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belugas

(svn r13226) -Feature: Allow to have more than only two airports per town. The number of airports is now controlled by the noise each of them generates, the distance from town's center and how tolerant the town is.
Initial concept : TTDPatch (moreairpots), Initial code : Pasky
Thanks to BigBB (help coding), Smatz Skidd13 and frosch for bugcatches and advices

/* $Id$ */

/** @file newgrf_generic.h Functions related to generic callbacks. */

#ifndef NEWGRF_GENERIC_H
#define NEWGRF_GENERIC_H

enum AIConstructionEvent {
	AICE_TRAIN_CHECK_RAIL_ENGINE     = 0x00, ///< Check if we should build an engine
	AICE_TRAIN_CHECK_ELRAIL_ENGINE   = 0x01,
	AICE_TRAIN_CHECK_MONORAIL_ENGINE = 0x02,
	AICE_TRAIN_CHECK_MAGLEV_ENGINE   = 0x03,
	AICE_TRAIN_GET_RAIL_WAGON        = 0x08,
	AICE_TRAIN_GET_ELRAIL_WAGON      = 0x09,
	AICE_TRAIN_GET_MONORAIL_WAGON    = 0x0A,
	AICE_TRAIN_GET_MAGLEV_WAGON      = 0x0B,
	AICE_TRAIN_GET_RAILTYPE          = 0x0F,

	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
};

void ResetGenericCallbacks();
void AddGenericCallback(uint8 feature, const struct GRFFile *file, const struct 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 struct GRFFile **file);

#endif /* NEWGRF_GENERIC_H */