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83 lines
2.4 KiB
83 lines
2.4 KiB
import 'package:flame/components.dart';
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import 'package:flame_forge2d/flame_forge2d.dart';
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import 'package:pinball/game/game.dart';
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import 'package:pinball/gen/assets.gen.dart';
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/// {@template ball}
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/// A solid, [BodyType.dynamic] sphere that rolls and bounces along the
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/// [PinballGame].
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/// {@endtemplate}
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class Ball extends BodyComponent<PinballGame> with InitialPosition, Layered {
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/// {@macro ball}
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Ball() {
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// TODO(ruimiguel): while developing Ball can be launched by clicking mouse,
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// and default layer is Layer.all. But on final game Ball will be always be
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// be launched from Plunger and LauncherRamp will modify it to Layer.board.
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// We need to see what happens if Ball appears from other place like nest
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// bumper, it will need to explicit change layer to Layer.board then.
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layer = Layer.board;
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}
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/// The size of the [Ball]
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final Vector2 size = Vector2.all(2);
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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 sprite = await gameRef.loadSprite(Assets.images.components.ball.path);
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final tint = gameRef.theme.characterTheme.ballColor.withOpacity(0.5);
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await add(
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SpriteComponent(
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sprite: sprite,
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size: size,
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anchor: Anchor.center,
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)..tint(tint),
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);
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}
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@override
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Body createBody() {
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final shape = CircleShape()..radius = size.x / 2;
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final fixtureDef = FixtureDef(shape)..density = 1;
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final bodyDef = BodyDef()
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..position = initialPosition
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..userData = this
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..type = BodyType.dynamic;
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return world.createBody(bodyDef)..createFixture(fixtureDef);
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}
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/// Removes the [Ball] from a [PinballGame]; spawning a new [Ball] if
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/// any are left.
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///
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/// Triggered by [BottomWallBallContactCallback] when the [Ball] falls into
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/// a [BottomWall].
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void lost() {
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shouldRemove = true;
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final bloc = gameRef.read<GameBloc>()..add(const BallLost());
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final shouldBallRespwan = !bloc.state.isLastBall && !bloc.state.isGameOver;
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if (shouldBallRespwan) {
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gameRef.spawnBall();
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}
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}
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/// Immediatly and completly [stop]s the ball.
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///
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/// The [Ball] will no longer be affected by any forces, including it's
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/// weight and those emitted from collisions.
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void stop() {
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body.setType(BodyType.static);
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}
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/// Allows the [Ball] to be affected by forces.
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///
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/// If previously [stop]ed, the previous ball's velocity is not kept.
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void resume() {
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body.setType(BodyType.dynamic);
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}
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}
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