feat: add game graphic

lib/feature/wallet/presentation/screen/lobby_screen.dart

@@ -13,6 +13,7 @@ import '../bloc/wallet_bloc.dart';
 import '../bloc/wallet_event.dart';
 import '../bloc/wallet_state.dart';
 import '../bloc/wallet_status.dart';
+import '../widgets/coin_fly.dart';
 import '../widgets/streak_dialog.dart';
 
 /// لابی اصلی: کیف‌پول، دکمه بازی/دورهمی/فروشگاه/سکه روزانه.
@@ -24,6 +25,9 @@ class LobbyScreen extends StatefulWidget {
 }
 
 class _LobbyScreenState extends State<LobbyScreen> {
+  final _coinKey = GlobalKey(); // چیپِ سکه (مقصدِ پروازِ سکه‌ها)
+  final _dailyKey = GlobalKey(); // کارتِ هدیه‌ی روزانه (مبدأ)
+
   @override
   void initState() {
     super.initState();
@@ -32,6 +36,20 @@ class _LobbyScreenState extends State<LobbyScreen> {
 
   void _reload() => context.read<WalletBloc>().add(LoadWalletEvent());
 
+  Offset? _center(GlobalKey k) {
+    final box = k.currentContext?.findRenderObject() as RenderBox?;
+    if (box == null || !box.attached) return null;
+    return box.localToGlobal(box.size.center(Offset.zero));
+  }
+
+  void _flyCoins() {
+    final from = _center(_dailyKey);
+    final to = _center(_coinKey);
+    if (from != null && to != null && mounted) {
+      CoinFly.play(context, from: from, to: to);
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -41,6 +59,7 @@ class _LobbyScreenState extends State<LobbyScreen> {
           listener: (context, state) {
             final d = state.dailyStatus;
             if (d is DailySuccess) {
+              _flyCoins(); // پروازِ سکه‌ها از کارتِ هدیه به چیپِ سکه
               ScaffoldMessenger.of(context).showSnackBar(
                 SnackBar(content: Text('سکه روزانه دریافت شد: +${d.amount}')),
               );
@@ -56,7 +75,10 @@ class _LobbyScreenState extends State<LobbyScreen> {
             return SafeArea(
               child: Column(
                 children: [
-                  _TopBar(wallet: wallet, onCoinTap: () => _openShop(context)),
+                  _TopBar(
+                      wallet: wallet,
+                      coinKey: _coinKey,
+                      onCoinTap: () => _openShop(context)),
                   Expanded(
                     child: SingleChildScrollView(
                       padding: const EdgeInsets.fromLTRB(16, 6, 16, 8),
@@ -121,6 +143,7 @@ class _LobbyScreenState extends State<LobbyScreen> {
                           ),
                           const SizedBox(height: 14),
                           _DailyCard(
+                            key: _dailyKey,
                             wallet: wallet,
                             onTap:
                                 () => StreakDialog.show(
@@ -347,7 +370,7 @@ class _ActionTile extends StatelessWidget {
 class _DailyCard extends StatelessWidget {
   final WalletEntity? wallet;
   final VoidCallback onTap;
-  const _DailyCard({required this.wallet, required this.onTap});
+  const _DailyCard({super.key, required this.wallet, required this.onTap});
 
   @override
   Widget build(BuildContext context) {
@@ -478,7 +501,8 @@ class _DailyCard extends StatelessWidget {
 class _TopBar extends StatelessWidget {
   final WalletEntity? wallet;
   final VoidCallback onCoinTap;
-  const _TopBar({required this.wallet, required this.onCoinTap});
+  final Key? coinKey;
+  const _TopBar({required this.wallet, required this.onCoinTap, this.coinKey});
 
