diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 1ad293fbe..d7c1ba591 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -1050,7 +1050,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 
 	protected function getCreativeBlock(Item $item){
 		foreach(Block::$creative as $i => $d){
-			if($d[0] === $item->getID() and $d[1] === $item->getDamage()){
+			if($d[0] === $item->getId() and $d[1] === $item->getDamage()){
 				return $i;
 			}
 		}
@@ -1241,11 +1241,11 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 
 						$pk = new TakeItemEntityPacket();
 						$pk->eid = 0;
-						$pk->target = $entity->getID();
+						$pk->target = $entity->getId();
 						$this->dataPacket($pk);
 						$pk = new TakeItemEntityPacket();
-						$pk->eid = $this->getID();
-						$pk->target = $entity->getID();
+						$pk->eid = $this->getId();
+						$pk->target = $entity->getId();
 						Server::broadcastPacket($entity->getViewers(), $pk);
 						$this->inventory->addItem(clone $item, $this);
 						$entity->kill();
@@ -1264,7 +1264,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 								continue;
 							}
 
-							switch($item->getID()){
+							switch($item->getId()){
 								case Item::WOOD:
 									$this->awardAchievement("mineWood");
 									break;
@@ -1275,11 +1275,11 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 
 							$pk = new TakeItemEntityPacket();
 							$pk->eid = 0;
-							$pk->target = $entity->getID();
+							$pk->target = $entity->getId();
 							$this->dataPacket($pk);
 							$pk = new TakeItemEntityPacket();
-							$pk->eid = $this->getID();
-							$pk->target = $entity->getID();
+							$pk->eid = $this->getId();
+							$pk->target = $entity->getId();
 							Server::broadcastPacket($entity->getViewers(), $pk);
 							$this->inventory->addItem(clone $item, $this);
 							$entity->kill();
@@ -1592,7 +1592,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 					}else{
 						$this->inventory->setHeldItemSlot($packet->slot); //set Air
 					}
-				}elseif(!isset($item) or $slot === -1 or $item->getID() !== $packet->item or $item->getDamage() !== $packet->meta){ // packet error or not implemented
+				}elseif(!isset($item) or $slot === -1 or $item->getId() !== $packet->item or $item->getDamage() !== $packet->meta){ // packet error or not implemented
 					$this->inventory->sendContents($this);
 					break;
 				}elseif($this->isCreative()){
@@ -1637,7 +1637,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 						if($this->level->useItemOn($blockVector, $item, $packet->face, $packet->fx, $packet->fy, $packet->fz, $this) === true){
 							break;
 						}
-					}elseif($this->inventory->getItemInHand()->getID() !== $packet->item or (($damage = $this->inventory->getItemInHand()->getDamage()) !== $packet->meta and $damage !== null)){
+					}elseif($this->inventory->getItemInHand()->getId() !== $packet->item or (($damage = $this->inventory->getItemInHand()->getDamage()) !== $packet->meta and $damage !== null)){
 						$this->inventory->sendHeldItem($this);
 					}else{
 						$item = $this->inventory->getItemInHand();
@@ -1658,7 +1658,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 					$pk->x = $target->x;
 					$pk->y = $target->y;
 					$pk->z = $target->z;
-					$pk->block = $target->getID();
+					$pk->block = $target->getId();
 					$pk->meta = $target->getDamage();
 					$this->dataPacket($pk);
 
@@ -1666,14 +1666,14 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 					$pk->x = $block->x;
 					$pk->y = $block->y;
 					$pk->z = $block->z;
-					$pk->block = $block->getID();
+					$pk->block = $block->getId();
 					$pk->meta = $block->getDamage();
 					$this->dataPacket($pk);
 					break;
 				}elseif($packet->face === 0xff){
 					if($this->isCreative()){
 						$item = $this->inventory->getItemInHand();
-					}elseif($this->inventory->getItemInHand()->getID() !== $packet->item or (($damage = $this->inventory->getItemInHand()->getDamage()) !== $packet->meta and $damage !== null)){
+					}elseif($this->inventory->getItemInHand()->getId() !== $packet->item or (($damage = $this->inventory->getItemInHand()->getDamage()) !== $packet->meta and $damage !== null)){
 						$this->inventory->sendHeldItem($this);
 						break;
 					}else{
@@ -1690,7 +1690,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 						break;
 					}
 
-					if($item->getID() === Item::SNOWBALL){
+					if($item->getId() === Item::SNOWBALL){
 						$nbt = new Compound("", [
 							"Pos" => new Enum("Pos", [
 								new Double("", $this->x),
@@ -1740,7 +1740,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 
 				switch($packet->action){
 					case 5: //Shot arrow
-						if($this->inventory->getItemInHand()->getID() === Item::BOW){
+						if($this->inventory->getItemInHand()->getId() === Item::BOW){
 							$bow = $this->inventory->getItemInHand();
 							if($this->isSurvival()){
 								if(!$this->inventory->contains(Item::get(Item::ARROW, 0, 1))){
@@ -1841,7 +1841,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 				$pk->x = $target->x;
 				$pk->y = $target->y;
 				$pk->z = $target->z;
-				$pk->block = $target->getID();
+				$pk->block = $target->getId();
 				$pk->meta = $target->getDamage();
 				$this->dataPacket($pk);
 
@@ -1907,7 +1907,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 					];
 
 					$damage = [
-						EntityDamageEvent::MODIFIER_BASE => isset($damageTable[$item->getID()]) ? $damageTable[$item->getID()] : 1,
+						EntityDamageEvent::MODIFIER_BASE => isset($damageTable[$item->getId()]) ? $damageTable[$item->getId()] : 1,
 					];
 
 					if($this->distance($target) > 8){
@@ -1943,8 +1943,8 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 						];
 						$points = 0;
 						foreach($target->getInventory()->getArmorContents() as $index => $i){
-							if(isset($armorValues[$i->getID()])){
-								$points += $armorValues[$i->getID()];
+							if(isset($armorValues[$i->getId()])){
+								$points += $armorValues[$i->getId()];
 							}
 						}
 
@@ -1987,7 +1987,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 				}
 
 				$pk = new AnimatePacket();
-				$pk->eid = $this->getID();
+				$pk->eid = $this->getId();
 				$pk->action = $ev->getAnimationType();
 				Server::broadcastPacket($this->getViewers(), $pk);
 				break;
@@ -2053,7 +2053,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 							//Item::RAW_FISH => 2,
 						];
 						$slot = $this->inventory->getItemInHand();
-						if($this->getHealth() < 20 and isset($items[$slot->getID()])){
+						if($this->getHealth() < 20 and isset($items[$slot->getId()])){
 							$this->server->getPluginManager()->callEvent($ev = new PlayerItemConsumeEvent($this, $slot));
 							if($ev->isCancelled()){
 								$this->inventory->sendContents($this);
@@ -2064,10 +2064,10 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 							$pk->eid = 0;
 							$pk->event = 9;
 							$this->dataPacket($pk);
-							$pk->eid = $this->getID();
+							$pk->eid = $this->getId();
 							Server::broadcastPacket($this->getViewers(), $pk);
 
-							$amount = $items[$slot->getID()];
+							$amount = $items[$slot->getId()];
 							$this->server->getPluginManager()->callEvent($ev = new EntityRegainHealthEvent($this, $amount, EntityRegainHealthEvent::CAUSE_EATING));
 							if(!$ev->isCancelled()){
 								$this->heal($ev->getAmount(), $ev);
@@ -2075,7 +2075,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 
 							--$slot->count;
 							$this->inventory->setItemInHand($slot, $this);
-							if($slot->getID() === Item::MUSHROOM_STEW or $slot->getID() === Item::BEETROOT_SOUP){
+							if($slot->getId() === Item::MUSHROOM_STEW or $slot->getId() === Item::BEETROOT_SOUP){
 								$this->inventory->addItem(Item::get(Item::BOWL, 0, 1), $this);
 							}
 						}
@@ -2206,7 +2206,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 						$inv = $ts->getInventory();
 						if($inv instanceof FurnaceInventory){
 							if($ts->getSlot() === 2){
-								switch($inv->getResult()->getID()){
+								switch($inv->getResult()->getId()){
 									case Item::IRON_INGOT:
 										$this->awardAchievement("acquireIron");
 										break;
@@ -2227,7 +2227,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 						}
 
 						if($craftingGroup->execute()){
-							switch($craftingGroup->getResult()->getID()){
+							switch($craftingGroup->getResult()->getId()){
 								case Item::WORKBENCH:
 									$this->awardAchievement("buildWorkBench");
 									break;
diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index d3841d570..777429bca 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -944,7 +944,7 @@ class Server{
 	 */
 	public function unloadLevel(Level $level, $forceUnload = false){
 		if($level->unload($forceUnload) === true){
-			unset($this->levels[$level->getID()]);
+			unset($this->levels[$level->getId()]);
 
 			return true;
 		}
@@ -995,7 +995,7 @@ class Server{
 			return false;
 		}
 
-		$this->levels[$level->getID()] = $level;
+		$this->levels[$level->getId()] = $level;
 
 		$level->initLevel();
 
@@ -1130,7 +1130,7 @@ class Server{
 		$provider::generate($path, $name, $seed, $generator, $options);
 
 		$level = new Level($this, $name, $path, $provider);
-		$this->levels[$level->getID()] = $level;
+		$this->levels[$level->getId()] = $level;
 
 		$level->initLevel();
 
diff --git a/src/pocketmine/block/Bed.php b/src/pocketmine/block/Bed.php
index cbda3fa09..7b0e83025 100644
--- a/src/pocketmine/block/Bed.php
+++ b/src/pocketmine/block/Bed.php
@@ -79,13 +79,13 @@ class Bed extends Transparent{
 		if(($this->meta & 0x08) === 0x08){ //This is the Top part of bed
 			$b = $this;
 		}else{ //Bottom Part of Bed
-			if($blockNorth->getID() === $this->id and ($blockNorth->meta & 0x08) === 0x08){
+			if($blockNorth->getId() === $this->id and ($blockNorth->meta & 0x08) === 0x08){
 				$b = $blockNorth;
-			}elseif($blockSouth->getID() === $this->id and ($blockSouth->meta & 0x08) === 0x08){
+			}elseif($blockSouth->getId() === $this->id and ($blockSouth->meta & 0x08) === 0x08){
 				$b = $blockSouth;
-			}elseif($blockEast->getID() === $this->id and ($blockEast->meta & 0x08) === 0x08){
+			}elseif($blockEast->getId() === $this->id and ($blockEast->meta & 0x08) === 0x08){
 				$b = $blockEast;
-			}elseif($blockWest->getID() === $this->id and ($blockWest->meta & 0x08) === 0x08){
+			}elseif($blockWest->getId() === $this->id and ($blockWest->meta & 0x08) === 0x08){
 				$b = $blockWest;
 			}else{
 				if($player instanceof Player){
@@ -138,23 +138,23 @@ class Bed extends Transparent{
 		$blockWest = $this->getSide(4);
 
