bool snake_valid( cube_t *cube, position_t *position, char *binary_string) {
int i;
position_t * position_;
bool valid_snake;
printf( "%s\n", binary_string);
print_snake( position);
if( strlen( binary_string) == 1) {
return true;
}
if( binary_string[0] == '0') {
position_ = position_append( position, position->d);
if( position_valid( cube, position_)) {
valid_snake = snake_valid( cube, position_, binary_string + 1);
free_position( position_);
return valid_snake;
} else {
free_position( position_);
return false;
}
} else {
for( i = 1; i <= 3; i++) {
if( abs( position->d ) != abs( i)) {
position_ = position_append( position, i );
if( position_valid( cube, position_)){
valid_snake = snake_valid( cube, position_, binary_string + 1);
free_position(position_);
if( valid_snake) return true;
}
}
}
for( i = -1; i >= -3; i--) {
if( abs( position->d ) != abs( i)) {
position_ = position_append( position, i );
if( position_valid( cube, position_)){
valid_snake = snake_valid( cube, position_, binary_string + 1);
free_position(position_);
if( valid_snake) return true;
}
}
}
return false;
}
}
void handle_destroy_event(XEvent *e)
{
free_position(e->xdestroywindow.window);
XDestroyWindow(display, e->xdestroywindow.window);
}