/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file ai_cargo.cpp Implementation of AICargo. */ #include "ai_cargo.hpp" #include "../../cargotype.h" #include "../../economy_func.h" #include "../../core/bitmath_func.hpp" /* static */ bool AICargo::IsValidCargo(CargoID cargo_type) { return (cargo_type < NUM_CARGO && ::CargoSpec::Get(cargo_type)->IsValid()); } /* static */ char *AICargo::GetCargoLabel(CargoID cargo_type) { if (!IsValidCargo(cargo_type)) return NULL; const CargoSpec *cargo = ::CargoSpec::Get(cargo_type); /* cargo->label is a uint32 packing a 4 character non-terminated string, * like "PASS", "COAL", "OIL_". New ones can be defined by NewGRFs */ char *cargo_label = MallocT<char>(sizeof(cargo->label) + 1); for (uint i = 0; i < sizeof(cargo->label); i++) { cargo_label[i] = GB(cargo->label, (uint8)(sizeof(cargo->label) - i - 1) * 8, 8); } cargo_label[sizeof(cargo->label)] = '\0'; return cargo_label; } /* static */ bool AICargo::IsFreight(CargoID cargo_type) { if (!IsValidCargo(cargo_type)) return false; const CargoSpec *cargo = ::CargoSpec::Get(cargo_type); return cargo->is_freight; } /* static */ bool AICargo::HasCargoClass(CargoID cargo_type, CargoClass cargo_class) { if (!IsValidCargo(cargo_type)) return false; return ::IsCargoInClass(cargo_type, (::CargoClass)cargo_class); } /* static */ AICargo::TownEffect AICargo::GetTownEffect(CargoID cargo_type) { if (!IsValidCargo(cargo_type)) return TE_NONE; return (AICargo::TownEffect)::CargoSpec::Get(cargo_type)->town_effect; } /* static */ Money AICargo::GetCargoIncome(CargoID cargo_type, uint32 distance, uint32 days_in_transit) { if (!IsValidCargo(cargo_type)) return -1; return ::GetTransportedGoodsIncome(1, distance, Clamp(days_in_transit * 2 / 5, 0, 255), cargo_type); }