fix(player): 优化双击飘心轨迹

lib/pages/player/widgets/home_feed_overlay.dart

@@ -130,6 +130,7 @@ class _HomeFeedOverlayState extends State<HomeFeedOverlay> {
         children: [
           Positioned.fill(
             child: PlayerTapGestureRegion(
+              key: const ValueKey('home-feed-tap-gesture-region'),
               gestureKey: const Key('home-feed-gesture'),
               episodeId: widget.episode.id,
               enabled: !_scrubbing,

lib/pages/player/widgets/player_double_tap_hearts.dart

@@ -1,33 +1,34 @@
 // Author: fruit.com.cn
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../../../core/theme/app_colors.dart';
 
-const int _heartDurationMs = 1300;
-const int _lastHeartDelayMs = 200;
-const double _heartPopPortion = 0.18;
+const int _heartDurationMs = 1900;
+const int _lastHeartDelayMs = 260;
+const double _heartPopPortion = 0.12;
 const double _heartStartScale = 0.7;
-const double _heartHoldPortion = 0.65;
+const double _heartHoldPortion = 0.45;
 
 const List<_HeartParticle> _hearts = [
   _HeartParticle(
     delay: 0,
-    travel: 175,
+    travel: 120,
     drift: 0,
     size: 44,
     color: AppColors.doubleTapHeartRed,
   ),
   _HeartParticle(
-    delay: 110,
-    travel: 150,
+    delay: 140,
+    travel: 120,
     drift: -32,
     size: 34,
     color: AppColors.doubleTapHeartPink,
   ),
   _HeartParticle(
     delay: _lastHeartDelayMs,
-    travel: 165,
+    travel: 120,
     drift: 30,
     size: 38,
     color: AppColors.doubleTapHeartRed,
@@ -36,7 +37,11 @@ const List<_HeartParticle> _hearts = [
 
 /// 双击点赞时，在点击位置飘出一小簇心。
 class PlayerDoubleTapHeartBurst extends StatefulWidget {
-  const PlayerDoubleTapHeartBurst({super.key, required this.onCompleted});
+  const PlayerDoubleTapHeartBurst({
+    super.key,
+    required this.burstId,
+    required this.onCompleted,
+  });
 
   static const int particleCount = 3;
   static const int singleHeartDurationMs = _heartDurationMs;
@@ -44,6 +49,7 @@ class PlayerDoubleTapHeartBurst extends StatefulWidget {
     milliseconds: _lastHeartDelayMs + _heartDurationMs,
   );
 
+  final int burstId;
   final VoidCallback onCompleted;
 
   @override
@@ -54,11 +60,17 @@ class PlayerDoubleTapHeartBurst extends StatefulWidget {
 class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
     with SingleTickerProviderStateMixin {
   late final AnimationController _controller;
+  final Stopwatch _lifetime = Stopwatch();
   bool _completed = false;
 
   @override
   void initState() {
     super.initState();
+    _lifetime.start();
+    if (kDebugMode) {
+      debugPrint('[player] phase=heart-burst-init id=${widget.burstId}');
+      debugPrint('[player] phase=heart-burst-start id=${widget.burstId}');
+    }
     final total = _hearts
         .map((heart) => heart.delay + _heartDurationMs)
         .reduce((left, right) => left > right ? left : right);
@@ -72,11 +84,26 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
   void _onStatus(AnimationStatus status) {
     if (status != AnimationStatus.completed || _completed) return;
     _completed = true;
+    if (kDebugMode) {
+      final elapsedMs = _controller.duration?.inMilliseconds ?? 0;
+      debugPrint(
+        '[player] phase=heart-burst-complete '
+        'id=${widget.burstId} elapsedMs=$elapsedMs',
+      );
+    }
     widget.onCompleted();
   }
 
   @override
   void dispose() {
+    if (kDebugMode) {
+      debugPrint(
+        '[player] phase=heart-burst-dispose '
+        'id=${widget.burstId} elapsedMs=${_lifetime.elapsedMilliseconds} '
+        'completed=${_completed ? 1 : 0}',
+      );
+    }
+    _lifetime.stop();
     _controller
       ..removeStatusListener(_onStatus)
       ..dispose();
@@ -111,14 +138,17 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
       1.0,
     );
     if (progress <= 0) return const SizedBox.shrink();
-    final move = Curves.easeOutCubic.transform(progress);
+    final move = Curves.easeOutSine.transform(progress);
     final scale = progress < _heartPopPortion
         ? _heartStartScale +
               (1 - _heartStartScale) * (progress / _heartPopPortion)
         : 1.0;
     final opacity = progress < _heartHoldPortion
         ? 1.0
-        : 1 - ((progress - _heartHoldPortion) / (1 - _heartHoldPortion));
+        : 1 -
+              Curves.easeInOutSine.transform(
+                (progress - _heartHoldPortion) / (1 - _heartHoldPortion),
+              );
     return Positioned(
       left: heart.drift * move - heart.size / 2,
       top: -heart.size / 2 - heart.travel * move,

