mailbox movegen

mailbox.c

int * vector = dirs[<piece>];

while (*vector != 0) {
    int nextsq = currsq + *vector;
    
    while (board[nextsq] != OFFBOARD) {
        AddMove(currsq, nextsq, <whatever>);
        
        if (board[nextsq] != EMPTY || !slide[<piece>]) 
            break;
        
        nextsq += *vector;
    }
    
    *vector++;
}