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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 newgrf_generic.h Functions related to generic callbacks. */
#ifndef NEWGRF_GENERIC_H
#define NEWGRF_GENERIC_H
#include "cargo_type.h"
#include "industry_type.h"
#include "newgrf.h"
struct SpriteGroup;
/** AI events for asking the NewGRF for information. */
enum AIConstructionEvent {
AICE_TRAIN_CHECK_RAIL_ENGINE = 0x00, ///< Check if we should build an engine
AICE_TRAIN_CHECK_ELRAIL_ENGINE = 0x01, ///< Check if we should build an engine
AICE_TRAIN_CHECK_MONORAIL_ENGINE = 0x02, ///< Check if we should build an engine
AICE_TRAIN_CHECK_MAGLEV_ENGINE = 0x03, ///< Check if we should build an engine
AICE_TRAIN_GET_RAIL_WAGON = 0x08, ///< Check if we should build an engine
AICE_TRAIN_GET_ELRAIL_WAGON = 0x09, ///< Check if we should build an engine
AICE_TRAIN_GET_MONORAIL_WAGON = 0x0A, ///< Check if we should build an engine
AICE_TRAIN_GET_MAGLEV_WAGON = 0x0B, ///< Check if we should build an engine
AICE_TRAIN_GET_RAILTYPE = 0x0F, ///< Check if we should build a railtype
AICE_ROAD_CHECK_ENGINE = 0x00, ///< Check if we should build an engine
AICE_ROAD_GET_FIRST_ENGINE = 0x01, ///< Unused, we check all
AICE_ROAD_GET_NUMBER_ENGINES = 0x02, ///< Unused, we check all
AICE_SHIP_CHECK_ENGINE = 0x00, ///< Check if we should build an engine
AICE_SHIP_GET_FIRST_ENGINE = 0x01, ///< Unused, we check all
AICE_SHIP_GET_NUMBER_ENGINES = 0x02, ///< Unused, we check all
AICE_AIRCRAFT_CHECK_ENGINE = 0x00, ///< Check if we should build an engine
AICE_STATION_GET_STATION_ID = 0x00, ///< Get a station ID to build
};
static const IndustryType IT_AI_UNKNOWN = 0xFE; ///< The AI has no specific industry in mind.
static const IndustryType IT_AI_TOWN = 0xFF; ///< The AI actually wants to transport to/from a town, not an industry.
void ResetGenericCallbacks();
void AddGenericCallback(uint8 feature, const GRFFile *file, const SpriteGroup *group);
uint16 GetAiPurchaseCallbackResult(uint8 feature, CargoID cargo_type, uint8 default_selection, IndustryType src_industry, IndustryType dst_industry, uint8 distance, AIConstructionEvent event, uint8 count, uint8 station_size, const GRFFile **file);
#endif /* NEWGRF_GENERIC_H */
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