Implement FlxSound.pan for stereo sounds

source/lime/_internal/backend/html5/HTML5AudioSource.hx

@@ -251,16 +251,6 @@ class HTML5AudioSource
 
 	public function getPosition():Vector4
 	{
-		#if lime_howlerjs
-		// This should work, but it returns null (But checking the inside of the howl, the _pos is actually null... so ¯\_(ツ)_/¯)
-		/*
-			var arr = parent.buffer.__srcHowl.pos())
-			position.x = arr[0];
-			position.y = arr[1];
-			position.z = arr[2];
-		 */
-		#end
-
 		return position;
 	}
 
@@ -278,4 +268,16 @@ class HTML5AudioSource
 
 		return position;
 	}
+
+	public function getPan():Float
+	{
+		return position.x;
+	}
+
+	public function setPan(value:Float):Float
+	{
+		position.setTo(value, 0, -Math.sqrt(1 - value * value));
+		if (parent.buffer != null && parent.buffer.__srcHowl != null && parent.buffer.__srcHowl.stereo != null) parent.buffer.__srcHowl.stereo(value, id);
+		return value;
+	}
 }