/* Function returns 1 if opponent's king is checked
* c = 1 (white) or -1 (black) */
int is_check(board * brd, int c) {
move * t = malloc(sizeof(move));
init_move(&t);
generate_all_moves(c, brd, &t);
move * t_ = t;
while(t_->next != NULL) {
if( t_->x * c == -6) {
free_moves(&t);
return 1;
}
t_=t_->next;
}
free_moves(&t);
return 0;
}
/* Returns 1 if player c has valid moves left.
* c = 1 (white) or -1 (black)
* If king is in check and no valid moves left, that implies checkmate */
int has_moves(board * brd, int c) {
move * t = malloc(sizeof(move));
init_move(&t);
generate_all_moves(c, brd, &t);
move * t_ = t;
while(t_->next != NULL) {
if(apply_move(brd, &t_, c)) {
undo_move(brd, &t_);
free_moves(&t);
return 1;
}
t_ = t_->next;
}
free_moves(&t);
return 0;
}
static void free_stack(t_stack *stack)
{
t_ilist *tmp;
t_ilist *tmp_bis;
tmp = stack->a_begin;
while (tmp)
{
tmp_bis = tmp->next;
free(tmp);
tmp = tmp_bis;
}
tmp = stack->b_begin;
while (tmp)
{
tmp_bis = tmp->next;
free(tmp);
tmp = tmp_bis;
}
free_moves(stack);
free(stack);
}
