February 2016
Intermediate to advanced
256 pages
4h 7m
Japanese
Content preview from 初めてのAndroid 第4版
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
4章ゲームのインターフェース定義
前章では究極の三目並べというゲームを作り、オープニング画面を実装した。省略したのは何だろうか。その通り、ゲームの部分だ。2つの章に渡ってこのテーマに取り組んでいく。この章ではゲームのユーザーインターフェースを作る。スマホやタブレットを相手に渡しながら交互に操作すれば、ほかの人とプレイできるようになる。次章では思考して自分の手を指す機能をゲームに与える。これにより一人で遊べるようになる。
4.1 ゲーム盤
もっとも小さな部品からスタートして少しずつ大きな部品に進むという形でゲーム盤を作っていく。どのように考えた方がわかりやすいかによって、トップレベルのオブジェクトからスタートして下に降りていく方法もある。どちらにするかはあなた次第だが、私の場合は下から考える方がやりやすいのだ。
4.1.1 小さな出発点
まず図3-1の「究極の三目並べ」をもう一度見て、これを実装するには何が必要か考えてみよう。最初に頭に浮かぶのは何だろうか。おそらく×と○のシンボルだ（図4-1）。だからここから始めることにしよう。
図4-1
独自の画像ファイルを作っても、本書のウェブサイト†1から私が作った画像ファイルをダウンロードしてもよい（ticTacToev2サンプルの一部になっている）。私はInkscape†2というフリーの画像編集ソフトを使ってx_blue.pngとo_red.pngを作り、128×128pxのPNGファイルとして保存した。PNGファイルは透明または半透明の背景を作ることができるので、他の画像の上に重ね合わせられる。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.