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Flutterでバトルシップパズルを作成する4

Last updated at Posted at 2021-09-23

概要

Flutterでバトルシップパズルを作成する
スクリーンサイズと向きを考慮する
効果音を入れる

実行環境

Mac

$ sw_vers
ProductName:    macOS
ProductVersion: 11.6
BuildVersion:   20G165

Flutter

$ flutter --version
Flutter 2.5.1 • channel stable • https://github.com/flutter/flutter.git
Framework • revision ffb2ecea52 (5 days ago) • 2021-09-17 15:26:33 -0400
Engine • revision b3af521a05
Tools • Dart 2.14.2

修正内容

スクリーンサイズと向きを考慮する

スクリーンサイズ、向き、セルサイズを定義する

late Size _screenSize;
late Orientation _orientation;
static const _cellSizeMax = 40.0;
late double _cellSize;

スクリーンサイズ、向きを取得してセルサイズを計算する

@override
Widget build(BuildContext context) {
  _screenSize = MediaQuery.of(context).size;
  _orientation = MediaQuery.of(context).orientation;
  switch (_orientation) {
    case Orientation.landscape:
      _cellSize = [
        _screenSize.width / 18,
        _screenSize.height / 13,
        _cellSizeMax
      ].reduce(min);
      break;
    case Orientation.portrait:
      _cellSize = [
        _screenSize.width / 12,
        _screenSize.height / 19,
        _cellSizeMax
      ].reduce(min);
      break;
  }

  return _buildContainer();
}

効果音を入れる

こちらで配布している効果音を使わせていただきました
otosozai.com

使用したライブラリ
https://pub.dev/packages/audioplayers

設定を追加

pubspec.yaml
dependencies:
  flutter:
  audioplayers: ^0.20.1

flutter:
  assets:
    - assets/

assets以下に効果音ファイルを置く

$ tree assets
assets
├── se_saa01.wav
└── se_sad03.wav

使い方

// プレイヤー初期化
final _player = AudioCache(fixedPlayer: AudioPlayer());

@override
void initState() {
  super.initState();
  // 使用するファイルをロードしておく
  _player.loadAll(['se_saa01.wav', 'se_sad03.wav']);
}

// 効果音を鳴らす
if (cellType != CellType.None) {
  // アタリの効果音
  _player.play('se_sad03.wav');
} else {
  // ハズレの効果音
  _player.play('se_saa01.wav');
}

アプリの実行

アプリを起動

flutter run

実行結果

Android iOS macOS web
image.png image.png image.png image.png

GitHub

Webアプリ

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