feat: implemented GoogleLetterGame

packages/pinball_components/sandbox/lib/stories/ball/basic_ball_game.dart

@@ -9,7 +9,7 @@ class BasicBallGame extends BasicGame with TapDetector, Traceable {
   static const info = '''
     Shows how a Ball works.
       
-    Tap anywhere on the screen to spawn a ball into the game.
+    - Tap anywhere on the screen to spawn a ball into the game.
 ''';
 
   final Color color;

packages/pinball_components/sandbox/lib/stories/google_word/google_letter_game.dart

@@ -0,0 +1,36 @@
+import 'dart:ui';
+
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flutter/material.dart';
+import 'package:pinball_components/pinball_components.dart';
+import 'package:sandbox/stories/ball/basic_ball_game.dart';
+
+class GoogleLetterGame extends BasicBallGame {
+  GoogleLetterGame() : super(color: const Color(0xFF009900));
+
+  static const info = '''
+    Shows how a GoogleLetter is rendered.
+      
+    - Tap anywhere on the screen to spawn a ball into the game.
+''';
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+    addContactCallback(_BallGoogleLetterContactCallback());
+
+    camera.followVector2(Vector2.zero());
+    await add(GoogleLetter());
+
+    if (trace) await traceAllBodies();
+  }
+}
+
+class _BallGoogleLetterContactCallback
+    extends ContactCallback<Ball, GoogleLetter> {
+  @override
+  void begin(Ball<Forge2DGame> a, GoogleLetter b, Contact contact) {
+    super.begin(a, b, contact);
+    b.activate();
+  }
+}

packages/pinball_components/sandbox/lib/stories/stories.dart

@@ -5,6 +5,7 @@ export 'chrome_dino/stories.dart';
 export 'effects/stories.dart';
 export 'flipper/stories.dart';
 export 'flutter_forest/stories.dart';
+export 'google_word/stories.dart';
 export 'layer/stories.dart';
 export 'slingshot/stories.dart';
 export 'spaceship/stories.dart';