OpenTTD
signs_cmd.cpp
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1 /*
2  * This file is part of OpenTTD.
3  * 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.
4  * 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.
5  * 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/>.
6  */
7 
10 #include "stdafx.h"
11 #include "landscape.h"
12 #include "company_func.h"
13 #include "signs_base.h"
14 #include "signs_func.h"
15 #include "command_func.h"
16 #include "tilehighlight_func.h"
17 #include "viewport_kdtree.h"
18 #include "window_func.h"
19 #include "string_func.h"
20 
21 #include "table/strings.h"
22 
23 #include "safeguards.h"
24 
27 
39 CommandCost CmdPlaceSign(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
40 {
41  /* Try to locate a new sign */
42  if (!Sign::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_SIGNS);
43 
44  /* Check sign text length if any */
45  if (!StrEmpty(text) && Utf8StringLength(text) >= MAX_LENGTH_SIGN_NAME_CHARS) return CMD_ERROR;
46 
47  /* When we execute, really make the sign */
48  if (flags & DC_EXEC) {
49  Sign *si = new Sign(_game_mode == GM_EDITOR ? OWNER_DEITY : _current_company);
50  int x = TileX(tile) * TILE_SIZE;
51  int y = TileY(tile) * TILE_SIZE;
52 
53  si->x = x;
54  si->y = y;
55  si->z = GetSlopePixelZ(x, y);
56  if (!StrEmpty(text)) {
57  si->name = stredup(text);
58  }
59  si->UpdateVirtCoord();
61  _new_sign_id = si->index;
62  }
63 
64  return CommandCost();
65 }
66 
78 CommandCost CmdRenameSign(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
79 {
80  Sign *si = Sign::GetIfValid(p1);
81  if (si == nullptr) return CMD_ERROR;
82  if (si->owner == OWNER_DEITY && _current_company != OWNER_DEITY && _game_mode != GM_EDITOR) return CMD_ERROR;
83 
84  /* Rename the signs when empty, otherwise remove it */
85  if (!StrEmpty(text)) {
87 
88  if (flags & DC_EXEC) {
89  /* Delete the old name */
90  free(si->name);
91  /* Assign the new one */
92  si->name = stredup(text);
93  if (_game_mode != GM_EDITOR) si->owner = _current_company;
94 
95  si->UpdateVirtCoord();
97  }
98  } else { // Delete sign
99  if (flags & DC_EXEC) {
100  si->sign.MarkDirty();
101  if (si->sign.kdtree_valid) _viewport_sign_kdtree.Remove(ViewportSignKdtreeItem::MakeSign(si->index));
102  delete si;
103 
105  }
106  }
107 
108  return CommandCost();
109 }
110 
119 void CcPlaceSign(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2, uint32 cmd)
120 {
121  if (result.Failed()) return;
122 
125 }
126 
134 {
135  DoCommandP(tile, 0, 0, CMD_PLACE_SIGN | CMD_MSG(STR_ERROR_CAN_T_PLACE_SIGN_HERE), CcPlaceSign);
136 }
CommandCost CmdRenameSign(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Rename a sign.
Definition: signs_cmd.cpp:78
static Titem * GetIfValid(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:302
static const uint MAX_LENGTH_SIGN_NAME_CHARS
The maximum length of a sign name in characters including &#39;\0&#39;.
Definition: signs_type.h:19
CommandCost CmdPlaceSign(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Place a sign at the given coordinates.
Definition: signs_cmd.cpp:39
static Titem * Get(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:291
static const CommandCost CMD_ERROR
Define a default return value for a failed command.
Definition: command_func.h:23
Sign list; Window numbers:
Definition: window_type.h:271
static uint TileX(TileIndex tile)
Get the X component of a tile.
Definition: map_func.h:205
Tindex index
Index of this pool item.
Definition: pool_type.hpp:189
Common return value for all commands.
Definition: command_type.h:23
Functions related to signs.
static const uint TILE_SIZE
Tile size in world coordinates.
Definition: tile_type.h:13
void MarkDirty(ZoomLevel maxzoom=ZOOM_LVL_MAX) const
Mark the sign dirty in all viewports.
Definition: viewport.cpp:1469
Functions related to low-level strings.
void ShowRenameSignWindow(const Sign *si)
Show the window to change the text of a sign.
Definition: signs_gui.cpp:569
DoCommandFlag
List of flags for a command.
Definition: command_type.h:342
Definition of base types and functions in a cross-platform compatible way.
A number of safeguards to prevent using unsafe methods.
SignID _new_sign_id
The last built sign.
Definition: signs_cmd.cpp:26
char * stredup(const char *s, const char *last)
Create a duplicate of the given string.
Definition: string.cpp:136
place a sign
Definition: command_type.h:249
bool DoCommandP(const CommandContainer *container, bool my_cmd)
Shortcut for the long DoCommandP when having a container with the data.
Definition: command.cpp:532
void CcPlaceSign(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2, uint32 cmd)
Callback function that is called after a sign is placed.
Definition: signs_cmd.cpp:119
bool Failed() const
Did this command fail?
Definition: command_type.h:159
void UpdateVirtCoord()
Update the coordinate of one sign.
Definition: signs.cpp:47
#define return_cmd_error(errcode)
Returns from a function with a specific StringID as error.
Definition: command_func.h:33
execute the given command
Definition: command_type.h:344
Functions related to companies.
static bool StrEmpty(const char *s)
Check if a string buffer is empty.
Definition: string_func.h:57
size_t Utf8StringLength(const char *s)
Get the length of an UTF-8 encoded string in number of characters and thus not the number of bytes th...
Definition: string.cpp:310
uint32 TileIndex
The index/ID of a Tile.
Definition: tile_type.h:78
void Remove(const T &element)
Remove a single element from the tree, if it exists.
Definition: kdtree.hpp:420
static uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition: map_func.h:215
static bool CanAllocateItem(size_t n=1)
Helper functions so we can use PoolItem::Function() instead of _poolitem_pool.Function() ...
Definition: pool_type.hpp:261
Functions related to OTTD&#39;s landscape.
Functions related to commands.
CompanyID _current_company
Company currently doing an action.
Definition: company_cmd.cpp:45
uint16 SignID
The type of the IDs of signs.
Definition: signs_type.h:14
static void free(const void *ptr)
Version of the standard free that accepts const pointers.
Definition: depend.cpp:129
#define CMD_MSG(x)
Used to combine a StringID with the command.
Definition: command_type.h:368
void ResetObjectToPlace()
Reset the cursor and mouse mode handling back to default (normal cursor, only clicking in windows)...
Definition: viewport.cpp:3353
Functions related to tile highlights.
Window functions not directly related to making/drawing windows.
void PlaceProc_Sign(TileIndex tile)
PlaceProc function, called when someone pressed the button if the sign-tool is selected.
Definition: signs_cmd.cpp:133
bool kdtree_valid
Are the sign data valid for use with the _viewport_sign_kdtree?
Definition: viewport_type.h:58
The object is owned by a superuser / goal script.
Definition: company_type.h:27
void InvalidateWindowData(WindowClass cls, WindowNumber number, int data, bool gui_scope)
Mark window data of the window of a given class and specific window number as invalid (in need of re-...
Definition: window.cpp:3316
Base class for signs.