Animate while picking next move

android/gradle.properties

 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-app.versionName=0.0.14
-app.versionCode=14
+app.versionName=0.0.15
+app.versionCode=15

fastlane/metadata/android/en-US/changelogs/15.txt

+Animate while picking next move.

fastlane/metadata/android/fr-FR/changelogs/15.txt

+Animation pendant la sélection du prochain mouvement.

lib/ui/widgets/game.dart

+import 'dart:async';
+import 'dart:math';
+
 import 'package:audioplayers/audioplayers.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -15,14 +18,43 @@ class Game extends StatefulWidget {
 
 class _GameState extends State<Game> {
   final player = AudioPlayer();
+  bool shuffling = false;
+  Move? shuffledMove;
 
-  @override
-  Widget build(BuildContext context) {
-    return BlocBuilder<GameCubit, GameState>(
-      builder: (BuildContext context, GameState gameState) {
-        return GestureDetector(
-          child: ShowMove(move: gameState.move ?? Move.createNull()),
-          onTap: () {
+  void animate() {
+    const interval = const Duration(milliseconds: 200);
+    int iterationsLeft = 10;
+
+    shuffling = true;
+    shuffledMove = null;
+
+    setState(() {});
+    Timer.periodic(
+      interval,
+      (Timer timer) {
+        if (iterationsLeft > 1) {
+          shuffledMove = Move.pickRandom();
+        }
+
+        if (iterationsLeft == 1) {
+          shuffledMove = null;
+        }
+
+        if (iterationsLeft == 0) {
+          shuffledMove = null;
+          pickNewMove();
+
+          timer.cancel();
+          shuffling = false;
+        }
+
+        setState(() {});
+        iterationsLeft--;
+      },
+    );
+  }
+
+  void pickNewMove() {
     Move newMove = Move.pickRandom();
 
     BlocProvider.of<GameCubit>(context).setValues(
@@ -30,6 +62,21 @@ class _GameState extends State<Game> {
     );
 
     player.play(AssetSource(newMove.toSoundAsset()));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return BlocBuilder<GameCubit, GameState>(
+      builder: (BuildContext context, GameState gameState) {
+        return GestureDetector(
+          child: shuffling
+              ? Transform.rotate(
+                  angle: 2 * pi * Random().nextDouble(),
+                  child: ShowMove(move: shuffledMove ?? Move.createNull()),
+                )
+              : ShowMove(move: gameState.move ?? Move.createNull()),
+          onTap: () {
+            animate();
           },
         );
       },

pubspec.yaml

@@ -3,7 +3,7 @@ description: twister game companion
 
 publish_to: 'none'
 
-version: 0.0.14+14
+version: 0.0.15+15
 
 environment:
   sdk: '^3.0.0'