diff --git a/src/pocketmine/block/WoodSlab.php b/src/pocketmine/block/WoodSlab.php
index 109b4bcbadc..f9406baac07 100644
--- a/src/pocketmine/block/WoodSlab.php
+++ b/src/pocketmine/block/WoodSlab.php
@@ -26,7 +26,7 @@
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\Player;
 
-class WoodSlab extends Transparent{
+class WoodSlab extends Slab{
 
 	protected $id = self::WOOD_SLAB;
 
diff --git a/src/pocketmine/entity/Bat.php b/src/pocketmine/entity/Bat.php
index 8d5bb10e9cc..7b46a17545f 100644
--- a/src/pocketmine/entity/Bat.php
+++ b/src/pocketmine/entity/Bat.php
@@ -1,9 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Bat extends Animal{
 	const NETWORK_ID = 19;
diff --git a/src/pocketmine/entity/Blaze.php b/src/pocketmine/entity/Blaze.php
index cd6c7fb5982..dc6a461681d 100644
--- a/src/pocketmine/entity/Blaze.php
+++ b/src/pocketmine/entity/Blaze.php
@@ -1,9 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Blaze extends Monster{
 	const NETWORK_ID = 43;
diff --git a/src/pocketmine/entity/Boat.php b/src/pocketmine/entity/Boat.php
index fe966d383a0..b16450738ec 100644
--- a/src/pocketmine/entity/Boat.php
+++ b/src/pocketmine/entity/Boat.php
@@ -1,13 +1,12 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\event\entity\EntityRegainHealthEvent;
 use pocketmine\level\format\Chunk;
-use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\ByteTag;
+use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Boat extends Vehicle{
 	const NETWORK_ID = 90;
diff --git a/src/pocketmine/entity/CaveSpider.php b/src/pocketmine/entity/CaveSpider.php
index f28b0db607a..bf6d2854b6e 100644
--- a/src/pocketmine/entity/CaveSpider.php
+++ b/src/pocketmine/entity/CaveSpider.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class CaveSpider extends Monster{
 	const NETWORK_ID = 40;
diff --git a/src/pocketmine/entity/Chicken.php b/src/pocketmine/entity/Chicken.php
index 3b0d9b420de..b9f28b1f6c7 100644
--- a/src/pocketmine/entity/Chicken.php
+++ b/src/pocketmine/entity/Chicken.php
@@ -3,8 +3,8 @@
 
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Chicken extends Animal{
 	const NETWORK_ID = 10;
diff --git a/src/pocketmine/entity/Cow.php b/src/pocketmine/entity/Cow.php
index dc13dbeb9c0..8ee5684010c 100644
--- a/src/pocketmine/entity/Cow.php
+++ b/src/pocketmine/entity/Cow.php
@@ -3,8 +3,8 @@
 
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Cow extends Animal{
     const NETWORK_ID = 11;
diff --git a/src/pocketmine/entity/Creeper.php b/src/pocketmine/entity/Creeper.php
index 16db54b9830..22f17e2ad24 100644
--- a/src/pocketmine/entity/Creeper.php
+++ b/src/pocketmine/entity/Creeper.php
@@ -5,8 +5,8 @@
 use pocketmine\event\entity\EntityExplodeEvent;
 use pocketmine\item\Item as ItemItem;
 use pocketmine\nbt\tag\IntTag;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Creeper extends Monster implements Explosive{
     const NETWORK_ID = 33;
diff --git a/src/pocketmine/entity/Donkey.php b/src/pocketmine/entity/Donkey.php
index 46ca60e6d86..2ad34981682 100644
--- a/src/pocketmine/entity/Donkey.php
+++ b/src/pocketmine/entity/Donkey.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Donkey extends Animal implements Rideable{
     const NETWORK_ID = 24;
diff --git a/src/pocketmine/entity/DragonFireball.php b/src/pocketmine/entity/DragonFireball.php
index 71bc27d40aa..d20232daa4e 100644
--- a/src/pocketmine/entity/DragonFireball.php
+++ b/src/pocketmine/entity/DragonFireball.php
@@ -1,9 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class DragonFireball extends Projectile{
 	const NETWORK_ID = 79;
diff --git a/src/pocketmine/entity/Egg.php b/src/pocketmine/entity/Egg.php
index a3d8c735509..37b397d1d98 100644
--- a/src/pocketmine/entity/Egg.php
+++ b/src/pocketmine/entity/Egg.php
@@ -4,12 +4,8 @@
 
