feat: added a new Ball on new state

lib/game/components/bonus_word.dart

@@ -20,13 +20,9 @@ class BonusWord extends Component with BlocComponent<GameBloc, GameState> {
 
   @override
   bool listenWhen(GameState? previousState, GameState newState) {
-    if ((previousState?.bonusHistory.length ?? 0) <
+    return (previousState?.bonusHistory.length ?? 0) <
             newState.bonusHistory.length &&
-        newState.bonusHistory.last == GameBonus.word) {
+        newState.bonusHistory.last == GameBonus.word;
-      return true;
-    }
-
-    return false;
   }
 
   @override

lib/game/components/flutter_forest.dart

@@ -13,7 +13,8 @@ import 'package:pinball/game/game.dart';
 /// is awarded, and the [_BigDashNestBumper] releases a new [Ball].
 /// {@endtemplate}
 // TODO(alestiago): Make a [Blueprint] once nesting [Blueprint] is implemented.
-class FlutterForest extends Component with HasGameRef<PinballGame> {
+class FlutterForest extends Component
+    with HasGameRef<PinballGame>, BlocComponent<GameBloc, GameState> {
   /// {@macro flutter_forest}
   FlutterForest({
     required this.position,
@@ -22,6 +23,19 @@ class FlutterForest extends Component with HasGameRef<PinballGame> {
   /// The position of the [FlutterForest] on the [Board].
   final Vector2 position;
 
+  @override
+  bool listenWhen(GameState? previousState, GameState newState) {
+    return (previousState?.bonusHistory.length ?? 0) <
+            newState.bonusHistory.length &&
+        newState.bonusHistory.last == GameBonus.dashNest;
+  }
+
+  @override
+  void onNewState(GameState state) {
+    super.onNewState(state);
+    gameRef.add(Ball()..initialPosition = position);
+  }
+
   @override
   Future<void> onLoad() async {
     gameRef.addContactCallback(_DashNestBumperBallContactCallback());
@@ -48,7 +62,7 @@ class FlutterForest extends Component with HasGameRef<PinballGame> {
 /// When hit, the [GameState.score] is increased.
 /// {@endtemplate}
 abstract class _DashNestBumper extends BodyComponent<PinballGame>
-    with BlocComponent<GameBloc, GameState>, ScorePoints, InitialPosition {
+    with ScorePoints, InitialPosition {
   /// {@template dash_nest_bumper}
   _DashNestBumper({required this.id});
 

test/game/components/flutter_forest_test.dart

@@ -5,11 +5,13 @@ import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:pinball/game/game.dart';
 
+import '../../helpers/helpers.dart';
+
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
   group('FlutterForest', () {
-    final flameTester = FlameTester(Forge2DGame.new);
+    final flameTester = FlameTester(PinballGameTest.create);
 
     flameTester.test(
       'loads correctly',
@@ -21,5 +23,23 @@ void main() {
         expect(game.contains(flutterForest), isTrue);
       },
     );
+
+    flameTester.test(
+      'adds a new ball onNewState',
+      (game) async {
+        await game.ready();
+        final flutterForest = FlutterForest(position: Vector2(0, 0));
+        await game.ensureAdd(flutterForest);
+
+        final previousBalls = game.descendants().whereType<Ball>().length;
+        flutterForest.onNewState(MockGameState());
+        await game.ready();
+
+        expect(
+          game.descendants().whereType<Ball>().length,
+          greaterThan(previousBalls),
+        );
+      },
+    );
   });
 }