mirror of https://github.com/flutter/pinball.git
refactor: removed FireEffect (#402)
Alejandro Santiago
2 years ago
committed by
alestiago
parent
93dd24f26a
commit
21bf4f478d
@ -1,78 +0,0 @@
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import 'dart:math' as math;
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import 'package:flame/components.dart';
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import 'package:flame/extensions.dart';
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import 'package:flame/particles.dart';
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import 'package:flame_forge2d/flame_forge2d.dart' hide Particle;
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import 'package:flutter/material.dart';
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const _particleRadius = 0.25;
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/// {@template fire_effect}
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/// A [BodyComponent] which creates a fire trail effect using the given
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/// parameters
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/// {@endtemplate}
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class FireEffect extends ParticleSystemComponent {
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/// {@macro fire_effect}
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FireEffect({
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required this.burstPower,
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required this.direction,
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Vector2? position,
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}) : super(
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position: position,
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);
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/// A [double] value that will define how "strong" the burst of particles
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/// will be.
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final double burstPower;
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/// Which direction the burst will aim.
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final Vector2 direction;
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@override
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Future<void> onLoad() async {
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await super.onLoad();
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final children = [
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...List.generate(4, (index) {
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return CircleParticle(
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radius: _particleRadius,
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paint: Paint()..color = Colors.yellow.darken((index + 1) / 4),
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);
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}),
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...List.generate(4, (index) {
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return CircleParticle(
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radius: _particleRadius,
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paint: Paint()..color = Colors.red.darken((index + 1) / 4),
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);
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}),
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...List.generate(4, (index) {
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return CircleParticle(
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radius: _particleRadius,
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paint: Paint()..color = Colors.orange.darken((index + 1) / 4),
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);
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}),
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];
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final random = math.Random();
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final spreadTween = Tween<double>(begin: -0.2, end: 0.2);
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particle = Particle.generate(
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count: math.max((random.nextDouble() * (burstPower * 10)).toInt(), 1),
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generator: (_) {
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final spread = Vector2(
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spreadTween.transform(random.nextDouble()),
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spreadTween.transform(random.nextDouble()),
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);
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final finalDirection = Vector2(direction.x, direction.y) + spread;
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final speed = finalDirection * (burstPower * 20);
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return AcceleratedParticle(
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lifespan: 5 / burstPower,
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position: Vector2.zero(),
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speed: speed,
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child: children[random.nextInt(children.length)],
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);
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},
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);
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}
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}
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@ -1,48 +0,0 @@
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import 'package:flame/components.dart';
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import 'package:pinball_components/pinball_components.dart';
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import 'package:sandbox/common/common.dart';
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class FireEffectGame extends LineGame {
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static const description = '''
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Shows how the FireEffect renders.
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- Drag a line to define the trail direction.
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''';
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@override
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void onLine(Vector2 line) {
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add(_EffectEmitter(line));
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}
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}
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class _EffectEmitter extends Component {
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_EffectEmitter(this.line) {
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_direction = line.normalized();
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_force = line.length;
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}
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static const _timerLimit = 2.0;
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var _timer = _timerLimit;
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final Vector2 line;
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late Vector2 _direction;
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late double _force;
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@override
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void update(double dt) {
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super.update(dt);
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if (_timer > 0) {
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add(
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FireEffect(
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burstPower: (_timer / _timerLimit) * _force,
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direction: _direction,
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),
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);
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_timer -= dt;
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} else {
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removeFromParent();
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}
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}
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}
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@ -1,18 +1,11 @@
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import 'package:dashbook/dashbook.dart';
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import 'package:sandbox/common/common.dart';
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import 'package:sandbox/stories/effects/camera_zoom_game.dart';
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import 'package:sandbox/stories/effects/fire_effect_game.dart';
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void addEffectsStories(Dashbook dashbook) {
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dashbook.storiesOf('Effects')
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..addGame(
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title: 'Fire',
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description: FireEffectGame.description,
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gameBuilder: (_) => FireEffectGame(),
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)
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..addGame(
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title: 'CameraZoom',
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description: CameraZoomGame.description,
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gameBuilder: (_) => CameraZoomGame(),
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);
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dashbook.storiesOf('Effects').addGame(
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title: 'CameraZoom',
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description: CameraZoomGame.description,
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gameBuilder: (_) => CameraZoomGame(),
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);
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}
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@ -1,26 +0,0 @@
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// ignore_for_file: cascade_invocations
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import 'package:flame/components.dart';
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import 'package:flame_test/flame_test.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:pinball_components/pinball_components.dart';
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import '../../helpers/helpers.dart';
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void main() {
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TestWidgetsFlutterBinding.ensureInitialized();
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final flameTester = FlameTester(TestGame.new);
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flameTester.test(
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'loads correctly',
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(game) async {
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final fireEffect = FireEffect(
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burstPower: 1,
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direction: Vector2.zero(),
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);
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await game.ensureAdd(fireEffect);
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expect(game.contains(fireEffect), isTrue);
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},
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);
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}
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