#include <graphics.h>
#include <dos.h>
#include <stdio.h>
#define computer 2
#define elva6401 1
#define left 75
#define right 77
#define down 80
#define up 72
#define enter 0
#define ALT_X 45
#define top_x 120
#define top_y 100
int chess_map[16][16];
int column,row;
int b_column,b_row;/*记下移动前行列,为了un_draw_chess()*/
int E_column,E_row;/*记下按enter的行列或电脑的想的行列*/
int flag=1;

/***********************************************/
/* 初始化行列 */
int init_col_row()
{
int i,j;
for (i=0;i<16;i++)
for (j=0;j<16;j++)
    if (chess_map[i][j]==0)
    {
    b_column=column=16-i;
    b_row=row=16-j;
    return 0;
    }
}
/***********************************************/
/* 画整个棋盘 */
int draw_map()
{
int i;
setcolor(GREEN);
for (i=0;i<16;i++)
    {
    line(top_x+i*20,top_y,top_x+i*20,top_y+300);
    line(top_x,top_y+i*20,top_x+300,top_y+i*20);
    }
}
/***********************************************/
/* 初始化初始化棋盘 */
void init()
{
int i,j;
for (i=0;i<16;i++)
for (j=0;j<16;j++)
    chess_map[i][j]=0;
init_col_row();
draw_map();
}
/***********************************************/
/* 得到当前的按键 ASCII 码 */
int Getkey(void)
{
int key=0;
while (bioskey(1) == 0);/*等待按键*/
key = bioskey(0);/*把接收的按键的键盘码赋给变量key*/
return key;
}
/***********************************************/
/* 是否能移到column行,row列,能返回0 */
int limit()
{
if ((column>16 || column<1) || (row>16 || row<1) || chess_map[column-1][row-1]!=0)
    return 1;
else
    return 0;
}
/***********************************************/
/* 画棋子 */
int draw_chess(int player)
{
if (player==1)
    {
    setcolor(WHITE);
    setfillstyle(SOLID_FILL,WHITE);
    circle(top_x+(column-1)*20,top_y+(row-1)*20,9);
    }
else
    {
    setcolor(RED);
    setfillstyle(SOLID_FILL,RED);
    circle(top_x+(column-1)*20,top_y+(row-1)*20,9);
    }
}
/***********************************************/
/* 涂掉前一步所画的棋子 */
int un_draw_chess()
{
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
circle(top_x+(b_column-1)*20,top_y+(b_row-1)*20,9);
setcolor(GREEN);
line(top_x+(b_column-1)*20,top_y,top_x+(b_column-1)*20,top_y+300);
line(top_x,top_y+(b_row-1)*20,top_x+300,top_y+(b_row-1)*20);
}
/***********************************************/
/* 对按键的反映,人下棋 */
int move_chess()
{
int key=Getkey();
b_column=column;
b_row=row;
switch(key)
{
case left :
    if (column==1) column=17;
    column--;
    while(limit())
        column--;
    break;
case right :
    if (column==16) column=0;
    column++;
    while(limit())
        column++;
    break;
case up :
    if (row==1) row=17;
    row--;
    while(limit())
        row--;
    break;
case down :
    if (row==16) row=0;
    row++;
    while(limit())
        row++;
    break;
case enter :
    chess_map[column-1][row-1]=elva6401;
    E_column=column,E_row=row;
    flag=0;
    return 0;
case ALT_X :
    exit(0);
default : return 0;
}
draw_chess(elva6401);
un_draw_chess();
}

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