tron@2186: /* $Id$ */
tron@2186: 
truelight@988: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
truelight@988: #include "table/strings.h"
tron@2163: #include "functions.h"
tron@2154: #include "player.h"
truelight@988: #include "signs.h"
truelight@988: #include "saveload.h"
truelight@988: #include "command.h"
tron@2153: #include "variables.h"
truelight@988: 
truelight@4349: static Sign *_new_sign;
tron@2789: 
truelight@1283: /**
truelight@1283:  * Called if a new block is added to the sign-pool
truelight@1283:  */
truelight@1283: static void SignPoolNewBlock(uint start_item)
truelight@1283: {
truelight@4349: 	Sign *si;
truelight@1283: 
truelight@4346: 	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
truelight@4346: 	 * TODO - This is just a temporary stage, this will be removed. */
tron@4979: 	for (si = GetSign(start_item); si != NULL; si = (si->index + 1U < GetSignPoolSize()) ? GetSign(si->index + 1U) : NULL) si->index = start_item++;
truelight@1283: }
truelight@1283: 
truelight@1283: /* Initialize the sign-pool */
matthijs@5216: DEFINE_OLD_POOL(Sign, Sign, SignPoolNewBlock, NULL)
truelight@1283: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Update the coordinate of one sign
truelight@988:  *
truelight@988:  */
truelight@4349: static void UpdateSignVirtCoords(Sign *si)
truelight@988: {
truelight@4349: 	Point pt = RemapCoords(si->x, si->y, si->z);
truelight@4349: 	SetDParam(0, si->str);
truelight@4349: 	UpdateViewportSignPos(&si->sign, pt.x, pt.y - 6, STR_2806);
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@990:  * Update the coordinates of all signs
truelight@988:  *
truelight@988:  */
tron@1093: void UpdateAllSignVirtCoords(void)
truelight@988: {
truelight@4349: 	Sign *si;
truelight@988: 
truelight@4349: 	FOR_ALL_SIGNS(si) UpdateSignVirtCoords(si);
truelight@988: 
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Marks the region of a sign as dirty
truelight@988:  *
truelight@4349:  * @param si Pointer to the Sign
truelight@988:  */
truelight@4349: static void MarkSignDirty(Sign *si)
truelight@988: {
truelight@988: 	MarkAllViewportsDirty(
truelight@4349: 		si->sign.left - 6,
truelight@4349: 		si->sign.top  - 3,
truelight@4349: 		si->sign.left + si->sign.width_1 * 4 + 12,
truelight@4349: 		si->sign.top  + 45);
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Allocates a new sign
truelight@988:  *
truelight@988:  * @return The pointer to the new sign, or NULL if there is no more free space
truelight@988:  */
truelight@4349: static Sign *AllocateSign(void)
truelight@988: {
truelight@4349: 	Sign *si;
truelight@4346: 
truelight@4346: 	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
truelight@4346: 	 * TODO - This is just a temporary stage, this will be removed. */
tron@4979: 	for (si = GetSign(0); si != NULL; si = (si->index + 1U < GetSignPoolSize()) ? GetSign(si->index + 1U) : NULL) {
truelight@4349: 		if (!IsValidSign(si)) {
truelight@4349: 			uint index = si->index;
truelight@1575: 
truelight@4349: 			memset(si, 0, sizeof(Sign));
truelight@4349: 			si->index = index;
truelight@1575: 
truelight@4349: 			return si;
truelight@1575: 		}
truelight@1575: 	}
truelight@988: 
truelight@1283: 	/* Check if we can add a block to the pool */
tron@4979: 	if (AddBlockToPool(&_Sign_pool))
truelight@1283: 		return AllocateSign();
truelight@1283: 
truelight@988: 	return NULL;
truelight@988: }
truelight@988: 
truelight@4400: void DestroySign(Sign *si)
truelight@4400: {
truelight@4400: 	DeleteName(si->str);
truelight@4400: }
truelight@4400: 
truelight@4400: /**
truelight@4400:  * Place a sign at the given coordinates. Ownership of sign has
Darkvater@1793:  * no effect whatsoever except for the colour the sign gets for easy recognition,
Darkvater@1793:  * but everybody is able to rename/remove it.
