chore: set max score (#408)

lib/game/bloc/game_bloc.dart

@@ -16,6 +16,8 @@ class GameBloc extends Bloc<GameEvent, GameState> {
     on<GameStarted>(_onGameStarted);
   }
 
+  static const _maxScore = 9999999999;
+
   void _onGameStarted(GameStarted _, Emitter emit) {
     emit(state.copyWith(status: GameStatus.playing));
   }
@@ -25,7 +27,10 @@ class GameBloc extends Bloc<GameEvent, GameState> {
   }
 
   void _onRoundLost(RoundLost event, Emitter emit) {
-    final score = state.totalScore + state.roundScore * state.multiplier;
+    final score = math.min(
+      state.totalScore + state.roundScore * state.multiplier,
+      _maxScore,
+    );
     final roundsLeft = math.max(state.rounds - 1, 0);
 
     emit(
@@ -41,9 +46,11 @@ class GameBloc extends Bloc<GameEvent, GameState> {
 
   void _onScored(Scored event, Emitter emit) {
     if (state.status.isPlaying) {
-      emit(
-        state.copyWith(roundScore: state.roundScore + event.points),
+      final combinedScore = math.min(
+        state.totalScore + state.roundScore + event.points,
+        _maxScore,
       );
+      emit(state.copyWith(roundScore: combinedScore - state.totalScore));
     }
   }
 

test/game/bloc/game_bloc_test.dart

@@ -91,6 +91,28 @@ void main() {
         ],
       );
 
+      blocTest<GameBloc, GameState>(
+        "multiplier doesn't increase score above the max score",
+        build: GameBloc.new,
+        seed: () => const GameState(
+          totalScore: 9999999998,
+          roundScore: 1,
+          multiplier: 2,
+          rounds: 1,
+          bonusHistory: [],
+          status: GameStatus.playing,
+        ),
+        act: (bloc) => bloc.add(const RoundLost()),
+        expect: () => [
+          isA<GameState>()
+            ..having(
+              (state) => state.totalScore,
+              'totalScore',
+              9999999999,
+            )
+        ],
+      );
+
       blocTest<GameBloc, GameState>(
         'resets multiplier when round is lost',
         build: GameBloc.new,
@@ -167,6 +189,23 @@ void main() {
             ),
         ],
       );
+
+      blocTest<GameBloc, GameState>(
+        "doesn't increase score above the max score",
+        build: GameBloc.new,
+        seed: () => const GameState(
+          totalScore: 9999999998,
+          roundScore: 0,
+          multiplier: 1,
+          rounds: 1,
+          bonusHistory: [],
+          status: GameStatus.playing,
+        ),
+        act: (bloc) => bloc.add(const Scored(points: 2)),
+        expect: () => [
+          isA<GameState>()..having((state) => state.roundScore, 'roundScore', 1)
+        ],
+      );
     });
 
     group('MultiplierIncreased', () {