cpu.c

三子棋

/*
cpu.c - CPU Moving 
Copyright (C) 2006 Obada Denis ([e-mail])
Project home page : http://tictactoegtk.sourceforge.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

/*
Description of Interface :
When game need a CPU move it call cpumove() function.
Variables to access of function cpumove() :
grid[3][3] - array 3x3 of char, contain position of players chars
cpuchar - type : char, CPU player char
usrchar - type : char, Player char

Important :
CPU need to make ONE  move of CPU Player
*/

#ifndef cpu_c
#define cpu_c
//Code
void cpumove(void)
{
gint i,j=0;
#if debug
g_printf("CPU move \n");
#endif

//Added by Timur Salikhov aka Tim ([e-mail])
for (i=0; i<3; i++) {
	if ((grid[i][0]==cpuchar) && (grid[i][1]==cpuchar) && (grid[i][2]==' ')) { j=2; goto CreateMove;}
	if ((grid[i][0]==cpuchar) && (grid[i][2]==cpuchar) && (grid[i][1]==' ')) { j=1; goto CreateMove;}
	if ((grid[i][2]==cpuchar) && (grid[i][1]==cpuchar) && (grid[i][0]==' ')) { j=0; goto CreateMove;}
	
	if ((grid[0][i]==cpuchar) && (grid[1][i]==cpuchar) && (grid[2][i]==' ')) { j=i; i=2; goto CreateMove;}
	if ((grid[0][i]==cpuchar) && (grid[2][i]==cpuchar) && (grid[1][i]==' ')) { j=i; i=1; goto CreateMove;}
	if ((grid[2][i]==cpuchar) && (grid[1][i]==cpuchar) && (grid[0][i]==' ')) { j=i; i=0; goto CreateMove;}
	}
if ((grid[0][0]==cpuchar) && (grid[1][1]==cpuchar) && (grid[2][2]==' ')) { i=2; j=2; goto CreateMove;}
if ((grid[2][2]==cpuchar) && (grid[1][1]==cpuchar) && (grid[0][0]==' ')) { i=0; j=0; goto CreateMove;}
if ((grid[0][0]==cpuchar) && (grid[2][2]==cpuchar) && (grid[1][1]==' ')) { i=1; j=1; goto CreateMove;}

if ((grid[0][2]==cpuchar) && (grid[1][1]==cpuchar) && (grid[2][0]==' ')) { i=2; j=0; goto CreateMove;}
if ((grid[2][0]==cpuchar) && (grid[1][1]==cpuchar) && (grid[0][2]==' ')) { i=0; j=2; goto CreateMove;}
if ((grid[0][2]==cpuchar) && (grid[2][0]==cpuchar) && (grid[1][1]==' ')) { i=1; j=1; goto CreateMove;}

for (i=0; i<3; i++) {
	if ((grid[i][0]==usrchar) && (grid[i][1]==usrchar) && (grid[i][2]==' ')) { j=2; goto CreateMove;}
	if ((grid[i][0]==usrchar) && (grid[i][2]==usrchar) && (grid[i][1]==' ')) { j=1; goto CreateMove;}
	if ((grid[i][2]==usrchar) && (grid[i][1]==usrchar) && (grid[i][0]==' ')) { j=0; goto CreateMove;}
	
	if ((grid[0][i]==usrchar) && (grid[1][i]==usrchar) && (grid[2][i]==' ')) { j=i; i=2; goto CreateMove;}
	if ((grid[0][i]==usrchar) && (grid[2][i]==usrchar) && (grid[1][i]==' ')) { j=i; i=1; goto CreateMove;}
	if ((grid[2][i]==usrchar) && (grid[1][i]==usrchar) && (grid[0][i]==' ')) { j=i; i=0; goto CreateMove;}
	}
if ((grid[0][0]==usrchar) && (grid[1][1]==usrchar) && (grid[2][2]==' ')) { i=2; j=2; goto CreateMove;}
if ((grid[2][2]==usrchar) && (grid[1][1]==usrchar) && (grid[0][0]==' ')) { i=0; j=0; goto CreateMove;}
if ((grid[0][0]==usrchar) && (grid[2][2]==usrchar) && (grid[1][1]==' ')) { i=1; j=1; goto CreateMove;}

if ((grid[0][2]==usrchar) && (grid[1][1]==usrchar) && (grid[2][0]==' ')) { i=2; j=0; goto CreateMove;}
if ((grid[2][0]==usrchar) && (grid[1][1]==usrchar) && (grid[0][2]==' ')) { i=0; j=2; goto CreateMove;}
if ((grid[0][2]==usrchar) && (grid[2][0]==usrchar) && (grid[1][1]==' ')) { i=1; j=1; goto CreateMove;}
// End of Tim's code	

//If move was not created then move create rand... 
do {
        i=rand()%3;
        j=rand()%3;
     } while (grid[i][j]!=' ');

        
CreateMove: //Added by Tim. This label needs by Tim's code.
	grid[i][j]=cpuchar;
}
#endif