■ [ゲーム製作技術]Box2D

　そういえばいりす症候群！とかで２Ｄ物理エンジンを使っているそうだな、と思って調べてみたのがこれ。

• http://www.box2d.org/screenshots.html

　Rubyで使えるならBadiashimsheの各自判定処理に使いたいくらいですな。オリジナルライセンスですが商業利用にも寛大なようですし。いっそ、Ruby用ライブラリを作った方がRubyでうだうだ判定処理作っていくより幸せかしら。

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