 		if(($this->meta & 0x08) === 0x08){ //This is the Top part of bed
-			if($blockNorth->getID() === $this->id and $blockNorth->meta !== 0x08){ //Checks if the block ID and meta are right
+			if($blockNorth->getId() === $this->id and $blockNorth->meta !== 0x08){ //Checks if the block ID and meta are right
 				$this->getLevel()->setBlock($blockNorth, new Air(), true, true);
-			}elseif($blockSouth->getID() === $this->id and $blockSouth->meta !== 0x08){
+			}elseif($blockSouth->getId() === $this->id and $blockSouth->meta !== 0x08){
 				$this->getLevel()->setBlock($blockSouth, new Air(), true, true);
-			}elseif($blockEast->getID() === $this->id and $blockEast->meta !== 0x08){
+			}elseif($blockEast->getId() === $this->id and $blockEast->meta !== 0x08){
 				$this->getLevel()->setBlock($blockEast, new Air(), true, true);
-			}elseif($blockWest->getID() === $this->id and $blockWest->meta !== 0x08){
+			}elseif($blockWest->getId() === $this->id and $blockWest->meta !== 0x08){
 				$this->getLevel()->setBlock($blockWest, new Air(), true, true);
 			}
 		}else{ //Bottom Part of Bed
-			if($blockNorth->getID() === $this->id and ($blockNorth->meta & 0x08) === 0x08){
+			if($blockNorth->getId() === $this->id and ($blockNorth->meta & 0x08) === 0x08){
 				$this->getLevel()->setBlock($blockNorth, new Air(), true, true);
-			}elseif($blockSouth->getID() === $this->id and ($blockSouth->meta & 0x08) === 0x08){
+			}elseif($blockSouth->getId() === $this->id and ($blockSouth->meta & 0x08) === 0x08){
 				$this->getLevel()->setBlock($blockSouth, new Air(), true, true);
-			}elseif($blockEast->getID() === $this->id and ($blockEast->meta & 0x08) === 0x08){
+			}elseif($blockEast->getId() === $this->id and ($blockEast->meta & 0x08) === 0x08){
 				$this->getLevel()->setBlock($blockEast, new Air(), true, true);
-			}elseif($blockWest->getID() === $this->id and ($blockWest->meta & 0x08) === 0x08){
+			}elseif($blockWest->getId() === $this->id and ($blockWest->meta & 0x08) === 0x08){
 				$this->getLevel()->setBlock($blockWest, new Air(), true, true);
 			}
 		}
diff --git a/src/pocketmine/block/Cactus.php b/src/pocketmine/block/Cactus.php
index 88fcb4984..000de4e78 100644
--- a/src/pocketmine/block/Cactus.php
+++ b/src/pocketmine/block/Cactus.php
@@ -72,7 +72,7 @@ class Cactus extends Transparent{
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
 			$down = $this->getSide(0);
-			if($down->getID() !== self::SAND and $down->getID() !== self::CACTUS){
+			if($down->getId() !== self::SAND and $down->getId() !== self::CACTUS){
 				$this->getLevel()->useBreakOn($this);
 			}else{
 				for($side = 2; $side <= 5; ++$side){
@@ -83,11 +83,11 @@ class Cactus extends Transparent{
 				}
 			}
 		}elseif($type === Level::BLOCK_UPDATE_RANDOM){
-			if($this->getSide(0)->getID() !== self::CACTUS){
+			if($this->getSide(0)->getId() !== self::CACTUS){
 				if($this->meta == 0x0F){
 					for($y = 1; $y < 3; ++$y){
 						$b = $this->getLevel()->getBlock(new Vector3($this->x, $this->y + $y, $this->z));
-						if($b->getID() === self::AIR){
+						if($b->getId() === self::AIR){
 							Server::getInstance()->getPluginManager()->callEvent($ev = new BlockGrowEvent($b, new Cactus()));
 							if(!$ev->isCancelled()){
 								$this->getLevel()->setBlock($b, $ev->getNewState(), true);
@@ -108,7 +108,7 @@ class Cactus extends Transparent{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() === self::SAND or $down->getID() === self::CACTUS){
+		if($down->getId() === self::SAND or $down->getId() === self::CACTUS){
 			$block0 = $this->getSide(2);
 			$block1 = $this->getSide(3);
 			$block2 = $this->getSide(4);
diff --git a/src/pocketmine/block/Cake.php b/src/pocketmine/block/Cake.php
index 82d704ce7..667f6411c 100644
--- a/src/pocketmine/block/Cake.php
+++ b/src/pocketmine/block/Cake.php
@@ -64,7 +64,7 @@ class Cake extends Transparent{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() !== self::AIR){
+		if($down->getId() !== self::AIR){
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
@@ -75,7 +75,7 @@ class Cake extends Transparent{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			if($this->getSide(0)->getID() === self::AIR){ //Replace with common break method
+			if($this->getSide(0)->getId() === self::AIR){ //Replace with common break method
 				$this->getLevel()->setBlock($this, new Air(), true);
 
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/Carpet.php b/src/pocketmine/block/Carpet.php
index 92eb3d073..563a6b471 100644
--- a/src/pocketmine/block/Carpet.php
+++ b/src/pocketmine/block/Carpet.php
@@ -74,7 +74,7 @@ class Carpet extends Flowable{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() !== self::AIR){
+		if($down->getId() !== self::AIR){
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
@@ -85,7 +85,7 @@ class Carpet extends Flowable{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			if($this->getSide(0)->getID() === self::AIR){
+			if($this->getSide(0)->getId() === self::AIR){
 				$this->getLevel()->useBreakOn($this);
 
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/Crops.php b/src/pocketmine/block/Crops.php
index 29a8783de..2ee4d5458 100644
--- a/src/pocketmine/block/Crops.php
+++ b/src/pocketmine/block/Crops.php
@@ -35,7 +35,7 @@ abstract class Crops extends Flowable{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() === self::FARMLAND){
+		if($down->getId() === self::FARMLAND){
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
@@ -46,7 +46,7 @@ abstract class Crops extends Flowable{
 
 
 	public function onActivate(Item $item, Player $player = null){
-		if($item->getID() === Item::DYE and $item->getDamage() === 0x0F){ //Bonemeal
+		if($item->getId() === Item::DYE and $item->getDamage() === 0x0F){ //Bonemeal
 			$block = clone $this;
 			$block->meta += mt_rand(2, 5);
 			if($block->meta > 7){
diff --git a/src/pocketmine/block/Dandelion.php b/src/pocketmine/block/Dandelion.php
index 052e15ac4..9b8a6266e 100644
--- a/src/pocketmine/block/Dandelion.php
+++ b/src/pocketmine/block/Dandelion.php
@@ -40,7 +40,7 @@ class Dandelion extends Flowable{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() === 2 or $down->getID() === 3 or $down->getID() === 60){
+		if($down->getId() === 2 or $down->getId() === 3 or $down->getId() === 60){
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
diff --git a/src/pocketmine/block/Door.php b/src/pocketmine/block/Door.php
index 9928eefb4..c1f062248 100644
--- a/src/pocketmine/block/Door.php
+++ b/src/pocketmine/block/Door.php
@@ -205,7 +205,7 @@ abstract class Door extends Transparent{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			if($this->getSide(0)->getID() === self::AIR){ //Replace with common break method
+			if($this->getSide(0)->getId() === self::AIR){ //Replace with common break method
 				$this->getLevel()->setBlock($this, new Air(), false);
 				if($this->getSide(1) instanceof Door){
 					$this->getLevel()->setBlock($this->getSide(1), new Air(), false);
@@ -235,7 +235,7 @@ abstract class Door extends Transparent{
 			$next = $this->getSide($face[(($direction + 2) % 4)]);
 			$next2 = $this->getSide($face[$direction]);
 			$metaUp = 0x08;
-			if($next->getID() === $this->id or ($next2->isTransparent() === false and $next->isTransparent() === true)){ //Door hinge
+			if($next->getId() === $this->id or ($next2->isTransparent() === false and $next->isTransparent() === true)){ //Door hinge
 				$metaUp |= 0x01;
 			}
 
@@ -251,12 +251,12 @@ abstract class Door extends Transparent{
 	public function onBreak(Item $item){
 		if(($this->meta & 0x08) === 0x08){
 			$down = $this->getSide(0);
-			if($down->getID() === $this->id){
+			if($down->getId() === $this->id){
 				$this->getLevel()->setBlock($down, new Air(), true);
 			}
 		}else{
 			$up = $this->getSide(1);
-			if($up->getID() === $this->id){
+			if($up->getId() === $this->id){
 				$this->getLevel()->setBlock($up, new Air(), true);
 			}
 		}
@@ -268,12 +268,12 @@ abstract class Door extends Transparent{
 	public function onActivate(Item $item, Player $player = null){
 		if(($this->meta & 0x08) === 0x08){ //Top
 			$down = $this->getSide(0);
-			if($down->getID() === $this->id){
+			if($down->getId() === $this->id){
 				$meta = $down->getDamage() ^ 0x04;
 				$this->getLevel()->setBlock($down, Block::get($this->id, $meta), true);
 				$players = $this->getLevel()->getUsingChunk($this->x >> 4, $this->z >> 4);
 				if($player instanceof Player){
-					unset($players[$player->getID()]);
+					unset($players[$player->getId()]);
 				}
 				$pk = new LevelEventPacket();
 				$pk->x = $this->x;
@@ -292,7 +292,7 @@ abstract class Door extends Transparent{
 			$this->getLevel()->setBlock($this, $this, true);
 			$players = $this->getLevel()->getUsingChunk($this->x >> 4, $this->z >> 4);
 			if($player instanceof Player){
-				unset($players[$player->getID()]);
+				unset($players[$player->getId()]);
 			}
 			$pk = new LevelEventPacket();
 			$pk->x = $this->x;
diff --git a/src/pocketmine/block/Fallable.php b/src/pocketmine/block/Fallable.php
index 59d184b15..5a7417531 100644
--- a/src/pocketmine/block/Fallable.php
+++ b/src/pocketmine/block/Fallable.php
@@ -43,7 +43,7 @@ abstract class Fallable extends Solid{
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
 			$down = $this->getSide(0);
-			if($down->getID() === self::AIR or ($down instanceof Liquid)){
+			if($down->getId() === self::AIR or ($down instanceof Liquid)){
 				$fall = Entity::createEntity("FallingSand", $this->getLevel()->getChunk($this->x >> 4, $this->z >> 4), new Compound("", [
 					"Pos" => new Enum("Pos", [
 						new Double("", $this->x + 0.5),
@@ -59,7 +59,7 @@ abstract class Fallable extends Solid{
 						new Float("", 0),
 						new Float("", 0)
 					]),
-					"TileID" => new Int("TileID", $this->getID()),
+					"TileID" => new Int("TileID", $this->getId()),
 					"Data" => new Byte("Data", $this->getDamage()),
 				]));
 
diff --git a/src/pocketmine/block/Fire.php b/src/pocketmine/block/Fire.php
index 74644b156..5cf90ca7c 100644
--- a/src/pocketmine/block/Fire.php
+++ b/src/pocketmine/block/Fire.php
@@ -76,7 +76,7 @@ class Fire extends Flowable{
 		if($type === Level::BLOCK_UPDATE_NORMAL){
 			for($s = 0; $s <= 5; ++$s){
 				$side = $this->getSide($s);
-				if($side->getID() !== self::AIR and !($side instanceof Liquid)){
+				if($side->getId() !== self::AIR and !($side instanceof Liquid)){
 					return false;
 				}
 			}
@@ -84,7 +84,7 @@ class Fire extends Flowable{
 
 			return Level::BLOCK_UPDATE_NORMAL;
 		}elseif($type === Level::BLOCK_UPDATE_RANDOM){
-			if($this->getSide(0)->getID() !== self::NETHERRACK){
+			if($this->getSide(0)->getId() !== self::NETHERRACK){
 				$this->getLevel()->setBlock($this, new Air(), true);
 
