src/signs.cpp

   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
   8 /** @file signs.cpp Handling of signs. */
   9
  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 "strings_func.h"
  16 #include "core/pool_func.hpp"
  17 #include "viewport_kdtree.h"
  18
  19 #include "table/strings.h"
  20
  21 #include "safeguards.h"
  22
  23 /** Initialize the sign-pool */
  24 SignPool _sign_pool("Sign");
  25 INSTANTIATE_POOL_METHODS(Sign)
  26
  27 /**
  28  * Creates a new sign
  29  */
  30 Sign::Sign(Owner owner)
  31 {
  32         this->owner = owner;
  33 }
  34
  35 /** Destroy the sign */
  36 Sign::~Sign()
  37 {
  38         if (CleaningPool()) return;
  39
  40         DeleteRenameSignWindow(this->index);
  41 }
  42
  43 /**
  44  * Update the coordinate of one sign
  45  */
  46 void Sign::UpdateVirtCoord()
  47 {
  48         Point pt = RemapCoords(this->x, this->y, this->z);
  49
  50         if (this->sign.kdtree_valid) _viewport_sign_kdtree.Remove(ViewportSignKdtreeItem::MakeSign(this->index));
  51
  52         SetDParam(0, this->index);
  53         this->sign.UpdatePosition(pt.x, pt.y - 6 * ZOOM_BASE, STR_WHITE_SIGN);
  54
  55         _viewport_sign_kdtree.Insert(ViewportSignKdtreeItem::MakeSign(this->index));
  56 }
  57
  58 /** Update the coordinates of all signs */
  59 void UpdateAllSignVirtCoords()
  60 {
  61         for (Sign *si : Sign::Iterate()) {
  62                 si->UpdateVirtCoord();
  63         }
  64 }
  65
  66 /**
  67  * Check if the current company can rename a given sign.
  68  * @param *si The sign in question.
  69  * @return true if the sign can be renamed, else false.
  70  */
  71 bool CompanyCanRenameSign(const Sign *si)
  72 {
  73         if (si->owner == OWNER_DEITY && _current_company != OWNER_DEITY && _game_mode != GM_EDITOR) return false;
  74         return true;
  75 }