vgui_support: initial vgui2 support

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "vgui-dev"]
 	path = vgui-dev
 	url = https://github.com/FWGS/vgui-dev
+[submodule "vgui2-dev"]
+	path = vgui2-dev
+	url = https://github.com/kungfulon/vgui2-dev.git

vgui2_gameui.cpp

@@ -0,0 +1,76 @@
+/*
+vgui2_gameui.cpp - implement IGameUIFuncs for vgui2 support
+Copyright (C) 2022 FWGS
+
+This program 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, either version 3 of the License, or
+(at your option) any later version.
+
+This program 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.
+
+In addition, as a special exception, the author gives permission
+to link the code of this program with VGUI library developed by
+Valve, L.L.C ("Valve"). You must obey the GNU General Public License
+in all respects for all of the code used other than VGUI library.
+If you modify this file, you may extend this exception to your
+version of the file, but you are not obligated to do so. If
+you do not wish to do so, delete this exception statement
+from your version.
+
+*/
+
+#include "vgui2_gameui.h"
+#include <vgui_api.h>
+
+namespace vgui_support
+{
+extern vguiapi_t *g_api;
+};
+
+bool GameUIFuncs::IsKeyDown( const char *keyname, bool &isdown )
+{
+	isdown = false;
+	return false;
+}
+
+const char *GameUIFuncs::Key_NameForKey( int keynum )
+{
+	return "";
+}
+
+const char *GameUIFuncs::Key_BindingForKey( int keynum )
+{
+	return "";
+}
+
+vgui2::KeyCode GameUIFuncs::GetVGUI2KeyCodeForBind( const char *bind )
+{
+	return vgui2::KEY_TAB;
+	// return ( vgui2::KeyCode )( vgui_support::g_api->KeyForBind( bind ) + 1 );
+}
+
+void GameUIFuncs::GetVideoModes( vmode_t **liststart, int *count )
+{
+}
+
+void GameUIFuncs::GetCurrentVideoMode( int *wide, int *tall, int *bpp )
+{
+}
+
+void GameUIFuncs::GetCurrentRenderer( char *name, int namelen, int *windowed, int *hdmodels, int *addons_folder, int *vid_level )
+{
+}
+
+bool GameUIFuncs::IsConnectedToVACSecureServer()
+{
+	return false;
+}
+
+int GameUIFuncs::Key_KeyStringToKeyNum( const char *pchKey )
+{
+	return 0;
+}

vgui2_gameui.h

@@ -0,0 +1,45 @@
+/*
+vgui2_gameui.h - vgui2 GameUIFuncs header
+Copyright (C) 2022 FWGS
+
+This program 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, either version 3 of the License, or
+(at your option) any later version.
+
+This program 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.
+
+In addition, as a special exception, the author gives permission
+to link the code of this program with VGUI library developed by
+Valve, L.L.C ("Valve"). You must obey the GNU General Public License
+in all respects for all of the code used other than VGUI library.
+If you modify this file, you may extend this exception to your
+version of the file, but you are not obligated to do so. If
+you do not wish to do so, delete this exception statement
+from your version.
+
+*/
+
+#ifndef VGUI2_GAMEUI_H
+#define VGUI2_GAMEUI_H
+
+#include <IGameUIFuncs.h>
+
+class GameUIFuncs : public IGameUIFuncs
+{
+public:
+	virtual bool IsKeyDown( const char *keyname, bool &isdown );
+	virtual const char *Key_NameForKey( int keynum );
+	virtual const char *Key_BindingForKey( int keynum );
+	virtual vgui2::KeyCode GetVGUI2KeyCodeForBind( const char *bind );
+	virtual void GetVideoModes( vmode_t **liststart, int *count );
+	virtual void GetCurrentVideoMode( int *wide, int *tall, int *bpp );
+	virtual void GetCurrentRenderer( char *name, int namelen, int *windowed, int *hdmodels, int *addons_folder, int *vid_level );
+	virtual bool IsConnectedToVACSecureServer();
+	virtual int Key_KeyStringToKeyNum( const char *pchKey );
+};
+
+#endif // VGUI2_GAMEUI_H