fix(network): isolate auth sessions for multiple instances on same pc

codegen/README.md

@@ -18,4 +18,3 @@ The generated code is designed to be supported Godot Engine `3.1+`.
 ### Limitations
 
 The code generator has __only__ been checked against the Swagger specification generated for Nakama server. YMMV.
-

scripts/managers/auth_manager.gd

@@ -21,13 +21,19 @@ var is_guest: bool = false
 var auth_mode: AuthMode = AuthMode.GUEST
 
 # Session persistence
-const SESSION_FILE := "user://auth_session.dat"
+var SESSION_FILE := "user://auth_session.dat"
-const CREDENTIALS_FILE := "user://auth_credentials.dat"
+var CREDENTIALS_FILE := "user://auth_credentials.dat"
 
 # Encryption key for session storage (device-specific)
 var ENCRYPTION_KEY: String = OS.get_unique_id().sha256_text()
 
 func _ready() -> void:
+	# In debug mode, suffix session files with the process ID to allow multiple instances
+	if OS.is_debug_build():
+		var suffix = "_" + str(OS.get_process_id())
+		SESSION_FILE = "user://auth_session%s.dat" % suffix
+		CREDENTIALS_FILE = "user://auth_credentials%s.dat" % suffix
+		
 	# Try to restore session on startup
 	call_deferred("_try_restore_session")
 
@@ -155,6 +161,9 @@ func login_as_guest() -> bool:
 func _get_device_id() -> String:
 	# Try to load saved device ID for consistent guest identity
 	var id_file := "user://device_id.txt"
+	if OS.is_debug_build():
+		id_file = "user://device_id_%s.txt" % str(OS.get_process_id())
+		
 	if FileAccess.file_exists(id_file):
 		var file_read := FileAccess.open(id_file, FileAccess.READ)
 		if file_read: