mirror of https://github.com/flutter/pinball.git
Alejandro Santiago
3 years ago
committed by
GitHub
commit
39e3f5d556
@ -1,8 +1 @@
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// Copyright (c) 2021, Very Good Ventures
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// https://verygood.ventures
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//
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file or at
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// https://opensource.org/licenses/MIT.
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export 'view/app.dart';
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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_forge2d/flame_forge2d.dart';
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import 'package:pinball_components/pinball_components.dart';
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import 'package:pinball_flame/pinball_flame.dart';
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/// Scales the ball's gravity according to its position on the board.
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class BallGravitatingBehavior extends Component
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with ParentIsA<Ball>, HasGameRef<Forge2DGame> {
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@override
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void update(double dt) {
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super.update(dt);
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final defaultGravity = gameRef.world.gravity.y;
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final maxXDeviationFromCenter = BoardDimensions.bounds.width / 2;
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const maxXGravityPercentage =
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(1 - BoardDimensions.perspectiveShrinkFactor) / 2;
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final xDeviationFromCenter = parent.body.position.x;
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final positionalXForce = ((xDeviationFromCenter / maxXDeviationFromCenter) *
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maxXGravityPercentage) *
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defaultGravity;
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final positionalYForce = math.sqrt(
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math.pow(defaultGravity, 2) - math.pow(positionalXForce, 2),
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);
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final gravityOverride = parent.body.gravityOverride;
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if (gravityOverride != null) {
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gravityOverride.setValues(positionalXForce, positionalYForce);
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} else {
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parent.body.gravityOverride = Vector2(positionalXForce, positionalYForce);
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}
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}
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}
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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:pinball_flame/pinball_flame.dart';
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/// Scales the ball's body and sprite according to its position on the board.
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class BallScalingBehavior extends Component with ParentIsA<Ball> {
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@override
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void update(double dt) {
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super.update(dt);
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final boardHeight = BoardDimensions.bounds.height;
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const maxShrinkValue = BoardDimensions.perspectiveShrinkFactor;
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final standardizedYPosition = parent.body.position.y + (boardHeight / 2);
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final scaleFactor = maxShrinkValue +
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((standardizedYPosition / boardHeight) * (1 - maxShrinkValue));
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parent.body.fixtures.first.shape.radius = (Ball.size.x / 2) * scaleFactor;
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parent.firstChild<SpriteComponent>()!.scale.setValues(
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scaleFactor,
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scaleFactor,
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);
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}
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}
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export 'ball_gravitating_behavior.dart';
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export 'ball_scaling_behavior.dart';
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// ignore_for_file: cascade_invocations
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import 'dart:ui';
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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 'package:pinball_components/src/components/ball/behaviors/behaviors.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 asset = Assets.images.ball.ball.keyName;
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final flameTester = FlameTester(() => TestGame([asset]));
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group('BallGravitatingBehavior', () {
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const baseColor = Color(0xFFFFFFFF);
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test('can be instantiated', () {
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expect(
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BallGravitatingBehavior(),
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isA<BallGravitatingBehavior>(),
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);
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});
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flameTester.test('can be loaded', (game) async {
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final ball = Ball.test(baseColor: baseColor);
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final behavior = BallGravitatingBehavior();
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await ball.add(behavior);
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await game.ensureAdd(ball);
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expect(
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ball.firstChild<BallGravitatingBehavior>(),
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equals(behavior),
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);
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});
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flameTester.test(
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"overrides the body's horizontal gravity symmetrically",
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(game) async {
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final ball1 = Ball.test(baseColor: baseColor)
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..initialPosition = Vector2(10, 0);
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await ball1.add(BallGravitatingBehavior());
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final ball2 = Ball.test(baseColor: baseColor)
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..initialPosition = Vector2(-10, 0);
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await ball2.add(BallGravitatingBehavior());
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await game.ensureAddAll([ball1, ball2]);
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game.update(1);
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expect(
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ball1.body.gravityOverride!.x,
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equals(-ball2.body.gravityOverride!.x),
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);
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expect(
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ball1.body.gravityOverride!.y,
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equals(ball2.body.gravityOverride!.y),
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);
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},
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);
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});
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}
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// ignore_for_file: cascade_invocations
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import 'dart:ui';
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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 'package:pinball_components/src/components/ball/behaviors/behaviors.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 asset = Assets.images.ball.ball.keyName;
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final flameTester = FlameTester(() => TestGame([asset]));
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group('BallScalingBehavior', () {
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const baseColor = Color(0xFFFFFFFF);
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test('can be instantiated', () {
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expect(
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BallScalingBehavior(),
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isA<BallScalingBehavior>(),
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);
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});
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flameTester.test('can be loaded', (game) async {
