mirror of https://github.com/OpenTTD/OpenTTD.git
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/* $Id$ */
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/** @file ai_cargo.cpp Implementation of AICargo. */
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#include "ai_cargo.hpp"
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#include "../../cargotype.h"
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#include "../../economy_func.h"
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#include "../../core/alloc_func.hpp"
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#include "../../core/bitmath_func.hpp"
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#include "../../newgrf_cargo.h"
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/* static */ bool AICargo::IsValidCargo(CargoID cargo_type)
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{
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return (cargo_type < NUM_CARGO && ::CargoSpec::Get(cargo_type)->IsValid());
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}
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/* static */ char *AICargo::GetCargoLabel(CargoID cargo_type)
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{
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if (!IsValidCargo(cargo_type)) return NULL;
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const CargoSpec *cargo = ::CargoSpec::Get(cargo_type);
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/* cargo->label is a uint32 packing a 4 character non-terminated string,
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* like "PASS", "COAL", "OIL_". New ones can be defined by NewGRFs */
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char *cargo_label = MallocT<char>(sizeof(cargo->label) + 1);
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for (uint i = 0; i < sizeof(cargo->label); i++) {
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cargo_label[i] = GB(cargo->label, (uint8)(sizeof(cargo->label) - i - 1) * 8, 8);
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}
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cargo_label[sizeof(cargo->label)] = '\0';
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return cargo_label;
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}
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/* static */ bool AICargo::IsFreight(CargoID cargo_type)
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{
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if (!IsValidCargo(cargo_type)) return false;
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const CargoSpec *cargo = ::CargoSpec::Get(cargo_type);
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return cargo->is_freight;
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}
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/* static */ bool AICargo::HasCargoClass(CargoID cargo_type, CargoClass cargo_class)
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{
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if (!IsValidCargo(cargo_type)) return false;
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return ::IsCargoInClass(cargo_type, (::CargoClass)cargo_class);
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}
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/* static */ AICargo::TownEffect AICargo::GetTownEffect(CargoID cargo_type)
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{
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if (!IsValidCargo(cargo_type)) return TE_NONE;
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return (AICargo::TownEffect)CargoSpec::Get(cargo_type)->town_effect;
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}
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/* static */ Money AICargo::GetCargoIncome(CargoID cargo_type, uint32 distance, uint32 days_in_transit)
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{
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if (!IsValidCargo(cargo_type)) return -1;
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return ::GetTransportedGoodsIncome(1, distance, Clamp(days_in_transit * 2 / 5, 0, 255), cargo_type);
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}
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