test: fix contact callback tests

lib/game/components/sparky_fire_zone.dart

@@ -106,6 +106,6 @@ class SparkyComputerSensorBallContactCallback
   @override
   void begin(_, ControlledBall controlledBall, __) {
     controlledBall.controller.turboCharge();
-    // ball.gameRef.firstChild<SparkyAnimatronic>()?.playing = true;
+    controlledBall.gameRef.firstChild<SparkyAnimatronic>()?.playing = true;
   }
 }

lib/game/game_assets.dart

@@ -81,6 +81,8 @@ extension PinballGameAssetsX on PinballGame {
       images.load(components.Assets.images.chromeDino.mouth.keyName),
       images.load(components.Assets.images.chromeDino.head.keyName),
       images.load(components.Assets.images.sparky.computer.top.keyName),
+      images.load(components.Assets.images.sparky.computer.base.keyName),
+      images.load(components.Assets.images.sparky.animatronic.keyName),
       images.load(components.Assets.images.sparky.bumper.a.inactive.keyName),
       images.load(components.Assets.images.sparky.bumper.b.active.keyName),
       images.load(components.Assets.images.sparky.bumper.b.inactive.keyName),

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

@@ -17,7 +17,7 @@ class SparkyAnimatronic extends SpriteAnimationComponent with HasGameRef {
   Future<void> onLoad() async {
     await super.onLoad();
 
-    final spriteSheet = await gameRef.images.load(
+    final spriteSheet = gameRef.images.fromCache(
       Assets.images.sparky.animatronic.keyName,
     );
 

test/game/components/sparky_fire_zone_test.dart

@@ -21,6 +21,7 @@ void main() {
     Assets.images.sparky.bumper.b.inactive.keyName,
     Assets.images.sparky.bumper.c.active.keyName,
     Assets.images.sparky.bumper.c.inactive.keyName,
+    Assets.images.sparky.animatronic.keyName,
   ];
   final flameTester = FlameTester(() => EmptyPinballTestGame(assets));
 
@@ -128,36 +129,39 @@ void main() {
     });
   });
 
-  group(
-    'SparkyTurboChargeSensorBallContactCallback',
-    () {
-      // TODO(alestiago): Make tests pass.
-      flameTester.test('calls turboCharge', (game) async {
-        final callback = SparkyComputerSensorBallContactCallback();
-        final ball = MockControlledBall();
-        when(() => ball.controller).thenReturn(MockBallController());
-        when(() => ball.gameRef).thenReturn(game);
+  group('SparkyTurboChargeSensorBallContactCallback', () {
+    flameTester.test('calls turboCharge', (game) async {
+      final callback = SparkyComputerSensorBallContactCallback();
+      final ball = MockControlledBall();
+      final controller = MockBallController();
+      when(() => ball.controller).thenReturn(controller);
+      when(() => ball.gameRef).thenReturn(game);
+      when(controller.turboCharge).thenAnswer((_) async {});
 
-        await game.ready();
-        callback.begin(MockSparkyComputerSensor(), ball, MockContact());
+      callback.begin(MockSparkyComputerSensor(), ball, MockContact());
 
-        verify(() => ball.controller.turboCharge()).called(1);
-      });
+      verify(() => ball.controller.turboCharge()).called(1);
+    });
 
-      flameTester.test('plays DashAnimatronic', (game) async {
-        final callback = SparkyComputerSensorBallContactCallback();
-        final ball = MockControlledBall();
-        when(() => ball.gameRef).thenReturn(game);
-        when(() => ball.controller).thenReturn(MockBallController());
-        final dashAnimatronic = DashAnimatronic();
-        await game.ensureAdd(dashAnimatronic);
+    flameTester.test('plays SparkyAnimatronic', (game) async {
+      final callback = SparkyComputerSensorBallContactCallback();
+      final ball = MockControlledBall();
+      final controller = MockBallController();
+      when(() => ball.controller).thenReturn(controller);
+      when(() => ball.gameRef).thenReturn(game);
+      when(controller.turboCharge).thenAnswer((_) async {});
 
-        expect(dashAnimatronic.playing, isFalse);
-        callback.begin(MockSparkyComputerSensor(), ball, MockContact());
-        await game.ready();
+      final sparkyFireZone = SparkyFireZone();
+      await game.addFromBlueprint(sparkyFireZone);
+      await game.ready();
 
-        expect(dashAnimatronic.playing, isTrue);
-      });
-    },
-  );
+      final sparkyAnimatronic =
+          game.descendants().whereType<SparkyAnimatronic>().single;
+
+      expect(sparkyAnimatronic.playing, isFalse);
+      callback.begin(MockSparkyComputerSensor(), ball, MockContact());
+
+      expect(sparkyAnimatronic.playing, isTrue);
+    });
+  });
 }

test/game/pinball_game_test.dart

@@ -33,6 +33,7 @@ void main() {
     Assets.images.sparky.bumper.b.inactive.keyName,
     Assets.images.sparky.bumper.c.active.keyName,
     Assets.images.sparky.bumper.c.inactive.keyName,
+    Assets.images.sparky.animatronic.keyName,
     Assets.images.spaceship.ramp.boardOpening.keyName,
     Assets.images.spaceship.ramp.railingForeground.keyName,
     Assets.images.spaceship.ramp.railingBackground.keyName,