1 /* $Id$ */

     2 

     3 /** @file signs.h */

     4 

     5 #ifndef SIGNS_H

     6 #define SIGNS_H

     7 

     8 #include "oldpool.h"

     9 

    10 typedef uint16 SignID;

    11 struct Sign;

    12 DECLARE_OLD_POOL(Sign, Sign, 2, 16000)

    13 

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

    15 	char *name;

    16 	ViewportSign sign;

    17 	int32        x;

    18 	int32        y;

    19 	byte         z;

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

    21 

    22 	/**

    23 	 * Creates a new sign

    24 	 */

    25 	Sign(PlayerID owner = INVALID_PLAYER);

    26 

    27 	/** Destroy the sign */

    28 	~Sign();

    29 

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

    31 };

    32 

    33 enum {

    34 	INVALID_SIGN = 0xFFFF,

    35 };

    36 

    37 extern SignID _new_sign_id;

    38 

    39 

    40 static inline SignID GetMaxSignIndex()

    41 {

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

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

    44 	 *  _really_ returns the highest index. Now it just returns

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

    46 	 */

    47 	return GetSignPoolSize() - 1;

    48 }

    49 

    50 static inline uint GetNumSigns()

    51 {

    52 	extern uint _total_signs;

    53 	return _total_signs;

    54 }

    55 

    56 static inline bool IsValidSignID(uint index)

    57 {

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

    59 }

    60 

    61 #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())

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

    63 

    64 extern bool _sign_sort_dirty;

    65 

    66 void UpdateAllSignVirtCoords();

    67 void PlaceProc_Sign(TileIndex tile);

    68 

    69 /* signs_gui.cpp */

    70 void ShowRenameSignWindow(const Sign *si);

    71 

    72 void ShowSignList();

    73 

    74 #endif /* SIGNS_H */