#93 Life Game

　ライフゲームは、生命群のシミュレーションゲームです。二次元の格子状のフィールドに、空白のセルと生命体を表すセルを配置し、単純なルールのもとで各セルの次の世代での生死を決定します。詳細は、Wikipediaを参照してください。

ライフゲーム - Wikipedia

単純なルールにも関わらず、複雑な模様ができる様子は、現実の自然界に近しいものを感じます。学術的には、セル・オートマトンという分野で研究がなされています。

　ライフゲームのプログラム自体はそれほど難しいものではありません。Pythonで作ってみました。

lifegame.py

　プログラムはGitHubで公開しています。

main.pyを実行するとゲームがスタートします。config.pyでゲームの設定が変更できます。

$ python3 main.py
Iteration: 0
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+---------------------------------------------------------------------------------------------------+

初期配置はランダムです。エンターキーで、次の世代になります。ルールは下記の通りです。

誕生: 周囲のマスの生命がちょうど3
過疎: 周囲のマスの生命が1以下
過密: 周囲のマスの生命が4以上

世代を重ねていくと、生命が広がったり消えたりを繰り返し、800世代ほどでこれ以上変化がない状態になりました。

Iteration: 800
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+---------------------------------------------------------------------------------------------------+

眺めていると、一定周期で同じ模様を繰り返すパターンやちょっとずつ移動するパターンなどもでてきます。ぜひみなさんも試してみてください。

まとめ

　かつて、ライフゲームから着想を得て、自然界のシミュレーションゲームを作ったこともあります。あまり知識がなく、Swiftで開発したため、もう動きません。いずれリメイクしたいと思っています。

EOF