Lobby: Return to Host/Connect menu when connection to server unexpectedly closes

godot_ship/script/network/Lobby.gd

@@ -1,7 +1,7 @@
 extends Control
 # Ignore discarded return values
 # warning-ignore:return_value_discarded
-onready var text = find_node("Player List")
+onready var player_list = find_node("Player List")
 onready var ip = find_node("IP Address")
 
 # TODO: Write a function to update Player List with the list of attached players
@@ -11,7 +11,7 @@ func _on_peers_updated():
 	for peer in Net.peer_info:
 		connected_peers += ("%s\n" % Net.peer_info[peer]["name"])
 		pass
-	text.text = connected_peers.rsplit("\n", true, 1)[0].c_unescape()
+	player_list.text = connected_peers.rsplit("\n", true, 1)[0].c_unescape()
 	pass
 
 func set_IP_Address_text(show):
@@ -23,6 +23,7 @@ func set_IP_Address_text(show):
 
 func _ready():
 	Net.connect("peers_updated", self, "_on_peers_updated")
+	Net.connect("disconnected",  self, "_on_Net_disconnected")
 	_on_peers_updated()
 	pass
 
@@ -47,12 +48,18 @@ func _on_Host_Button_pressed():
 #     Disconnect from (or stop hosting) a game
 #     Shows the host/connect buttons
 func _on_Disconnect_Button_pressed():
-	# Hide "Connected Options"
-	show_Connected_Options(false)
-	# Show the host IP address
-	set_IP_Address_text(false)
 	# Disconnect
 	Net.disconnect_host()
+	# Hide "Connected Options"
+	show_Connected_Options(false)
+	# Hide the host IP address
+	set_IP_Address_text(false)
+
+func _on_Net_disconnected():
+	# Hide "Connected Options"
+	show_Connected_Options(false)
+	# Hide the host IP address
+	set_IP_Address_text(false)
 
 func _on_Change_Name_Button_pressed():
 	# Show the Change Name dialogue
@@ -76,17 +83,30 @@ func _on_Connect_to_Game_confirmed():
 		# Show "Connected Options"
 		show_Connected_Options(true)
 
-func _on_Change_Name_confirmed():
-	# Get the new name
-	var name = find_node("Name Entry").text.split("\n")[0]
-	# Set it as the name
-	Net.change_name(name)
-
-
-
 func _on_Exit_Lobby_pressed():
 	# Disconnect
 	if Net.connected:
 		Net.disconnect_host()
 	# Close Lobby menu
 	queue_free()
+
+
+func _on_IP_and_Port_Entry_text_entered(text):
+	# Split it into IP and Port segments
+	var ip_port = text.split(":")
+	# If text exists and contains valid IP address
+	if ip_port.size() > 0 and ip_port[0].is_valid_ip_address():
+		# Connect to host
+		var connected = Net.callv("connect_host", ip_port)
+		if connected == OK:
+			# Show "Connected Options"
+			show_Connected_Options(true)
+			# Hide the popup
+			find_node("Connect to Game").hide()
+
+
+func _on_Name_Entry_text_entered(text):
+	# Change the name
+	Net.change_name(text)
+	# Hide the popup
+	find_node("Change Name").hide()

godot_ship/script/network/Net.gd

@@ -10,15 +10,15 @@ const LOCALHOST = "127.0.0.1"
 #   Mail types:
 #     1: REQUEST: Message is a request for information
 #     0: REPLY: Message is a reply
-enum {REPLY, REQUEST}
+enum {REPLY, REQUEST, READY, ACK}
 
 # Signals
 #   incoming(mail): Sent when there's an incoming message
 signal incoming
 #   peers_updated(): Sent when the peer list is updated
 signal peers_updated
-#
-
+#   disconnected():  Sent when unexpectedly disconnected
+signal disconnected
 # Variables
 #   inbox: Array: Message history
 var inbox = []
@@ -33,8 +33,9 @@ var local_info = {"name": ""}
 
 # Network -- handles server and client setup, and facilitates communication between the two
 #   receive: Receive a message (called by sender's `send` function)
-#     item: The message received from the sender (implicitly JSON-decoded by JSONRPC)
-sync func receive(mail):
+#     mail: The message received from the sender (implicitly JSON-decoded by JSONRPC)
+#     mail_type: Type of mail (see "Mail Types" enum above)
+remote func receive(mail):
 	# Get the sender's ID and force letter to be properly addressed
 	mail[0] = get_tree().get_rpc_sender_id()
 	# Add the mail to the inbox (so it can be read back later if necessary
@@ -45,10 +46,12 @@ sync func receive(mail):
 #   send: Send a message
 #     id: Peer ID of the recipient
 #     mail: Variant of a json-encodable type (non-Object) to send
-func send(id, mail):
+#     mail_type: Type of mail (see "Mail Types" enum above)
+func send(id, mail, mail_type = REPLY):
 	# Make the recipient receive the mail
-	rpc_id(id, "receive", to_json(mail))
+	rpc_id(id, "receive", to_json([-1, mail, mail_type]))
 
+# Host
 #   start_host: Host the game
 #     port: TCP port
 #     max_players: Largest number of players allowed to connect at a time
@@ -67,12 +70,20 @@ func start_host(port = DEFAULT_PORT, max_players = 2):
 	connected = true
 	hosting = true
 
+#   accept_guests:
+#     Select whether to accept new guests
+func accept_guests(accept:bool):
+	if hosting:
+		multiplayer.refuse_new_network_connections = not accept
+
+# Guest
 #   connect_host: Connect to a host
 func connect_host(ip = LOCALHOST, port = DEFAULT_PORT):
 	get_hostname()
 	var peer = NetworkedMultiplayerENet.new()
-	peer.create_client(ip, port)
+	var ret = peer.create_client(ip, port)
 	get_tree().network_peer = peer
+	return ret
 
 #   disconnect_host
 func disconnect_host():
@@ -99,6 +110,7 @@ func change_name(name):
 	rpc("register_peer", local_info)
 	pass
 
+# Helper Functions
 #   get_hostname: Asks the host machine to provide its hostname,
 #     and if the peer name isn't set, set it to the hostname
 func get_hostname():
@@ -125,15 +137,19 @@ func _ready():
 	_trash = get_tree().connect("server_disconnected",       self, "_host_disconnected")
 	_trash = get_tree().connect("connection_failed",         self, "_connection_fail"  )
 
-
+# Signal Handlers
 func _peer_connected(id):
 	# Send peer info to remote peer
 	rpc_id(id, "register_peer", local_info)
+	if hosting and peer_info.size() >= 2:
+		pass
 	pass
 
 func _peer_disconnected(id):
 	# Unregister the peer locally
 	unregister_peer(id)
+	if hosting and peer_info.size() < 2:
+		pass
 	pass
 
 
@@ -147,6 +163,8 @@ func _host_connected():
 func _host_disconnected():
 	# Ensure host is disconnected
 	disconnect_host()
+	# Send disconnection message to listeners
+	emit_signal("disconnected")
 
 func _connection_fail():
 	# Ensure Net state is clear