makemove.c

牛角棋的源码

//makemove.c

#include <assert.h>
#include "data.h"
#include "utility.h"

	//生成新局面
int MakeMove(int piece, int to)
{
	int tmp = stoneIntersection[piece];

#ifdef _DEBUG
	//合法性检查
	int i = 0;
	assert((0 <= (to&15)) && ((to&15) <= 9));
	for(i = 0; i < 3; ++i)
		assert(to ==stoneIntersection[i]);
#endif

	stoneIntersection[piece] = to;

	return tmp;
}

	//撤销局面
void UnmakeMove(int piece, int from)
{

#ifdef _DEBUG
	assert((0 <= (from&15)) && ((from&15) <= 9));
#endif

	stoneIntersection[piece] = from;
}

	//将着法字符串-->着法的内部表示
int InputMove(char *buf, int wtm)
{
	int i;
	int from, to;
	int rVal = 1;

	//str_to_ascii
	from = buf[0] - '0';
	to   = buf[1] - '0';

	//非法着法，返回继续等待输入的状态
	if((from < 0) || (from > 9))
		return 1;						
	if((to < 0) || (to > 9))
		return 1;

	if(	RED == wtm &&
		(from != stoneIntersection[REDSTONE] ||
		 to == stoneIntersection[BLUESTONE1] ||
		 to == stoneIntersection[BLUESTONE2] ))
		return 1;
	else if(BLUE == wtm &&
		((from != stoneIntersection[BLUESTONE1] &&
	     from != stoneIntersection[BLUESTONE2])
		|| to == stoneIntersection[REDSTONE]
		|| to == stoneIntersection[BLUESTONE1]
		|| to == stoneIntersection[BLUESTONE2]))
			return 1;

	if(2 < abs(from - to))
		return 1;

	//合法着法
	for(i = 0; i < 3; ++i)
	{
		if(from == stoneIntersection[i])
		{
			stoneIntersection[i] = to;
			rVal = -1;
		}
	}
	if(traceOut)
	{
		Trace_board(stoneIntersection);
		traceOut = 0;
	}
	return rVal;
}

	//着法内部表示-->输出字符串
void OutputMove(int move)
{
	int i;
	int piece, from, to;
	char buf[4];

	piece = (move & 48) >> 4;
	to    = move & 15;

	//ascii_to_str
	buf[0]  = stoneIntersection[piece] + '0';	//from
	buf[1]	= to + '0';				//to
	buf[2]  = '\0';					//'\0'

	Print("Computer: %s\n", buf);
}