OpenTTD Source  20241108-master-g80f628063a
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 #include "signs_cmd.h"
21 
22 #include "table/strings.h"
23 
24 #include "safeguards.h"
25 
35 std::tuple<CommandCost, SignID> CmdPlaceSign(DoCommandFlag flags, TileIndex tile, const std::string &text)
36 {
37  /* Try to locate a new sign */
38  if (!Sign::CanAllocateItem()) return { CommandCost(STR_ERROR_TOO_MANY_SIGNS), INVALID_SIGN };
39 
40  /* Check sign text length if any */
42 
43  /* When we execute, really make the sign */
44  if (flags & DC_EXEC) {
45  Sign *si = new Sign(_game_mode == GM_EDITOR ? OWNER_DEITY : _current_company);
46  int x = TileX(tile) * TILE_SIZE;
47  int y = TileY(tile) * TILE_SIZE;
48 
49  si->x = x;
50  si->y = y;
51  si->z = GetSlopePixelZ(x, y);
52  if (!text.empty()) {
53  si->name = text;
54  }
55  si->UpdateVirtCoord();
57  return { CommandCost(), si->index };
58  }
59 
60  return { CommandCost(), INVALID_SIGN };
61 }
62 
72 CommandCost CmdRenameSign(DoCommandFlag flags, SignID sign_id, const std::string &text)
73 {
74  Sign *si = Sign::GetIfValid(sign_id);
75  if (si == nullptr) return CMD_ERROR;
76  if (!CompanyCanRenameSign(si)) return CMD_ERROR;
77 
78  /* Rename the signs when empty, otherwise remove it */
79  if (!text.empty()) {
81 
82  if (flags & DC_EXEC) {
83  /* Assign the new one */
84  si->name = text;
85  if (_game_mode != GM_EDITOR) si->owner = _current_company;
86 
87  si->UpdateVirtCoord();
89  }
90  } else { // Delete sign
91  if (flags & DC_EXEC) {
92  si->sign.MarkDirty();
93  if (si->sign.kdtree_valid) _viewport_sign_kdtree.Remove(ViewportSignKdtreeItem::MakeSign(si->index));
94  delete si;
95 
97  }
98  }
99 
100  return CommandCost();
101 }
102 
108 void CcPlaceSign(Commands, const CommandCost &result, SignID new_sign)
109 {
110  if (result.Failed()) return;
111 
112  ShowRenameSignWindow(Sign::Get(new_sign));
114 }
115 
123 {
124  Command<CMD_PLACE_SIGN>::Post(STR_ERROR_CAN_T_PLACE_SIGN_HERE, CcPlaceSign, tile, {});
125 }
Common return value for all commands.
Definition: command_type.h:23
bool Failed() const
Did this command fail?
Definition: command_type.h:171
void Remove(const T &element)
Remove a single element from the tree, if it exists.
Definition: kdtree.hpp:417
Functions related to commands.
static const CommandCost CMD_ERROR
Define a default return value for a failed command.
Definition: command_func.h:28
DoCommandFlag
List of flags for a command.
Definition: command_type.h:374
@ DC_EXEC
execute the given command
Definition: command_type.h:376
Commands
List of commands.
Definition: command_type.h:187
CompanyID _current_company
Company currently doing an action.
Definition: company_cmd.cpp:53
Functions related to companies.
@ OWNER_DEITY
The object is owned by a superuser / goal script.
Definition: company_type.h:27
void MarkDirty(ZoomLevel maxzoom=ZOOM_LVL_MAX) const
Mark the sign dirty in all viewports.
Definition: viewport.cpp:1491
int GetSlopePixelZ(int x, int y, bool ground_vehicle)
Return world Z coordinate of a given point of a tile.
Definition: landscape.cpp:303
Functions related to OTTD's landscape.
static debug_inline uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition: map_func.h:425
static debug_inline uint TileX(TileIndex tile)
Get the X component of a tile.
Definition: map_func.h:415
A number of safeguards to prevent using unsafe methods.
bool CompanyCanRenameSign(const Sign *si)
Check if the current company can rename a given sign.
Definition: signs.cpp:71
Base class for signs.
std::tuple< CommandCost, SignID > CmdPlaceSign(DoCommandFlag flags, TileIndex tile, const std::string &text)
Place a sign at the given coordinates.
Definition: signs_cmd.cpp:35
void PlaceProc_Sign(TileIndex tile)
PlaceProc function, called when someone pressed the button if the sign-tool is selected.
Definition: signs_cmd.cpp:122
void CcPlaceSign(Commands, const CommandCost &result, SignID new_sign)
Callback function that is called after a sign is placed.
Definition: signs_cmd.cpp:108
CommandCost CmdRenameSign(DoCommandFlag flags, SignID sign_id, const std::string &text)
Rename a sign.
Definition: signs_cmd.cpp:72
Command definitions related to signs.
Functions related to signs.
void ShowRenameSignWindow(const Sign *si)
Show the window to change the text of a sign.
Definition: signs_gui.cpp:573
uint16_t SignID
The type of the IDs of signs.
Definition: signs_type.h:14
static const SignID INVALID_SIGN
Sentinel for an invalid sign.
Definition: signs_type.h:17
static const uint MAX_LENGTH_SIGN_NAME_CHARS
The maximum length of a sign name in characters including '\0'.
Definition: signs_type.h:19
Definition of base types and functions in a cross-platform compatible way.
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:359
Functions related to low-level strings.
Tindex index
Index of this pool item.
Definition: pool_type.hpp:238
static Titem * Get(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:339
static bool CanAllocateItem(size_t n=1)
Helper functions so we can use PoolItem::Function() instead of _poolitem_pool.Function()
Definition: pool_type.hpp:309
static Titem * GetIfValid(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:350
void UpdateVirtCoord()
Update the coordinate of one sign.
Definition: signs.cpp:46
bool kdtree_valid
Are the sign data valid for use with the _viewport_sign_kdtree?
Definition: viewport_type.h:52
static const uint TILE_SIZE
Tile size in world coordinates.
Definition: tile_type.h:15
Functions related to tile highlights.
void ResetObjectToPlace()
Reset the cursor and mouse mode handling back to default (normal cursor, only clicking in windows).
Definition: viewport.cpp:3498
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:3211
Window functions not directly related to making/drawing windows.
@ WC_SIGN_LIST
Sign list; Window numbers:
Definition: window_type.h:278