mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file cargotype.cpp Implementation of cargos. */
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#include "stdafx.h"
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#include "cargotype.h"
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#include "core/bitmath_func.hpp"
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#include "newgrf_cargo.h"
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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 CargoSpec::array[NUM_CARGO];
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/** Bitmask of cargo types available.
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* Initialized during a call to #SetupCargoForClimate.
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*/
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uint32 _cargo_mask;
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/** Set up the default cargo types for the given landscape type.
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* @param l Landscape
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*/
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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(CargoSpec::array, 0, sizeof(CargoSpec::array));
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for (CargoID i = 0; i < lengthof(CargoSpec::array); i++) CargoSpec::Get(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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CargoSpec *cargo = CargoSpec::Get(i);
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*cargo = _default_cargo[cl];
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if (cargo->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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*CargoSpec::Get(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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/** Get the cargo ID by cargo label.
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* @param cl Cargo type to get.
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* @return ID number if the cargo exists, else #CT_INVALID
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*/
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CargoID GetCargoIDByLabel(CargoLabel cl)
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{
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const CargoSpec *cs;
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FOR_ALL_CARGOSPECS(cs) {
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if (cs->label == cl) return cs->Index();
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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 or if the provided \a bitnum is invalid.
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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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const CargoSpec *cs;
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FOR_ALL_CARGOSPECS(cs) {
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if (cs->bitnum == bitnum) return cs->Index();
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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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/** Get sprite for showing cargo of this type.
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* @return Sprite number to use.
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*/
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SpriteID CargoSpec::GetCargoIcon() const
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{
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SpriteID sprite = this->sprite;
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if (sprite == 0xFFFF) {
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/* A value of 0xFFFF indicates we should draw a custom icon */
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sprite = GetCustomCargoSprite(this);
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}
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if (sprite == 0) sprite = SPR_CARGO_GOODS;
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return sprite;
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}
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