Fixed a few errors in new Events

src/PocketMine/Player.php

@@ -1043,7 +1043,7 @@ class Player extends RealHuman{
 			return false;
 		}
 
-		if(EventHandler::callEvent(new Event\Player\PlayerGameModeChangeEvent((int) $gm)) === Event\Event::DENY){
+		if(EventHandler::callEvent(new Event\Player\PlayerGameModeChangeEvent($this, (int) $gm)) === Event\Event::DENY){
 			return false;
 		}
 

src/PocketMine/event/block/BlockBreakEvent.php

@@ -58,7 +58,7 @@ class BlockBreakEvent extends BlockEvent implements CancellableEvent{
 	}
 
 	public function getItem(){
-		return $item;
+		return $this->item;
 	}
 
 	public function getInstaBreak(){

src/PocketMine/event/block/BlockPlaceEvent.php

@@ -66,7 +66,7 @@ class BlockPlaceEvent extends BlockEvent implements CancellableEvent{
 	 * @return mixed
 	 */
 	public function getItem(){
-		return $item;
+		return $this->item;
 	}
 
 	public function getBlockReplaced(){

src/PocketMine/event/player/PlayerGameModeChangeEvent.php

@@ -39,7 +39,7 @@ class PlayerGameModeChangeEvent extends PlayerEvent implements CancellableEvent{
 
 	public function __construct(Player $player, $newGamemode){
 		$this->player = $player;
-		$this->gamemode = (int) $gamemode;
+		$this->gamemode = (int) $newGamemode;
 	}
 
 	public function getNewGamemode(){

src/PocketMine/event/player/PlayerInteractEvent.php

@@ -57,7 +57,7 @@ class PlayerInteractEvent extends PlayerEvent implements CancellableEvent{
 	}
 
 	public function getItem(){
-		return $item;
+		return $this->item;
 	}
 
 	public function getBlock(){