#ifdef CSQC
void ent_keylock();
bool item_keys_usekey(entity l, entity p)
{
	float valid = l.itemkeys & p.itemkeys;

	if (!valid) {
		// other has none of the needed keys
		return false;
	} else if (l.itemkeys == valid) {
		// ALL needed keys were given
		l.itemkeys = 0;
		return true;
	} else {
		// only some of the needed keys were given
		l.itemkeys &= ~valid;
		return true;
	}
}
#endif