AddEntityPacket;
 use pocketmine\Player;
 
 class FallingSand extends Entity{
-	const NETWORK_ID = 66;
+	const NETWORK_ID = self::FALLING_BLOCK;
 
 	public $width = 0.98;
 	public $height = 0.98;
diff --git a/src/pocketmine/entity/Item.php b/src/pocketmine/entity/Item.php
index d03fbd437..632e8b573 100644
--- a/src/pocketmine/entity/Item.php
+++ b/src/pocketmine/entity/Item.php
@@ -34,7 +34,7 @@ use pocketmine\network\mcpe\protocol\AddItemEntityPacket;
 use pocketmine\Player;
 
 class Item extends Entity{
-	const NETWORK_ID = 64;
+	const NETWORK_ID = self::ITEM;
 
 	/** @var string */
 	protected $owner = "";
diff --git a/src/pocketmine/entity/PrimedTNT.php b/src/pocketmine/entity/PrimedTNT.php
index 471d09981..5c54748e1 100644
--- a/src/pocketmine/entity/PrimedTNT.php
+++ b/src/pocketmine/entity/PrimedTNT.php
@@ -32,7 +32,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 use pocketmine\Player;
 
 class PrimedTNT extends Entity implements Explosive{
-	const NETWORK_ID = 65;
+	const NETWORK_ID = self::TNT;
 
 	public $width = 0.98;
 	public $height = 0.98;
diff --git a/src/pocketmine/entity/Squid.php b/src/pocketmine/entity/Squid.php
index 1c141260d..e09069278 100644
--- a/src/pocketmine/entity/Squid.php
+++ b/src/pocketmine/entity/Squid.php
@@ -33,7 +33,7 @@ use pocketmine\network\mcpe\protocol\EntityEventPacket;
 use pocketmine\Player;
 
 class Squid extends WaterAnimal{
-	const NETWORK_ID = 17;
+	const NETWORK_ID = self::SQUID;
 
 	public $width = 0.95;
 	public $height = 0.95;
diff --git a/src/pocketmine/entity/Villager.php b/src/pocketmine/entity/Villager.php
index 9aab2ed1e..6e65a603f 100644
--- a/src/pocketmine/entity/Villager.php
+++ b/src/pocketmine/entity/Villager.php
@@ -34,7 +34,7 @@ class Villager extends Creature implements NPC, Ageable{
 	const PROFESSION_BLACKSMITH = 3;
 	const PROFESSION_BUTCHER = 4;
 
-	const NETWORK_ID = 15;
+	const NETWORK_ID = self::VILLAGER;
 
 	public $width = 0.6;
 	public $height = 1.8;
diff --git a/src/pocketmine/entity/Zombie.php b/src/pocketmine/entity/Zombie.php
index f28fb6ff9..c7da708b9 100644
--- a/src/pocketmine/entity/Zombie.php
+++ b/src/pocketmine/entity/Zombie.php
@@ -30,7 +30,7 @@ use pocketmine\network\mcpe\protocol\AddEntityPacket;
 use pocketmine\Player;
 
 class Zombie extends Monster{
-	const NETWORK_ID = 32;
+	const NETWORK_ID = self::ZOMBIE;
 
 	public $width = 0.6;
 	public $height = 1.8;
diff --git a/src/pocketmine/entity/projectile/Arrow.php b/src/pocketmine/entity/projectile/Arrow.php
index 484e6a9e0..7f70d77b3 100644
--- a/src/pocketmine/entity/projectile/Arrow.php
+++ b/src/pocketmine/entity/projectile/Arrow.php
@@ -30,7 +30,7 @@ use pocketmine\network\mcpe\protocol\AddEntityPacket;
 use pocketmine\Player;
 
 class Arrow extends Projectile{
-	const NETWORK_ID = 80;
+	const NETWORK_ID = self::ARROW;
 
 	public $width = 0.25;
 	public $height = 0.25;
diff --git a/src/pocketmine/entity/projectile/Egg.php b/src/pocketmine/entity/projectile/Egg.php
index 2545098c7..1e46988e0 100644
--- a/src/pocketmine/entity/projectile/Egg.php
+++ b/src/pocketmine/entity/projectile/Egg.php
@@ -27,7 +27,7 @@ use pocketmine\network\mcpe\protocol\AddEntityPacket;
 use pocketmine\Player;
 
 class Egg extends Throwable{
-	const NETWORK_ID = 82;
+	const NETWORK_ID = self::EGG;
 
 	public function spawnTo(Player $player){
 		$pk = new AddEntityPacket();
diff --git a/src/pocketmine/entity/projectile/Snowball.php b/src/pocketmine/entity/projectile/Snowball.php
index cd6771db2..009c3da25 100644
--- a/src/pocketmine/entity/projectile/Snowball.php
+++ b/src/pocketmine/entity/projectile/Snowball.php
@@ -27,7 +27,7 @@ use pocketmine\network\mcpe\protocol\AddEntityPacket;
 use pocketmine\Player;
 
 class Snowball extends Throwable{
-	const NETWORK_ID = 81;
+	const NETWORK_ID = self::SNOWBALL;
 
 	public function spawnTo(Player $player){
 		$pk = new AddEntityPacket();