tron@3491:  * @param tile tile to place sign at
Darkvater@1793:  * @param p1 unused
Darkvater@1793:  * @param p2 unused
truelight@988:  */
tron@3491: int32 CmdPlaceSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@988: {
truelight@4349: 	Sign *si;
truelight@988: 
truelight@988: 	/* Try to locate a new sign */
truelight@4349: 	si = AllocateSign();
truelight@4349: 	if (si == NULL) return_cmd_error(STR_2808_TOO_MANY_SIGNS);
truelight@988: 
truelight@988: 	/* When we execute, really make the sign */
truelight@988: 	if (flags & DC_EXEC) {
tron@3491: 		int x = TileX(tile) * TILE_SIZE;
tron@3491: 		int y = TileY(tile) * TILE_SIZE;
tron@3491: 
truelight@4349: 		si->str = STR_280A_SIGN;
truelight@4349: 		si->x = x;
truelight@4349: 		si->y = y;
truelight@4349: 		si->owner = _current_player; // owner of the sign; just eyecandy
truelight@4349: 		si->z = GetSlopeZ(x,y);
truelight@4349: 		UpdateSignVirtCoords(si);
truelight@4349: 		MarkSignDirty(si);
truelight@1575: 		InvalidateWindow(WC_SIGN_LIST, 0);
truelight@1575: 		_sign_sort_dirty = true;
truelight@4349: 		_new_sign = si;
truelight@988: 	}
truelight@988: 
truelight@988: 	return 0;
truelight@988: }
truelight@988: 
Darkvater@1793: /** Rename a sign. If the new name of the sign is empty, we assume
Darkvater@1793:  * the user wanted to delete it. So delete it. Ownership of signs
Darkvater@1793:  * has no meaning/effect whatsoever except for eyecandy
tron@3491:  * @param tile unused
Darkvater@1793:  * @param p1 index of the sign to be renamed/removed
Darkvater@1793:  * @param p2 unused
truelight@988:  */
tron@3491: int32 CmdRenameSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@988: {
truelight@4352: 	if (!IsValidSignID(p1)) return CMD_ERROR;
Darkvater@1837: 
Darkvater@1837: 	/* If _cmd_text 0 means the new text for the sign is non-empty.
Darkvater@1793: 	 * So rename the sign. If it is empty, it has no name, so delete it */
Darkvater@1837: 	if (_cmd_text[0] != '\0') {
truelight@988: 		/* Create the name */
tron@1820: 		StringID str = AllocateName(_cmd_text, 0);
Darkvater@1793: 		if (str == 0) return CMD_ERROR;
truelight@988: 
truelight@988: 		if (flags & DC_EXEC) {
truelight@4349: 			Sign *si = GetSign(p1);
truelight@988: 
truelight@988: 			/* Delete the old name */
truelight@4349: 			DeleteName(si->str);
truelight@988: 			/* Assign the new one */
truelight@4349: 			si->str = str;
truelight@4349: 			si->owner = _current_player;
truelight@988: 
Darkvater@1793: 			/* Update; mark sign dirty twice, because it can either becom longer, or shorter */
truelight@4349: 			MarkSignDirty(si);
truelight@4349: 			UpdateSignVirtCoords(si);
truelight@4349: 			MarkSignDirty(si);
truelight@1575: 			InvalidateWindow(WC_SIGN_LIST, 0);
truelight@1575: 			_sign_sort_dirty = true;
truelight@988: 		} else {
truelight@988: 			/* Free the name, because we did not assign it yet */
truelight@988: 			DeleteName(str);
truelight@988: 		}
Darkvater@1793: 	} else { /* Delete sign */
truelight@988: 		if (flags & DC_EXEC) {
truelight@4349: 			Sign *si = GetSign(p1);
truelight@988: 
truelight@4384: 			MarkSignDirty(si);
