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/* $Id$ */
/*
* 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 cargotype.h Types/functions related to cargos. */
#ifndef CARGOTYPE_H
#define CARGOTYPE_H
#include "economy_type.h"
#include "cargo_type.h"
#include "gfx_type.h"
#include "strings_type.h"
#include "landscape_type.h"
typedef uint32 CargoLabel;
enum TownEffect {
TE_NONE,
TE_PASSENGERS,
TE_MAIL,
TE_GOODS,
TE_WATER,
TE_FOOD,
};
static const byte INVALID_CARGO = 0xFF;
struct CargoSpec {
uint8 bitnum;
CargoLabel label;
uint8 legend_colour;
uint8 rating_colour;
uint8 weight;
uint16 initial_payment;
uint8 transit_days[2];
bool is_freight;
TownEffect town_effect; ///< The effect this cargo type has on towns
uint16 multipliertowngrowth;
uint8 callback_mask;
StringID name;
StringID name_single;
StringID units_volume;
StringID quantifier;
StringID abbrev;
SpriteID sprite;
uint16 classes;
const struct GRFFile *grffile; ///< NewGRF where 'group' belongs to
const struct SpriteGroup *group;
Money current_payment;
/**
* Determines index of this cargospec
* @return index (in the CargoSpec::array array)
*/
FORCEINLINE CargoID Index() const
{
return this - CargoSpec::array;
}
/**
* Tests for validity of this cargospec
* @return is this cargospec valid?
* @note assert(cs->IsValid()) can be triggered when GRF config is modified
*/
FORCEINLINE bool IsValid() const
{
return this->bitnum != INVALID_CARGO;
}
/**
* Total number of cargospecs, both valid and invalid
* @return length of CargoSpec::array
*/
static FORCEINLINE size_t GetArraySize()
{
return lengthof(CargoSpec::array);
}
/**
* Retrieve cargo details for the given cargo ID
* @param index ID of cargo
* @pre index is a valid cargo ID
*/
static FORCEINLINE CargoSpec *Get(size_t index)
{
assert(index < lengthof(CargoSpec::array));
return &CargoSpec::array[index];
}
private:
static CargoSpec array[NUM_CARGO]; ///< Array holding all CargoSpecs
friend void SetupCargoForClimate(LandscapeID l);
};
extern uint32 _cargo_mask;
/* Set up the default cargo types for the given landscape type */
void SetupCargoForClimate(LandscapeID l);
/* Get the cargo icon for a given cargo ID */
SpriteID GetCargoSprite(CargoID i);
/* Get the cargo ID with the cargo label */
CargoID GetCargoIDByLabel(CargoLabel cl);
CargoID GetCargoIDByBitnum(uint8 bitnum);
static inline bool IsCargoInClass(CargoID c, uint16 cc)
{
return (CargoSpec::Get(c)->classes & cc) != 0;
}
#define FOR_ALL_CARGOSPECS_FROM(var, start) for (size_t cargospec_index = start; var = NULL, cargospec_index < CargoSpec::GetArraySize(); cargospec_index++) \
if ((var = CargoSpec::Get(cargospec_index))->IsValid())
#define FOR_ALL_CARGOSPECS(var) FOR_ALL_CARGOSPECS_FROM(var, 0)
#endif /* CARGOTYPE_H */
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