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michi_cc
(svn r17708) -Feature [FS#2053]: [OSX] Implement clipboard support for OS X.
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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_station.h Header file for NewGRF stations */

#ifndef NEWGRF_STATION_H
#define NEWGRF_STATION_H

#include "engine_type.h"
#include "newgrf_callbacks.h"
#include "newgrf_cargo.h"
#include "tile_type.h"
#include "station_type.h"
#include "strings_type.h"
#include "sprite.h"
#include "direction_type.h"
#include "newgrf.h"

enum StationClassID {
	STAT_CLASS_BEGIN = 0,    ///< the lowest valid value
	STAT_CLASS_DFLT = 0,     ///< Default station class.
	STAT_CLASS_WAYP,         ///< Waypoint class.
	STAT_CLASS_MAX = 32,     ///< Maximum number of classes.
};
typedef SimpleTinyEnumT<StationClassID, byte> StationClassIDByte;

/** Allow incrementing of StationClassID variables */
DECLARE_POSTFIX_INCREMENT(StationClassID);

enum StationSpecFlags {
	SSF_SEPARATE_GROUND,      ///< Use different sprite set for ground sprites.
	SSF_DIV_BY_STATION_SIZE,  ///< Divide cargo amount by station size.
	SSF_CB141_RANDOM_BITS,    ///< Callback 141 needs random bits.
	SSF_CUSTOM_FOUNDATIONS,   ///< Draw custom foundations.
	SSF_EXTENDED_FOUNDATIONS, ///< Extended foundation block instead of simple.
};

/* Station layout for given dimensions - it is a two-dimensional array
 * where index is computed as (x * platforms) + platform. */
typedef byte *StationLayout;

struct StationSpec {
	const struct GRFFile *grffile; ///< ID of GRF file station belongs to.
	int localidx; ///< Index within GRF file of station.

	bool allocated; ///< Flag whether this station has been added to a station class list

	StationClassID sclass; ///< The class to which this spec belongs.
	StringID name; ///< Name of this station.

	/**
	 * Bitmask of number of platforms available for the station.
	 * 0..6 correpsond to 1..7, while bit 7 corresponds to >7 platforms.
	 */
	byte disallowed_platforms;
	/**
	 * Bitmask of platform lengths available for the station.
	 * 0..6 correpsond to 1..7, while bit 7 corresponds to >7 tiles long.
	 */
	byte disallowed_lengths;

	/** Number of tile layouts.
	 * A minimum of 8 is required is required for stations.
	 * 0-1 = plain platform
	 * 2-3 = platform with building
	 * 4-5 = platform with roof, left side
	 * 6-7 = platform with roof, right side
	 */
	uint tiles;
	DrawTileSprites *renderdata; ///< Array of tile layouts.
	bool copied_renderdata;

	/** Cargo threshold for choosing between little and lots of cargo
	 * @note little/lots are equivalent to the moving/loading states for vehicles
	 */
	uint16 cargo_threshold;

	uint32 cargo_triggers; ///< Bitmask of cargo types which cause trigger re-randomizing

	byte callback_mask; ///< Bitmask of station callbacks that have to be called

	byte flags; ///< Bitmask of flags, bit 0: use different sprite set; bit 1: divide cargo about by station size

	byte pylons;  ///< Bitmask of base tiles (0 - 7) which should contain elrail pylons
	byte wires;   ///< Bitmask of base tiles (0 - 7) which should contain elrail wires
	byte blocked; ///< Bitmask of base tiles (0 - 7) which are blocked to trains

	byte lengths;
	byte *platforms;
	StationLayout **layouts;
	bool copied_layouts;

	uint8  anim_frames;
	uint8  anim_status;
	uint8  anim_speed;
	uint16 anim_triggers;

	/**
	 * NUM_CARGO real cargo plus three pseudo cargo sprite groups.
	 * Used for obtaining the sprite offset of custom sprites, and for
	 * evaluating callbacks.
	 */
	const struct SpriteGroup *spritegroup[NUM_CARGO + 3];
};

/**
 * Struct containing information relating to station classes.
 */
struct StationClass {
	uint32 id;          ///< ID of this class, e.g. 'DFLT', 'WAYP', etc.
	StringID name;      ///< Name of this class.
	uint stations;      ///< Number of stations in this class.
	StationSpec **spec; ///< Array of station specifications.
};

void ResetStationClasses();
StationClassID AllocateStationClass(uint32 cls);
void SetStationClassName(StationClassID sclass, StringID name);
StringID GetStationClassName(StationClassID sclass);
const StationSpec *GetStationSpec(TileIndex t);

uint GetNumStationClasses();
uint GetNumCustomStations(StationClassID sclass);

void SetCustomStationSpec(StationSpec *statspec);
const StationSpec *GetCustomStationSpec(StationClassID sclass, uint station);
const StationSpec *GetCustomStationSpecByGrf(uint32 grfid, byte localidx, int *index);

/* Evaluate a tile's position within a station, and return the result a bitstuffed format. */
uint32 GetPlatformInfo(Axis axis, byte tile, int platforms, int length, int x, int y, bool centred);

/* Get sprite offset for a given custom station and station structure (may be
 * NULL - that means we are in a build dialog). The station structure is used
 * for variational sprite groups. */
SpriteID GetCustomStationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile);
SpriteID GetCustomStationGroundRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile);
uint16 GetStationCallback(CallbackID callback, uint32 param1, uint32 param2, const StationSpec *statspec, const BaseStation *st, TileIndex tile);

/* Allocate a StationSpec to a Station. This is called once per build operation. */
int AllocateSpecToStation(const StationSpec *statspec, BaseStation *st, bool exec);

/* Deallocate a StationSpec from a Station. Called when removing a single station tile. */
void DeallocateSpecFromStation(BaseStation *st, byte specindex);

/* Draw representation of a station tile for GUI purposes. */
bool DrawStationTile(int x, int y, RailType railtype, Axis axis, StationClassID sclass, uint station);

enum StatAnimTrigger {
	STAT_ANIM_BUILT,
	STAT_ANIM_NEW_CARGO,
	STAT_ANIM_CARGO_TAKEN,
	STAT_ANIM_TRAIN_ARRIVES,
	STAT_ANIM_TRAIN_DEPARTS,
	STAT_ANIM_TRAIN_LOADS,
	STAT_ANIM_250_TICKS,
};

void AnimateStationTile(TileIndex tile);
void StationAnimationTrigger(const BaseStation *st, TileIndex tile, StatAnimTrigger trigger, CargoID cargo_type = CT_INVALID);
void StationUpdateAnimTriggers(BaseStation *st);

#endif /* NEWGRF_STATION_H */