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https://github.com/flame-engine/flame.git
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86 lines
2.6 KiB
Dart
86 lines
2.6 KiB
Dart
import 'dart:math';
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import 'package:flame/anchor.dart';
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import 'package:flame/components/position_component.dart';
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import 'package:flame/effects/effects.dart';
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import 'package:flame/extensions/vector2.dart';
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import 'package:flame/game/base_game.dart';
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import 'package:flutter_test/flutter_test.dart';
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final Random random = Random();
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class Callback {
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bool isCalled = false;
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void call() => isCalled = true;
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}
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void effectTest(
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WidgetTester tester,
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PositionComponent component,
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PositionComponentEffect effect, {
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bool hasFinished = true,
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double iterations = 1.0,
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double expectedAngle = 0.0,
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Vector2 expectedPosition,
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Vector2 expectedSize,
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// Only use when checking a value that is not in
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// the start, end or peak of an iteration
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double floatRange = 0.000001,
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}) async {
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expectedPosition ??= Vector2.zero();
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expectedSize ??= Vector2.all(100.0);
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final Callback callback = Callback();
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effect.onComplete = callback.call;
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final BaseGame game = BaseGame();
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game.add(component);
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component.addEffect(effect);
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final double duration = effect.totalTravelTime;
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await tester.pumpWidget(game.widget);
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double timeLeft = iterations * duration;
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while (timeLeft > 0) {
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final double stepDelta = random.nextInt(100) / 1000;
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game.update(stepDelta);
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timeLeft -= stepDelta;
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}
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if (floatRange != 0) {
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bool acceptableVector(Vector2 vector, Vector2 expectedVector) {
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return (expectedVector - vector).length < floatRange;
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}
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final bool acceptablePosition =
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acceptableVector(component.position, expectedPosition);
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final bool acceptableSize = acceptableVector(component.size, expectedSize);
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final bool acceptableAngle =
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(expectedAngle - component.angle).abs() < floatRange;
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assert(acceptablePosition, "Position is not correct");
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assert(acceptableAngle, "Angle is not correct");
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assert(acceptableSize, "Size is not correct");
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} else {
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expect(
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component.position,
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expectedPosition,
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reason: "Position is not correct",
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);
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expect(component.angle, expectedAngle, reason: "Angle is not correct");
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expect(component.size, expectedSize, reason: "Size is not correct");
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}
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expect(effect.hasFinished(), hasFinished);
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expect(callback.isCalled, hasFinished);
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game.update(0.0); // Since effects are removed before they are updated
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expect(component.effects.isEmpty, hasFinished);
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}
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class Square extends PositionComponent {
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Square({
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Vector2 position,
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Vector2 size,
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double angle,
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Anchor anchor,
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}) {
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this.position = position ?? Vector2.zero();
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this.size = size ?? Vector2.all(100.0);
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this.angle = angle ?? 0.0;
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this.anchor = anchor ?? Anchor.center;
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}
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}
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