mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2025-03-15 07:00:58 +00:00
Support for Steam and GOG.com base path detection for Windows.
This uses the registry unfortunately, but is fairly clean. This will check the Steam App ID first, then the Steam install path, then finally will check the GOG.com App ID.
This commit is contained in:
raynorpat
parent
447d11b1ee
commit
90a20aec42
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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