mirror of https://github.com/flutter/pinball.git
alestiago
3 years ago
parent
58324adad6
commit
5b37577564
@ -1,101 +1,47 @@
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import 'package:flame/components.dart';
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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:flutter/foundation.dart';
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const _attachedErrorMessage = "Can't add to attached Blueprints";
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// TODO(erickzanardo): Keeping this inside our code base
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// so we can experiment with the idea, but this is a
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// potential upstream change on Flame.
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/// A [Blueprint] is a virtual way of grouping [Component]s
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/// that are related, but they need to be added directly on
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/// the [FlameGame] level.
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/// {@template blueprint}
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/// A [Blueprint] is a virtual way of grouping [Component]s that are related,
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/// but they need to be added directly on the [FlameGame] level.
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/// {@endtemplate blueprint}
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// TODO(alestiago): refactor with feat/make-blueprint-extend-component.
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abstract class Blueprint<T extends FlameGame> extends Component {
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final List<Component> _components = [];
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final List<Blueprint> _blueprints = [];
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bool _isAttached = false;
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/// Called before the the [Component]s managed
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/// by this blueprint is added to the [FlameGame]
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void build(T gameRef);
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/// Attach the [Component]s built on [build] to the [game]
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/// instance
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@mustCallSuper
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Future<void> attach(T game) async {
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build(game);
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await Future.wait([
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game.addAll(_components),
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..._blueprints.map(game.addFromBlueprint).toList(),
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]);
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_isAttached = true;
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class Blueprint extends Component {
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/// {@macro blueprint}
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Blueprint({
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Iterable<Component>? components,
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Iterable<Blueprint>? blueprints,
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}) {
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if (components != null) _components.addAll(components);
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if (blueprints != null) {
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for (final blueprint in blueprints) {
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_components.addAll(blueprint.components);
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}
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/// Adds a single [Component] to this blueprint.
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@override
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Future<void> add(Component component) async {
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assert(!_isAttached, _attachedErrorMessage);
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_components.add(component);
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}
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/// Adds a list of [Blueprint]s to this blueprint.
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void addAllBlueprints(List<Blueprint> blueprints) {
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assert(!_isAttached, _attachedErrorMessage);
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_blueprints.addAll(blueprints);
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}
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/// Adds a single [Blueprint] to this blueprint.
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void addBlueprint(Blueprint blueprint) {
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assert(!_isAttached, _attachedErrorMessage);
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_blueprints.add(blueprint);
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}
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/// Returns a copy of the components built by this blueprint
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List<Component> get components => List.unmodifiable(_components);
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/// Returns a copy of the children blueprints
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List<Blueprint> get blueprints => List.unmodifiable(_blueprints);
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}
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/// A [Blueprint] that provides additional
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/// structures specific to flame_forge2d
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abstract class Forge2DBlueprint extends Blueprint<Forge2DGame> {
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final List<ContactCallback> _callbacks = [];
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/// Adds a single [ContactCallback] to this blueprint
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void addContactCallback(ContactCallback callback) {
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assert(!_isAttached, _attachedErrorMessage);
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_callbacks.add(callback);
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}
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/// Adds a collection of [ContactCallback]s to this blueprint
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void addAllContactCallback(List<ContactCallback> callbacks) {
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assert(!_isAttached, _attachedErrorMessage);
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_callbacks.addAll(callbacks);
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}
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@override
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Future<void> attach(Forge2DGame game) async {
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await super.attach(game);
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final List<Component> _components = [];
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for (final callback in _callbacks) {
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game.addContactCallback(callback);
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}
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/// Attaches children.
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@mustCallSuper
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Future<void> _attach(Component parent) async {
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await parent.addAll(_components);
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}
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/// Returns a copy of the callbacks built by this blueprint
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List<ContactCallback> get callbacks => List.unmodifiable(_callbacks);
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/// Returns a copy of the components built by this blueprint.
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List<Component> get components => List.unmodifiable(_components);
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}
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/// Adds helper methods regardin [Blueprint]s to [FlameGame]
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extension FlameGameBlueprint on FlameGame {
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/// Adds helper methods regarding [Blueprint]s to [FlameGame].
