moveToTargetAnimated method

void moveToTargetAnimated(GameComponent target, { double zoom = 1, double angle = 0, VoidCallback? finish, Duration? duration, Curve curve = Curves.decelerate, })

Implementation

void moveToTargetAnimated(
  GameComponent target, {
  double zoom = 1,
  double angle = 0,
  VoidCallback? finish,
  Duration? duration,
  Curve curve = Curves.decelerate,
}) {
  if (zoom <= 0.0 || _isMoving) return;
  config.target = null;
  _isMoving = true;

  double originX = this.position.dx;
  double originY = this.position.dy;

  double diffZoom = config.zoom - zoom;
  double initialZoom = config.zoom;

  double diffAngle = config.angle - angle;
  double originAngle = config.angle;

  gameRef.getValueGenerator(
    duration ?? Duration(seconds: 1),
    onChange: (value) {
      double diffX = originX - target.position.center.dx;
      double diffY = originY - target.position.center.dy;

      this.position = position.copyWith(x: originX - (diffX * value));
      this.position = position.copyWith(y: originY - (diffY * value));
      config.zoom = initialZoom - (diffZoom * value);
      config.angle = originAngle - (diffAngle * value);

      if (config.moveOnlyMapArea) {
        _keepInMapArea();
      }
    },
    onFinish: () {
      config.target = target;
      _isMoving = false;
      finish?.call();
    },
    curve: curve,
  ).start();
}