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
-use pocketmine\nbt\tag\ListTag;
-use pocketmine\nbt\tag\DoubleTag;
-use pocketmine\nbt\tag\FloatTag;
-use pocketmine\nbt\tag\StringTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Egg extends Projectile{
 	const NETWORK_ID = 82;
diff --git a/src/pocketmine/entity/ElderGuardian.php b/src/pocketmine/entity/ElderGuardian.php
index 17ef15db033..e8877cbcb26 100644
--- a/src/pocketmine/entity/ElderGuardian.php
+++ b/src/pocketmine/entity/ElderGuardian.php
@@ -1,10 +1,10 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\event\entity\EntityDamageEvent;
+use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class ElderGuardian extends Guardian{
 	const NETWORK_ID = 50;
diff --git a/src/pocketmine/entity/EnderCrystal.php b/src/pocketmine/entity/EnderCrystal.php
index 5eea4bd8d19..efe953cc3d2 100644
--- a/src/pocketmine/entity/EnderCrystal.php
+++ b/src/pocketmine/entity/EnderCrystal.php
@@ -1,13 +1,13 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\math\Vector3;
-use pocketmine\Player;
-use pocketmine\level\format\Chunk;
-use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\event\entity\ExplosionPrimeEvent;
 use pocketmine\level\Explosion;
+use pocketmine\level\format\Chunk;
+use pocketmine\math\Vector3;
+use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class EnderCrystal extends Living implements Explosive{
 	const NETWORK_ID = 71;
diff --git a/src/pocketmine/entity/EnderDragon.php b/src/pocketmine/entity/EnderDragon.php
index 5aea77cd662..0fd247ebdff 100644
--- a/src/pocketmine/entity/EnderDragon.php
+++ b/src/pocketmine/entity/EnderDragon.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class EnderDragon extends Monster implements ProjectileSource{
     const NETWORK_ID = 53;
diff --git a/src/pocketmine/entity/EnderSignal.php b/src/pocketmine/entity/EnderSignal.php
index 65ee88bcb15..93275d4bdcb 100644
--- a/src/pocketmine/entity/EnderSignal.php
+++ b/src/pocketmine/entity/EnderSignal.php
@@ -1,11 +1,11 @@
 <?php
 namespace pocketmine\entity;
 
+use pocketmine\item\Item as ItemItem;
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class EnderSignal extends Entity{
 	const NETWORK_ID = 70;
diff --git a/src/pocketmine/entity/Enderman.php b/src/pocketmine/entity/Enderman.php
index 3b4914b938e..68c90ee1065 100644
--- a/src/pocketmine/entity/Enderman.php
+++ b/src/pocketmine/entity/Enderman.php
@@ -1,10 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Enderman extends Monster{
 	const NETWORK_ID = 38;
diff --git a/src/pocketmine/entity/Endermite.php b/src/pocketmine/entity/Endermite.php
index ddbd911cf62..1747971b056 100644
--- a/src/pocketmine/entity/Endermite.php
+++ b/src/pocketmine/entity/Endermite.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Endermite extends Monster{
     const NETWORK_ID = 55;
diff --git a/src/pocketmine/entity/ExperienceOrb.php b/src/pocketmine/entity/ExperienceOrb.php
index 0afc729a0a3..f67e29ffc77 100644
--- a/src/pocketmine/entity/ExperienceOrb.php
+++ b/src/pocketmine/entity/ExperienceOrb.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class ExperienceOrb extends Entity{
 	const NETWORK_ID = 69;
diff --git a/src/pocketmine/entity/FishingHook.php b/src/pocketmine/entity/FishingHook.php
index e4dd18ea4ba..60015a390df 100644
--- a/src/pocketmine/entity/FishingHook.php
+++ b/src/pocketmine/entity/FishingHook.php
@@ -4,11 +4,8 @@
 
