You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
pinball/lib/game/components/score_effect_controller.dart

46 lines
1.2 KiB

import 'dart:math';
import 'package:flame/components.dart';
import 'package:flame_bloc/flame_bloc.dart';
import 'package:pinball/flame/flame.dart';
import 'package:pinball/game/game.dart';
import 'package:pinball_components/pinball_components.dart';
/// {@template score_effect_controller}
/// A [ComponentController] responsible for adding [ScoreText]s
/// on the game screen when the user earns points.
/// {@endtemplate}
class ScoreEffectController extends ComponentController<PinballGame>
with BlocComponent<GameBloc, GameState> {
/// {@macro score_effect_controller}
ScoreEffectController(PinballGame component) : super(component);
int _lastScore = 0;
final _random = Random();
double _noise() {
return _random.nextDouble() * 5 * (_random.nextBool() ? -1 : 1);
}
@override
bool listenWhen(GameState? previousState, GameState newState) {
return previousState?.score != newState.score;
}
@override
void onNewState(GameState state) {
final newScore = state.score - _lastScore;
_lastScore = state.score;
component.add(
ScoreText(
text: newScore.toString(),
position: Vector2(
_noise(),
_noise() + (-BoardDimensions.bounds.topCenter.dy + 10),
),
),
);
}
}