chore: remove unnecessary wrapper

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

@@ -1,6 +1,5 @@
 import 'package:flame/components.dart';
 import 'package:flame_bloc/flame_bloc.dart';
-import 'package:flutter/material.dart';
 import 'package:pinball_components/pinball_components.dart';
 import 'package:pinball_flame/pinball_flame.dart';
 
@@ -12,31 +11,12 @@ enum GoogleLetterSpriteState {
 /// {@template google_letter}
 /// Circular decal that represents a letter in "GOOGLE" for a given index.
 /// {@endtemplate}
-class GoogleLetter extends PositionComponent {
+class GoogleLetter extends SpriteGroupComponent<GoogleLetterSpriteState>
+    with HasGameRef, FlameBlocListenable<GoogleWordCubit, GoogleWordState> {
   /// {@macro google_letter}
   GoogleLetter(int index)
-      : super(
-          children: [
-            GoogleLetterSpriteGroupComponent(
-              litAssetPath: _spritePaths[index][GoogleLetterSpriteState.lit]!,
-              dimmedAssetPath: _spritePaths[index]
-                  [GoogleLetterSpriteState.dimmed]!,
-              index: index,
-            ),
-          ],
-        );
-}
-
-@visibleForTesting
-class GoogleLetterSpriteGroupComponent
-    extends SpriteGroupComponent<GoogleLetterSpriteState>
-    with HasGameRef, FlameBlocListenable<GoogleWordCubit, GoogleWordState> {
-  GoogleLetterSpriteGroupComponent({
-    required String litAssetPath,
-    required String dimmedAssetPath,
-    required int index,
-  })  : _litAssetPath = litAssetPath,
-        _dimmedAssetPath = dimmedAssetPath,
+      : _litAssetPath = _spritePaths[index][GoogleLetterSpriteState.lit]!,
+        _dimmedAssetPath = _spritePaths[index][GoogleLetterSpriteState.dimmed]!,
         _index = index,
         super(anchor: Anchor.center);
 

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

@@ -107,7 +107,7 @@ void main() {
       expect(() => GoogleLetter(6), throwsA(isA<RangeError>()));
     });
 
-    group('GoogleLetterSpriteGroupComponent', () {
+    group('sprite', () {
       const firstLetterLitState = GoogleWordState(
         letterSpriteStates: {
           0: GoogleLetterSpriteState.lit,
@@ -125,11 +125,8 @@ void main() {
           final googleLetter = GoogleLetter(0);
           await game.pump(googleLetter);
 
-          final googleLetterSpriteGroup =
-              googleLetter.firstChild<GoogleLetterSpriteGroupComponent>()!;
-
           expect(
-            googleLetterSpriteGroup.listenWhen(
+            googleLetter.listenWhen(
               GoogleWordState.initial(),
               firstLetterLitState,
             ),
@@ -144,14 +141,12 @@ void main() {
           final googleLetter = GoogleLetter(0);
           await game.pump(googleLetter);
 
-          final googleLetterSpriteGroup =
-              googleLetter.firstChild<GoogleLetterSpriteGroupComponent>()!;
-          final originalSprite = googleLetterSpriteGroup.current;
+          final originalSprite = googleLetter.current;
 
-          googleLetterSpriteGroup.onNewState(firstLetterLitState);
+          googleLetter.onNewState(firstLetterLitState);
           await game.ready();
 
-          final newSprite = googleLetterSpriteGroup.current;
+          final newSprite = googleLetter.current;
           expect(newSprite != originalSprite, isTrue);
         },
       );