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
-use pocketmine\network\protocol\EntityEventPacket;
-use pocketmine\Server;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class FishingHook extends Projectile{
 	const NETWORK_ID = 77;
diff --git a/src/pocketmine/entity/Ghast.php b/src/pocketmine/entity/Ghast.php
index 299576e5075..02ef6573a09 100644
--- a/src/pocketmine/entity/Ghast.php
+++ b/src/pocketmine/entity/Ghast.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Ghast extends Monster{
 	const NETWORK_ID = 41;
diff --git a/src/pocketmine/entity/Guardian.php b/src/pocketmine/entity/Guardian.php
index 81ddecdf6ac..18c0925d8ce 100644
--- a/src/pocketmine/entity/Guardian.php
+++ b/src/pocketmine/entity/Guardian.php
@@ -1,10 +1,10 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\event\entity\EntityDamageEvent;
+use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Guardian extends WaterAnimal implements Ageable{
 	const NETWORK_ID = 49;
diff --git a/src/pocketmine/entity/Horse.php b/src/pocketmine/entity/Horse.php
index b52a0b11b19..2252790fd02 100644
--- a/src/pocketmine/entity/Horse.php
+++ b/src/pocketmine/entity/Horse.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Horse extends Animal implements Rideable{
     const NETWORK_ID = 23;
diff --git a/src/pocketmine/entity/Husk.php b/src/pocketmine/entity/Husk.php
index 9acbbedca26..93f0e25a164 100644
--- a/src/pocketmine/entity/Husk.php
+++ b/src/pocketmine/entity/Husk.php
@@ -3,8 +3,8 @@
 
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Husk extends Monster{
 	const NETWORK_ID = 47;
diff --git a/src/pocketmine/entity/IronGolem.php b/src/pocketmine/entity/IronGolem.php
index fa5c36954c2..a4ec11df553 100644
--- a/src/pocketmine/entity/IronGolem.php
+++ b/src/pocketmine/entity/IronGolem.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class IronGolem extends Animal{
     const NETWORK_ID = 20;
diff --git a/src/pocketmine/entity/LargeFireball.php b/src/pocketmine/entity/LargeFireball.php
index 36ebfcc40a4..4b8f3a59799 100644
--- a/src/pocketmine/entity/LargeFireball.php
+++ b/src/pocketmine/entity/LargeFireball.php
@@ -1,9 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class LargeFireball extends Projectile {
 	const NETWORK_ID = 85;
diff --git a/src/pocketmine/entity/LeashKnot.php b/src/pocketmine/entity/LeashKnot.php
index 2f16170fd75..755d8a30274 100644
--- a/src/pocketmine/entity/LeashKnot.php
+++ b/src/pocketmine/entity/LeashKnot.php
@@ -1,9 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class LeashKnot extends Entity{
 	const NETWORK_ID = 88;
diff --git a/src/pocketmine/entity/Lightning.php b/src/pocketmine/entity/Lightning.php
index 85ed062cbe0..4ed53613c72 100644
--- a/src/pocketmine/entity/Lightning.php
+++ b/src/pocketmine/entity/Lightning.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Lightning extends Entity{
 	const NETWORK_ID = 93;
diff --git a/src/pocketmine/entity/LingeringPotion.php b/src/pocketmine/entity/LingeringPotion.php
index 066991dc667..c00fc9d3f4b 100644
--- a/src/pocketmine/entity/LingeringPotion.php
+++ b/src/pocketmine/entity/LingeringPotion.php
@@ -6,9 +6,7 @@
 use pocketmine\item\Potion;
 use pocketmine\level\format\Chunk;
 use pocketmine\level\particle\DestroyBlockParticle;
-use pocketmine\level\particle\GenericParticle;
 use pocketmine\level\particle\ItemBreakParticle;
-use pocketmine\level\particle\Particle;
 use pocketmine\level\particle\SpellParticle;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\DoubleTag;
diff --git a/src/pocketmine/entity/Living.php b/src/pocketmine/entity/Living.php
index 1d983bef6c2..66d141e27cd 100644
--- a/src/pocketmine/entity/Living.php
+++ b/src/pocketmine/entity/Living.php
@@ -32,8 +32,8 @@
 use pocketmine\math\Vector3;
 use pocketmine\nbt\tag\ShortTag;
 use pocketmine\network\protocol\EntityEventPacket;
-use pocketmine\utils\BlockIterator;
 use pocketmine\Server;
+use pocketmine\utils\BlockIterator;
 