lib/pages/player/widgets/player_overlay.dart

@@ -59,6 +59,7 @@ class PlayerPlaybackOverlay extends StatelessWidget {
         children: [
           Positioned.fill(
             child: PlayerTapGestureRegion(
+              key: const ValueKey('player-tap-gesture-region'),
               gestureKey: const Key('player-video-tap'),
               episodeId: data.episode.id,
               enabled: !scrubbing,

lib/pages/player/widgets/player_tap_gesture_region.dart

@@ -93,6 +93,7 @@ class _PlayerTapGestureRegionState extends State<PlayerTapGestureRegion> {
                             top: burst.position.dy - 10,
                             child: PlayerDoubleTapHeartBurst(
                               key: ValueKey(burst.id),
+                              burstId: burst.id,
                               onCompleted: () => _removeHeartBurst(burst.id),
                             ),
                           ),

test/player/double_tap_like_test.dart

@@ -6,6 +6,8 @@ import 'package:fruitshorts/core/data/services/interaction_controller.dart';
 import 'package:fruitshorts/core/theme/app_theme.dart';
 import 'package:fruitshorts/l10n/app_localizations.dart';
 import 'package:fruitshorts/pages/player/widgets/home_feed_overlay.dart';
+import 'package:fruitshorts/pages/player/widgets/player_double_tap_hearts.dart';
+import 'package:fruitshorts/pages/player/widgets/player_tap_gesture_region.dart';
 
 import '../support/fake_catalog.dart';
 import '../support/fake_haptics.dart';
@@ -91,7 +93,7 @@ void main() {
     await tester.tapAt(center);
     await tester.pump();
     expect(repository.likeTargets, hasLength(1));
-    await tester.pump(const Duration(milliseconds: 1600));
+    await tester.pump(const Duration(milliseconds: 2300));
 
     clock.advance(const Duration(milliseconds: 500));
     await tester.pump(const Duration(milliseconds: 500));
@@ -107,6 +109,40 @@ void main() {
     expect(key.currentState!.pauseToggles, 0);
     expect(find.byKey(const Key('double-tap-heart-0')), findsOneWidget);
   });
+
+  testWidgets('parent rebuild keeps the heart burst state alive', (
+    tester,
+  ) async {
+    final key = GlobalKey<_HarnessState>();
+    final clock = _TestClock();
+    await _pumpHarness(
+      tester,
+      FakeInteractionRepository(),
+      FakeHaptics(),
+      key,
+      clock,
+    );
+    final center = tester.getCenter(find.byKey(const Key('home-feed-gesture')));
+
+    await tester.tapAt(center);
+    clock.advance(const Duration(milliseconds: 100));
+    await tester.pump(const Duration(milliseconds: 100));
+    await tester.tapAt(center);
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    final gestureFinder = find.byType(PlayerTapGestureRegion);
+    final burstFinder = find.byType(PlayerDoubleTapHeartBurst);
+    final gestureState = tester.state(gestureFinder);
+    final burstState = tester.state(burstFinder);
+
+    key.currentState!.rebuild();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(tester.state(gestureFinder), same(gestureState));
+    expect(tester.state(burstFinder), same(burstState));
+    expect(find.byKey(const Key('double-tap-heart-0')), findsOneWidget);
+  });
 }
 
 Future<void> _pumpHarness(
@@ -155,6 +191,8 @@ class _HarnessState extends State<_Harness> {
   );
   int pauseToggles = 0;
 
+  void rebuild() => setState(() {});
+
   Future<void> _like({bool likeOnly = false}) async {
     await widget.haptics.lightImpact();
     final episodeId = demoDramas.first.episodes.first.id;

test/player/player_double_tap_hearts_test.dart

@@ -10,7 +10,9 @@ void main() {
   ) async {
     await tester.pumpWidget(
       const MaterialApp(
-        home: Scaffold(body: PlayerDoubleTapHeartBurst(onCompleted: _noop)),
+        home: Scaffold(
+          body: PlayerDoubleTapHeartBurst(burstId: 1, onCompleted: _noop),
+        ),
       ),
     );
     await tester.pump(const Duration(milliseconds: 300));
@@ -33,10 +35,10 @@ void main() {
   });
 
   test('heart burst stays long and sparse', () {
-    expect(PlayerDoubleTapHeartBurst.singleHeartDurationMs, 1300);
+    expect(PlayerDoubleTapHeartBurst.singleHeartDurationMs, 1900);
     expect(
       PlayerDoubleTapHeartBurst.animationDuration,
-      greaterThanOrEqualTo(const Duration(milliseconds: 1200)),
+      greaterThanOrEqualTo(const Duration(milliseconds: 1800)),
     );
     expect(PlayerDoubleTapHeartBurst.particleCount, lessThanOrEqualTo(4));
     expect(PlayerDoubleTapHeartBurst.particleCount, 3);

test/player/player_fullscreen_test.dart

@@ -699,7 +699,7 @@ void main() {
       AppColors.doubleTapHeartRed,
     );
 
-    await tester.pump(const Duration(milliseconds: 1600));
+    await tester.pump(const Duration(milliseconds: 2300));
     expect(find.byKey(const Key('double-tap-heart-0')), findsNothing);
     expect(logic.session.userWantsPlay, isTrue);
   });