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100 lines
2.2 KiB
C++
100 lines
2.2 KiB
C++
/* $Id$ */
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/** @file cargotype.cpp Implementation of cargos. */
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#include "stdafx.h"
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#include "openttd.h"
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#include "newgrf_cargo.h"
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#include "cargotype.h"
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#include "core/bitmath_func.hpp"
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#include "table/sprites.h"
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#include "table/strings.h"
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#include "table/cargo_const.h"
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CargoSpec _cargo[NUM_CARGO];
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static const byte INVALID_CARGO = 0xFF;
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/* Bitmask of cargo types available */
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uint32 _cargo_mask;
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void SetupCargoForClimate(LandscapeID l)
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{
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assert(l < lengthof(_default_climate_cargo));
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/* Reset and disable all cargo types */
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memset(_cargo, 0, sizeof(_cargo));
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for (CargoID i = 0; i < lengthof(_cargo); i++) _cargo[i].bitnum = INVALID_CARGO;
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_cargo_mask = 0;
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for (CargoID i = 0; i < lengthof(_default_climate_cargo[l]); i++) {
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CargoLabel cl = _default_climate_cargo[l][i];
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/* Bzzt: check if cl is just an index into the cargo table */
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if (cl < lengthof(_default_cargo)) {
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/* Copy the indexed cargo */
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_cargo[i] = _default_cargo[cl];
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if (_cargo[i].bitnum != INVALID_CARGO) SetBit(_cargo_mask, i);
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continue;
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}
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/* Loop through each of the default cargo types to see if
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* the label matches */
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for (uint j = 0; j < lengthof(_default_cargo); j++) {
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if (_default_cargo[j].label == cl) {
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_cargo[i] = _default_cargo[j];
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/* Populate the available cargo mask */
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SetBit(_cargo_mask, i);
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break;
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}
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}
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}
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}
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const CargoSpec *GetCargo(CargoID c)
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{
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assert(c < lengthof(_cargo));
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return &_cargo[c];
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}
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bool CargoSpec::IsValid() const
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{
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return bitnum != INVALID_CARGO;
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}
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CargoID GetCargoIDByLabel(CargoLabel cl)
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{
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for (CargoID c = 0; c < lengthof(_cargo); c++) {
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if (_cargo[c].bitnum == INVALID_CARGO) continue;
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if (_cargo[c].label == cl) return c;
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}
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/* No matching label was found, so it is invalid */
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return CT_INVALID;
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}
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/** Find the CargoID of a 'bitnum' value.
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* @param bitnum 'bitnum' to find.
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* @return First CargoID with the given bitnum, or CT_INVALID if not found.
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*/
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CargoID GetCargoIDByBitnum(uint8 bitnum)
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{
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if (bitnum == INVALID_CARGO) return CT_INVALID;
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for (CargoID c = 0; c < lengthof(_cargo); c++) {
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if (_cargo[c].bitnum == bitnum) return c;
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}
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/* No matching label was found, so it is invalid */
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return CT_INVALID;
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}
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