 abstract class Living extends Entity implements Damageable{
 
diff --git a/src/pocketmine/entity/MagmaCube.php b/src/pocketmine/entity/MagmaCube.php
index cf076c5dbd6..ee5d807d247 100644
--- a/src/pocketmine/entity/MagmaCube.php
+++ b/src/pocketmine/entity/MagmaCube.php
@@ -2,9 +2,9 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class MagmaCube extends Living{
 	const NETWORK_ID = 42;
diff --git a/src/pocketmine/entity/Minecart.php b/src/pocketmine/entity/Minecart.php
index 4fb396b9e51..cc75b5c0ef5 100644
--- a/src/pocketmine/entity/Minecart.php
+++ b/src/pocketmine/entity/Minecart.php
@@ -1,11 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\network\protocol\PlayerActionPacket;
-use pocketmine\Player;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\event\entity\EntityRegainHealthEvent;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Minecart extends Vehicle{
 
diff --git a/src/pocketmine/entity/MinecartChest.php b/src/pocketmine/entity/MinecartChest.php
index 9204bc595e0..ec499e04a90 100644
--- a/src/pocketmine/entity/MinecartChest.php
+++ b/src/pocketmine/entity/MinecartChest.php
@@ -1,10 +1,10 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\event\entity\EntityRegainHealthEvent;
+use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class MinecartChest extends Snake{
 
diff --git a/src/pocketmine/entity/MinecartHopper.php b/src/pocketmine/entity/MinecartHopper.php
index e23bd2fd8da..569c4c274b0 100644
--- a/src/pocketmine/entity/MinecartHopper.php
+++ b/src/pocketmine/entity/MinecartHopper.php
@@ -1,10 +1,10 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\event\entity\EntityRegainHealthEvent;
+use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class MinecartHopper extends Snake{
 
diff --git a/src/pocketmine/entity/MinecartTNT.php b/src/pocketmine/entity/MinecartTNT.php
index 7a441e8f572..56816f7c88b 100644
--- a/src/pocketmine/entity/MinecartTNT.php
+++ b/src/pocketmine/entity/MinecartTNT.php
@@ -2,10 +2,9 @@
 
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\event\entity\EntityRegainHealthEvent;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class MinecartTNT extends Snake{
 	const NETWORK_ID = 97;
diff --git a/src/pocketmine/entity/Mooshroom.php b/src/pocketmine/entity/Mooshroom.php
index 530fcc8341d..239a5521fc9 100644
--- a/src/pocketmine/entity/Mooshroom.php
+++ b/src/pocketmine/entity/Mooshroom.php
@@ -3,8 +3,8 @@
 
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Mooshroom extends Animal{
 	const NETWORK_ID = 16;
diff --git a/src/pocketmine/entity/Mule.php b/src/pocketmine/entity/Mule.php
index 9a7ff28cef4..b516f59f4cb 100644
--- a/src/pocketmine/entity/Mule.php
+++ b/src/pocketmine/entity/Mule.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Mule extends Animal implements Rideable{
     const NETWORK_ID = 25;
diff --git a/src/pocketmine/entity/Ozelot.php b/src/pocketmine/entity/Ozelot.php
index 4e8d0bbb012..c5e4b11834f 100644
--- a/src/pocketmine/entity/Ozelot.php
+++ b/src/pocketmine/entity/Ozelot.php
@@ -1,9 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Ozelot extends Animal implements Tameable{
 	const NETWORK_ID = 22;
diff --git a/src/pocketmine/entity/Painting.php b/src/pocketmine/entity/Painting.php
index 40dc9d1f1dc..ff6458a4258 100644
--- a/src/pocketmine/entity/Painting.php
+++ b/src/pocketmine/entity/Painting.php
@@ -2,12 +2,12 @@
 
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
-use pocketmine\network\protocol\AddPaintingPacket;
-use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\block\Block;
+use pocketmine\event\entity\EntityDamageEvent;
+use pocketmine\item\Item as ItemItem;
 use pocketmine\level\particle\DestroyBlockParticle;
+use pocketmine\network\protocol\AddPaintingPacket;
+use pocketmine\Player;
 
 class Painting extends Hanging{
 	const NETWORK_ID = 83;
diff --git a/src/pocketmine/entity/Pig.php b/src/pocketmine/entity/Pig.php
index ba260822ad3..5e681081f53 100644
--- a/src/pocketmine/entity/Pig.php
+++ b/src/pocketmine/entity/Pig.php
@@ -3,8 +3,8 @@
 
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Pig extends Animal implements Rideable{
     const NETWORK_ID = 12;
diff --git a/src/pocketmine/entity/PigZombie.php b/src/pocketmine/entity/PigZombie.php
index 6a8d139ce07..268ede44939 100644
--- a/src/pocketmine/entity/PigZombie.php
+++ b/src/pocketmine/entity/PigZombie.php
@@ -3,8 +3,8 @@
 