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/Grass.php b/src/pocketmine/block/Grass.php
index 46fbc1728..fbe2bf44d 100644
--- a/src/pocketmine/block/Grass.php
+++ b/src/pocketmine/block/Grass.php
@@ -63,7 +63,7 @@ class Grass extends Solid{
 			$y = mt_rand($this->y - 2, $this->y + 2);
 			$z = mt_rand($this->z - 1, $this->z + 1);
 			$block = $this->getLevel()->getBlock(new Vector3($x, $y, $z));
-			if($block->getID() === Block::DIRT){
+			if($block->getId() === Block::DIRT){
 				if($block->getSide(1) instanceof Transparent){
 					Server::getInstance()->getPluginManager()->callEvent($ev = new BlockSpreadEvent($block, $this, new Grass()));
 					if(!$ev->isCancelled()){
@@ -75,7 +75,7 @@ class Grass extends Solid{
 	}
 
 	public function onActivate(Item $item, Player $player = null){
-		if($item->getID() === Item::DYE and $item->getDamage() === 0x0F){
+		if($item->getId() === Item::DYE and $item->getDamage() === 0x0F){
 			$item->count--;
 			TallGrassObject::growGrass($this->getLevel(), $this, new Random(mt_rand()), 8, 2);
 
diff --git a/src/pocketmine/block/Ladder.php b/src/pocketmine/block/Ladder.php
index 475bf2f71..e4f76e434 100644
--- a/src/pocketmine/block/Ladder.php
+++ b/src/pocketmine/block/Ladder.php
@@ -123,7 +123,7 @@ class Ladder extends Transparent{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			/*if($this->getSide(0)->getID() === self::AIR){ //Replace with common break method
+			/*if($this->getSide(0)->getId() === self::AIR){ //Replace with common break method
 				Server::getInstance()->api->entity->drop($this, Item::get(LADDER, 0, 1));
 				$this->getLevel()->setBlock($this, new Air(), true, true, true);
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/Leaves.php b/src/pocketmine/block/Leaves.php
index cb3f16fa8..9e9c8cbbf 100644
--- a/src/pocketmine/block/Leaves.php
+++ b/src/pocketmine/block/Leaves.php
@@ -61,11 +61,11 @@ class Leaves extends Transparent{
 		if(isset($visited[$index])){
 			return false;
 		}
-		if($pos->getID() === self::WOOD){
+		if($pos->getId() === self::WOOD){
 			return true;
-		}elseif($pos->getID() === self::LEAVES and $distance < 3){
+		}elseif($pos->getId() === self::LEAVES and $distance < 3){
 			$visited[$index] = true;
-			$down = $pos->getSide(0)->getID();
+			$down = $pos->getSide(0)->getId();
 			if($down === Item::WOOD){
 				return true;
 			}
diff --git a/src/pocketmine/block/Leaves2.php b/src/pocketmine/block/Leaves2.php
index d74f9858d..969467a2b 100644
--- a/src/pocketmine/block/Leaves2.php
+++ b/src/pocketmine/block/Leaves2.php
@@ -49,11 +49,11 @@ class Leaves2 extends Leaves{
 		if(isset($visited[$index])){
 			return false;
 		}
-		if($pos->getID() === self::WOOD2){
+		if($pos->getId() === self::WOOD2){
 			return true;
-		}elseif($pos->getID() === self::LEAVES2 and $distance < 3){
+		}elseif($pos->getId() === self::LEAVES2 and $distance < 3){
 			$visited[$index] = true;
-			$down = $pos->getSide(0)->getID();
+			$down = $pos->getSide(0)->getId();
 			if($down === Item::WOOD2){
 				return true;
 			}
diff --git a/src/pocketmine/block/Liquid.php b/src/pocketmine/block/Liquid.php
index 623aaabc1..0d06ba185 100644
--- a/src/pocketmine/block/Liquid.php
+++ b/src/pocketmine/block/Liquid.php
@@ -63,7 +63,7 @@ abstract class Liquid extends Transparent{
 			$pos = $this->getLevel()->getBlock($pos);
 		}
 
-		if($pos->getID() !== $this->getID()){
+		if($pos->getId() !== $this->getId()){
 			return -1;
 		}else{
 			return $pos->getDamage();
@@ -75,7 +75,7 @@ abstract class Liquid extends Transparent{
 			$pos = $this->getLevel()->getBlock($pos);
 		}
 
-		if($pos->getID() !== $this->getID()){
+		if($pos->getId() !== $this->getId()){
 			return -1;
 		}
 
@@ -291,7 +291,7 @@ abstract class Liquid extends Transparent{
 
 	private function flowIntoBlock(Block $block, $newFlowDecay){
 		if($block->canBeFlowedInto()){
-			if($block->getID() > 0){
+			if($block->getId() > 0){
 				$this->getLevel()->useBreakOn($block);
 			}
 
diff --git a/src/pocketmine/block/MelonStem.php b/src/pocketmine/block/MelonStem.php
index 646b674a5..f5a7c132d 100644
--- a/src/pocketmine/block/MelonStem.php
+++ b/src/pocketmine/block/MelonStem.php
@@ -58,13 +58,13 @@ class MelonStem extends Crops{
 				}else{
 					for($side = 2; $side <= 5; ++$side){
 						$b = $this->getSide($side);
-						if($b->getID() === self::MELON_BLOCK){
+						if($b->getId() === self::MELON_BLOCK){
 							return Level::BLOCK_UPDATE_RANDOM;
 						}
 					}
 					$side = $this->getSide(mt_rand(2, 5));
 					$d = $side->getSide(0);
-					if($side->getID() === self::AIR and ($d->getID() === self::FARMLAND or $d->getID() === self::GRASS or $d->getID() === self::DIRT)){
+					if($side->getId() === self::AIR and ($d->getId() === self::FARMLAND or $d->getId() === self::GRASS or $d->getId() === self::DIRT)){
 						Server::getInstance()->getPluginManager()->callEvent($ev = new BlockGrowEvent($side, new Melon()));
 						if(!$ev->isCancelled()){
 							$this->getLevel()->setBlock($side, $ev->getNewState(), true);
diff --git a/src/pocketmine/block/Mycelium.php b/src/pocketmine/block/Mycelium.php
index 272ace086..3f11285f5 100644
--- a/src/pocketmine/block/Mycelium.php
+++ b/src/pocketmine/block/Mycelium.php
@@ -56,7 +56,7 @@ class Mycelium extends Solid{
 			$y = mt_rand($this->y - 2, $this->y + 2);
 			$z = mt_rand($this->z - 1, $this->z + 1);
 			$block = $this->getLevel()->getBlock(new Vector3($x, $y, $z));
-			if($block->getID() === Block::DIRT){
+			if($block->getId() === Block::DIRT){
 				if($block->getSide(1) instanceof Transparent){
 					Server::getInstance()->getPluginManager()->callEvent($ev = new BlockSpreadEvent($block, $this, new Mycelium()));
 					if(!$ev->isCancelled()){
diff --git a/src/pocketmine/block/Poppy.php b/src/pocketmine/block/Poppy.php
index e55697660..9e6bd757f 100644
--- a/src/pocketmine/block/Poppy.php
+++ b/src/pocketmine/block/Poppy.php
@@ -40,7 +40,7 @@ class Poppy extends Flowable{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() === 2 or $down->getID() === 3 or $down->getID() === 60){
+		if($down->getId() === 2 or $down->getId() === 3 or $down->getId() === 60){
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
diff --git a/src/pocketmine/block/PumpkinStem.php b/src/pocketmine/block/PumpkinStem.php
index 68890c352..faecd8cb7 100644
--- a/src/pocketmine/block/PumpkinStem.php
+++ b/src/pocketmine/block/PumpkinStem.php
@@ -58,13 +58,13 @@ class PumpkinStem extends Crops{
 				}else{
 					for($side = 2; $side <= 5; ++$side){
 						$b = $this->getSide($side);
-						if($b->getID() === self::PUMPKIN){
+						if($b->getId() === self::PUMPKIN){
 							return Level::BLOCK_UPDATE_RANDOM;
 						}
 					}
 					$side = $this->getSide(mt_rand(2, 5));
 					$d = $side->getSide(0);
-					if($side->getID() === self::AIR and ($d->getID() === self::FARMLAND or $d->getID() === self::GRASS or $d->getID() === self::DIRT)){
+					if($side->getId() === self::AIR and ($d->getId() === self::FARMLAND or $d->getId() === self::GRASS or $d->getId() === self::DIRT)){
 						Server::getInstance()->getPluginManager()->callEvent($ev = new BlockGrowEvent($side, new Pumpkin()));
 						if(!$ev->isCancelled()){
 							$this->getLevel()->setBlock($side, $ev->getNewState(), true);
diff --git a/src/pocketmine/block/Sapling.php b/src/pocketmine/block/Sapling.php
index d06c56183..133c8ea60 100644
--- a/src/pocketmine/block/Sapling.php
+++ b/src/pocketmine/block/Sapling.php
@@ -62,7 +62,7 @@ class Sapling extends Flowable{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() === self::GRASS or $down->getID() === self::DIRT or $down->getID() === self::FARMLAND){
+		if($down->getId() === self::GRASS or $down->getId() === self::DIRT or $down->getId() === self::FARMLAND){
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
@@ -72,7 +72,7 @@ class Sapling extends Flowable{
 	}
 
 	public function onActivate(Item $item, Player $player = null){
-		if($item->getID() === Item::DYE and $item->getDamage() === 0x0F){ //Bonemeal
+		if($item->getId() === Item::DYE and $item->getDamage() === 0x0F){ //Bonemeal
 			//TODO: change log type
 			Tree::growTree($this->getLevel(), $this->x, $this->y, $this->z, new Random(mt_rand()), $this->meta & 0x07);
 			if(($player->gamemode & 0x01) === 0){
diff --git a/src/pocketmine/block/SignPost.php b/src/pocketmine/block/SignPost.php
index 9e4bfb277..add716556 100644
--- a/src/pocketmine/block/SignPost.php
+++ b/src/pocketmine/block/SignPost.php
@@ -76,7 +76,7 @@ class SignPost extends Transparent{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			if($this->getSide(0)->getID() === self::AIR){
+			if($this->getSide(0)->getId() === self::AIR){
 				$this->getLevel()->useBreakOn($this);
 
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/Slab.php b/src/pocketmine/block/Slab.php
index 882917ecf..25f4a8355 100644
--- a/src/pocketmine/block/Slab.php
+++ b/src/pocketmine/block/Slab.php
@@ -77,11 +77,11 @@ class Slab extends Transparent{
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$this->meta &= 0x07;
 		if($face === 0){
-			if($target->getID() === self::SLAB and ($target->getDamage() & 0x08) === 0x08 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
+			if($target->getId() === self::SLAB and ($target->getDamage() & 0x08) === 0x08 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($target, Block::get(Item::DOUBLE_SLAB, $this->meta), true);
 
 				return true;
-			}elseif($block->getID() === self::SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
+			}elseif($block->getId() === self::SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_SLAB, $this->meta), true);
 
 				return true;
@@ -89,18 +89,18 @@ class Slab extends Transparent{
 				$this->meta |= 0x08;
 			}
 		}elseif($face === 1){
-			if($target->getID() === self::SLAB and ($target->getDamage() & 0x08) === 0 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
+			if($target->getId() === self::SLAB and ($target->getDamage() & 0x08) === 0 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($target, Block::get(Item::DOUBLE_SLAB, $this->meta), true);
 
 				return true;
-			}elseif($block->getID() === self::SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
+			}elseif($block->getId() === self::SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_SLAB, $this->meta), true);
 
 				return true;
 			}
 			//TODO: check for collision
 		}else{
-			if($block->getID() === self::SLAB){
+			if($block->getId() === self::SLAB){
 				if(($block->getDamage() & 0x07) === ($this->meta & 0x07)){
 					$this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_SLAB, $this->meta), true);
 
@@ -115,7 +115,7 @@ class Slab extends Transparent{
 			}
 		}
 
-		if($block->getID() === self::SLAB and ($target->getDamage() & 0x07) !== ($this->meta & 0x07)){
+		if($block->getId() === self::SLAB and ($target->getDamage() & 0x07) !== ($this->meta & 0x07)){
 			return false;
 		}
 		$this->getLevel()->setBlock($block, $this, true, true);
diff --git a/src/pocketmine/block/SnowLayer.php b/src/pocketmine/block/SnowLayer.php
index b817545ca..803e044b0 100644
--- a/src/pocketmine/block/SnowLayer.php
+++ b/src/pocketmine/block/SnowLayer.php
@@ -59,7 +59,7 @@ class SnowLayer extends Flowable{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			if($this->getSide(0)->getID() === self::AIR){ //Replace with common break method
+			if($this->getSide(0)->getId() === self::AIR){ //Replace with common break method
 				$this->getLevel()->setBlock($this, new Air(), true);
 
