src/video/null_v.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file null_v.cpp The videio driver that doesn't blit. */
  11
  12 #include "../stdafx.h"
  13 #include "../debug.h"
  14 #include "../gfx_func.h"
  15 #include "../blitter/blitter.h"
  16 #include "null_v.h"
  17
  18 /** Factory for the null video driver. */
  19 static VideoDriverFactory <VideoDriver_Null>
  20                 iFVideoDriver_Null (0, "null", "Null Video Driver");
  21
  22 const char *VideoDriver_Null::Start(const char * const *parm)
  23 {
  24 #ifdef _MSC_VER
  25         /* Disable the MSVC assertion message box. */
  26         _set_error_mode(_OUT_TO_STDERR);
  27 #endif
  28
  29         this->ticks = GetDriverParamInt(parm, "ticks", 1000);
  30
  31         /* Do not render, nor blit */
  32         DEBUG(misc, 1, "Forcing blitter 'null'...");
  33         const Blitter::Info *blitter = Blitter::find ("null");
  34         /* The null blitter should always be available. */
  35         assert (blitter != NULL);
  36         Blitter::select (blitter);
  37         _screen_surface.reset (blitter->create (NULL, _cur_resolution.width,
  38                                 _cur_resolution.height, _cur_resolution.width,
  39                                 true));
  40         _screen_width  = _cur_resolution.width;
  41         _screen_height = _cur_resolution.height;
  42         ScreenSizeChanged();
  43
  44         return NULL;
  45 }
  46
  47 void VideoDriver_Null::Stop() { }
  48
  49 void VideoDriver_Null::MainLoop()
  50 {
  51         uint i;
  52
  53         for (i = 0; i < this->ticks; i++) {
  54                 GameLoop();
  55                 UpdateWindows();
  56         }
  57 }