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final ball = Ball.test(baseColor: baseColor);
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final behavior = BallScalingBehavior();
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await ball.add(behavior);
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await game.ensureAdd(ball);
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expect(
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ball.firstChild<BallScalingBehavior>(),
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equals(behavior),
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);
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});
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flameTester.test('scales the shape radius', (game) async {
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final ball1 = Ball.test(baseColor: baseColor)
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..initialPosition = Vector2(0, 10);
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await ball1.add(BallScalingBehavior());
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final ball2 = Ball.test(baseColor: baseColor)
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..initialPosition = Vector2(0, -10);
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await ball2.add(BallScalingBehavior());
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await game.ensureAddAll([ball1, ball2]);
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game.update(1);
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final shape1 = ball1.body.fixtures.first.shape;
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final shape2 = ball2.body.fixtures.first.shape;
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expect(
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shape1.radius,
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greaterThan(shape2.radius),
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);
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});
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flameTester.test(
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'scales the sprite',
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(game) async {
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final ball1 = Ball.test(baseColor: baseColor)
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..initialPosition = Vector2(0, 10);
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await ball1.add(BallScalingBehavior());
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final ball2 = Ball.test(baseColor: baseColor)
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..initialPosition = Vector2(0, -10);
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await ball2.add(BallScalingBehavior());
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await game.ensureAddAll([ball1, ball2]);
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game.update(1);
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final sprite1 = ball1.firstChild<SpriteComponent>()!;
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final sprite2 = ball2.firstChild<SpriteComponent>()!;
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expect(
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sprite1.scale.x,
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greaterThan(sprite2.scale.x),
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);
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expect(
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sprite1.scale.y,
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greaterThan(sprite2.scale.y),
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);
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},
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);
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});
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}
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import 'dart:math';
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import 'package:flame/game.dart';
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import 'package:flame_forge2d/flame_forge2d.dart';
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import 'package:flame_forge2d/world_contact_listener.dart';
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// NOTE(wolfen): This should be removed when https://github.com/flame-engine/flame/pull/1597 is solved.
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/// {@template pinball_forge2d_game}
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/// A [Game] that uses the Forge2D physics engine.
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/// {@endtemplate}
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class PinballForge2DGame extends FlameGame implements Forge2DGame {
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/// {@macro pinball_forge2d_game}
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PinballForge2DGame({
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required Vector2 gravity,
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}) : world = World(gravity),
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super(camera: Camera()) {
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camera.zoom = Forge2DGame.defaultZoom;
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world.setContactListener(WorldContactListener());
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}
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@override
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final World world;
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@override
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void update(double dt) {
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super.update(dt);
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world.stepDt(min(dt, 1 / 60));
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}
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@override
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Vector2 screenToFlameWorld(Vector2 position) {
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throw UnimplementedError();
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}
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@override
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Vector2 screenToWorld(Vector2 position) {
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throw UnimplementedError();
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}
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@override
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Vector2 worldToScreen(Vector2 position) {
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throw UnimplementedError();
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}
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}
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// ignore_for_file: cascade_invocations
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import 'package:flame/extensions.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_flame/pinball_flame.dart';
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void main() {
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final flameTester = FlameTester(
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() => PinballForge2DGame(gravity: Vector2.zero()),
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);
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group('PinballForge2DGame', () {
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test('can instantiate', () {
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expect(
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() => PinballForge2DGame(gravity: Vector2.zero()),
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returnsNormally,
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);
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});
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flameTester.test(
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'screenToFlameWorld throws UnimpelementedError',
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(game) async {
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expect(
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() => game.screenToFlameWorld(Vector2.zero()),
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throwsUnimplementedError,
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);
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},
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);
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flameTester.test(
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'screenToWorld throws UnimpelementedError',
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(game) async {
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expect(
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() => game.screenToWorld(Vector2.zero()),
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throwsUnimplementedError,
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);
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},
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);
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flameTester.test(
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'worldToScreen throws UnimpelementedError',
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(game) async {
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expect(
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() => game.worldToScreen(Vector2.zero()),
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throwsUnimplementedError,
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);
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},
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);
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});
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}
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