JoystickDirectional constructor
      
      JoystickDirectional({})
     
    
    
Implementation
JoystickDirectional({
  Future<Sprite>? spriteBackgroundDirectional,
  Future<Sprite>? spriteKnobDirectional,
  this.isFixed = true,
  this.margin = const EdgeInsets.all(100),
  this.alignment = Alignment.bottomLeft,
  this.size = 80,
  this.color = Colors.blueGrey,
  this.enableDiagonalInput = true,
}) {
  _loader?.add(
    AssetToLoad<Sprite>(spriteBackgroundDirectional, (value) {
      _backgroundSprite = value;
    }),
  );
  _loader?.add(
    AssetToLoad<Sprite>(spriteKnobDirectional, (value) {
      _knobSprite = value;
    }),
  );
  _tileSize = size / 2;
}