src/video/null_v.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 null_v.cpp The videio driver that doesn't blit. */
   9
  10 #include "../stdafx.h"
  11 #include "../gfx_func.h"
  12 #include "../blitter/factory.hpp"
  13 #include "null_v.h"
  14
  15 #include "../safeguards.h"
  16
  17 /** Factory for the null video driver. */
  18 static FVideoDriver_Null iFVideoDriver_Null;
  19
  20 const char *VideoDriver_Null::Start(const char * const *parm)
  21 {
  22 #ifdef _MSC_VER
  23         /* Disable the MSVC assertion message box. */
  24         _set_error_mode(_OUT_TO_STDERR);
  25 #endif
  26
  27         this->ticks = GetDriverParamInt(parm, "ticks", 1000);
  28         _screen.width  = _screen.pitch = _cur_resolution.width;
  29         _screen.height = _cur_resolution.height;
  30         _screen.dst_ptr = nullptr;
  31         ScreenSizeChanged();
  32
  33         /* Do not render, nor blit */
  34         DEBUG(misc, 1, "Forcing blitter 'null'...");
  35         BlitterFactory::SelectBlitter("null");
  36         return nullptr;
  37 }
  38
  39 void VideoDriver_Null::Stop() { }
  40
  41 void VideoDriver_Null::MakeDirty(int left, int top, int width, int height) {}
  42
  43 void VideoDriver_Null::MainLoop()
  44 {
  45         uint i;
  46
  47         for (i = 0; i < this->ticks; i++) {
  48                 GameLoop();
  49                 UpdateWindows();
  50         }
  51 }
  52
  53 bool VideoDriver_Null::ChangeResolution(int w, int h) { return false; }
  54
  55 bool VideoDriver_Null::ToggleFullscreen(bool fs) { return false; }