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extension FlameGameBlueprint on Component {
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/// Shortcut to attach a [Blueprint] instance to this game
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/// equivalent to `MyBluepinrt().attach(game)`
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Future<void> addFromBlueprint(Blueprint blueprint) async {
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await blueprint.attach(this);
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await blueprint._attach(this);
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}
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}
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@ -1,138 +1,57 @@
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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_forge2d/contact_callbacks.dart';
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import 'package:flame/game.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:mocktail/mocktail.dart';
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import 'package:pinball_flame/pinball_flame.dart';
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import '../helpers/helpers.dart';
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class TestContactCallback extends ContactCallback<dynamic, dynamic> {}
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class MyBlueprint extends Blueprint {
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@override
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void build(_) {
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add(Component());
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addAll([Component(), Component()]);
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}
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}
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class MyOtherBlueprint extends Blueprint {
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@override
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void build(_) {
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add(Component());
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}
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}
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class YetMyOtherBlueprint extends Blueprint {
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@override
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void build(_) {
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add(Component());
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}
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}
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class MyComposedBlueprint extends Blueprint {
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@override
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void build(_) {
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addBlueprint(MyBlueprint());
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addAllBlueprints([MyOtherBlueprint(), YetMyOtherBlueprint()]);
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}
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}
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class MyForge2dBlueprint extends Forge2DBlueprint {
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@override
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void build(_) {
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addContactCallback(MockContactCallback());
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addAllContactCallback([MockContactCallback(), MockContactCallback()]);
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}
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}
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void main() {
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group('Blueprint', () {
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setUpAll(() {
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registerFallbackValue(MyBlueprint());
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registerFallbackValue(Component());
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});
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test('components can be added to it', () {
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final blueprint = MyBlueprint()..build(MockForge2DGame());
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expect(blueprint.components.length, equals(3));
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});
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test('blueprints can be added to it', () {
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final blueprint = MyComposedBlueprint()..build(MockForge2DGame());
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expect(blueprint.blueprints.length, equals(3));
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});
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test('adds the components to a game on attach', () {
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final mockGame = MockForge2DGame();
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when(() => mockGame.addAll(any())).thenAnswer((_) async {});
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MyBlueprint().attach(mockGame);
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TestWidgetsFlutterBinding.ensureInitialized();
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verify(() => mockGame.addAll(any())).called(1);
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});
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test('adds components from a child Blueprint the to a game on attach', () {
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final mockGame = MockForge2DGame();
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when(() => mockGame.addAll(any())).thenAnswer((_) async {});
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MyComposedBlueprint().attach(mockGame);
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verify(() => mockGame.addAll(any())).called(4);
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});
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test(
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'throws assertion error when adding to an already attached blueprint',
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() async {
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final mockGame = MockForge2DGame();
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when(() => mockGame.addAll(any())).thenAnswer((_) async {});
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final blueprint = MyBlueprint();
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await blueprint.attach(mockGame);
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expect(() => blueprint.add(Component()), throwsAssertionError);
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expect(() => blueprint.addAll([Component()]), throwsAssertionError);
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},
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group('Blueprint', () {
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final flameTester = FlameTester(FlameGame.new);
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flameTester.test('adds the components to parent on attach', (game) async {
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final blueprint = Blueprint(
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components: [
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Component(),
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Component(),
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],
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);
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await game.addFromBlueprint(blueprint);
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expect(game.children, equals(blueprint.components));
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});
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flameTester
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.test('adds components from a child Blueprint the to a game on attach',
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(game) async {
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final childBlueprint = Blueprint(
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components: [
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Component(),
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Component(),
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],
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);
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final parentBlueprint = Blueprint(
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components: [
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Component(),
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Component(),
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],
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blueprints: [
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childBlueprint,
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],
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);
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});
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group('Forge2DBlueprint', () {
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setUpAll(() {
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registerFallbackValue(TestContactCallback());
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});
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test('callbacks can be added to it', () {
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final blueprint = MyForge2dBlueprint()..build(MockForge2DGame());
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expect(blueprint.callbacks.length, equals(3));
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});
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test('adds the callbacks to a game on attach', () async {
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final mockGame = MockForge2DGame();
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when(() => mockGame.addAll(any())).thenAnswer((_) async {});
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when(() => mockGame.addContactCallback(any())).thenAnswer((_) async {});
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await MyForge2dBlueprint().attach(mockGame);
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verify(() => mockGame.addContactCallback(any())).called(3);
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});
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test(
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'throws assertion error when adding to an already attached blueprint',
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() async {
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final mockGame = MockForge2DGame();
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when(() => mockGame.addAll(any())).thenAnswer((_) async {});
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when(() => mockGame.addContactCallback(any())).thenAnswer((_) async {});
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final blueprint = MyForge2dBlueprint();
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await blueprint.attach(mockGame);
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await game.addFromBlueprint(parentBlueprint);
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await game.ready();
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expect(
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() => blueprint.addContactCallback(MockContactCallback()),
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throwsAssertionError,
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);
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expect(
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() => blueprint.addAllContactCallback([MockContactCallback()]),
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throwsAssertionError,
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);
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},
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game.children,
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equals([
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...parentBlueprint.components,
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...childBlueprint.components,
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]),
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);
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});
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});
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}
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Reference in new issue