hash_map<int, Ammo_info>::iterator it = map.find(shnum); return it == map.end() ? 0 : &((*it).second);
	Ammo_info *find(int shnum)	// Look up given shape.		{		hash_map<int, Ammo_info>::iterator it = map.find(shnum);		return it == map.end() ? 0 : &((*it).second);		}