   @override
   Widget build(BuildContext context) {
@@ -582,6 +606,7 @@ class _TopBar extends StatelessWidget {
           ),
           const SizedBox(width: 8),
           GestureDetector(
+            key: coinKey,
             onTap: onCoinTap,
             child: StatChip(
               icon: Icons.monetization_on,

lib/feature/wallet/presentation/widgets/coin_fly.dart

@@ -0,0 +1,135 @@
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+
+import '../../../../core/theme/app_theme.dart';
+
+/// انیمیشنِ «پروازِ سکه‌ها به کیف‌پول»: چند سکه از مبدأ (مثلاً کارتِ هدیه) روی یک
+/// قوس به سمتِ مقصد (چیپِ سکه) پرواز می‌کنند. با Overlay نمایش داده می‌شود.
+class CoinFly {
+  static void play(
+    BuildContext context, {
+    required Offset from,
+    required Offset to,
+    int count = 9,
+  }) {
+    final overlay = Overlay.maybeOf(context, rootOverlay: true);
+    if (overlay == null) return;
+    late OverlayEntry entry;
+    entry = OverlayEntry(
+      builder: (_) => _CoinFlyOverlay(
+        from: from,
+        to: to,
+        count: count,
+        onDone: () => entry.remove(),
+      ),
+    );
+    overlay.insert(entry);
+  }
+}
+
+class _CoinFlyOverlay extends StatefulWidget {
+  final Offset from, to;
+  final int count;
+  final VoidCallback onDone;
+  const _CoinFlyOverlay({
+    required this.from,
+    required this.to,
+    required this.count,
+    required this.onDone,
+  });
+
+  @override
+  State<_CoinFlyOverlay> createState() => _CoinFlyOverlayState();
+}
+
+class _CoinFlyOverlayState extends State<_CoinFlyOverlay>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _c;
+  late final List<_Coin> _coins;
+
+  @override
+  void initState() {
+    super.initState();
+    final r = math.Random();
+    _coins = List.generate(widget.count, (_) {
+      return _Coin(
+        jitter: Offset((r.nextDouble() - 0.5) * 46, (r.nextDouble() - 0.5) * 46),
+        delay: r.nextDouble() * 0.28,
+        arc: -60 - r.nextDouble() * 90, // ارتفاعِ قوس (به بالا)
+        size: 16 + r.nextDouble() * 8,
+      );
+    });
+    _c = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 950),
+    )
+      ..addStatusListener((s) {
+        if (s == AnimationStatus.completed) widget.onDone();
+      })
+      ..forward();
+  }
+
+  @override
+  void dispose() {
+    _c.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return IgnorePointer(
+      child: AnimatedBuilder(
+        animation: _c,
+        builder: (_, __) {
+          return Stack(
+            children: [
+              for (final coin in _coins) _buildCoin(coin),
+            ],
+          );
+        },
+      ),
+    );
+  }
+
+  Widget _buildCoin(_Coin coin) {
+    final local = ((_c.value - coin.delay) / (1 - coin.delay)).clamp(0.0, 1.0);
+    if (local <= 0) return const SizedBox.shrink();
+    final start = widget.from + coin.jitter;
+    final end = widget.to;
+    // قوسِ درجه‌دو: نقطه‌ی کنترل بالای میانه.
+    final mid = Offset((start.dx + end.dx) / 2, (start.dy + end.dy) / 2 + coin.arc);
+    final t = Curves.easeInCubic.transform(local);
+    final p = _quad(start, mid, end, t);
+    final opacity = local < 0.85 ? 1.0 : (1 - (local - 0.85) / 0.15);
+    final scale = 1.0 - 0.35 * local;
+    return Positioned(
+      left: p.dx - coin.size / 2,
+      top: p.dy - coin.size / 2,
+      child: Opacity(
+        opacity: opacity.clamp(0.0, 1.0),
+        child: Transform.scale(
+          scale: scale,
+          child: Icon(Icons.monetization_on,
+              color: AppColors.gold, size: coin.size),
+        ),
+      ),
+    );
+  }
+
+  Offset _quad(Offset a, Offset b, Offset c, double t) {
+    final u = 1 - t;
+    return a * (u * u) + b * (2 * u * t) + c * (t * t);
+  }
+}
+
+class _Coin {
+  final Offset jitter;
+  final double delay, arc, size;
+  _Coin({
+    required this.jitter,
+    required this.delay,
+    required this.arc,
+    required this.size,
+  });
+}