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1 | 1 | extends Node |
2 | 2 |
|
| 3 | +var controlled_peers: Dictionary = {} |
| 4 | + |
| 5 | +var local_ping: int = 0 |
| 6 | +var ping_delay_secs: int = 5 |
| 7 | +var ping_timer: Timer |
| 8 | +var timeout_peer_secs: int = 5 |
3 | 9 |
|
4 | 10 | # Called when the node enters the scene tree for the first time. |
5 | 11 | func _ready() -> void: |
6 | | - init_network("localhost:9092") |
7 | | - pass |
| 12 | + var host: String |
| 13 | + # if OS.has_feature("dedicated_server"): |
| 14 | + host = "localhost:19092" # Kafka Server |
| 15 | + # else: |
| 16 | + # host = "ws://localhost:3000/ws" # Websocket Client |
| 17 | + init_network(host) |
8 | 18 |
|
9 | 19 | func init_network(host: String) -> MultiplayerPeer: |
10 | | - var socket: MultiplayerPeer; |
11 | | - #if OS.has_feature("dedicated_server"): |
| 20 | + var socket: MultiplayerPeer |
| 21 | + # if OS.has_feature("dedicated_server"): |
12 | 22 | print("Connecting to Kafka Broker: ", host) |
13 | | - var kafka: KafkaMultiplayerPeer = KafkaMultiplayerPeer.new(); |
14 | | - kafka.register_admin_channel(host, "super") |
15 | | - kafka.register_publisher("server-to-client", host, 1); |
16 | | - kafka.register_subscriber(["client-to-server"], host, "group-name", 1); |
17 | | - socket = kafka; |
18 | | - #else: |
19 | | - #print("Connecting to a Websocket URL: ", host) |
20 | | - #var websocket: WebSocketMultiplayerPeer = WebSocketMultiplayerPeer.new(); |
21 | | - #websocket.create_client(host) |
22 | | - #socket = websocket; |
23 | | - # |
| 23 | + var kafka: KafkaMultiplayerPeer = KafkaMultiplayerPeer.new() |
| 24 | + kafka.kafka_log.connect(_on_kafka_logs) |
| 25 | + # Setup Internal Channels... |
| 26 | + # These channels do not communicate from client to server, instead this communicates between server to only edge internally. |
| 27 | + # This allows the edge server to tell the game servers that a client has connected or disconnected. |
| 28 | + var internal_producer_metadata: KafkaPublisherMetadata = KafkaPublisherMetadata.new() |
| 29 | + internal_producer_metadata.set_brokers(host) |
| 30 | + internal_producer_metadata.set_topic("internal_to_edge") |
| 31 | + kafka.register_internal_publisher(internal_producer_metadata) |
| 32 | + |
| 33 | + var internal_consumer_metadata: KafkaSubscriberMetadata = KafkaSubscriberMetadata.new() |
| 34 | + internal_consumer_metadata.set_brokers(host) |
| 35 | + internal_consumer_metadata.set_topics(["internal_to_game"]) |
| 36 | + internal_consumer_metadata.set_group_id("group-name") |
| 37 | + internal_consumer_metadata.set_offset_reset(KafkaSubscriberMetadata.OffsetReset.EARLIEST) |
| 38 | + kafka.register_internal_subscriber(internal_consumer_metadata) |
| 39 | + |
| 40 | + # Setup Producer |
| 41 | + # This communicates directly to the clients via kafka topics. |
| 42 | + var producer_metadata: KafkaPublisherMetadata = KafkaPublisherMetadata.new() |
| 43 | + producer_metadata.set_brokers(host) |
| 44 | + producer_metadata.set_topic("server-to-client") |
| 45 | + kafka.register_publisher(producer_metadata, 1) |
| 46 | + |
| 47 | + # Setup Consumer |
| 48 | + # This listens from the clients via the kafka topics. |
| 49 | + var consumer_metadata: KafkaSubscriberMetadata = KafkaSubscriberMetadata.new() |
| 50 | + consumer_metadata.set_brokers(host) |
| 51 | + consumer_metadata.set_topics(["client-to-server"]) |
