mirror of https://github.com/OpenTTD/OpenTTD.git
126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file signs_cmd.cpp Handling of sign related commands. */
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#include "stdafx.h"
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#include "landscape.h"
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#include "company_func.h"
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#include "signs_base.h"
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#include "signs_func.h"
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#include "command_func.h"
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#include "tilehighlight_func.h"
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#include "viewport_kdtree.h"
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#include "window_func.h"
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#include "string_func.h"
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#include "signs_cmd.h"
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#include "table/strings.h"
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#include "safeguards.h"
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/**
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* Place a sign at the given coordinates. Ownership of sign has
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* no effect whatsoever except for the colour the sign gets for easy recognition,
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* but everybody is able to rename/remove it.
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* @param tile tile to place sign at
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* @param flags type of operation
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* @param text contents of the sign
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* @return the cost of this operation + the ID of the new sign or an error
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*/
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std::tuple<CommandCost, SignID> CmdPlaceSign(DoCommandFlag flags, TileIndex tile, const std::string &text)
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{
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/* Try to locate a new sign */
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if (!Sign::CanAllocateItem()) return { CommandCost(STR_ERROR_TOO_MANY_SIGNS), INVALID_SIGN };
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/* Check sign text length if any */
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if (Utf8StringLength(text) >= MAX_LENGTH_SIGN_NAME_CHARS) return { CMD_ERROR, INVALID_SIGN };
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/* When we execute, really make the sign */
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if (flags & DC_EXEC) {
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Sign *si = new Sign(_game_mode == GM_EDITOR ? OWNER_DEITY : _current_company);
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int x = TileX(tile) * TILE_SIZE;
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int y = TileY(tile) * TILE_SIZE;
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si->x = x;
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si->y = y;
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si->z = GetSlopePixelZ(x, y);
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if (!text.empty()) {
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si->name = text;
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}
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si->UpdateVirtCoord();
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InvalidateWindowData(WC_SIGN_LIST, 0, 0);
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return { CommandCost(), si->index };
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}
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return { CommandCost(), INVALID_SIGN };
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}
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/**
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* Rename a sign. If the new name of the sign is empty, we assume
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* the user wanted to delete it. So delete it. Ownership of signs
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* has no meaning/effect whatsoever except for eyecandy
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* @param flags type of operation
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* @param sign_id index of the sign to be renamed/removed
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* @param text the new name or an empty string when resetting to the default
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* @return the cost of this operation or an error
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*/
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CommandCost CmdRenameSign(DoCommandFlag flags, SignID sign_id, const std::string &text)
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{
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Sign *si = Sign::GetIfValid(sign_id);
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if (si == nullptr) return CMD_ERROR;
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if (!CompanyCanRenameSign(si)) return CMD_ERROR;
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/* Rename the signs when empty, otherwise remove it */
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if (!text.empty()) {
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if (Utf8StringLength(text) >= MAX_LENGTH_SIGN_NAME_CHARS) return CMD_ERROR;
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if (flags & DC_EXEC) {
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/* Assign the new one */
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si->name = text;
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if (_game_mode != GM_EDITOR) si->owner = _current_company;
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si->UpdateVirtCoord();
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InvalidateWindowData(WC_SIGN_LIST, 0, 1);
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}
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} else { // Delete sign
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if (flags & DC_EXEC) {
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si->sign.MarkDirty();
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if (si->sign.kdtree_valid) _viewport_sign_kdtree.Remove(ViewportSignKdtreeItem::MakeSign(si->index));
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delete si;
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InvalidateWindowData(WC_SIGN_LIST, 0, 0);
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}
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}
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return CommandCost();
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}
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/**
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* Callback function that is called after a sign is placed
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* @param result of the operation
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* @param new_sign ID of the placed sign.
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*/
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void CcPlaceSign(Commands, const CommandCost &result, SignID new_sign)
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{
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if (result.Failed()) return;
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ShowRenameSignWindow(Sign::Get(new_sign));
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ResetObjectToPlace();
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}
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/**
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*
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* PlaceProc function, called when someone pressed the button if the
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* sign-tool is selected
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* @param tile on which to place the sign
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*/
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void PlaceProc_Sign(TileIndex tile)
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{
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Command<CMD_PLACE_SIGN>::Post(STR_ERROR_CAN_T_PLACE_SIGN_HERE, CcPlaceSign, tile, {});
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}
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