steam-frame/astromaddie--lambda1-vr
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Frame: use Half-Life from Steam where it is, read only

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The Android container on the Frame shows the headset's Steam folders at the
same paths, read only. At start the app looks for steamapps/common/Half-Life
(valve/liblist.gam) in the Steam library and in the other libraries
libraryfolders.vdf lists, and gives the engine that folder as XASH3D_RODIR.
The engine searches it after the writable folder, so the saves, the
settings and the files this app puts in /sdcard/Documents/Lambda1VR (the
replacement models and sprites) win over Steam's. Nothing is written into the
Steam folder. If there's no Half-Life there, a copy in Documents is used as
before, and a [data] line in the log says which one it was.

Builds. Haven't tried it on the headset yet.
This commit is contained in:
Madison committed 2026-10-04 23:38:22 +09:00
1 parent 571fed0ef5
commit a4f12f84fd
2 files changed
+78 -7
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java/com/drbeef/lambda1vr/GLES3JNIActivity.java
+63
View File
@@ -151,6 +151,53 @@ import static android.system.Os.setenv;
System.exit(0);
}
/**
* The Frame's Android container shows the headset's Steam folders at the same paths, read only. If
* Half-Life is installed there, the game's files can be used from where they are instead of a copy.
* Looks in the Steam library folders (the main one, and the others libraryfolders.vdf lists, such as
* one on an SD card) for steamapps/common/Half-Life/valve/liblist.gam. Returns the Half-Life folder or null.
*/
private String findSteamHalfLife()
{
final String steam = "/home/steamos/.local/share/Steam";
java.util.ArrayList<String> libraries = new java.util.ArrayList<String>();
libraries.add(steam);
try
{
BufferedReader br = new BufferedReader(new FileReader(steam + "/steamapps/libraryfolders.vdf"));
String line;
while ((line = br.readLine()) != null)
{
// "path" "/some/library"
line = line.trim();
if (line.startsWith("\"path\""))
{
String[] parts = line.split("\"");
if (parts.length >= 4 && !libraries.contains(parts[3]))
{
libraries.add(parts[3]);
}
}
}
br.close();
} catch (IOException e)
{
Log.i(TAG, "[data] no libraryfolders.vdf: " + e.getMessage());
}
for (String library : libraries)
{
File liblist = new File(library + "/steamapps/common/Half-Life/valve/liblist.gam");
if (liblist.canRead())
{
return library + "/steamapps/common/Half-Life";
}
Log.i(TAG, "[data] no Half-Life in the Steam library " + library);
}
return null;
}
public void create()
{
copy_asset(getFilesDir().getPath(), "extras.pak", false);
@@ -509,6 +556,22 @@ import static android.system.Os.setenv;
try {
ApplicationInfo info = getApplicationInfo();
setenv("XASH3D_BASEDIR", DATA_DIR, true);
if (BuildConfig.STEAM_FRAME)
{
// Half-Life from Steam, read only, in place. The folder above is searched after it, so what's
// in there (the saves, the settings, this app's own models and sprites) wins over Steam's files.
String steamHalfLife = findSteamHalfLife();
if (steamHalfLife != null)
{
setenv("XASH3D_RODIR", steamHalfLife, true);
Log.i(TAG, "[data] game files: Steam, in place, read only (" + steamHalfLife + "); saves and settings in " + DATA_DIR);
}
else
{
Log.i(TAG, "[data] game files: no Steam install of Half-Life found, using the copy in " + DATA_DIR);
}
}
setenv("XASH3D_GAMELIBDIR", info.nativeLibraryDir, true);
setenv("XASH3D_GAMEDIR", "valve", true);
setenv( "XASH3D_EXTRAS_PAK1", getFilesDir().getPath() + "/extras.pak", true );