chore: removed FlipperGroup

lib/game/components/flipper.dart

@@ -8,42 +8,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:pinball/game/game.dart';
 
-/// {@template flipper_group}
-/// Loads a [Flipper.right] and a [Flipper.left].
-/// {@endtemplate}
-class FlipperGroup extends Component {
-  /// {@macro flipper_group}
-  FlipperGroup({
-    required this.position,
-    required this.spacing,
-  });
-
-  /// The amount of space between the [Flipper.right] and [Flipper.left].
-  final double spacing;
-
-  /// The position of this [FlipperGroup]
-  final Vector2 position;
-
-  @override
-  Future<void> onLoad() async {
-    final leftFlipper = Flipper.left(
-      position: Vector2(
-        position.x - (Flipper.width / 2) - (spacing / 2),
-        position.y,
-      ),
-    );
-    await add(leftFlipper);
-
-    final rightFlipper = Flipper.right(
-      position: Vector2(
-        position.x + (Flipper.width / 2) + (spacing / 2),
-        position.y,
-      ),
-    );
-    await add(rightFlipper);
-  }
-}
-
 /// {@template flipper}
 /// A bat, typically found in pairs at the bottom of the board.
 ///

test/game/components/flipper_test.dart

@@ -15,102 +15,6 @@ void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
   final flameTester = FlameTester(PinballGameTest.create);
 
-  group('FlipperGroup', () {
-    flameTester.test(
-      'loads correctly',
-      (game) async {
-        final flipperGroup = FlipperGroup(
-          position: Vector2.zero(),
-          spacing: 0,
-        );
-        await game.ensureAdd(flipperGroup);
-
-        expect(game.contains(flipperGroup), isTrue);
-      },
-    );
-
-    group('constructor', () {
-      flameTester.test(
-        'positions correctly',
-        (game) async {
-          final position = Vector2.all(10);
-          final flipperGroup = FlipperGroup(
-            position: position,
-            spacing: 0,
-          );
-          await game.ensureAdd(flipperGroup);
-
-          expect(flipperGroup.position, equals(position));
-        },
-      );
-    });
-
-    group('children', () {
-      bool Function(Component) flipperSelector(BoardSide side) =>
-          (component) => component is Flipper && component.side == side;
-
-      flameTester.test(
-        'has only one left Flipper',
-        (game) async {
-          final flipperGroup = FlipperGroup(
-            position: Vector2.zero(),
-            spacing: 0,
-          );
-          await game.ensureAdd(flipperGroup);
-
-          expect(
-            () => flipperGroup.children.singleWhere(
-              flipperSelector(BoardSide.left),
-            ),
-            returnsNormally,
-          );
-        },
-      );
-
-      flameTester.test(
-        'has only one right Flipper',
-        (game) async {
-          final flipperGroup = FlipperGroup(
-            position: Vector2.zero(),
-            spacing: 0,
-          );
-          await game.ensureAdd(flipperGroup);
-
-          expect(
-            () => flipperGroup.children.singleWhere(
-              flipperSelector(BoardSide.right),
-            ),
-            returnsNormally,
-          );
-        },
-      );
-
-      flameTester.test(
-        'spaced correctly',
-        (game) async {
-          final flipperGroup = FlipperGroup(
-            position: Vector2.zero(),
-            spacing: 2,
-          );
-          await game.ready();
-          await game.ensureAdd(flipperGroup);
-
-          final leftFlipper = flipperGroup.children.singleWhere(
-            flipperSelector(BoardSide.left),
-          ) as Flipper;
-          final rightFlipper = flipperGroup.children.singleWhere(
-            flipperSelector(BoardSide.right),
-          ) as Flipper;
-
-          expect(
-            leftFlipper.body.position.x + Flipper.width + flipperGroup.spacing,
-            equals(rightFlipper.body.position.x),
-          );
-        },
-      );
-    });
-  });
-
   group(
     'Flipper',
     () {

test/game/pinball_game_test.dart

@@ -54,10 +54,10 @@ void main() {
         },
       );
 
-      flameTester.test('has only one FlipperGroup', (game) async {
+      flameTester.test('has only one BottomGroup', (game) async {
         await game.ready();
         expect(
-          game.children.whereType<FlipperGroup>().length,
+          game.children.whereType<BottomGroup>().length,
           equals(1),
         );
       });