230 /* static */ int32 AIVehicle::GetCapacity(VehicleID vehicle_id, CargoID cargo)

   231 {

   232 	if (!IsValidVehicle(vehicle_id)) return -1;

   233 	if (!AICargo::IsValidCargo(cargo)) return -1;

   234 

   235 	uint32 amount = 0;

   236 	for (const Vehicle *v = ::GetVehicle(vehicle_id); v != NULL; v = v->Next()) {

   237 		if (v->cargo_type == cargo) amount += v->cargo_cap;

   238 	}

   239 

   240 	return amount;

   241 }

   242 

   243 /* static */ int32 AIVehicle::GetCargoLoad(VehicleID vehicle_id, CargoID cargo)

   244 {

   245 	if (!IsValidVehicle(vehicle_id)) return -1;

   246 	if (!AICargo::IsValidCargo(cargo)) return -1;

   247 

   248 	uint32 amount = 0;

   249 	for (const Vehicle *v = ::GetVehicle(vehicle_id); v != NULL; v = v->Next()) {

   250 		if (v->cargo_type == cargo) amount += v->cargo.Count();

   251 	}

   252 

   253 	return amount;

   254 }