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Location: cpp/openttd-patchpack/source/src/signs.cpp - annotation
r7810:36ef334ff30e
5.7 KiB
text/x-c
(svn r11360) -Fix [FS#1375]: do not crash when trying to "draw" an invalid string, just draw a message saying it is invalid.
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/** @file signs.cpp */
#include "stdafx.h"
#include "openttd.h"
#include "table/strings.h"
#include "strings.h"
#include "functions.h"
#include "landscape.h"
#include "player.h"
#include "signs.h"
#include "saveload.h"
#include "command.h"
#include "variables.h"
#include "string.h"
#include "misc/autoptr.hpp"
SignID _new_sign_id;
uint _total_signs;
/* Initialize the sign-pool */
DEFINE_OLD_POOL_GENERIC(Sign, Sign)
Sign::Sign(StringID string)
{
this->str = string;
}
Sign::~Sign()
{
DeleteName(this->str);
this->str = STR_NULL;
}
/**
*
* Update the coordinate of one sign
* @param si Pointer to the Sign
*
*/
static void UpdateSignVirtCoords(Sign *si)
{
Point pt = RemapCoords(si->x, si->y, si->z);
SetDParam(0, si->index);
UpdateViewportSignPos(&si->sign, pt.x, pt.y - 6, STR_2806);
}
/**
*
* Update the coordinates of all signs
*
*/
void UpdateAllSignVirtCoords()
{
Sign *si;
FOR_ALL_SIGNS(si) UpdateSignVirtCoords(si);
}
/**
* Marks the region of a sign as dirty.
*
* This function marks the sign in all viewports as dirty for repaint.
*
* @param si Pointer to the Sign
* @ingroup dirty
*/
static void MarkSignDirty(Sign *si)
{
/* We use ZOOM_LVL_MAX here, as every viewport can have an other zoom,
* and there is no way for us to know which is the biggest. So make the
* biggest area dirty, and we are safe for sure. */
MarkAllViewportsDirty(
si->sign.left - 6,
si->sign.top - 3,
si->sign.left + ScaleByZoom(si->sign.width_1 + 12, ZOOM_LVL_MAX),
si->sign.top + ScaleByZoom(12, ZOOM_LVL_MAX));
}
/**
* Place a sign at the given coordinates. Ownership of sign has
* no effect whatsoever except for the colour the sign gets for easy recognition,
* but everybody is able to rename/remove it.
* @param tile tile to place sign at
* @param flags type of operation
* @param p1 unused
* @param p2 unused
*/
CommandCost CmdPlaceSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
/* Try to locate a new sign */
Sign *si = new Sign(STR_280A_SIGN);
if (si == NULL) return_cmd_error(STR_2808_TOO_MANY_SIGNS);
AutoPtrT<Sign> s_auto_delete = si;
/* When we execute, really make the sign */
if (flags & DC_EXEC) {
int x = TileX(tile) * TILE_SIZE;
int y = TileY(tile) * TILE_SIZE;
si->x = x;
si->y = y;
si->owner = _current_player; // owner of the sign; just eyecandy
si->z = GetSlopeZ(x, y);
UpdateSignVirtCoords(si);
MarkSignDirty(si);
InvalidateWindow(WC_SIGN_LIST, 0);
_sign_sort_dirty = true;
_new_sign_id = si->index;
_total_signs++;
s_auto_delete.Detach();
}
return CommandCost();
}
/** Rename a sign. If the new name of the sign is empty, we assume
* the user wanted to delete it. So delete it. Ownership of signs
* has no meaning/effect whatsoever except for eyecandy
* @param tile unused
* @param flags type of operation
* @param p1 index of the sign to be renamed/removed
* @param p2 unused
* @return 0 if succesfull, otherwise CMD_ERROR
*/
CommandCost CmdRenameSign(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
if (!IsValidSignID(p1)) return CMD_ERROR;
/* If _cmd_text 0 means the new text for the sign is non-empty.
* So rename the sign. If it is empty, it has no name, so delete it */
if (!StrEmpty(_cmd_text)) {
/* Create the name */
StringID str = AllocateName(_cmd_text, 0);
if (str == 0) return CMD_ERROR;
if (flags & DC_EXEC) {
Sign *si = GetSign(p1);
/* Delete the old name */
DeleteName(si->str);
/* Assign the new one */
si->str = str;
si->owner = _current_player;
/* Update; mark sign dirty twice, because it can either becom longer, or shorter */
MarkSignDirty(si);
UpdateSignVirtCoords(si);
MarkSignDirty(si);
InvalidateWindow(WC_SIGN_LIST, 0);
_sign_sort_dirty = true;
} else {
/* Free the name, because we did not assign it yet */
DeleteName(str);
}
} else { // Delete sign
if (flags & DC_EXEC) {
Sign *si = GetSign(p1);
MarkSignDirty(si);
delete si;
InvalidateWindow(WC_SIGN_LIST, 0);
_sign_sort_dirty = true;
_total_signs--;
}
}
return CommandCost();
}
/**
* Callback function that is called after a sign is placed
* @param success of the operation
* @param tile unused
* @param p1 unused
* @param p2 unused
*/
void CcPlaceSign(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
if (success) {
ShowRenameSignWindow(GetSign(_new_sign_id));
ResetObjectToPlace();
}
}
/**
*
* PlaceProc function, called when someone pressed the button if the
* sign-tool is selected
* @param tile on which to place the sign
*/
void PlaceProc_Sign(TileIndex tile)
{
DoCommandP(tile, 0, 0, CcPlaceSign, CMD_PLACE_SIGN | CMD_MSG(STR_2809_CAN_T_PLACE_SIGN_HERE));
}
/**
*
* Initialize the signs
*
*/
void InitializeSigns()
{
_total_signs = 0;
_Sign_pool.CleanPool();
_Sign_pool.AddBlockToPool();
}
static const SaveLoad _sign_desc[] = {
SLE_VAR(Sign, str, SLE_UINT16),
SLE_CONDVAR(Sign, x, SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
SLE_CONDVAR(Sign, y, SLE_FILE_I16 | SLE_VAR_I32, 0, 4),
SLE_CONDVAR(Sign, x, SLE_INT32, 5, SL_MAX_VERSION),
SLE_CONDVAR(Sign, y, SLE_INT32, 5, SL_MAX_VERSION),
SLE_CONDVAR(Sign, owner, SLE_UINT8, 6, SL_MAX_VERSION),
SLE_VAR(Sign, z, SLE_UINT8),
SLE_END()
};
/**
*
* Save all signs
*
*/
static void Save_SIGN()
{
Sign *si;
FOR_ALL_SIGNS(si) {
SlSetArrayIndex(si->index);
SlObject(si, _sign_desc);
}
}
/**
*
* Load all signs
*
*/
static void Load_SIGN()
{
_total_signs = 0;
int index;
while ((index = SlIterateArray()) != -1) {
Sign *si = new (index) Sign();
SlObject(si, _sign_desc);
_total_signs++;
}
_sign_sort_dirty = true;
}
extern const ChunkHandler _sign_chunk_handlers[] = {
{ 'SIGN', Save_SIGN, Load_SIGN, CH_ARRAY | CH_LAST},
};
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