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/StoneWall.php b/src/pocketmine/block/StoneWall.php
index b74610706..51cdcd97e 100644
--- a/src/pocketmine/block/StoneWall.php
+++ b/src/pocketmine/block/StoneWall.php
@@ -79,7 +79,7 @@ class StoneWall extends Transparent{
 	}
 
 	public function canConnect(Block $block){
-		return ($block->getID() !== self::COBBLE_WALL and $block->getID() !== self::FENCE_GATE) ? $block->isSolid() : true;
+		return ($block->getId() !== self::COBBLE_WALL and $block->getId() !== self::FENCE_GATE) ? $block->isSolid() : true;
 	}
 
 }
\ No newline at end of file
diff --git a/src/pocketmine/block/Sugarcane.php b/src/pocketmine/block/Sugarcane.php
index f69b9cee1..f2ecdcfa6 100644
--- a/src/pocketmine/block/Sugarcane.php
+++ b/src/pocketmine/block/Sugarcane.php
@@ -48,11 +48,11 @@ class Sugarcane extends Flowable{
 	}
 
 	public function onActivate(Item $item, Player $player = null){
-		if($item->getID() === Item::DYE and $item->getDamage() === 0x0F){ //Bonemeal
-			if($this->getSide(0)->getID() !== self::SUGARCANE_BLOCK){
+		if($item->getId() === Item::DYE and $item->getDamage() === 0x0F){ //Bonemeal
+			if($this->getSide(0)->getId() !== self::SUGARCANE_BLOCK){
 				for($y = 1; $y < 3; ++$y){
 					$b = $this->getLevel()->getBlock(new Vector3($this->x, $this->y + $y, $this->z));
-					if($b->getID() === self::AIR){
+					if($b->getId() === self::AIR){
 						Server::getInstance()->getPluginManager()->callEvent($ev = new BlockGrowEvent($b, new Sugarcane()));
 						if(!$ev->isCancelled()){
 							$this->getLevel()->setBlock($b, $ev->getNewState(), true);
@@ -76,17 +76,17 @@ class Sugarcane extends Flowable{
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
 			$down = $this->getSide(0);
-			if($down->isTransparent() === true and $down->getID() !== self::SUGARCANE_BLOCK){
+			if($down->isTransparent() === true and $down->getId() !== self::SUGARCANE_BLOCK){
 				$this->getLevel()->useBreakOn($this);
 
 				return Level::BLOCK_UPDATE_NORMAL;
 			}
 		}elseif($type === Level::BLOCK_UPDATE_RANDOM){
-			if($this->getSide(0)->getID() !== self::SUGARCANE_BLOCK){
+			if($this->getSide(0)->getId() !== self::SUGARCANE_BLOCK){
 				if($this->meta === 0x0F){
 					for($y = 1; $y < 3; ++$y){
 						$b = $this->getLevel()->getBlock(new Vector3($this->x, $this->y + $y, $this->z));
-						if($b->getID() === self::AIR){
+						if($b->getId() === self::AIR){
 							$this->getLevel()->setBlock($b, new Sugarcane(), true);
 							break;
 						}
@@ -107,11 +107,11 @@ class Sugarcane extends Flowable{
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$down = $this->getSide(0);
-		if($down->getID() === self::SUGARCANE_BLOCK){
+		if($down->getId() === self::SUGARCANE_BLOCK){
 			$this->getLevel()->setBlock($block, new Sugarcane(), true);
 
 			return true;
-		}elseif($down->getID() === self::GRASS or $down->getID() === self::DIRT or $down->getID() === self::SAND){
+		}elseif($down->getId() === self::GRASS or $down->getId() === self::DIRT or $down->getId() === self::SAND){
 			$block0 = $down->getSide(2);
 			$block1 = $down->getSide(3);
 			$block2 = $down->getSide(4);
diff --git a/src/pocketmine/block/TNT.php b/src/pocketmine/block/TNT.php
index 89d186601..052c9a6a1 100644
--- a/src/pocketmine/block/TNT.php
+++ b/src/pocketmine/block/TNT.php
@@ -52,7 +52,7 @@ class TNT extends Solid{
     }
 
 	public function onActivate(Item $item, Player $player = null){
-		if($item->getID() === Item::FLINT_STEEL){
+		if($item->getId() === Item::FLINT_STEEL){
 			$item->useOn($this);
 			$this->getLevel()->setBlock($this, new Air(), true);
 
diff --git a/src/pocketmine/block/Thin.php b/src/pocketmine/block/Thin.php
index a3313ed43..c756e5ad7 100644
--- a/src/pocketmine/block/Thin.php
+++ b/src/pocketmine/block/Thin.php
@@ -76,7 +76,7 @@ abstract class Thin extends Transparent{
 
 
 	public function canConnect(Block $block){
-		return $block->isSolid() or $block->getID() === $this->getID() or $block->getID() === self::GLASS_PANE or $block->getID() === self::GLASS;
+		return $block->isSolid() or $block->getId() === $this->getId() or $block->getId() === self::GLASS_PANE or $block->getId() === self::GLASS;
 	}
 
 }
\ No newline at end of file
diff --git a/src/pocketmine/block/Torch.php b/src/pocketmine/block/Torch.php
index f10d8c6d8..7e8e23b86 100644
--- a/src/pocketmine/block/Torch.php
+++ b/src/pocketmine/block/Torch.php
@@ -55,7 +55,7 @@ class Torch extends Flowable{
 				0 => 0,
 			];
 
-			if($this->getSide($faces[$side])->isTransparent()=== true and !($side === 0 and $this->getSide(0)->getID() === self::FENCE)){
+			if($this->getSide($faces[$side])->isTransparent()=== true and !($side === 0 and $this->getSide(0)->getId() === self::FENCE)){
 				$this->getLevel()->useBreakOn($this);
 
 				return Level::BLOCK_UPDATE_NORMAL;
@@ -78,7 +78,7 @@ class Torch extends Flowable{
 			$this->getLevel()->setBlock($block, $this, true, true);
 
 			return true;
-		}elseif($this->getSide(0)->isTransparent() === false or $this->getSide(0)->getID() === self::FENCE){
+		}elseif($this->getSide(0)->isTransparent() === false or $this->getSide(0)->getId() === self::FENCE){
 			$this->meta = 0;
 			$this->getLevel()->setBlock($block, $this, true, true);
 
diff --git a/src/pocketmine/block/Trapdoor.php b/src/pocketmine/block/Trapdoor.php
index eeb63ff82..688303b2a 100644
--- a/src/pocketmine/block/Trapdoor.php
+++ b/src/pocketmine/block/Trapdoor.php
@@ -115,7 +115,7 @@ class Trapdoor extends Transparent{
 	}
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
-		if(($target->isTransparent() === false or $target->getID() === self::SLAB) and $face !== 0 and $face !== 1){
+		if(($target->isTransparent() === false or $target->getId() === self::SLAB) and $face !== 0 and $face !== 1){
 			$faces = [
 				2 => 0,
 				3 => 1,
diff --git a/src/pocketmine/block/Vine.php b/src/pocketmine/block/Vine.php
index 640bd273c..5eb97c3bd 100644
--- a/src/pocketmine/block/Vine.php
+++ b/src/pocketmine/block/Vine.php
@@ -163,7 +163,7 @@ class Vine extends Transparent{
 
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
-			/*if($this->getSide(0)->getID() === self::AIR){ //Replace with common break method
+			/*if($this->getSide(0)->getId() === self::AIR){ //Replace with common break method
 				Server::getInstance()->api->entity->drop($this, Item::get(LADDER, 0, 1));
 				$this->getLevel()->setBlock($this, new Air(), true, true, true);
 				return Level::BLOCK_UPDATE_NORMAL;
diff --git a/src/pocketmine/block/WoodSlab.php b/src/pocketmine/block/WoodSlab.php
index 567ca209d..0f3fd39c1 100644
--- a/src/pocketmine/block/WoodSlab.php
+++ b/src/pocketmine/block/WoodSlab.php
@@ -77,11 +77,11 @@ class WoodSlab extends Transparent{
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
 		$this->meta &= 0x07;
 		if($face === 0){
-			if($target->getID() === self::WOOD_SLAB and ($target->getDamage() & 0x08) === 0x08 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
+			if($target->getId() === self::WOOD_SLAB and ($target->getDamage() & 0x08) === 0x08 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($target, Block::get(Item::DOUBLE_WOOD_SLAB, $this->meta), true);
 
 				return true;
-			}elseif($block->getID() === self::WOOD_SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
+			}elseif($block->getId() === self::WOOD_SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_WOOD_SLAB, $this->meta), true);
 
 				return true;
@@ -89,17 +89,17 @@ class WoodSlab extends Transparent{
 				$this->meta |= 0x08;
 			}
 		}elseif($face === 1){
-			if($target->getID() === self::WOOD_SLAB and ($target->getDamage() & 0x08) === 0 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
+			if($target->getId() === self::WOOD_SLAB and ($target->getDamage() & 0x08) === 0 and ($target->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($target, Block::get(Item::DOUBLE_WOOD_SLAB, $this->meta), true);
 
 				return true;
-			}elseif($block->getID() === self::WOOD_SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
+			}elseif($block->getId() === self::WOOD_SLAB and ($block->getDamage() & 0x07) === ($this->meta & 0x07)){
 				$this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_WOOD_SLAB, $this->meta), true);
 
 				return true;
 			}
 		}else{ //TODO: collision
-			if($block->getID() === self::WOOD_SLAB){
+			if($block->getId() === self::WOOD_SLAB){
 				if(($block->getDamage() & 0x07) === ($this->meta & 0x07)){
 					$this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_WOOD_SLAB, $this->meta), true);
 
@@ -114,7 +114,7 @@ class WoodSlab extends Transparent{
 			}
 		}
 		
-		if($block->getID() === self::WOOD_SLAB and ($target->getDamage() & 0x07) !== ($this->meta & 0x07)){
+		if($block->getId() === self::WOOD_SLAB and ($target->getDamage() & 0x07) !== ($this->meta & 0x07)){
 			return false;
 		}
 		$this->getLevel()->setBlock($block, $this, true, true);
diff --git a/src/pocketmine/command/defaults/GiveCommand.php b/src/pocketmine/command/defaults/GiveCommand.php
index a0989f056..c6c941d85 100644
--- a/src/pocketmine/command/defaults/GiveCommand.php
+++ b/src/pocketmine/command/defaults/GiveCommand.php
@@ -64,7 +64,7 @@ class GiveCommand extends VanillaCommand{
 
 				return true;
 			}
-			if($item->getID() == 0){
+			if($item->getId() == 0){
 				$sender->sendMessage(TextFormat::RED . "There is no item called " . $args[1] . ".");
 
 				return true;
@@ -78,7 +78,7 @@ class GiveCommand extends VanillaCommand{
 			return true;
 		}
 
-		Command::broadcastCommandMessage($sender, "Gave " . $player->getName() . " " . $item->getCount() . " of " . $item->getName() . " (" . $item->getID() . ":" . $item->getDamage() . ")");
+		Command::broadcastCommandMessage($sender, "Gave " . $player->getName() . " " . $item->getCount() . " of " . $item->getName() . " (" . $item->getId() . ":" . $item->getDamage() . ")");
 
 		return true;
 	}
diff --git a/src/pocketmine/entity/Arrow.php b/src/pocketmine/entity/Arrow.php
index 734865ea4..43d799d3a 100644
--- a/src/pocketmine/entity/Arrow.php
+++ b/src/pocketmine/entity/Arrow.php
@@ -65,7 +65,7 @@ class Arrow extends Projectile{
 	public function spawnTo(Player $player){
 		$pk = new AddEntityPacket();
 		$pk->type = Arrow::NETWORK_ID;
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->x = $this->x;
 		$pk->y = $this->y;
 		$pk->z = $this->z;
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index 4f6f15c4d..38fcaca4d 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -312,8 +312,8 @@ abstract class Entity extends Location implements Metadatable{
 	 * @param Player $player
 	 */
 	public function spawnTo(Player $player){
-		if(!isset($this->hasSpawned[$player->getID()]) and isset($player->usedChunks[Level::chunkHash($this->chunk->getX(), $this->chunk->getZ())])){
-			$this->hasSpawned[$player->getID()] = $player;
+		if(!isset($this->hasSpawned[$player->getId()]) and isset($player->usedChunks[Level::chunkHash($this->chunk->getX(), $this->chunk->getZ())])){
+			$this->hasSpawned[$player->getId()] = $player;
 		}
 	}
 