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class PigZombie extends Monster{
     const NETWORK_ID = 36;
diff --git a/src/pocketmine/entity/PolarBear.php b/src/pocketmine/entity/PolarBear.php
index 00321ba23de..45916348006 100644
--- a/src/pocketmine/entity/PolarBear.php
+++ b/src/pocketmine/entity/PolarBear.php
@@ -1,10 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class PolarBear extends Monster{
 	const NETWORK_ID = 28;
diff --git a/src/pocketmine/entity/Projectile.php b/src/pocketmine/entity/Projectile.php
index be35dd5e86d..4d27329ee6d 100644
--- a/src/pocketmine/entity/Projectile.php
+++ b/src/pocketmine/entity/Projectile.php
@@ -41,6 +41,7 @@ abstract class Projectile extends Entity{
 	/** @var Entity */
 	public $shootingEntity = null;
 	protected $damage = 0;
+	protected $isCritical;
 
 	public $hadCollision = false;
 
@@ -194,4 +195,7 @@ public function onUpdate($currentTick){
 		return $hasUpdate;
 	}
 
+	public function isCritical(){
+		return $this->isCritical;
+	}
 }
\ No newline at end of file
diff --git a/src/pocketmine/entity/Rabbit.php b/src/pocketmine/entity/Rabbit.php
index 9b8d2f89837..20e12478eee 100644
--- a/src/pocketmine/entity/Rabbit.php
+++ b/src/pocketmine/entity/Rabbit.php
@@ -4,8 +4,8 @@
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\item\Item as ItemItem;
 use pocketmine\nbt\tag\IntTag;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Rabbit extends Animal{
     const NETWORK_ID = 18;
diff --git a/src/pocketmine/entity/Sheep.php b/src/pocketmine/entity/Sheep.php
index e6ca5081d24..6cdf03a25ad 100644
--- a/src/pocketmine/entity/Sheep.php
+++ b/src/pocketmine/entity/Sheep.php
@@ -3,9 +3,9 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Sheep extends Animal implements Colorable{
 	const NETWORK_ID = 13;
diff --git a/src/pocketmine/entity/Shulker.php b/src/pocketmine/entity/Shulker.php
index 848b521728e..ecccf9cbb6b 100644
--- a/src/pocketmine/entity/Shulker.php
+++ b/src/pocketmine/entity/Shulker.php
@@ -1,9 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Shulker extends Monster{
 	const NETWORK_ID = 54;
diff --git a/src/pocketmine/entity/ShulkerBullet.php b/src/pocketmine/entity/ShulkerBullet.php
index 25222558fd9..b4224459264 100644
--- a/src/pocketmine/entity/ShulkerBullet.php
+++ b/src/pocketmine/entity/ShulkerBullet.php
@@ -3,9 +3,8 @@
 
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class ShulkerBullet extends Projectile{
 	const NETWORK_ID = 76;
diff --git a/src/pocketmine/entity/Silverfish.php b/src/pocketmine/entity/Silverfish.php
index e9251fdcff9..8c16de4c2a8 100644
--- a/src/pocketmine/entity/Silverfish.php
+++ b/src/pocketmine/entity/Silverfish.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Silverfish extends Monster{
     const NETWORK_ID = 39;
diff --git a/src/pocketmine/entity/Skeleton.php b/src/pocketmine/entity/Skeleton.php
index fb87e595869..31f0b3cffef 100644
--- a/src/pocketmine/entity/Skeleton.php
+++ b/src/pocketmine/entity/Skeleton.php
@@ -4,9 +4,8 @@
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityExplodeEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\nbt\tag\IntTag;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Skeleton extends Monster implements ProjectileSource{
     const NETWORK_ID = 34;
diff --git a/src/pocketmine/entity/SkeletonHorse.php b/src/pocketmine/entity/SkeletonHorse.php
index 253bd9b5d38..430ca919e40 100644
--- a/src/pocketmine/entity/SkeletonHorse.php
+++ b/src/pocketmine/entity/SkeletonHorse.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class SkeletonHorse extends Animal /*implements Rideable*/{
     const NETWORK_ID = 26;
diff --git a/src/pocketmine/entity/Slime.php b/src/pocketmine/entity/Slime.php
index 792fb2d0790..626dd4a9a0d 100644
--- a/src/pocketmine/entity/Slime.php
+++ b/src/pocketmine/entity/Slime.php
@@ -2,9 +2,9 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Slime extends Living{
     const NETWORK_ID = 37;
diff --git a/src/pocketmine/entity/SmallFireball.php b/src/pocketmine/entity/SmallFireball.php
index 94908ac6e54..b5a94d9e735 100644
--- a/src/pocketmine/entity/SmallFireball.php
+++ b/src/pocketmine/entity/SmallFireball.php
@@ -1,9 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class SmallFireball extends Projectile {
 	const NETWORK_ID = 94;
diff --git a/src/pocketmine/entity/Snake.php b/src/pocketmine/entity/Snake.php
index 890666b7186..319a08134a2 100644
--- a/src/pocketmine/entity/Snake.php
+++ b/src/pocketmine/entity/Snake.php
@@ -21,12 +21,12 @@
  *
 */
 