truelight@4384: 			DeleteSign(si);
truelight@988: 
truelight@1575: 			InvalidateWindow(WC_SIGN_LIST, 0);
truelight@1575: 			_sign_sort_dirty = true;
truelight@988: 		}
truelight@988: 	}
truelight@988: 
truelight@988: 	return 0;
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Callback function that is called after a sign is placed
truelight@988:  *
truelight@988:  */
tron@1977: void CcPlaceSign(bool success, TileIndex tile, uint32 p1, uint32 p2)
truelight@988: {
truelight@988: 	if (success) {
truelight@4349: 		ShowRenameSignWindow(_new_sign);
truelight@988: 		ResetObjectToPlace();
truelight@988: 	}
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * PlaceProc function, called when someone pressed the button if the
truelight@988:  *  sign-tool is selected
truelight@988:  *
truelight@988:  */
tron@1977: void PlaceProc_Sign(TileIndex tile)
truelight@988: {
tron@2783: 	DoCommandP(tile, 0, 0, CcPlaceSign, CMD_PLACE_SIGN | CMD_MSG(STR_2809_CAN_T_PLACE_SIGN_HERE));
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Initialize the signs
truelight@988:  *
truelight@988:  */
tron@1093: void InitializeSigns(void)
truelight@988: {
tron@4979: 	CleanPool(&_Sign_pool);
tron@4979: 	AddBlockToPool(&_Sign_pool);
truelight@988: }
truelight@988: 
Darkvater@1881: static const SaveLoad _sign_desc[] = {
truelight@4349:       SLE_VAR(Sign, str,   SLE_UINT16),
truelight@4349:   SLE_CONDVAR(Sign, x,     SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
truelight@4349:   SLE_CONDVAR(Sign, y,     SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
truelight@4349:   SLE_CONDVAR(Sign, x,     SLE_INT32,                  5, SL_MAX_VERSION),
truelight@4349:   SLE_CONDVAR(Sign, y,     SLE_INT32,                  5, SL_MAX_VERSION),
truelight@4349:   SLE_CONDVAR(Sign, owner, SLE_UINT8,                  6, SL_MAX_VERSION),
truelight@4349:       SLE_VAR(Sign, z,     SLE_UINT8),
truelight@988: 	SLE_END()
truelight@988: };
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Save all signs
truelight@988:  *
truelight@988:  */
tron@1093: static void Save_SIGN(void)
truelight@988: {
truelight@4349: 	Sign *si;
truelight@988: 
truelight@4349: 	FOR_ALL_SIGNS(si) {
truelight@4349: 		SlSetArrayIndex(si->index);
truelight@4349: 		SlObject(si, _sign_desc);
truelight@988: 	}
truelight@988: }
truelight@988: 
truelight@988: /**
truelight@988:  *
truelight@988:  * Load all signs
truelight@988:  *
truelight@988:  */
tron@1093: static void Load_SIGN(void)
truelight@988: {
truelight@988: 	int index;
truelight@988: 	while ((index = SlIterateArray()) != -1) {
truelight@4349: 		Sign *si;
truelight@988: 
tron@4979: 		if (!AddBlockIfNeeded(&_Sign_pool, index))
truelight@1283: 			error("Signs: failed loading savegame: too many signs");
truelight@1283: 
truelight@4349: 		si = GetSign(index);
truelight@4349: 		SlObject(si, _sign_desc);
truelight@988: 	}
truelight@1575: 
truelight@1575: 	_sign_sort_dirty = true;
truelight@988: }
truelight@988: 
truelight@988: const ChunkHandler _sign_chunk_handlers[] = {
truelight@988: 	{ 'SIGN', Save_SIGN, Load_SIGN, CH_ARRAY | CH_LAST},
truelight@988: };