@@ -347,11 +347,11 @@ abstract class Entity extends Location implements Metadatable{
 	 * @param Player $player
 	 */
 	public function despawnFrom(Player $player){
-		if(isset($this->hasSpawned[$player->getID()])){
+		if(isset($this->hasSpawned[$player->getId()])){
 			$pk = new RemoveEntityPacket();
 			$pk->eid = $this->id;
 			$player->dataPacket($pk);
-			unset($this->hasSpawned[$player->getID()]);
+			unset($this->hasSpawned[$player->getId()]);
 		}
 	}
 
@@ -1117,10 +1117,10 @@ abstract class Entity extends Location implements Metadatable{
 			if(!$this->justCreated){
 				$newChunk = $this->level->getUsingChunk($this->x >> 4, $this->z >> 4);
 				foreach($this->hasSpawned as $player){
-					if(!isset($newChunk[$player->getID()])){
+					if(!isset($newChunk[$player->getId()])){
 						$this->despawnFrom($player);
 					}else{
-						unset($newChunk[$player->getID()]);
+						unset($newChunk[$player->getId()]);
 					}
 				}
 				foreach($newChunk as $player){
@@ -1273,7 +1273,7 @@ abstract class Entity extends Location implements Metadatable{
 	}
 
 	public function __toString(){
-		return (new \ReflectionClass($this))->getShortName() . "(" . $this->getID() . ")";
+		return (new \ReflectionClass($this))->getShortName() . "(" . $this->getId() . ")";
 	}
 
 }
diff --git a/src/pocketmine/entity/FallingSand.php b/src/pocketmine/entity/FallingSand.php
index db5a83955..262fe83c6 100644
--- a/src/pocketmine/entity/FallingSand.php
+++ b/src/pocketmine/entity/FallingSand.php
@@ -88,7 +88,7 @@ class FallingSand extends Entity{
 		if(!$this->dead){
 			if($this->ticksLived === 1){
 				$block = $this->level->getBlock($pos = (new Vector3($this->x, $this->y, $this->z))->floor());
-				if($block->getID() != $this->blockId){
+				if($block->getId() != $this->blockId){
 					$this->kill();
 					return true;
 				}
@@ -151,7 +151,7 @@ class FallingSand extends Entity{
 	public function spawnTo(Player $player){
 		$pk = new AddEntityPacket();
 		$pk->type = FallingSand::NETWORK_ID;
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->x = $this->x;
 		$pk->y = $this->y;
 		$pk->z = $this->z;
diff --git a/src/pocketmine/entity/Human.php b/src/pocketmine/entity/Human.php
index d82f67d60..64cfe7f51 100644
--- a/src/pocketmine/entity/Human.php
+++ b/src/pocketmine/entity/Human.php
@@ -99,13 +99,13 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 				$hotbarSlot = $this->inventory->getHotbarSlotIndex($slot);
 				if($hotbarSlot !== -1){
 					$item = $this->inventory->getItem($hotbarSlot);
-					if($item->getID() !== 0 and $item->getCount() > 0){
+					if($item->getId() !== 0 and $item->getCount() > 0){
 						$this->namedtag->Inventory[$slot] = new Compound(false, [
 							new Byte("Count", $item->getCount()),
 							new Short("Damage", $item->getDamage()),
 							new Byte("Slot", $slot),
 							new Byte("TrueSlot", $hotbarSlot),
-							new Short("id", $item->getID()),
+							new Short("id", $item->getId()),
 						]);
 						continue;
 					}
@@ -128,19 +128,19 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 					new Byte("Count", $item->getCount()),
 					new Short("Damage", $item->getDamage()),
 					new Byte("Slot", $slot),
-					new Short("id", $item->getID()),
+					new Short("id", $item->getId()),
 				]);
 			}
 
 			//Armor
 			for($slot = 100; $slot < 104; ++$slot){
 				$item = $this->inventory->getItem($this->inventory->getSize() + $slot - 100);
-				if($item instanceof ItemItem and $item->getID() !== ItemItem::AIR){
+				if($item instanceof ItemItem and $item->getId() !== ItemItem::AIR){
 					$this->namedtag->Inventory[$slot] = new Compound(false, [
 						new Byte("Count", $item->getCount()),
 						new Short("Damage", $item->getDamage()),
 						new Byte("Slot", $slot),
-						new Short("id", $item->getID()),
+						new Short("id", $item->getId()),
 					]);
 				}
 			}
@@ -148,8 +148,8 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 	}
 
 	public function spawnTo(Player $player){
-		if($player !== $this and !isset($this->hasSpawned[$player->getID()])){
-			$this->hasSpawned[$player->getID()] = $player;
+		if($player !== $this and !isset($this->hasSpawned[$player->getId()])){
+			$this->hasSpawned[$player->getId()] = $player;
 
 			$pk = new AddPlayerPacket();
 			$pk->clientID = 0;
@@ -158,14 +158,14 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 			}else{
 				$pk->username = $this->nameTag;
 			}
-			$pk->eid = $this->getID();
+			$pk->eid = $this->getId();
 			$pk->x = $this->x;
 			$pk->y = $this->y;
 			$pk->z = $this->z;
 			$pk->yaw = $this->yaw;
 			$pk->pitch = $this->pitch;
 			$item = $this->getInventory()->getItemInHand();
-			$pk->item = $item->getID();
+			$pk->item = $item->getId();
 			$pk->meta = $item->getDamage();
 			$pk->metadata = $this->getData();
 			$player->dataPacket($pk);
@@ -177,12 +177,12 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 	}
 
 	public function despawnFrom(Player $player){
-		if(isset($this->hasSpawned[$player->getID()])){
+		if(isset($this->hasSpawned[$player->getId()])){
 			$pk = new RemovePlayerPacket();
 			$pk->eid = $this->id;
 			$pk->clientID = 0;
 			$player->dataPacket($pk);
-			unset($this->hasSpawned[$player->getID()]);
+			unset($this->hasSpawned[$player->getId()]);
 		}
 	}
 
diff --git a/src/pocketmine/entity/Item.php b/src/pocketmine/entity/Item.php
index 11aae4f05..d20cebf29 100644
--- a/src/pocketmine/entity/Item.php
+++ b/src/pocketmine/entity/Item.php
@@ -147,7 +147,7 @@ class Item extends Entity{
 	public function saveNBT(){
 		parent::saveNBT();
 		$this->namedtag->Item = new Compound("Item", [
-			"id" => new Short("id", $this->item->getID()),
+			"id" => new Short("id", $this->item->getId()),
 			"Damage" => new Short("Damage", $this->item->getDamage()),
 			"Count" => new Byte("Count", $this->item->getCount())
 		]);
@@ -226,7 +226,7 @@ class Item extends Entity{
 
 	public function spawnTo(Player $player){
 		$pk = new AddItemEntityPacket();
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->x = $this->x;
 		$pk->y = $this->y;
 		$pk->z = $this->z;
diff --git a/src/pocketmine/entity/Living.php b/src/pocketmine/entity/Living.php
index 8d65c8fda..bbfe94c5d 100644
--- a/src/pocketmine/entity/Living.php
+++ b/src/pocketmine/entity/Living.php
@@ -94,7 +94,7 @@ abstract class Living extends Entity implements Damageable{
 		}
 
 		$pk = new EntityEventPacket();
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->event = 2; //Ouch!
 		Server::broadcastPacket($this->hasSpawned, $pk);
 		$this->setLastDamageCause($source);
@@ -213,7 +213,7 @@ abstract class Living extends Entity implements Damageable{
 				--$nextIndex;
 			}
 
-			$id = $block->getID();
+			$id = $block->getId();
 
 			if($transparent === null){
 				if($id !== 0){
diff --git a/src/pocketmine/entity/PrimedTNT.php b/src/pocketmine/entity/PrimedTNT.php
index 2cce4877b..e4df9d954 100644
--- a/src/pocketmine/entity/PrimedTNT.php
+++ b/src/pocketmine/entity/PrimedTNT.php
@@ -139,7 +139,7 @@ class PrimedTNT extends Entity implements Explosive{
 	public function spawnTo(Player $player){
 		$pk = new AddEntityPacket();
 		$pk->type = PrimedTNT::NETWORK_ID;
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->x = $this->x;
 		$pk->y = $this->y;
 		$pk->z = $this->z;
diff --git a/src/pocketmine/entity/Snowball.php b/src/pocketmine/entity/Snowball.php
index 1f735847c..ba59a141a 100644
--- a/src/pocketmine/entity/Snowball.php
+++ b/src/pocketmine/entity/Snowball.php
@@ -64,7 +64,7 @@ class Snowball extends Projectile{
 	public function spawnTo(Player $player){
 		$pk = new AddEntityPacket();
 		$pk->type = Snowball::NETWORK_ID;
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->x = $this->x;
 		$pk->y = $this->y;
 		$pk->z = $this->z;
diff --git a/src/pocketmine/entity/Villager.php b/src/pocketmine/entity/Villager.php
index 80dacb6c0..5c6f8b74c 100644
--- a/src/pocketmine/entity/Villager.php
+++ b/src/pocketmine/entity/Villager.php
@@ -53,7 +53,7 @@ class Villager extends Creature implements NPC, Ageable{
 
 	public function spawnTo(Player $player){
 		$pk = new AddMobPacket();
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->type = Villager::NETWORK_ID;
 		$pk->x = $this->x;
 		$pk->y = $this->y;
diff --git a/src/pocketmine/entity/Zombie.php b/src/pocketmine/entity/Zombie.php
index caf98921b..1b3d7fb27 100644
--- a/src/pocketmine/entity/Zombie.php
+++ b/src/pocketmine/entity/Zombie.php
@@ -41,7 +41,7 @@ class Zombie extends Monster{
 	public function spawnTo(Player $player){
 
 		$pk = new AddMobPacket();
-		$pk->eid = $this->getID();
+		$pk->eid = $this->getId();
 		$pk->type = Zombie::NETWORK_ID;
 		$pk->x = $this->x;
 		$pk->y = $this->y;
diff --git a/src/pocketmine/inventory/BaseInventory.php b/src/pocketmine/inventory/BaseInventory.php
index 2249298cd..5025fd5b7 100644
--- a/src/pocketmine/inventory/BaseInventory.php
+++ b/src/pocketmine/inventory/BaseInventory.php
@@ -124,7 +124,7 @@ abstract class BaseInventory implements Inventory{
 		$item = clone $item;
 		if($index < 0 or $index >= $this->size){
 			return false;
-		}elseif($item->getID() === 0 or $item->getCount() <= 0){
+		}elseif($item->getId() === 0 or $item->getCount() <= 0){
 			return $this->clear($index, $source);
 		}
 
@@ -195,7 +195,7 @@ abstract class BaseInventory implements Inventory{
 
 	public function firstEmpty(){
 		for($i = 0; $i < $this->size; ++$i){
-			if($this->getItem($i)->getID() === Item::AIR){
+			if($this->getItem($i)->getId() === Item::AIR){
 				return $i;
 			}
 		}
@@ -212,7 +212,7 @@ abstract class BaseInventory implements Inventory{
 				if(($diff = $slot->getMaxStackSize() - $slot->getCount()) > 0){
 					$item->setCount($item->getCount() - $diff);
 				}
-			}elseif($slot->getID() === Item::AIR){
+			}elseif($slot->getId() === Item::AIR){
 				$item->setCount($item->getCount() - $this->getMaxStackSize());
 			}
 
