juskek

class Fly {
  final FlyTerminator game;
  Rect? flyRect;
  Paint flyPaint = Paint();

  Fly(this.game, double x, double y) {
    flyRect = Rect.fromLTWH(x, y, game.tileSize!, game.tileSize!);
    flyPaint.color = Color(0xff6ab04c);
  }

juskek

...

class FlyTerminator extends Game {
  ...
  List<Fly>? flies;
  Random? rnd;

  FlyTerminator() {
    initialize();
  }

juskek

...
class FlyTerminator extends Game with TapDetector {
  ...
  void spawnFly() {
    ...
    flies!.add(Fly(this, x, y));
  }
  
  void update(double t) {
    ...