Split client and server

server/handler/Login.gd

@@ -0,0 +1,65 @@
+extends PacketHandler
+
+enum {
+	SUCCESS = 0,
+	FAIL = 1,
+}
+
+## Player scene instantiated for each client.
+@export var player_scene: PackedScene
+
+func _ready():
+	%Server.set_handler(Packet.LOGIN, self)
+
+func handle_packet(data: PackedByteArray, peer: PacketPeer):
+	var client = %Server.peer_to_client(peer)
+
+	if client.is_logged_in():
+		return
+
+	var data_string = data.get_string_from_utf8()
+	var login_request = JSON.parse_string(data_string)
+
+	if login_request.size() < 2:
+		login_fail(peer)
+		return
+	
+	var username = login_request[0]
+	var password = login_request[1]
+	var account = %Database.get_account(username)
+
+	if account == null || account.password != password:
+		login_fail(peer)
+		return
+
+	client.auth_token = generate_auth_token()
+	client.account = account
+	spawn_player(client)
+	login_success(peer, client.auth_token)
+
+func spawn_player(client: Client):
+	var player := player_scene.instantiate()
+	player.client = client
+	player.server = %Server
+	player.name = client.address
+	client.player = player
+	%Players.add_child(player)
+
+func generate_auth_token() -> String:
+	var crypto = Crypto.new()
+	var buffer = crypto.generate_random_bytes(32)
+	return Marshalls.raw_to_base64(buffer)
+
+func login_success(peer: PacketPeer, auth_token: String):
+	var buffer := StreamPeerBuffer.new()
+	buffer.put_8(Packet.LOGIN)
+	buffer.put_8(SUCCESS)
+	buffer.put_data(auth_token.to_ascii_buffer())
+	peer.put_packet(buffer.data_array)
+
+func login_fail(peer: PacketPeer):
+	var buffer := StreamPeerBuffer.new()
+	buffer.put_8(Packet.LOGIN)
+	buffer.put_8(FAIL)
+	peer.put_packet(buffer.data_array)
+

server/handler/Ping.gd

@@ -0,0 +1,13 @@
+extends PacketHandler
+
+func _ready():
+	%Server.set_handler(Packet.PING, self)
+
+func handle_packet(data: PackedByteArray, peer: PacketPeer):
+	var buffer := StreamPeerBuffer.new()
+	buffer.put_8(Packet.PING)
+
+	if data.size() > 0:
+		buffer.put_8(data[0])
+	
+	peer.put_packet(buffer.data_array)