result player::mini( pos& p , board& b )
{
if(b.checkGameState()==WIN)
return WIN;
else
{
result finalResult=WIN;
/* This Function will simulate Human moves and try to reduce the score
Human will go for the move by which he can win*/
for ( int i=0 ;i<3 ; i++)
{
for ( int j=0 ; j<3 ; j++)
{
board tempBoard=b;
if(tempBoard.mMatrix[i][j]==NONE)
{
tempBoard.mMatrix[i][j]=CROSS;
result res=max(p ,tempBoard);
if(res<finalResult)
{
finalResult=res;
}
}
}
}
return finalResult;
}
}
result player::max(pos& p , board& b)
{
if(b.checkGameState()==LOSS)
{
return LOSS;
}
/* This function will play KNOT or AI's moves */
if(b.getLevel()==9)
{
return DRAW;
}
else
{
/* if found winning move in next step . Prune everything else
It stops the process of finding the suitable move as soon
as the winning move is found.
*/
bool flag=false;
/* Saves the current best coordinate/Box in the current state*/
int *coord=new int[2];
result finalResult = LOSS;
for ( int i=0 ; i<3 ; i++)
{
for ( int j=0 ; j<3 ; j++)
{
if(b.mMatrix[i][j]==NONE)
{
board tempBoard=b;
tempBoard.mMatrix[i][j]=KNOT;
result res=mini(p ,tempBoard);
if(res>=finalResult)
{
coord[0]=i;
coord[1]=j;
finalResult=res;
if(res==WIN)
{
flag=true;
break;
}
}
}
}
if(flag==true)
break;
}
p.r=coord[0];
p.c=coord[1];
return finalResult;
}
}
