mirror of https://github.com/OpenTTD/OpenTTD.git
69 lines
2.1 KiB
C++
69 lines
2.1 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 null_v.cpp The video driver that doesn't blit. */
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#include "../stdafx.h"
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#include "../gfx_func.h"
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#include "../blitter/factory.hpp"
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#include "../saveload/saveload.h"
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#include "../window_func.h"
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#include "null_v.h"
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#include "../safeguards.h"
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/** Factory for the null video driver. */
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static FVideoDriver_Null iFVideoDriver_Null;
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std::optional<std::string_view> VideoDriver_Null::Start(const StringList &parm)
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{
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#ifdef _MSC_VER
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/* Disable the MSVC assertion message box. */
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_set_error_mode(_OUT_TO_STDERR);
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_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
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_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
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#endif
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this->UpdateAutoResolution();
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this->ticks = GetDriverParamInt(parm, "ticks", 1000);
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_screen.width = _screen.pitch = _cur_resolution.width;
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_screen.height = _cur_resolution.height;
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_screen.dst_ptr = nullptr;
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ScreenSizeChanged();
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/* Do not render, nor blit */
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Debug(misc, 1, "Forcing blitter 'null'...");
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BlitterFactory::SelectBlitter("null");
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return std::nullopt;
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}
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void VideoDriver_Null::Stop() { }
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void VideoDriver_Null::MakeDirty(int, int, int, int) {}
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void VideoDriver_Null::MainLoop()
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{
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uint i;
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for (i = 0; i < this->ticks; i++) {
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::GameLoop();
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::InputLoop();
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::UpdateWindows();
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}
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/* If requested, make a save just before exit. The normal exit-flow is
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* not triggered from this driver, so we have to do this manually. */
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if (_settings_client.gui.autosave_on_exit) {
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DoExitSave();
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}
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}
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bool VideoDriver_Null::ChangeResolution(int, int) { return false; }
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bool VideoDriver_Null::ToggleFullscreen(bool) { return false; }
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