Added support for multiple clients to be ran at the same time.

ptlinux/runtime.py

@@ -277,6 +277,16 @@ def prepare_game_runtime(
 	return results
 
 
+def game_runtime_ready(paths: AppPaths, selection: RuntimeSelection) -> bool:
+	"""Return whether another client may reuse the prepared runtime read-only."""
+
+	if selection.kind == "umu":
+		return native_d3d_ready(paths.umu_prefix)
+	if selection.kind in {"proton7", "proton7-container"}:
+		return _game_runtime_ready(paths, selection)
+	return False
+
+
 def run_game(
 	paths: AppPaths,
 	settings: Settings,