@@ -345,7 +345,7 @@ abstract class BaseInventory implements Inventory{
 				}
 				$item = $ev->getNewItem();
 			}
-			if($item->getID() !== Item::AIR){
+			if($item->getId() !== Item::AIR){
 				$this->slots[$index] = clone $item;
 			}else{
 				unset($this->slots[$index]);
diff --git a/src/pocketmine/inventory/CraftingManager.php b/src/pocketmine/inventory/CraftingManager.php
index 1dbdca2e3..d5e039188 100644
--- a/src/pocketmine/inventory/CraftingManager.php
+++ b/src/pocketmine/inventory/CraftingManager.php
@@ -291,9 +291,9 @@ class CraftingManager{
 	}
 
 	public function sort(Item $i1, Item $i2){
-		if($i1->getID() > $i2->getID()){
+		if($i1->getId() > $i2->getId()){
 			return 1;
-		}elseif($i1->getID() < $i2->getID()){
+		}elseif($i1->getId() < $i2->getId()){
 			return -1;
 		}elseif($i1->getDamage() > $i2->getDamage()){
 			return 1;
@@ -329,10 +329,10 @@ class CraftingManager{
 	 * @return FurnaceRecipe
 	 */
 	public function matchFurnaceRecipe(Item $input){
-		if(isset($this->furnaceRecipes[$input->getID() . ":" . $input->getDamage()])){
-			return $this->furnaceRecipes[$input->getID() . ":" . $input->getDamage()];
-		}elseif(isset($this->furnaceRecipes[$input->getID() . ":?"])){
-			return $this->furnaceRecipes[$input->getID() . ":?"];
+		if(isset($this->furnaceRecipes[$input->getId() . ":" . $input->getDamage()])){
+			return $this->furnaceRecipes[$input->getId() . ":" . $input->getDamage()];
+		}elseif(isset($this->furnaceRecipes[$input->getId() . ":?"])){
+			return $this->furnaceRecipes[$input->getId() . ":?"];
 		}
 
 		return null;
@@ -355,9 +355,9 @@ class CraftingManager{
 		$ingredients = $recipe->getIngredientList();
 		usort($ingredients, [$this, "sort"]);
 		foreach($ingredients as $item){
-			$hash .= $item->getID() . ":" . ($item->getDamage() === null ? "?" : $item->getDamage()) . "x" . $item->getCount() . ",";
+			$hash .= $item->getId() . ":" . ($item->getDamage() === null ? "?" : $item->getDamage()) . "x" . $item->getCount() . ",";
 		}
-		$this->recipeLookup[$result->getID() . ":" . $result->getDamage()][$hash] = $recipe;
+		$this->recipeLookup[$result->getId() . ":" . $result->getDamage()][$hash] = $recipe;
 	}
 
 	/**
@@ -365,7 +365,7 @@ class CraftingManager{
 	 */
 	public function registerFurnaceRecipe(FurnaceRecipe $recipe){
 		$input = $recipe->getInput();
-		$this->furnaceRecipes[$input->getID() . ":" . ($input->getDamage() === null ? "?" : $input->getDamage())] = $recipe;
+		$this->furnaceRecipes[$input->getId() . ":" . ($input->getDamage() === null ? "?" : $input->getDamage())] = $recipe;
 	}
 
 	/**
@@ -379,7 +379,7 @@ class CraftingManager{
 		if(!($result instanceof Item)){
 			return false;
 		}
-		$k = $result->getID() . ":" . $result->getDamage();
+		$k = $result->getId() . ":" . $result->getDamage();
 
 		if(!isset($this->recipeLookup[$k])){
 			return false;
@@ -390,7 +390,7 @@ class CraftingManager{
 		$inputCount = 0;
 		foreach($input as $item){
 			$inputCount += $item->getCount();
-			$hash .= $item->getID() . ":" . ($item->getDamage() === null ? "?" : $item->getDamage()) . "x" . $item->getCount() . ",";
+			$hash .= $item->getId() . ":" . ($item->getDamage() === null ? "?" : $item->getDamage()) . "x" . $item->getCount() . ",";
 		}
 		if(!isset($this->recipeLookup[$k][$hash])){
 			$hasRecipe = null;
diff --git a/src/pocketmine/inventory/PlayerInventory.php b/src/pocketmine/inventory/PlayerInventory.php
index d3c8a2ccc..49f5420fc 100644
--- a/src/pocketmine/inventory/PlayerInventory.php
+++ b/src/pocketmine/inventory/PlayerInventory.php
@@ -68,8 +68,8 @@ class PlayerInventory extends BaseInventory{
 			$item = $this->getItemInHand();
 
 			$pk = new PlayerEquipmentPacket();
-			$pk->eid = $this->getHolder()->getID();
-			$pk->item = $item->getID();
+			$pk->eid = $this->getHolder()->getId();
+			$pk->item = $item->getId();
 			$pk->meta = $item->getDamage();
 			$pk->slot = $this->getHeldItemIndex();
 
@@ -128,8 +128,8 @@ class PlayerInventory extends BaseInventory{
 		$item = $this->getItemInHand();
 
 		$pk = new PlayerEquipmentPacket();
-		$pk->eid = $this->getHolder()->getID();
-		$pk->item = $item->getID();
+		$pk->eid = $this->getHolder()->getId();
+		$pk->item = $item->getId();
 		$pk->meta = $item->getDamage();
 		$pk->slot = 0;
 		$pk->isEncoded = true;
@@ -202,7 +202,7 @@ class PlayerInventory extends BaseInventory{
 	public function setItem($index, Item $item, $source = null){
 		if($index < 0 or $index >= $this->size){
 			return false;
-		}elseif($item->getID() === 0 or $item->getCount() <= 0){
+		}elseif($item->getId() === 0 or $item->getCount() <= 0){
 			return $this->clear($index, $source);
 		}
 
@@ -265,7 +265,7 @@ class PlayerInventory extends BaseInventory{
 				}
 				$item = $ev->getNewItem();
 			}
-			if($item->getID() !== Item::AIR){
+			if($item->getId() !== Item::AIR){
 				$this->slots[$index] = clone $item;
 			}else{
 				unset($this->slots[$index]);
@@ -308,15 +308,15 @@ class PlayerInventory extends BaseInventory{
 		$slots = [];
 
 		foreach($armor as $i => $slot){
-			if($slot->getID() === Item::AIR){
+			if($slot->getId() === Item::AIR){
 				$slots[$i] = 255;
 			}else{
-				$slots[$i] = $slot->getID();
+				$slots[$i] = $slot->getId();
 			}
 		}
 
 		$pk = new PlayerArmorEquipmentPacket();
-		$pk->eid = $this->getHolder()->getID();
+		$pk->eid = $this->getHolder()->getId();
 		$pk->slots = $slots;
 		$pk->encode();
 		$pk->isEncoded = true;
@@ -346,7 +346,7 @@ class PlayerInventory extends BaseInventory{
 				$items[$i] = Item::get(Item::AIR, null, 0);
 			}
 
-			if($items[$i]->getID() === Item::AIR){
+			if($items[$i]->getId() === Item::AIR){
 				$this->clear($this->getSize() + $i);
 			}else{
 				$this->setItem($this->getSize() + $i, $items[$i]);
@@ -369,15 +369,15 @@ class PlayerInventory extends BaseInventory{
 		$slots = [];
 
 		foreach($armor as $i => $slot){
-			if($slot->getID() === Item::AIR){
+			if($slot->getId() === Item::AIR){
 				$slots[$i] = 255;
 			}else{
-				$slots[$i] = $slot->getID();
+				$slots[$i] = $slot->getId();
 			}
 		}
 
 		$pk = new PlayerArmorEquipmentPacket();
-		$pk->eid = $this->getHolder()->getID();
+		$pk->eid = $this->getHolder()->getId();
 		$pk->slots = $slots;
 		$pk->encode();
 		$pk->isEncoded = true;
diff --git a/src/pocketmine/inventory/SimpleTransactionGroup.php b/src/pocketmine/inventory/SimpleTransactionGroup.php
index 71edb330e..b3f52b27d 100644
--- a/src/pocketmine/inventory/SimpleTransactionGroup.php
+++ b/src/pocketmine/inventory/SimpleTransactionGroup.php
@@ -93,7 +93,7 @@ class SimpleTransactionGroup implements TransactionGroup{
 	 */
 	protected function matchItems(array &$needItems, array &$haveItems){
 		foreach($this->transactions as $key => $ts){
-			if($ts->getTargetItem()->getID() !== Item::AIR){
+			if($ts->getTargetItem()->getId() !== Item::AIR){
 				$needItems[] = $ts->getTargetItem();
 			}
 			$checkSourceItem = $ts->getInventory()->getItem($ts->getSlot());
@@ -101,7 +101,7 @@ class SimpleTransactionGroup implements TransactionGroup{
 			if(!$checkSourceItem->equals($sourceItem, true) or $sourceItem->getCount() !== $checkSourceItem->getCount()){
 				return false;
 			}
-			if($sourceItem->getID() !== Item::AIR){
+			if($sourceItem->getId() !== Item::AIR){
 				$haveItems[] = $sourceItem;
 			}
 		}
diff --git a/src/pocketmine/item/Bucket.php b/src/pocketmine/item/Bucket.php
index d2aa8434f..04863381c 100644
--- a/src/pocketmine/item/Bucket.php
+++ b/src/pocketmine/item/Bucket.php
@@ -41,7 +41,7 @@ class Bucket extends Item{
 		if($targetBlock instanceof Air){
 			if($target instanceof Liquid and $target->getDamage() === 0){
 				$result = clone $this;
-				$result->setDamage($target->getID());
+				$result->setDamage($target->getId());
 				$player->getServer()->getPluginManager()->callEvent($ev = new PlayerBucketFillEvent($player, $block, $face, $this, $result));
 				if(!$ev->isCancelled()){
 					$player->getLevel()->setBlock($target, new Air(), true, true);
diff --git a/src/pocketmine/item/FlintSteel.php b/src/pocketmine/item/FlintSteel.php
index dec19ad2b..731bb7174 100644
--- a/src/pocketmine/item/FlintSteel.php
+++ b/src/pocketmine/item/FlintSteel.php
@@ -38,7 +38,7 @@ class FlintSteel extends Tool{
 			$player->getInventory()->setItemInHand(new Item(Item::AIR, 0, 0));
 		}
 
-		if($block->getID() === self::AIR and ($target instanceof Solid)){
+		if($block->getId() === self::AIR and ($target instanceof Solid)){
 			$level->setBlock($block, new Fire(), true);
 
 			return true;
diff --git a/src/pocketmine/item/Item.php b/src/pocketmine/item/Item.php
index ffff6d1fe..4304cf30f 100644
--- a/src/pocketmine/item/Item.php
+++ b/src/pocketmine/item/Item.php
@@ -519,7 +519,7 @@ class Item{
 
 			if(defined(Item::class . "::" . strtoupper($b[0]))){
 				$item = self::get(constant(Item::class . "::" . strtoupper($b[0])), $meta);
-				if($item->getID() === self::AIR and strtoupper($b[0]) !== "AIR"){
+				if($item->getId() === self::AIR and strtoupper($b[0]) !== "AIR"){
 					$item = self::get(((int) $b[0]) & 0xFFFF, $meta);
 				}
 			}else{
@@ -656,7 +656,7 @@ class Item{
 	}
 
 	public final function equals(Item $item, $checkDamage = false){
-		return $this->id === $item->getID() and ($checkDamage === false or $this->getDamage() === $item->getDamage());
+		return $this->id === $item->getId() and ($checkDamage === false or $this->getDamage() === $item->getDamage());
 	}
 
