//data.c

#include <stdio.h>

/*
************************************************************************
Board representation
************************** 
				0
				| \
				|  1
				| ／\
				|／  \
				2─━3			Assigned a number N
				|  ／|			associated with
				| ／ |			each intersection
				|／  |
				4─━5			on board
				|  ／|
				| ／ |
				|／  |
				6─━7
				|  ／|
				| ／ |
				|／  |
				8─━9

				︱‖∥∕／＼﹨∥∣
	Here, we track the position by recording each stone's intersecion on 
board. The structure stoneIntersection[] is initialized by the initial 
position.
*************************************************************************
*/
int stoneIntersection[3] = {0, 8, 9};


/*
************************************************************************
Pre-table for move generation
******************************
	preTable[color][from][moveIndex]= to, to ∈[0, 9]. 
	1) In this table, a valid move is represented by a number between 
0 and 9; the value INV means no more moves.
	2) Where, color == 0, red stone moves pre-table; color == 1, blue
stone moves pre-table.
*************************************************************************
*/
#define INV		-1

//對照上面的棋盤編碼圖，并參照牛角棋的規則，可有如下預置表
int preTable[2][10][5] =
{
	{	/*red stone moves table*/
		{2, 1, INV},		{2, 3, 0, INV}, 
		{4, 3, 1, 0, INV},	{5, 4, 2, 1, INV}, 
		{6, 5, 3, 2, INV},	{7, 6, 4, 3, INV},
		{8, 7, 5, 4, INV},	{9, 8, 6, 5, INV}, 
		{9, 7, 6, INV},		{8, 7, INV},
	},
	{	/*blue stone moves table*/
		{INV},			{0, INV}, 
		{3, 1, 0, INV},		{2, 1, INV}, 
		{2, 3, 5, INV},		{3, 4, INV},
		{4, 5, 7, INV},		{5, 6, INV}, 
		{6, 7, 9, INV},		{7, 8, INV},
	},
};


/*
************************************************************************
Global data for search
*************************************************************************
*/
#define   MAXDEPTH   100
int moveList[1024];			//著法列表
int* pList[MAXDEPTH+2];			//各層著法列表的首地址
int maxDepth;				//當前的最大搜索深度
int bestRootMove;
int rootAlpha;
int rootBeta;


/*
************************************************************************
repetition detected
*************************************************************************
*/
int  posStack[MAXDEPTH];		//保存歷史局面，用于探測循環


/*
************************************************************************
Other global data
*************************************************************************
*/
int			side;		//哪一方
int			newGame;		

FILE		*inputStream;
char		*args[256];
int		nArgs;
char		buffer[512];
char		cmdBuffer[4096];
unsigned int	timeRemaining;		//本方剩余的總時間
unsigned int	oTimeRemaining;		//對手剩余的總時間
int		traceOut = 1;