first commit

lib/components/score_text.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+
+class ScoreText extends StatefulWidget {
+  final int value;
+  final TextStyle? style;
+
+  const ScoreText({super.key, required this.value, this.style});
+
+  @override
+  State<ScoreText> createState() => _ScoreTextState();
+}
+
+class _ScoreTextState extends State<ScoreText>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _controller;
+  late Animation<double> _scale;
+  int _prev = 0;
+
+  @override
+  void initState() {
+    super.initState();
+    _prev = widget.value;
+    _controller = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 210),
+    );
+    _scale = const AlwaysStoppedAnimation(1.0);
+  }
+
+  @override
+  void didUpdateWidget(covariant ScoreText oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (widget.value == _prev) return;
+    final begin = widget.value > _prev ? 1.12 : 0.88;
+    _prev = widget.value;
+    _scale = TweenSequence<double>([
+      TweenSequenceItem(tween: Tween(begin: 1.0, end: begin), weight: 90),
+      TweenSequenceItem(tween: Tween(begin: begin, end: 1.0), weight: 120),
+    ]).animate(CurvedAnimation(parent: _controller, curve: Curves.easeOut));
+    _controller
+      ..reset()
+      ..forward();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedBuilder(
+      animation: _controller,
+      builder: (context, child) {
+        return Transform.scale(scale: _scale.value, child: child);
+      },
+      child: Text('${widget.value}', style: widget.style),
+    );
+  }
+}