 }
\ No newline at end of file
diff --git a/src/pocketmine/item/ItemBlock.php b/src/pocketmine/item/ItemBlock.php
index dba7bb9e3..7734961be 100644
--- a/src/pocketmine/item/ItemBlock.php
+++ b/src/pocketmine/item/ItemBlock.php
@@ -29,7 +29,7 @@ use pocketmine\block\Block;
 class ItemBlock extends Item{
 	public function __construct(Block $block, $meta = 0, $count = 1){
 		$this->block = clone $block;
-		parent::__construct($block->getID(), $block->getDamage(), $count, $block->getName());
+		parent::__construct($block->getId(), $block->getDamage(), $count, $block->getName());
 	}
 
 	public function setDamage($meta){
diff --git a/src/pocketmine/item/Painting.php b/src/pocketmine/item/Painting.php
index d2f901275..5ab5ac95d 100644
--- a/src/pocketmine/item/Painting.php
+++ b/src/pocketmine/item/Painting.php
@@ -82,7 +82,7 @@ class Painting extends Item{
 			//$e = $server->api->entity->add($level, ENTITY_OBJECT, OBJECT_PAINTING, $data);
 			//$e->spawnToAll();
 			/*if(($player->gamemode & 0x01) === 0x00){
-				$player->removeItem(Item::get($this->getID(), $this->getDamage(), 1));
+				$player->removeItem(Item::get($this->getId(), $this->getDamage(), 1));
 			}*/
 
 			return true;
diff --git a/src/pocketmine/item/Tool.php b/src/pocketmine/item/Tool.php
index 3c8f0e645..c6c08131d 100644
--- a/src/pocketmine/item/Tool.php
+++ b/src/pocketmine/item/Tool.php
@@ -46,7 +46,7 @@ abstract class Tool extends Item{
 	 */
 	public function useOn($object){
 		if($this->isHoe()){
-			if(($object instanceof Block) and ($object->getID() === self::GRASS or $object->getID() === self::DIRT)){
+			if(($object instanceof Block) and ($object->getId() === self::GRASS or $object->getId() === self::DIRT)){
 				$this->meta++;
 			}
 		}elseif(($object instanceof Entity) and !$this->isSword()){
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index b489fbb74..45e56ad9f 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -407,7 +407,7 @@ class Level implements ChunkManager, Metadatable{
 	public function useChunk($X, $Z, Player $player){
 		$index = Level::chunkHash($X, $Z);
 		$this->loadChunk($X, $Z);
-		$this->usedChunks[$index][$player->getID()] = $player;
+		$this->usedChunks[$index][$player->getId()] = $player;
 	}
 
 	/**
@@ -419,7 +419,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @param Player $player
 	 */
 	public function freeChunk($X, $Z, Player $player){
-		unset($this->usedChunks[$index = Level::chunkHash($X, $Z)][$player->getID()]);
+		unset($this->usedChunks[$index = Level::chunkHash($X, $Z)][$player->getId()]);
 		$this->unloadChunkRequest($X, $Z, true);
 	}
 
@@ -537,7 +537,7 @@ class Level implements ChunkManager, Metadatable{
 								$pk->x = $b->x;
 								$pk->y = $b->y;
 								$pk->z = $b->z;
-								$pk->block = $b->getID();
+								$pk->block = $b->getId();
 								$pk->meta = $b->getDamage();
 								Server::broadcastPacket($this->getUsingChunk($b->x >> 4, $b->z >> 4), $pk);
 							}
@@ -1046,14 +1046,14 @@ class Level implements ChunkManager, Metadatable{
 
 		unset($this->blockCache["{$pos->x}:{$pos->y}:{$pos->z}"]);
 
-		if($this->getChunk($pos->x >> 4, $pos->z >> 4, true)->setBlock($pos->x & 0x0f, $pos->y & 0x7f, $pos->z & 0x0f, $block->getID(), $block->getDamage())){
+		if($this->getChunk($pos->x >> 4, $pos->z >> 4, true)->setBlock($pos->x & 0x0f, $pos->y & 0x7f, $pos->z & 0x0f, $block->getId(), $block->getDamage())){
 			if(!($pos instanceof Position)){
 				$pos = $this->temporalPosition->setComponents($pos->x, $pos->y, $pos->z);
 			}
 			$block->position($pos);
 			$index = Level::chunkHash($pos->x >> 4, $pos->z >> 4);
 			if(ADVANCED_CACHE == true){
-				Cache::remove("world:" . $this->getID() . ":" . $index);
+				Cache::remove("world:" . $this->getId() . ":" . $index);
 			}
 
 			if($direct === true){
@@ -1061,7 +1061,7 @@ class Level implements ChunkManager, Metadatable{
 				$pk->x = $pos->x;
 				$pk->y = $pos->y;
 				$pk->z = $pos->z;
-				$pk->block = $block->getID();
+				$pk->block = $block->getId();
 				$pk->meta = $block->getDamage();
 
 				Server::broadcastPacket($this->getUsingChunk($pos->x >> 4, $pos->z >> 4), $pk);
@@ -1105,7 +1105,7 @@ class Level implements ChunkManager, Metadatable{
 	 */
 	public function dropItem(Vector3 $source, Item $item, Vector3 $motion = null, $delay = 10){
 		$motion = $motion === null ? new Vector3(lcg_value() * 0.2 - 0.1, 0.2, lcg_value() * 0.2 - 0.1) : $motion;
-		if($item->getID() > 0 and $item->getCount() > 0){
+		if($item->getId() > 0 and $item->getCount() > 0){
 			$itemEntity = Entity::createEntity("Item", $this->getChunk($source->getX() >> 4, $source->getZ() >> 4), new Compound("", [
 				"Pos" => new Enum("Pos", [
 						new Double("", $source->getX()),
@@ -1124,7 +1124,7 @@ class Level implements ChunkManager, Metadatable{
 					]),
 				"Health" => new Short("Health", 5),
 				"Item" => new Compound("Item", [
-						"id" => new Short("id", $item->getID()),
+						"id" => new Short("id", $item->getId()),
 						"Damage" => new Short("Damage", $item->getDamage()),
 						"Count" => new Byte("Count", $item->getCount())
 					]),
@@ -1189,7 +1189,7 @@ class Level implements ChunkManager, Metadatable{
 		if($level instanceof Level){
 			$above = $level->getBlock(new Vector3($target->x, $target->y + 1, $target->z));
 			if($above instanceof Block){
-				if($above->getID() === Item::FIRE){
+				if($above->getId() === Item::FIRE){
 					$level->setBlock($above, new Air(), true);
 				}
 			}
@@ -1250,7 +1250,7 @@ class Level implements ChunkManager, Metadatable{
 			return false;
 		}
 
-		if($target->getID() === Item::AIR){
+		if($target->getId() === Item::AIR){
 			return false;
 		}
 
@@ -1285,7 +1285,7 @@ class Level implements ChunkManager, Metadatable{
 		if($item->isPlaceable()){
 			$hand = $item->getBlock();
 			$hand->position($block);
-		}elseif($block->getID() === Item::FIRE){
+		}elseif($block->getId() === Item::FIRE){
 			$this->setBlock($block, new Air(), true);
 
 			return false;
@@ -1293,7 +1293,7 @@ class Level implements ChunkManager, Metadatable{
 			return false;
 		}
 
-		if(!($block->canBeReplaced() === true or ($hand->getID() === Item::SLAB and $block->getID() === Item::SLAB))){
+		if(!($block->canBeReplaced() === true or ($hand->getId() === Item::SLAB and $block->getId() === Item::SLAB))){
 			return false;
 		}
 
@@ -1338,7 +1338,7 @@ class Level implements ChunkManager, Metadatable{
 			return false;
 		}
 
-		if($hand->getID() === Item::SIGN_POST or $hand->getID() === Item::WALL_SIGN){
+		if($hand->getId() === Item::SIGN_POST or $hand->getId() === Item::WALL_SIGN){
 			$tile = Tile::createTile("Sign", $this->getChunk($block->x >> 4, $block->z >> 4), new Compound(false, [
 				"id" => new String("id", Tile::SIGN),
 				"x" => new Int("x", $block->x),
@@ -1709,7 +1709,7 @@ class Level implements ChunkManager, Metadatable{
 			$this->chunks[$index] = $chunk;
 		}
 		if(ADVANCED_CACHE == true){
-			Cache::remove("world:" . $this->getID() . ":". Level::chunkHash($x, $z));
+			Cache::remove("world:" . $this->getId() . ":". Level::chunkHash($x, $z));
 		}
 		$chunk->setChanged();
 	}
@@ -1802,7 +1802,7 @@ class Level implements ChunkManager, Metadatable{
 					continue;
 				}
 				Level::getXZ($index, $x, $z);
-				if(ADVANCED_CACHE == true and ($cache = Cache::get("world:" . $this->getID() . ":" . $index)) !== false){
+				if(ADVANCED_CACHE == true and ($cache = Cache::get("world:" . $this->getId() . ":" . $index)) !== false){
 					/** @var Player[] $players */
 					foreach($players as $player){
 						if($player->isConnected() and isset($player->usedChunks[$index])){
@@ -1830,7 +1830,7 @@ class Level implements ChunkManager, Metadatable{
 		if(isset($this->chunkSendTasks[$index])){
 
 			if(ADVANCED_CACHE == true){
-				Cache::add("world:" . $this->getID() . ":" . $index, $payload, 60);
+				Cache::add("world:" . $this->getId() . ":" . $index, $payload, 60);
 			}
 			foreach($this->chunkSendQueue[$index] as $player){
 				/** @var Player $player */
@@ -1856,14 +1856,14 @@ class Level implements ChunkManager, Metadatable{
 		}
 
 		if($entity instanceof Player){
-			unset($this->players[$entity->getID()]);
+			unset($this->players[$entity->getId()]);
 			//$this->everyoneSleeping();
 		}else{
 			$entity->kill();
 		}
 
-		unset($this->entities[$entity->getID()]);
-		unset($this->updateEntities[$entity->getID()]);
+		unset($this->entities[$entity->getId()]);
+		unset($this->updateEntities[$entity->getId()]);
 	}
 
 	/**
@@ -1876,9 +1876,9 @@ class Level implements ChunkManager, Metadatable{
 			throw new LevelException("Invalid Entity level");
 		}
 		if($entity instanceof Player){
-			$this->players[$entity->getID()] = $entity;
+			$this->players[$entity->getId()] = $entity;
 		}
-		$this->entities[$entity->getID()] = $entity;
+		$this->entities[$entity->getId()] = $entity;
 	}
 
 	/**
@@ -1890,7 +1890,7 @@ class Level implements ChunkManager, Metadatable{
 		if($tile->getLevel() !== $this){
 			throw new LevelException("Invalid Tile level");
 		}
-		$this->tiles[$tile->getID()] = $tile;
+		$this->tiles[$tile->getId()] = $tile;
 	}
 
 	/**
@@ -1903,8 +1903,8 @@ class Level implements ChunkManager, Metadatable{
 			throw new LevelException("Invalid Tile level");
 		}
 
-		unset($this->tiles[$tile->getID()]);
-		unset($this->updateTiles[$tile->getID()]);
+		unset($this->tiles[$tile->getId()]);
+		unset($this->updateTiles[$tile->getId()]);
 	}
 
 	/**
@@ -2005,7 +2005,7 @@ class Level implements ChunkManager, Metadatable{
 
 		unset($this->chunks[$index]);
 		unset($this->usedChunks[$index]);
-		Cache::remove("world:" . $this->getID() . ":$index");
+		Cache::remove("world:" . $this->getId() . ":$index");
 
 		$this->timings->doChunkUnload->stopTiming();
 
diff --git a/src/pocketmine/level/format/anvil/Anvil.php b/src/pocketmine/level/format/anvil/Anvil.php
index ffcb37f00..9a571deaa 100644
--- a/src/pocketmine/level/format/anvil/Anvil.php
+++ b/src/pocketmine/level/format/anvil/Anvil.php
@@ -66,7 +66,7 @@ class Anvil extends McRegion{
 	}
 
 	public function requestChunkTask($x, $z){
-		return new ChunkRequestTask($this, $this->getLevel()->getID(), $x, $z);
+		return new ChunkRequestTask($this, $this->getLevel()->getId(), $x, $z);
 	}
 
