feat: phase 1 of improve

2026-07-08 00:17:46 +03:30
parent 0bd2b4a18a
commit ffd2646eea
6 changed files with 461 additions and 135 deletions
@@ -0,0 +1,119 @@
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+
+/// بارشِ کاغذرنگی (کانفتی) سبک و بدونِ وابستگی — برای صفحه‌ی بردِ بازی.
+class Confetti extends StatefulWidget {
+  final int count;
+  const Confetti({super.key, this.count = 60});
+
+  @override
+  State<Confetti> createState() => _ConfettiState();
+}
+
+class _ConfettiState extends State<Confetti> with SingleTickerProviderStateMixin {
+  late final AnimationController _c;
+  late final List<_Piece> _pieces;
+
+  static const _colors = [
+    Color(0xFFE9B949), // طلایی
+    Color(0xFF1E5FA8), // لاجوردی
+    Color(0xFFB81D2A), // شنگرف
+    Color(0xFF3FA34D), // سبز
+    Color(0xFFFFFFFF),
+  ];
+
+  @override
+  void initState() {
+    super.initState();
+    final r = math.Random();
+    _pieces = List.generate(widget.count, (_) {
+      return _Piece(
+        x: r.nextDouble(),
+        delay: r.nextDouble() * 0.5,
+        speed: 0.7 + r.nextDouble() * 0.6,
+        drift: (r.nextDouble() - 0.5) * 0.4,
+        size: 6 + r.nextDouble() * 7,
+        color: _colors[r.nextInt(_colors.length)],
+        rot: r.nextDouble() * math.pi,
+        rotSpeed: (r.nextDouble() - 0.5) * 12,
+        round: r.nextBool(),
+      );
+    });
+    _c = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 2600),
+    )..forward();
+  }
+
+  @override
+  void dispose() {
+    _c.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return IgnorePointer(
+      child: AnimatedBuilder(
+        animation: _c,
+        builder: (_, __) => CustomPaint(
+          size: Size.infinite,
+          painter: _ConfettiPainter(_pieces, _c.value),
+        ),
+      ),
+    );
+  }
+}
+
+class _Piece {
+  final double x, delay, speed, drift, size, rot, rotSpeed;
+  final Color color;
+  final bool round;
+  _Piece({
+    required this.x,
+    required this.delay,
+    required this.speed,
+    required this.drift,
+    required this.size,
+    required this.color,
+    required this.rot,
+    required this.rotSpeed,
+    required this.round,
+  });
+}
+
+class _ConfettiPainter extends CustomPainter {
+  final List<_Piece> pieces;
+  final double t; // ۰..۱
+  _ConfettiPainter(this.pieces, this.t);
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    for (final p in pieces) {
+      final local = ((t - p.delay) * p.speed).clamp(0.0, 1.0);
+      if (local <= 0) continue;
+      final y = -0.1 + local * 1.25;
+      final x = (p.x + p.drift * local) * size.width;
+      final py = y * size.height;
+      final opacity = (1.0 - local).clamp(0.0, 1.0);
+      final paint = Paint()..color = p.color.withValues(alpha: opacity);
+
+      canvas.save();
+      canvas.translate(x, py);
+      canvas.rotate(p.rot + p.rotSpeed * local);
+      if (p.round) {
+        canvas.drawCircle(Offset.zero, p.size / 2, paint);
+      } else {
+        canvas.drawRect(
+          Rect.fromCenter(center: Offset.zero, width: p.size, height: p.size * 0.6),
+          paint,
+        );
+      }
+      canvas.restore();
+    }
+  }
+
+  @override
+  bool shouldRepaint(covariant _ConfettiPainter old) => old.t != t;
+}