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対戦ゲームを作る。 その4

Posted at

#概要

対戦ゲームを作る。
そこに、石が置けるか評価する関数の実装。

#考え方

前後左右、9方向に、違う石があって、同じ石があるのか、探索する。

#サンプルコード

	function check(put, d) {
		var x = put % 8; 
		var y = Math.floor(put / 8);
		var res = 0;
		if (x == 0 && (d == -9 || d == -1 || d ==  7)) res = 1;
		if (x == 7 && (d == -7 || d ==  1 || d ==  9)) res = 1;
		if (y == 0 && (d == -9 || d == -8 || d == -7)) res = 1;
		if (y == 7 && (d ==  7 || d ==  8 || d ==  9)) res = 1;
		return res;
	}
	function oku(put, iro, ban) {
		var res = 0;
		var turn = 0;
		if (iro == 0) turn = 2;
		var dir = new Array(-9, -8, -7, -1, 1, 7, 8, 9);
		var tugi;
		var i;
		var count;
		if (ban[put] == 1)
		{
			for (i = 0; i < 8; i++)
			{
				count = 0;
				tugi = put;
				do
				{
					if (check(tugi, dir[i]) == 1) break;
					count++;
					tugi += dir[i];
				} 
				while (ban[tugi] == turn);
				if ((count > 1) && (ban[tugi] == iro))
				{
					res = -1;
					tugi = put;
					do
					{
						ban[tugi] = iro;
						tugi += dir[i];
					}
					while (ban[tugi] == turn);
				}
			}
		}
		return res;
	}

以上。

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