 	/**
diff --git a/src/pocketmine/level/format/generic/BaseFullChunk.php b/src/pocketmine/level/format/generic/BaseFullChunk.php
index 14ce8f3e8..441b517b3 100644
--- a/src/pocketmine/level/format/generic/BaseFullChunk.php
+++ b/src/pocketmine/level/format/generic/BaseFullChunk.php
@@ -226,17 +226,17 @@ abstract class BaseFullChunk implements FullChunk{
 	}
 
 	public function addEntity(Entity $entity){
-		$this->entities[$entity->getID()] = $entity;
+		$this->entities[$entity->getId()] = $entity;
 		$this->hasChanged = true;
 	}
 
 	public function removeEntity(Entity $entity){
-		unset($this->entities[$entity->getID()]);
+		unset($this->entities[$entity->getId()]);
 		$this->hasChanged = true;
 	}
 
 	public function addTile(Tile $tile){
-		$this->tiles[$tile->getID()] = $tile;
+		$this->tiles[$tile->getId()] = $tile;
 		if(isset($this->tileList[$index = (($tile->z & 0x0f) << 12) | (($tile->x & 0x0f) << 8) | ($tile->y & 0xff)]) and $this->tileList[$index] !== $tile){
 			$this->tileList[$index]->close();
 		}
@@ -245,7 +245,7 @@ abstract class BaseFullChunk implements FullChunk{
 	}
 
 	public function removeTile(Tile $tile){
-		unset($this->tiles[$tile->getID()]);
+		unset($this->tiles[$tile->getId()]);
 		unset($this->tileList[(($tile->z & 0x0f) << 12) | (($tile->x & 0x0f) << 8) | ($tile->y & 0xff)]);
 		$this->hasChanged = true;
 	}
diff --git a/src/pocketmine/level/generator/Flat.php b/src/pocketmine/level/generator/Flat.php
index 91cd97cb4..626e01c1d 100644
--- a/src/pocketmine/level/generator/Flat.php
+++ b/src/pocketmine/level/generator/Flat.php
@@ -95,7 +95,7 @@ class Flat extends Generator{
 			$b = Item::fromString($b);
 			$cnt = $matches[2][$i] === "" ? 1 : intval($matches[2][$i]);
 			for($cY = $y, $y += $cnt; $cY < $y; ++$cY){
-				$this->structure[$cY] = [$b->getID(), $b->getDamage()];
+				$this->structure[$cY] = [$b->getId(), $b->getDamage()];
 			}
 		}
 
diff --git a/src/pocketmine/level/generator/GenerationInstanceManager.php b/src/pocketmine/level/generator/GenerationInstanceManager.php
index bae2c511c..e4cb58f0d 100644
--- a/src/pocketmine/level/generator/GenerationInstanceManager.php
+++ b/src/pocketmine/level/generator/GenerationInstanceManager.php
@@ -55,14 +55,14 @@ class GenerationInstanceManager extends GenerationRequestManager{
 	 * @param array  $options
 	 */
 	public function openLevel(Level $level, $generator, array $options = []){
-		$this->generationManager->openLevel($level->getID(), $level->getSeed(), $generator, $options);
+		$this->generationManager->openLevel($level->getId(), $level->getSeed(), $generator, $options);
 	}
 
 	/**
 	 * @param Level $level
 	 */
 	public function closeLevel(Level $level){
-		$this->generationManager->closeLevel($level->getID());
+		$this->generationManager->closeLevel($level->getId());
 	}
 
 	public function addNamespace($namespace, $path){
@@ -70,7 +70,7 @@ class GenerationInstanceManager extends GenerationRequestManager{
 	}
 
 	public function requestChunk(Level $level, $chunkX, $chunkZ){
-		$this->generationManager->enqueueChunk($level->getID(), $chunkX, $chunkZ);
+		$this->generationManager->enqueueChunk($level->getId(), $chunkX, $chunkZ);
 	}
 
 	public function getChunk($levelID, $chunkX, $chunkZ){
diff --git a/src/pocketmine/level/generator/GenerationRequestManager.php b/src/pocketmine/level/generator/GenerationRequestManager.php
index 820622d8a..ed5151a4e 100644
--- a/src/pocketmine/level/generator/GenerationRequestManager.php
+++ b/src/pocketmine/level/generator/GenerationRequestManager.php
@@ -53,7 +53,7 @@ class GenerationRequestManager{
 	 * @param array  $options
 	 */
 	public function openLevel(Level $level, $generator, array $options = []){
-		$buffer = chr(GenerationManager::PACKET_OPEN_LEVEL) . Binary::writeInt($level->getID()) . Binary::writeInt($level->getSeed()) .
+		$buffer = chr(GenerationManager::PACKET_OPEN_LEVEL) . Binary::writeInt($level->getId()) . Binary::writeInt($level->getSeed()) .
 			Binary::writeShort(strlen($generator)) . $generator . serialize($options);
 
 		$this->generationThread->pushMainToThreadPacket($buffer);
@@ -63,7 +63,7 @@ class GenerationRequestManager{
 	 * @param Level $level
 	 */
 	public function closeLevel(Level $level){
-		$buffer = chr(GenerationManager::PACKET_CLOSE_LEVEL) . Binary::writeInt($level->getID());
+		$buffer = chr(GenerationManager::PACKET_CLOSE_LEVEL) . Binary::writeInt($level->getId());
 		$this->generationThread->pushMainToThreadPacket($buffer);
 	}
 
@@ -78,7 +78,7 @@ class GenerationRequestManager{
 	}
 
 	public function requestChunk(Level $level, $chunkX, $chunkZ){
-		$buffer = chr(GenerationManager::PACKET_REQUEST_CHUNK) . Binary::writeInt($level->getID()) . Binary::writeInt($chunkX) . Binary::writeInt($chunkZ);
+		$buffer = chr(GenerationManager::PACKET_REQUEST_CHUNK) . Binary::writeInt($level->getId()) . Binary::writeInt($chunkX) . Binary::writeInt($chunkZ);
 		$this->generationThread->pushMainToThreadPacket($buffer);
 	}
 
diff --git a/src/pocketmine/level/generator/object/Ore.php b/src/pocketmine/level/generator/object/Ore.php
index 061f09a2d..fae850cd5 100644
--- a/src/pocketmine/level/generator/object/Ore.php
+++ b/src/pocketmine/level/generator/object/Ore.php
@@ -80,7 +80,7 @@ class Ore{
 								$sizeZ **= 2;
 
 								if(($sizeX + $sizeY + $sizeZ) < 1 and $level->getBlockIdAt($x, $y, $z) === 1){
-									$level->setBlockIdAt($x, $y, $z, $this->type->material->getID());
+									$level->setBlockIdAt($x, $y, $z, $this->type->material->getId());
 									$level->setBlockDataAt($x, $y, $z, $this->type->material->getDamage());
 								}
 							}
diff --git a/src/pocketmine/metadata/EntityMetadataStore.php b/src/pocketmine/metadata/EntityMetadataStore.php
index 8370553a8..b2169ff18 100644
--- a/src/pocketmine/metadata/EntityMetadataStore.php
+++ b/src/pocketmine/metadata/EntityMetadataStore.php
@@ -30,6 +30,6 @@ class EntityMetadataStore extends MetadataStore{
 			throw new \InvalidArgumentException("Argument must be an Entity instance");
 		}
 
-		return $entity->getID() . ":" . $metadataKey;
+		return $entity->getId() . ":" . $metadataKey;
 	}
 }
\ No newline at end of file
diff --git a/src/pocketmine/network/protocol/DataPacket.php b/src/pocketmine/network/protocol/DataPacket.php
index b5e7938ed..d581530f2 100644
--- a/src/pocketmine/network/protocol/DataPacket.php
+++ b/src/pocketmine/network/protocol/DataPacket.php
@@ -156,7 +156,7 @@ abstract class DataPacket extends \stdClass{
 	}
 
 	protected function putSlot(Item $item){
-		$this->putShort($item->getID());
+		$this->putShort($item->getId());
 		$this->putByte($item->getCount());
 		$this->putShort($item->getDamage());
 	}
diff --git a/src/pocketmine/tile/Chest.php b/src/pocketmine/tile/Chest.php
index e6042b017..f729127ad 100644
--- a/src/pocketmine/tile/Chest.php
+++ b/src/pocketmine/tile/Chest.php
@@ -129,11 +129,11 @@ class Chest extends Spawnable implements InventoryHolder, Container{
 		$d = new Compound(false, [
 			new Byte("Count", $item->getCount()),
 			new Byte("Slot", $index),
-			new Short("id", $item->getID()),
+			new Short("id", $item->getId()),
 			new Short("Damage", $item->getDamage()),
 		]);
 
-		if($item->getID() === Item::AIR or $item->getCount() <= 0){
+		if($item->getId() === Item::AIR or $item->getCount() <= 0){
 			if($i >= 0){
 				unset($this->namedtag->Items[$i]);
 			}
diff --git a/src/pocketmine/tile/Furnace.php b/src/pocketmine/tile/Furnace.php
index e1a21249a..4aba6b9fe 100644
--- a/src/pocketmine/tile/Furnace.php
+++ b/src/pocketmine/tile/Furnace.php
@@ -137,11 +137,11 @@ class Furnace extends Tile implements InventoryHolder, Container{
 		$d = new Compound(false, [
 			new Byte("Count", $item->getCount()),
 			new Byte("Slot", $index),
-			new Short("id", $item->getID()),
+			new Short("id", $item->getId()),
 			new Short("Damage", $item->getDamage()),
 		]);
 
-		if($item->getID() === Item::AIR or $item->getCount() <= 0){
+		if($item->getId() === Item::AIR or $item->getCount() <= 0){
 			if($i >= 0){
 				unset($this->namedtag->Items[$i]);
 			}
@@ -176,7 +176,7 @@ class Furnace extends Tile implements InventoryHolder, Container{
 		$this->namedtag->MaxTime = new Short("MaxTime", $ev->getBurnTime());
 		$this->namedtag->BurnTime = new Short("BurnTime", $ev->getBurnTime());
 		$this->namedtag->BurnTicks = new Short("BurnTicks", 0);
-		if($this->getBlock()->getID() === Item::FURNACE){
+		if($this->getBlock()->getId() === Item::FURNACE){
 			$this->getLevel()->setBlock($this, Block::get(Item::BURNING_FURNACE, $this->getBlock()->getDamage()), true);
 		}
 
@@ -202,7 +202,7 @@ class Furnace extends Tile implements InventoryHolder, Container{
 		$raw = $this->inventory->getSmelting();
 		$product = $this->inventory->getResult();
 		$smelt = $this->server->getCraftingManager()->matchFurnaceRecipe($raw);
-		$canSmelt = ($smelt instanceof FurnaceRecipe and $raw->getCount() > 0 and (($smelt->getResult()->equals($product, true) and $product->getCount() < $product->getMaxStackSize()) or $product->getID() === Item::AIR));
+		$canSmelt = ($smelt instanceof FurnaceRecipe and $raw->getCount() > 0 and (($smelt->getResult()->equals($product, true) and $product->getCount() < $product->getMaxStackSize()) or $product->getId() === Item::AIR));
 
 		if($this->namedtag["BurnTime"] <= 0 and $canSmelt and $fuel->getFuelTime() !== null and $fuel->getCount() > 0){
 			$this->checkFuel($fuel);
@@ -215,7 +215,7 @@ class Furnace extends Tile implements InventoryHolder, Container{
 			if($smelt instanceof FurnaceRecipe and $canSmelt){
 				$this->namedtag->CookTime = new Short("CookTime", $this->namedtag["CookTime"] + 1);
 				if($this->namedtag["CookTime"] >= 200){ //10 seconds
-					$product = Item::get($smelt->getResult()->getID(), $smelt->getResult()->getDamage(), $product->getCount() + 1);
+					$product = Item::get($smelt->getResult()->getId(), $smelt->getResult()->getDamage(), $product->getCount() + 1);
 
 					$this->server->getPluginManager()->callEvent($ev = new FurnaceSmeltEvent($this, $raw, $product));
 
@@ -239,7 +239,7 @@ class Furnace extends Tile implements InventoryHolder, Container{
 			}
 			$ret = true;
 		}else{;
-			if($this->getBlock()->getID() === Item::BURNING_FURNACE){
+			if($this->getBlock()->getId() === Item::BURNING_FURNACE){
 				$this->getLevel()->setBlock($this, Block::get(Item::FURNACE, $this->getBlock()->getDamage()), true);
 			}
 			$this->namedtag->BurnTime = new Short("BurnTime", 0);