Multiplayer: Implement message passing system

godot_ship/script/network/Net.gd

@@ -3,36 +3,72 @@ extends Node
 const DEFAULT_PORT = 35879
 const LOCALHOST = "127.0.0.1"
 
+signal incoming
+
+class Mail:
+	var from
+	var message
+	var type
+	func _init(f, m, t):
+		from = f; message = m; type = t
+	enum {REPLY, REQUEST}
+
 # Store peer info in a dictionary, by player ID
 var peer_info = {}
 # Store this player's hostname
 var local_info = {"hostname": ""}
 
 var connected = false
+var hosting = false
+
+# FIFO queue of Mails
+var inbox = []
 
 # Network -- handles server and client setup, and facilitates communication between the two
+#   receive: Called when an incoming message is received
+#     item: The message received from the sender
+remote func receive(mail:Mail):
+	# Get the sender's ID and force letter to be properly addressed
+	mail.from = get_tree().get_rpc_sender_id()
+	print_debug(mail.from, mail.message, mail.type)
+	# Sent it off to anything that expects mail
+	emit_signal("incoming", mail)
+
+func send(id, mail:Mail):
+	# Make the recipient receive the mail
+	rpc_id(id, "receive", mail)
+
 #   start_server: Host the game
 #     port: TCP port
 #     max_players: Largest number of players allowed to connect at a time
-func start_server(port = DEFAULT_PORT, max_players = 2):
+func start_host(port = DEFAULT_PORT, max_players = 2):
 	get_hostname()
 	peer_info[1] = local_info
 	var peer = NetworkedMultiplayerENet.new()
 	peer.create_server(port, max_players)
 	get_tree().network_peer = peer
 	connected = true
+	hosting = true
 	return
 
-func connect_server(ip = LOCALHOST, port = DEFAULT_PORT):
+#   connect_server: Connect to a host
+func connect_host(ip = LOCALHOST, port = DEFAULT_PORT):
 	get_hostname()
 	var peer = NetworkedMultiplayerENet.new()
 	peer.create_client(ip, port)
 	get_tree().network_peer = peer
-	return
 
-func disconnect_server():
-	get_tree().network_peer = null
+func disconnect_host():
+	# Set state to disconnected
 	connected = false
+	hosting = false
+	# Attempt disconnection
+	if get_tree().network_peer:
+		get_tree().network_peer.close_connection()
+	# Disconnect
+	get_tree().network_peer = null
+	# Clear peer info
+	peer_info = {}
 
 func get_hostname():
 	if local_info["hostname"] == "":
@@ -50,11 +86,12 @@ func get_ip():
 
 func _ready():
 	var _trash 
-	_trash = get_tree().connect("network_peer_connected", self, "_peer_connected")
+	_trash = get_tree().connect("network_peer_connected",    self, "_peer_connected"   )
 	_trash = get_tree().connect("network_peer_disconnected", self, "_peer_disconnected")
-	_trash = get_tree().connect("connected_to_server", self, "_server_connected")
-	_trash = get_tree().connect("connection_failed", self, "_connection_fail")
-	_trash = get_tree().connect("server_disconnected", self, "_server_disconnected")
+	_trash = get_tree().connect("connected_to_server",       self, "_host_connected"   )
+	_trash = get_tree().connect("server_disconnected",       self, "_host_disconnected")
+	_trash = get_tree().connect("connection_failed",         self, "_connection_fail"  )
+
 
 func _peer_connected(id):
 	rpc_id(id, "register_peer", local_info)
@@ -64,20 +101,21 @@ func _peer_disconnected(id):
 	peer_info.erase(id)
 	pass
 
-func _server_connected():
+
+func _host_connected():
 	# On connection to the server, you get a global network id
 	# Save your info at this id
 	peer_info[get_network_id()] = local_info
+	# Set state to connected
 	connected = true
-	pass
 
-func _server_disconnected():
-	connected = false
-	pass
+func _host_disconnected():
+	# Ensure host is disconnected
+	disconnect_host()
 
 func _connection_fail():
-	connected = false
-	pass
+	# Ensure Net state is clear
+	disconnect_host()
 
 remote func register_peer(info):
 	# Save player information under the sender id's peer info