-use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageByChildEntityEvent;
-use pocketmine\network\protocol\EntityEventPacket;
-use pocketmine\Server;
+use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\network\protocol\AnimatePacket;
+use pocketmine\network\protocol\EntityEventPacket;
+use pocketmine\Server;
 
 class Snake extends Entity{
 	// Have fun guessing why
diff --git a/src/pocketmine/entity/SnowGolem.php b/src/pocketmine/entity/SnowGolem.php
index a9de30ab9ba..ad32fddaa47 100644
--- a/src/pocketmine/entity/SnowGolem.php
+++ b/src/pocketmine/entity/SnowGolem.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class SnowGolem extends Animal{
     const NETWORK_ID = 21;
diff --git a/src/pocketmine/entity/Spider.php b/src/pocketmine/entity/Spider.php
index 8bb43eb8757..f54f027d2ac 100644
--- a/src/pocketmine/entity/Spider.php
+++ b/src/pocketmine/entity/Spider.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Spider extends Monster{
     const NETWORK_ID = 35;
diff --git a/src/pocketmine/entity/Stray.php b/src/pocketmine/entity/Stray.php
index b939421700c..8ce021a542b 100644
--- a/src/pocketmine/entity/Stray.php
+++ b/src/pocketmine/entity/Stray.php
@@ -4,9 +4,8 @@
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityExplodeEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\nbt\tag\IntTag;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Stray extends Monster implements ProjectileSource{
     const NETWORK_ID = 46;
diff --git a/src/pocketmine/entity/ThrownEnderPearl.php b/src/pocketmine/entity/ThrownEnderPearl.php
index 6d56da44651..d50aa95fffb 100644
--- a/src/pocketmine/entity/ThrownEnderPearl.php
+++ b/src/pocketmine/entity/ThrownEnderPearl.php
@@ -1,18 +1,16 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
-use pocketmine\entity\{Entity, Projectile};
+use pocketmine\event\entity\EntityDamageEvent;
+use pocketmine\event\entity\EntityTeleportEvent;
 use pocketmine\level\format\Chunk;
-use pocketmine\level\particle\Particle;
 use pocketmine\level\particle\GenericParticle;
+use pocketmine\level\particle\Particle;
 use pocketmine\level\sound\GenericSound;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\network\Network;
 use pocketmine\network\protocol\AddEntityPacket;
 use pocketmine\network\protocol\LevelEventPacket;
-use pocketmine\event\entity\EntityDamageEvent;
-use pocketmine\event\entity\EntityTeleportEvent;
+use pocketmine\Player;
 
 class ThrownEnderPearl extends Projectile{
 	const NETWORK_ID = 87;
diff --git a/src/pocketmine/entity/ThrownExpBottle.php b/src/pocketmine/entity/ThrownExpBottle.php
index ea52910f1f8..1cd8e9526a6 100644
--- a/src/pocketmine/entity/ThrownExpBottle.php
+++ b/src/pocketmine/entity/ThrownExpBottle.php
@@ -3,8 +3,8 @@
 
