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/* $Id$ */

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/** @file signs.h */

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#ifndef SIGNS_H

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#define SIGNS_H

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#include "oldpool.h"

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struct Sign;

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DECLARE_OLD_POOL(Sign, Sign, 2, 16000)

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struct Sign : PoolItem<Sign, SignID, &_Sign_pool> {

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	char *name;

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	ViewportSign sign;

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	int32        x;

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	int32        y;

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	byte         z;

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	PlayerByte   owner; // placed by this player. Anyone can delete them though. OWNER_NONE for gray signs from old games.

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	/**

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	 * Creates a new sign

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	 */

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	Sign(PlayerID owner = INVALID_PLAYER);

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	/** Destroy the sign */

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	~Sign();

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	inline bool IsValid() const { return this->owner != INVALID_PLAYER; }

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};

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enum {

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	INVALID_SIGN = 0xFFFF,

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};

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extern SignID _new_sign_id;

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static inline SignID GetMaxSignIndex()

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{

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	/* TODO - This isn't the real content of the function, but

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	 *  with the new pool-system this will be replaced with one that

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	 *  _really_ returns the highest index. Now it just returns

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	 *  the next safe value we are sure about everything is below.

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	 */

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	return GetSignPoolSize() - 1;

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}

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static inline uint GetNumSigns()

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{

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	extern uint _total_signs;

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	return _total_signs;

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}

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static inline bool IsValidSignID(uint index)

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{

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	return index < GetSignPoolSize() && GetSign(index)->IsValid();

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}

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#define FOR_ALL_SIGNS_FROM(ss, start) for (ss = GetSign(start); ss != NULL; ss = (ss->index + 1U < GetSignPoolSize()) ? GetSign(ss->index + 1U) : NULL) if (ss->IsValid())

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#define FOR_ALL_SIGNS(ss) FOR_ALL_SIGNS_FROM(ss, 0)

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extern bool _sign_sort_dirty;

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void UpdateAllSignVirtCoords();

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void PlaceProc_Sign(TileIndex tile);

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/* signs_gui.cpp */

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void ShowRenameSignWindow(const Sign *si);

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void ShowSignList();

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#endif /* SIGNS_H */