Removed entanglement between chunks and providers. WARNING: BREAKING API CHANGES.

- All entity and tile constructors now require a \pocketmine\level\Level instead of a \pocketmine\level\format\Chunk.
- Chunk->getProvider() and Chunk->setProvider() have been removed.
- Chunk::__construct() has had the $provider parameter removed.
- Chunk->unload() has had the unused $save parameter removed.
- ChunkEvents now take a Level parameter instead of going through the Chunk

API bump to 3.0.0-ALPHA4

src/pocketmine/entity/Arrow.php

@@ -21,7 +21,7 @@
 
 namespace pocketmine\entity;
 
-use pocketmine\level\format\Chunk;
+use pocketmine\level\Level;
 use pocketmine\level\particle\CriticalParticle;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
@@ -41,9 +41,9 @@ class Arrow extends Projectile{
 
 	protected $isCritical;
 
-	public function __construct(Chunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null, $critical = false){
+	public function __construct(Level $level, CompoundTag $nbt, Entity $shootingEntity = null, $critical = false){
 		$this->isCritical = (bool) $critical;
-		parent::__construct($chunk, $nbt, $shootingEntity);
+		parent::__construct($level, $nbt, $shootingEntity);
 	}
 
 	public function onUpdate($currentTick){

src/pocketmine/entity/Entity.php

@@ -269,10 +269,7 @@ abstract class Entity extends Location implements Metadatable{
 	protected $isPlayer = false;
 
 
-	public function __construct(Chunk $chunk, CompoundTag $nbt){
-
-		assert($chunk !== null and $chunk->getProvider() !== null);
-
+	public function __construct(Level $level, CompoundTag $nbt){
 		$this->timings = Timings::getEntityTimings($this);
 
 		$this->isPlayer = $this instanceof Player;
@@ -287,9 +284,10 @@ abstract class Entity extends Location implements Metadatable{
 		$this->justCreated = true;
 		$this->namedtag = $nbt;
 
-		$this->chunk = $chunk;
-		$this->setLevel($chunk->getProvider()->getLevel());
-		$this->server = $chunk->getProvider()->getLevel()->getServer();
+		$this->chunk = $level->getChunk($this->namedtag["Pos"][0] >> 4, $this->namedtag["Pos"][2] >> 4);
+		assert($this->chunk !== null);
+		$this->setLevel($level);
+		$this->server = $level->getServer();
 
 		$this->boundingBox = new AxisAlignedBB(0, 0, 0, 0, 0, 0);
 		$this->setPositionAndRotation(
@@ -301,6 +299,8 @@ abstract class Entity extends Location implements Metadatable{
 			$this->namedtag->Rotation[0],
 			$this->namedtag->Rotation[1]
 		);
+
+
 		$this->setMotion($this->temporalVector->setComponents($this->namedtag["Motion"][0], $this->namedtag["Motion"][1], $this->namedtag["Motion"][2]));
 
 		assert(!is_nan($this->x) and !is_infinite($this->x) and !is_nan($this->y) and !is_infinite($this->y) and !is_nan($this->z) and !is_infinite($this->z));
@@ -515,16 +515,16 @@ abstract class Entity extends Location implements Metadatable{
 
 	/**
 	 * @param int|string  $type
-	 * @param Chunk       $chunk
+	 * @param Level       $level
 	 * @param CompoundTag $nbt
 	 * @param             $args
 	 *
 	 * @return Entity
 	 */
-	public static function createEntity($type, Chunk $chunk, CompoundTag $nbt, ...$args){
+	public static function createEntity($type, Level $level, CompoundTag $nbt, ...$args){
 		if(isset(self::$knownEntities[$type])){
 			$class = self::$knownEntities[$type];
-			return new $class($chunk, $nbt, ...$args);
+			return new $class($level, $nbt, ...$args);
 		}
 
 		return null;

src/pocketmine/entity/Projectile.php

@@ -26,7 +26,7 @@ use pocketmine\event\entity\EntityDamageByChildEntityEvent;
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\event\entity\ProjectileHitEvent;
-use pocketmine\level\format\Chunk;
+use pocketmine\level\Level;
 use pocketmine\level\MovingObjectPosition;
 use pocketmine\math\Vector3;
 use pocketmine\nbt\tag\CompoundTag;
@@ -42,12 +42,12 @@ abstract class Projectile extends Entity{
 
 	public $hadCollision = false;
 
-	public function __construct(Chunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null){
+	public function __construct(Level $level, CompoundTag $nbt, Entity $shootingEntity = null){
 		$this->shootingEntity = $shootingEntity;
 		if($shootingEntity !== null){
 			$this->setDataProperty(self::DATA_SHOOTER_ID, self::DATA_TYPE_LONG, $shootingEntity->getId());
 		}
-		parent::__construct($chunk, $nbt);
+		parent::__construct($level, $nbt);
 	}
 
 	public function attack($damage, EntityDamageEvent $source){

src/pocketmine/entity/Snowball.php

@@ -21,7 +21,7 @@
 
 namespace pocketmine\entity;
 
-use pocketmine\level\format\Chunk;
+use pocketmine\level\Level;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
 use pocketmine\Player;
@@ -36,8 +36,8 @@ class Snowball extends Projectile{
 	protected $gravity = 0.03;
 	protected $drag = 0.01;
 
-	public function __construct(Chunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null){
-		parent::__construct($chunk, $nbt, $shootingEntity);
+	public function __construct(Level $level, CompoundTag $nbt, Entity $shootingEntity = null){
+		parent::__construct($level, $nbt, $shootingEntity);
 	}
 
 	public function onUpdate($currentTick){