Improve checks for Position::equals() and Location::equals() (#929)

* Add files via upload

* Position::$level can be null.

* Use getLevel() in place of $level

because of WeakPosition.

src/pocketmine/level/Location.php

@@ -79,4 +79,11 @@ public function getPitch(){
 	public function __toString(){
 		return "Location (level=" . ($this->isValid() ? $this->getLevel()->getName() : "null") . ", x=$this->x, y=$this->y, z=$this->z, yaw=$this->yaw, pitch=$this->pitch)";
 	}
+
+	public function equals(Vector3 $v){
+		if($v instanceof Location){
+			return parent::equals($v) and $v->yaw == $this->yaw and $v->pitch == $this->pitch;
+		}
+		return parent::equals($v);
+	}
 }

src/pocketmine/level/Position.php

@@ -133,4 +133,10 @@ public function setComponents($x, $y, $z){
 		return $this;
 	}
 
+	public function equals(Vector3 $v){
+		if($v instanceof Position){
+			return parent::equals($v) and $v->getLevel() === $this->getLevel();
+		}
+		return parent::equals($v);
+	}
 }