refactor: pr suggestions

packages/pinball_components/lib/src/components/ball.dart

@@ -4,6 +4,7 @@ import 'dart:ui';
 
 import 'package:flame/components.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flutter/widgets.dart';
 import 'package:pinball_components/pinball_components.dart';
 
 /// {@template ball}
@@ -84,10 +85,10 @@ class Ball<T extends Forge2DGame> extends BodyComponent<T>
     body.gravityScale = Vector2(0, 1);
   }
 
-  /// Applies a boost and [_FlameEffect] on this [Ball].
+  /// Applies a boost and [_TurboChargeSpriteAnimation] on this [Ball].
   Future<void> boost(Vector2 impulse) async {
     body.linearVelocity = impulse;
-    await add(_FlameEffect());
+    await add(_TurboChargeSpriteAnimation());
   }
 
   @override
@@ -146,14 +147,15 @@ class _BallSpriteComponent extends SpriteComponent with HasGameRef {
   }
 }
 
-class _FlameEffect extends SpriteAnimationComponent with HasGameRef {
-  _FlameEffect()
+class _TurboChargeSpriteAnimation extends SpriteAnimationComponent
+    with HasGameRef {
+  _TurboChargeSpriteAnimation()
       : super(
           anchor: const Anchor(0.53, 0.72),
           priority: Ball.boardPriority + 1,
+          removeOnFinish: true,
         );
 
-  var _duration = 2.0;
   late final Vector2 _textureSize;
 
   @override
@@ -178,6 +180,7 @@ class _FlameEffect extends SpriteAnimationComponent with HasGameRef {
         amountPerRow: amountPerRow,
         stepTime: 1 / 24,
         textureSize: _textureSize,
+        loop: false,
       ),
     );
   }
@@ -192,11 +195,5 @@ class _FlameEffect extends SpriteAnimationComponent with HasGameRef {
       angle = math.atan2(direction.x, -direction.y);
       size = (_textureSize / 45) * body.fixtures.first.shape.radius;
     }
-
-    _duration -= dt;
-
-    if (_duration < 0) {
-      removeFromParent();
-    }
   }
 }

packages/pinball_components/test/src/components/ball_test.dart

@@ -175,7 +175,7 @@ void main() {
         expect(ball.body.linearVelocity.y, greaterThan(0));
       });
 
-      flameTester.test('adds FlameEffect', (game) async {
+      flameTester.test('adds TurboChargeSpriteAnimation', (game) async {
         final ball = Ball(baseColor: Colors.blue);
         await game.ensureAdd(ball);
 
@@ -188,22 +188,23 @@ void main() {
         );
       });
 
-      flameTester.test('removes FlameEffect after a duration', (game) async {
+      flameTester.test('removes TurboChargeSpriteAnimation after it finishes',
+          (game) async {
         final ball = Ball(baseColor: Colors.blue);
         await game.ensureAdd(ball);
 
         await ball.boost(Vector2.all(10));
         game.update(0);
 
-        final flameEffect =
+        final turboChargeSpriteAnimation =
             ball.children.whereType<SpriteAnimationComponent>().single;
 
-        expect(ball.contains(flameEffect), isTrue);
+        expect(ball.contains(turboChargeSpriteAnimation), isTrue);
 
-        game.update(3);
-        await game.ready();
+        game.update(turboChargeSpriteAnimation.animation!.totalDuration());
+        game.update(0.1);
 
-        expect(ball.contains(flameEffect), isFalse);
+        expect(ball.contains(turboChargeSpriteAnimation), isFalse);
       });
     });
   });