Server can be joined, again! (fixed weak references and blocks)

src/pocketmine/Player.php

@@ -2431,17 +2431,22 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 	 * Returns the created/existing window id
 	 *
 	 * @param Inventory $inventory
+	 * @param int       $forceId
 	 *
 	 * @return int
 	 */
-	public function addWindow(Inventory $inventory){
+	public function addWindow(Inventory $inventory, $forceId = null){
 		if($this->windows->contains($inventory)){
 			return $this->windows[$inventory];
 		}
-		$this->windowCnt = $cnt = max(2, ++$this->windowCnt % 99);
+		if($forceId === null){
+			$this->windowCnt = $cnt = max(2, ++$this->windowCnt % 99);
+		}else{
+			$cnt = (int) $forceId;
+		}
 		$this->windowIndex[$cnt] = $inventory;
 		$this->windows->attach($inventory, $cnt);
-		$this->inventory->onOpen($this);
+		$inventory->onOpen($this);
 
 		return $cnt;
 	}

src/pocketmine/block/Block.php

@@ -682,7 +682,7 @@ abstract class Block extends Position implements Metadatable{
 			return $this->getLevel()->getBlock($v);
 		}
 
-		return $v;
+		return Block::get(Item::AIR, 0, $v);
 	}
 
 	/**

src/pocketmine/entity/Human.php

@@ -47,6 +47,10 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 
 	protected function initEntity(){
 		$this->inventory = new PlayerInventory($this);
+		if($this instanceof Player){
+			$this->addWindow($this->inventory, 0);
+		}
+
 
 		if(isset($this->namedtag->NameTag)){
 			$this->nameTag = $this->namedtag["NameTag"];

src/pocketmine/inventory/BaseInventory.php

@@ -59,12 +59,6 @@ abstract class BaseInventory implements Inventory{
 		$this->holder = $holder;
 		$this->viewers = new \SplObjectStorage();
 
-		//A holder can be a plugin, or an entity
-		if($this->holder instanceof Player){
-			$this->holder->addWindow($this, 0);
-		}
-
-
 		$this->type = $type;
 		if($overrideSize !== null){
 			$this->size = (int) $overrideSize;
@@ -138,13 +132,12 @@ abstract class BaseInventory implements Inventory{
 			Server::getInstance()->getPluginManager()->callEvent($ev = new EntityInventoryChangeEvent($holder, $this->getItem($index), $item, $index));
 			if($ev->isCancelled()){
 				$this->sendContents($this->getViewers());
-
 				return false;
 			}
 			$item = $ev->getNewItem();
 		}
 
-		$old = $this->slots[$index];
+		$old = $this->getItem($index);
 		$this->slots[$index] = clone $item;
 		$this->onSlotChange($index, $old);
 

src/pocketmine/inventory/PlayerInventory.php

@@ -211,16 +211,16 @@ class PlayerInventory extends BaseInventory{
 
 		if($index >= $this->getSize()){ //Armor change
 			Server::getInstance()->getPluginManager()->callEvent($ev = new EntityArmorChangeEvent($this->getHolder(), $this->getItem($index), $item, $index));
-			if($ev->isCancelled()){
+			if($ev->isCancelled() and $this->getHolder() instanceof Player){
-				$this->sendArmorContents($this);
+				$this->sendArmorContents($this->getHolder());
-				$this->sendContents($this);
+				$this->sendContents($this->getHolder());
 
 				return false;
 			}
 			$item = $ev->getNewItem();
 		}
 
-		$old = $this->slots[$index];
+		$old = $this->getItem($index);
 		$this->slots[$index] = clone $item;
 		$this->onSlotChange($index, $old);
 

src/pocketmine/level/Level.php

@@ -479,14 +479,14 @@ class Level{
 	}
 
 	/**
+	 * @deprecated
+	 *
 	 * @param Vector3 $pos
 	 *
 	 * @return Block
 	 */
 	public function getBlockRaw(Vector3 $pos){
-		$b = $this->level->getBlock($pos->x, $pos->y, $pos->z);
+		return $this->getBlock($pos);
-
-		return Block::get($b[0], $b[1], new Position($pos->x, $pos->y, $pos->z, $this));
 	}
 
 	/**
@@ -495,9 +495,6 @@ class Level{
 	 * @return bool|Block
 	 */
 	public function getBlock(Vector3 $pos){
-		if($pos instanceof Position and $pos->level !== $this){
-			return false;
-		}
 		$b = $this->level->getBlock($pos->x, $pos->y, $pos->z);
 
 		return Block::get($b[0], $b[1], new Position($pos->x, $pos->y, $pos->z, $this));