Thread: Chess Mess

I'm making a chess game. I had it pretty much working, but when a player took a piece weird stuff happened. Anyway the way my object were set up sucked, so I have been trying to redesign it.

The 'board' object has an 8*8 array which either holds a null value or a pointer to a 'piece' object. When the board is constructed the grid is initialized:

Code:

       void NewPiece(int x, int y, bool i)
        {
            cell[x][y] = new piece;
            cell[x][y]->SetOwner(i);
            if(y==0 || y==7) 
                if(x==0 || x==7)      cell[x][y]->SetType('R', 'k');
                else if(x==1 || x==6) cell[x][y]->SetType('K', 't');
                else if(x==2 || x==5) cell[x][y]->SetType('B', 's');
                else if(x==4)         cell[x][y]->SetType('K', 5);
                else if(x==3)         cell[x][y]->SetType('Q', 6);
            else                  
                cell[x][y]->SetType('P', 'n');  
        }
        
        board()
        {
            int x, y;
            go=0; turn=1;
            for(y=0; y<2; y++) pl[y] = new player;
            for(y=0; y<8; y++) for(x=0; x<8; x++) cell[x][y]=NULL;
            for(y=0; y<2; y++) for(x=0; x<8; x++) NewPiece(x, y, false);
            for(y=6; y<8; y++) for(x=0; x<8; x++) NewPiece(x, y, true);    
        }

The chess board is then drawn when the program begins:

Code:

void board::DrawBoard()
{
    for(int y=0; y<18; y++)
        for(int x=0; x<26; x++)
            if(y==0)
                if(x==25)       printf(" \n");
                else if(x&#37;3==2) putchar(65+(x/3));   
                else            putchar(' ');
            else if (y==1)
                if(x==0)        putchar(' ');
                else if(x==1)   putchar(218);
                else if(x==25)  printf("%c\n", 191);
                else if(x%3==1) putchar(194); 
                else            putchar(196);
            else if(y==17)
                if(x==0)        putchar(' ');
                else if(x==1)   putchar(192);
                else if(x==25)  printf("%c\n", 217);
                else if(x%3==1) putchar(193); 
                else            putchar(196);
            else if(y%2==1)
                if(x==0)        putchar(' ');
                else if(x==1)   putchar(195);
                else if(x==25)  printf("%c\n", 180);
                else if(x%3==1) putchar(197); 
                else            putchar(196);
            else  
                if (x==0)       putchar(48+(y/2));
                else if(x==25)  printf("%c\n", 179);
                else if(x%3==1) putchar(179); 
                else if(x%3==2) DrawCell(x/3, (y/2)-1);    
}   

void board::DrawCell(int x, int y)
{  
    int i;
    bool own;
    
    if(cell[x][y]==NULL) //Empty Cell
    {
        if(x%2==0 && y%2==0 || x%2==1 && y%2==1) SetConsoleTextAttribute ( h, BACKGROUND_BLUE | 0 );  
        else                                     SetConsoleTextAttribute ( h, BACKGROUND_GREEN | 0 );  
        printf("  ");   
    }
    else                 //There is a piece in the Cell
    {
        own=GetOwner(x, y);
        if(own == true)//Check owner colour
            if(x%2==0 && y%2==0 || x%2==1 && y%2==1)//Check tile colour
                SetConsoleTextAttribute ( h, BACKGROUND_BLUE | 8 );  
            else
                SetConsoleTextAttribute ( h, BACKGROUND_GREEN | 8 );  
        else 
            if(x%2==0 && y%2==0 || x%2==1 && y%2==1)
                SetConsoleTextAttribute ( h, BACKGROUND_BLUE | 0 );
            else
                SetConsoleTextAttribute ( h, BACKGROUND_GREEN | 0 );
        
        putchar(cell[x][y]->GetType(0));
        putchar(cell[x][y]->GetType(1));
    }

    SetConsoleTextAttribute ( h, 8 ); 
}

When the program runs I get a MAV when I try an access a piece through the pointer in the grid cell. (in bold)

Also here is the get owner function:

Code:

bool GetOwner(int x, int y) { return cell[x][y]->GetOwner(); }

Any suggestions on how I could fix this?

Cheers.