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project.godot

@@ -65,3 +65,7 @@ gdscript/warnings/confusable_capture_reassignment=2
 gdscript/warnings/property_used_as_function=2
 gdscript/warnings/constant_used_as_function=2
 gdscript/warnings/function_used_as_property=2
+
+[editor]
+
+run/main_run_args="--client"

scripts/utils/game.gd

@@ -23,5 +23,7 @@ func _ready() -> void:
 						Log.error("Failed to start server! Closing application.", "Failed to start server!")
 				"--client":
 					Networking.join_room()
+				"res://start.tscn":
+					pass # Catch in order to prevent a warning.
 				_:
 					Log.warning("Unknown argument: %s!" % args[i])

scripts/utils/networking.gd

@@ -10,6 +10,8 @@ func _ready() -> void:
 		Log.error("FAILED to connect the connection_failed signal to _on_connected_fail!", "Internal Error: Failed to connect signal.")
 	if multiplayer.server_disconnected.connect(close_network) != OK:
 		Log.error("FAILED to connect the server_disconnected signal to _on_server_disconnected!", "Internal Error: Failed to connect signal.")
+	if multiplayer.peer_disconnected.connect(_on_peer_disconnected) != OK:
+		Log.error("FAILED to connect the peer_disconnected signal to _on_peer_disconnected!", "Internal Error: Failed to connect signal.")
 
 # Start the network listener.
 func start_server() -> Error:
@@ -50,6 +52,36 @@ func _on_connected_ok() -> void:
 	if rpc_id(1, "send_roomname", Game.room_name) != OK:
 		Log.warning("Failed to send roomname!")
 
+func _on_peer_disconnected(id: int) -> void:
+	mutex.lock()
+	if multiplayer.get_unique_id() == 1:
+		if rooms.has(id):
+			var roomname: String = rooms[id]
+			if !rooms.erase(roomname):
+				Log.warning("The room %s associated with %d doesn't exist in rooms, even though it should!" % [roomname, id])
+			if !rooms.erase(id):
+				Log.warning("The peer %d doesn't exist in rooms, even though it should!" % id)
+			for peer: int in peers[roomname]:
+				if peer == id:
+					continue
+				if rpc_id(peer, "host_disconnected_message"):
+					Log.warning("Peer %d couldn't be disconnected!" % peer)
+			if !peers.erase(roomname):
+				Log.warning("Room %s couldn't be found, even though it should exist!" % roomname)
+			Log.info("Room %s terminated." % roomname)
+		else:
+			for room: String in peers:
+				for peer: int in peers[room]:
+					if peer == id:
+						var peer_array: Array = peers[room]
+						peer_array.erase(id)
+						peers[room] = peer_array
+						for found_peer: int in peers[room]:
+							if rpc_id(found_peer, "peer_disconnected_message") != OK:
+								Log.warning("Failed to send disconnect message to %d!" % found_peer)
+	mutex.unlock()
+
+# The following function sends the roomname selected by the client.
 @rpc("any_peer", "call_remote", "reliable")
 func send_roomname(roomname: String) -> void:
 	mutex.lock()
@@ -59,12 +91,39 @@ func send_roomname(roomname: String) -> void:
 			rooms[multiplayer.get_remote_sender_id()] = roomname
 			peers[roomname] = [multiplayer.get_remote_sender_id()]
 			Log.info("Room %s registered." % roomname)
+			if rpc_id(multiplayer.get_remote_sender_id(), "server_response", 0) != OK:
+				Log.warning("Failed to send elevation reply to %d!")
 		elif peers[roomname] is Array:
 			# For some odd reason, Godot doesn't allow casting peers[roomname] to an Array, but this works?
 			var peer_array: Array = peers[roomname]
 			peer_array.append(multiplayer.get_remote_sender_id())
 			peers[roomname] = peer_array
+			if rpc_id(multiplayer.get_remote_sender_id(), "server_response", 1) != OK:
+				Log.warning("Failed to send join reply to %d!")
 			Log.debug("Room %s joined by peer %d." % [roomname, multiplayer.get_remote_sender_id()])
 	else:
 		Log.warning("Peer %d tried to send this client a request meant for the authority!" % multiplayer.get_remote_sender_id())
+		if rpc_id(multiplayer.get_remote_sender_id(), "server_response", 2) != OK:
+				Log.warning("Failed to send fail reply to %d!")
 	mutex.unlock()
+
+# This is the message sent out if the host of the room has left.
+@rpc("authority", "call_remote", "reliable")
+func host_disconnected_message() -> void:
+	pass # TODO: Implement this
+
+# This is the message sent out if a peer in the room has left.
+@rpc("authority", "call_remote", "reliable")
+func peer_disconnected_message() -> void:
+	pass # TODO: Implement this
+
+# This is the initial server response, which tells the client what its role is.
+@rpc("authority", "call_remote", "reliable")
+func server_response(status: int) -> void:
+	match status:
+		0:
+			pass # TODO: makes new room manager
+		1:
+			pass # TODO: makes new room member
+		2:
+			pass # TODO: server error