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https://github.com/id-Software/DOOM-3-BFG.git
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Merge pull request #568 from raynorpat/steam-gog-path-win-support
Steam and GOG.com base path support for Windows
This commit is contained in:
Robert Beckebans
GitHub
commit
4c7e6ba501
2 changed files with 218 additions and 0 deletions
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@ -74,4 +74,9 @@ If you have questions concerning this license or the applicable additional terms
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#endif
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// RB end
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// raynorpat: Steam AppID and Steam App Name for figuring out Steam base path
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#define STEAMPATH_APPID "208200"
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#define STEAMPATH_NAME "DOOM 3 BFG Edition"
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// raynorpat: GOG.com Galaxy Launcher Game ID for figuring out Steam base path
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#define GOGPATH_ID "1733124578"
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@ -64,6 +64,8 @@ Win32Vars_t win32;
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static char sys_cmdline[MAX_STRING_CHARS];
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static idStr basepath;
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static sysMemoryStats_t exeLaunchMemoryStats;
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static HANDLE hProcessMutex;
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@ -543,6 +545,160 @@ const char* Sys_Cwd()
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return cwd;
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}
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/*
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==============
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WidePath2ASCI
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raynorpat: shamelessly ripped from dhwem3
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==============
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*/
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static int WidePath2ASCI( char* dst, size_t size, const WCHAR* src )
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{
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int len;
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BOOL default_char = FALSE;
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// test if we can convert lossless
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len = WideCharToMultiByte( CP_ACP, 0, src, -1, dst, size, NULL, &default_char );
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if ( default_char )
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{
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// The following lines implement a horrible hack to connect the UTF-16 WinAPI to the ASCII doom3 strings.
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// While this should work in most cases, it'll fail if the "Windows to DOS filename translation" is switched off.
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// In that case the function will return NULL.
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WCHAR w[MAX_OSPATH];
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len = GetShortPathNameW( src, w, sizeof( w ) );
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if (len == 0)
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{
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return 0;
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}
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// Since the DOS path contains no UTF-16 characters, convert it to the system's default code page
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len = WideCharToMultiByte( CP_ACP, 0, w, len, dst, size - 1, NULL, NULL );
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}
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if ( len == 0 )
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{
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return 0;
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}
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dst[len] = 0;
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// Replace backslashes by slashes
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for ( int i = 0; i < len; ++i )
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{
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if ( dst[i] == '\\' )
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{
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dst[i] = '/';
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}
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}
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// cut trailing slash
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if ( dst[len - 1] == '/' )
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{
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dst[len - 1] = 0;
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len--;
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}
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return len;
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}
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/*
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==============
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Sys_SteamBasePath
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==============
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*/
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static char steamPathBuffer[MAX_OSPATH] = { 0 };
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static const char* Sys_SteamBasePath()
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{
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#if defined(STEAMPATH_NAME) || defined(STEAMPATH_APPID)
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WCHAR wideBuffer[MAX_OSPATH] = { 0 };
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HKEY steamRegKey;
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DWORD steamRegKeyLen = MAX_OSPATH;
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// Let's try the Steam appid path first
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#ifdef STEAMPATH_APPID
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if ( !RegOpenKeyExW( HKEY_LOCAL_MACHINE, L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Steam App " STEAMPATH_APPID, 0, KEY_QUERY_VALUE, &steamRegKey ) )
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{
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if ( !RegQueryValueExW( steamRegKey, L"InstallLocation", NULL, NULL, (LPBYTE)wideBuffer, &steamRegKeyLen ) )
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{
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// Convert our path from widechar to asci
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if ( WidePath2ASCI( steamPathBuffer, steamRegKeyLen, wideBuffer ) )
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{
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if ( Sys_IsFolder( steamPathBuffer ) == FOLDER_YES )
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{
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common->Printf( "^4Using Steam app id base path '%s'\n", steamPathBuffer );
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return steamPathBuffer;
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}
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}
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}
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RegCloseKey( steamRegKey );
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}
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#endif
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// Let's try the Steam install path next (this only works if the user has the default steamlibrary set to match the install path)
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#ifdef STEAMPATH_NAME
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if ( !RegOpenKeyEx( HKEY_CURRENT_USER, "Software\\Valve\\Steam", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &steamRegKey ) )
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{
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steamRegKeyLen = MAX_OSPATH; // reset steamRegKeyLen to MAX_OSPATH from above
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if ( !RegQueryValueEx( steamRegKey, "SteamPath", NULL, NULL, (LPBYTE)wideBuffer, &steamRegKeyLen ) )
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{
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if ( !RegQueryValueEx( steamRegKey, "InstallPath", NULL, NULL, (LPBYTE)wideBuffer, &steamRegKeyLen ) )
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{
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// Convert our path from widechar to asci
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if ( WidePath2ASCI( steamPathBuffer, steamRegKeyLen, wideBuffer ) )
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{
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idStr steamInstallPath;
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steamInstallPath = steamPathBuffer;
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steamInstallPath.AppendPath( "steamapps\\common\\" STEAMPATH_NAME );
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if ( Sys_IsFolder( steamInstallPath.c_str() ) == FOLDER_YES )
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{
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common->Printf( "^4Using Steam install base path '%s'\n", steamInstallPath.c_str() );
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return steamInstallPath.c_str();
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}
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}
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}
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}
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}
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#endif
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#endif
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return steamPathBuffer;
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}
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/*
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================
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Sys_GogBasePath
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================
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*/
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static char gogPathBuffer[MAX_OSPATH] = { 0 };
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static const char* Sys_GogBasePath(void)
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{
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#ifdef GOGPATH_ID
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HKEY gogRegKey;
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DWORD gogRegKeyLen = MAX_OSPATH;
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WCHAR wideBuffer[MAX_OSPATH] = { 0 };
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// Let's try checking the GOG.com launcher game ID
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if ( !RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SOFTWARE\\GOG.com\\Games\\" GOGPATH_ID, 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &gogRegKey ) )
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{
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if ( !RegQueryValueEx( gogRegKey, "PATH", NULL, NULL, (LPBYTE)gogPathBuffer, &gogRegKeyLen ) )
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{
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// Convert our path from widechar to asci
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if (WidePath2ASCI( gogPathBuffer, gogRegKeyLen, wideBuffer ) )
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{
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common->Printf( "^4Using GOG.com Game ID base path '%s'\n", gogPathBuffer );
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return gogPathBuffer;
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}
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}
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RegCloseKey(gogRegKey);
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}
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#endif
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return gogPathBuffer;
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}
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/*
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==============
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Sys_DefaultBasePath
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@ -550,6 +706,61 @@ Sys_DefaultBasePath
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*/
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const char* Sys_DefaultBasePath()
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{
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idStr testbase;
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// Try the exe path first
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basepath = Sys_EXEPath();
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if ( basepath.Length() )
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{
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basepath.StripFilename();
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testbase = basepath;
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testbase += "/";
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testbase += BASE_GAMEDIR;
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if ( Sys_IsFolder( testbase.c_str() ) == FOLDER_YES )
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{
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return basepath.c_str();
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}
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else
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{
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common->Printf( "no '%s' directory in exe path %s, skipping\n", BASE_GAMEDIR, basepath.c_str() );
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}
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}
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// Try the Steam path next
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basepath = Sys_SteamBasePath();
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if ( basepath.Length() )
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{
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testbase = basepath;
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testbase += "/";
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testbase += BASE_GAMEDIR;
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if ( Sys_IsFolder( testbase.c_str() ) == FOLDER_YES )
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{
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return basepath.c_str();
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}
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else
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{
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common->Printf( "no '%s' directory in Steam path %s, skipping\n", BASE_GAMEDIR, basepath.c_str() );
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}
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}
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// Try the GOG.com path next
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basepath = Sys_GogBasePath();
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if ( basepath.Length() )
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{
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testbase = basepath;
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testbase += "/";
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testbase += BASE_GAMEDIR;
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if ( Sys_IsFolder( testbase.c_str() ) == FOLDER_YES )
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{
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return basepath.c_str();
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}
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else
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{
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common->Printf( "no '%s' directory in GOG.com path %s, skipping\n", BASE_GAMEDIR, basepath.c_str() );
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}
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}
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// Finally, try the current working directory as a fallback
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return Sys_Cwd();
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}
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@ -1442,6 +1653,8 @@ Sys_Shutdown
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*/
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void Sys_Shutdown()
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{
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basepath.Clear();
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CoUninitialize();
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}
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