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class ThrownExpBottle extends Projectile{
 	const NETWORK_ID = 68;
diff --git a/src/pocketmine/entity/ThrownPotion.php b/src/pocketmine/entity/ThrownPotion.php
index 16723252ddc..8e1baf1e779 100644
--- a/src/pocketmine/entity/ThrownPotion.php
+++ b/src/pocketmine/entity/ThrownPotion.php
@@ -6,15 +6,11 @@
 use pocketmine\item\Potion;
 use pocketmine\level\format\Chunk;
 use pocketmine\level\particle\DestroyBlockParticle;
-use pocketmine\level\particle\GenericParticle;
 use pocketmine\level\particle\ItemBreakParticle;
-use pocketmine\level\particle\Particle;
 use pocketmine\level\particle\SpellParticle;
-use pocketmine\level\sound\GenericSound;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\ShortTag;
 use pocketmine\network\protocol\AddEntityPacket;
-use pocketmine\network\protocol\LevelEventPacket;
 use pocketmine\Player;
 
 class ThrownPotion extends Projectile {
diff --git a/src/pocketmine/entity/TripoidCamera.php b/src/pocketmine/entity/TripoidCamera.php
index 66243e280c1..4d46fc1805b 100644
--- a/src/pocketmine/entity/TripoidCamera.php
+++ b/src/pocketmine/entity/TripoidCamera.php
@@ -2,11 +2,10 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
-use pocketmine\nbt\tag\IntTag;
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class TripoidCamera extends Snake{
     const NETWORK_ID = 62;
diff --git a/src/pocketmine/entity/Witch.php b/src/pocketmine/entity/Witch.php
index 7230cd8b145..331104e6f1a 100644
--- a/src/pocketmine/entity/Witch.php
+++ b/src/pocketmine/entity/Witch.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Witch extends Monster implements ProjectileSource{
     const NETWORK_ID = 45;
diff --git a/src/pocketmine/entity/Wither.php b/src/pocketmine/entity/Wither.php
index c675aa713cb..c32f4902c8e 100644
--- a/src/pocketmine/entity/Wither.php
+++ b/src/pocketmine/entity/Wither.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Wither extends Monster implements ProjectileSource{
     const NETWORK_ID = 52;
diff --git a/src/pocketmine/entity/WitherSkeleton.php b/src/pocketmine/entity/WitherSkeleton.php
index 083dbe53dbb..df3d949d864 100644
--- a/src/pocketmine/entity/WitherSkeleton.php
+++ b/src/pocketmine/entity/WitherSkeleton.php
@@ -2,11 +2,9 @@
 namespace pocketmine\entity;
 
 use pocketmine\event\entity\EntityDamageByEntityEvent;
-use pocketmine\event\entity\EntityExplodeEvent;
 use pocketmine\item\Item as ItemItem;
-use pocketmine\nbt\tag\IntTag;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class WitherSkeleton extends Monster implements ProjectileSource{
     const NETWORK_ID = 48;
diff --git a/src/pocketmine/entity/WitherSkull.php b/src/pocketmine/entity/WitherSkull.php
index f49bf9162ef..c0b9d82114f 100644
--- a/src/pocketmine/entity/WitherSkull.php
+++ b/src/pocketmine/entity/WitherSkull.php
@@ -3,9 +3,8 @@
 
 use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
-use pocketmine\item\Item as ItemItem;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class WitherSkull extends Entity{
 	const NETWORK_ID = 89;
diff --git a/src/pocketmine/entity/Wolf.php b/src/pocketmine/entity/Wolf.php
index 1301deda09b..3882d3e0b06 100644
--- a/src/pocketmine/entity/Wolf.php
+++ b/src/pocketmine/entity/Wolf.php
@@ -1,8 +1,8 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class Wolf extends Animal implements Tameable,Colorable{
 	const NETWORK_ID = 14;
diff --git a/src/pocketmine/entity/ZombieHorse.php b/src/pocketmine/entity/ZombieHorse.php
index 21735213fe0..927950167c6 100644
--- a/src/pocketmine/entity/ZombieHorse.php
+++ b/src/pocketmine/entity/ZombieHorse.php
@@ -2,8 +2,8 @@
 namespace pocketmine\entity;
 
 use pocketmine\item\Item as ItemItem;
-use pocketmine\Player;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class ZombieHorse extends Animal /*implements Rideable*/{
     const NETWORK_ID = 27;
diff --git a/src/pocketmine/entity/ZombieVillager.php b/src/pocketmine/entity/ZombieVillager.php
index c66192761fd..1ff1155ace7 100644
--- a/src/pocketmine/entity/ZombieVillager.php
+++ b/src/pocketmine/entity/ZombieVillager.php
@@ -1,9 +1,9 @@
 <?php
 namespace pocketmine\entity;
 
-use pocketmine\Player;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\network\protocol\AddEntityPacket;
+use pocketmine\Player;
 
 class ZombieVillager extends Zombie{
 	const NETWORK_ID = 44;