/* $Id$ */ /* * This file is part of OpenTTD. * 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. * 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. * 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/>. */ /** @file signs_cmd.cpp Handling of sign related commands. */ #include "stdafx.h" #include "landscape.h" #include "company_func.h" #include "signs_base.h" #include "signs_func.h" #include "command_func.h" #include "tilehighlight_func.h" #include "window_func.h" #include "string_func.h" #include "table/strings.h" SignID _new_sign_id; /** * 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 * @param text unused * @return the cost of this operation or an error */ CommandCost CmdPlaceSign(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text) { /* Try to locate a new sign */ if (!Sign::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_SIGNS); /* Check sign text length if any */ if (!StrEmpty(text) && strlen(text) >= MAX_LENGTH_SIGN_NAME_BYTES) return CMD_ERROR; /* When we execute, really make the sign */ if (flags & DC_EXEC) { Sign *si = new Sign(_current_company); int x = TileX(tile) * TILE_SIZE; int y = TileY(tile) * TILE_SIZE; si->x = x; si->y = y; si->z = GetSlopeZ(x, y); if (!StrEmpty(text)) { si->name = strdup(text); } si->UpdateVirtCoord(); InvalidateWindowData(WC_SIGN_LIST, 0, 0); _new_sign_id = si->index; } 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 * @param text the new name or an empty string when resetting to the default * @return the cost of this operation or an error */ CommandCost CmdRenameSign(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text) { Sign *si = Sign::GetIfValid(p1); if (si == NULL) return CMD_ERROR; /* Rename the signs when empty, otherwise remove it */ if (!StrEmpty(text)) { if (strlen(text) >= MAX_LENGTH_SIGN_NAME_BYTES) return CMD_ERROR; if (flags & DC_EXEC) { /* Delete the old name */ free(si->name); /* Assign the new one */ si->name = strdup(text); si->owner = _current_company; si->UpdateVirtCoord(); InvalidateWindowData(WC_SIGN_LIST, 0, 1); } } else { // Delete sign if (flags & DC_EXEC) { si->sign.MarkDirty(); delete si; InvalidateWindowData(WC_SIGN_LIST, 0, 0); } } return CommandCost(); } /** * Callback function that is called after a sign is placed * @param result of the operation * @param tile unused * @param p1 unused * @param p2 unused */ void CcPlaceSign(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2) { if (result.Failed()) return; ShowRenameSignWindow(Sign::Get(_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, CMD_PLACE_SIGN | CMD_MSG(STR_ERROR_CAN_T_PLACE_SIGN_HERE), CcPlaceSign); }