| 52 | + consumer_metadata.set_group_id("group-name") |
| 53 | + consumer_metadata.set_offset_reset(KafkaSubscriberMetadata.OffsetReset.EARLIEST) |
| 54 | + kafka.register_subscriber(consumer_metadata, 1) |
| 55 | + |
| 56 | + kafka.peer_connected.connect(_server_on_connection) |
| 57 | + kafka.peer_disconnected.connect(_server_on_disconnection) |
| 58 | + |
| 59 | + socket = kafka |
| 60 | + |
| 61 | + # Initialize the ping timer for the server. |
| 62 | + ping_timer = Timer.new() |
| 63 | + ping_timer.timeout.connect(_on_ping_caller) |
| 64 | + ping_timer.wait_time = ping_delay_secs |
| 65 | + add_child(ping_timer) |
| 66 | + ping_timer.start() |
| 67 | + # else: |
| 68 | + # print("Connecting to a Websocket URL: ", host) |
| 69 | + # var websocket: WebSocketMultiplayerPeer = WebSocketMultiplayerPeer.new() |
| 70 | + # websocket.create_client(host) |
| 71 | + # websocket.peer_connected.connect(_on_connected) |
| 72 | + # socket = websocket |
| 73 | + |
24 | 74 | # Set the Multiplayer API to be pointed on the peer above. |
25 | 75 | # At this point, the peer should be polling data. |
26 | | - multiplayer.multiplayer_peer = socket; |
27 | | - return socket; |
| 76 | + multiplayer.multiplayer_peer = socket |
| 77 | + |
| 78 | + return socket |
| 79 | + |
| 80 | +func _on_kafka_logs(log_severity: int, message: String) -> void: |
| 81 | + print("[KAFKA::%s] %s" % [str(log_severity), message]) |
| 82 | + |
| 83 | +func _on_ping_caller() -> void: |
| 84 | + print("[SERVER] Pinging all clients...") |
| 85 | + |
| 86 | + # Check timeouts for peers. |
| 87 | + for controlled_peer in controlled_peers.keys(): |
| 88 | + var last_ping_timestamp = controlled_peers[controlled_peer] |
| 89 | + var now: float = Time.get_unix_time_from_system() |
| 90 | + if now > last_ping_timestamp + ping_delay_secs + timeout_peer_secs: |
| 91 | + multiplayer.multiplayer_peer.disconnect_peer(controlled_peer, true) |
| 92 | + |
| 93 | + ping_all() |
| 94 | + |
| 95 | +func _server_on_connection(source: int) -> void: |
| 96 | + print("[SERVER] Client connected: ", source); |
| 97 | + |
| 98 | +func _server_on_disconnection(source: int) -> void: |
| 99 | + print("[SERVER] Client disconnected: ", source) |
| 100 | + |
| 101 | +func _on_connected(): |
| 102 | + print("connected...") |
| 103 | + login.rpc("Hello", "World") |
| 104 | + |
| 105 | +@rpc("authority") |
| 106 | +func login_callback(success: bool) -> void: |
| 107 | + if multiplayer.is_server(): |
| 108 | + printerr("Server should not be processing this message...") |
| 109 | + return |
| 110 | + print("Login Successfully: ", success) |
| 111 | + |
| 112 | +@rpc("any_peer") |
| 113 | +func login(username: String, password: String) -> void: |
| 114 | + if !multiplayer.is_server(): |
| 115 | + printerr("Client should not be processing this message...") |
| 116 | + return |
| 117 | + |
| 118 | + print("Sending Login...") |
| 119 | + login_callback.rpc_id(multiplayer.get_remote_sender_id(), true) |
| 120 | + |
| 121 | +func ping_all() -> void: |
| 122 | + if !multiplayer.is_server(): |
| 123 | + return |
| 124 | + |
| 125 | + for controlled_peer in controlled_peers.keys(): |
| 126 | + var last_timestamp = controlled_peers[controlled_peer] |
| 127 | + ping.rpc_id(controlled_peer, last_timestamp) |
| 128 | + |
| 129 | +@rpc("any_peer") |
| 130 | +func ping(last_timestamp: int) -> void: |
| 131 | + if multiplayer.is_server(): |
| 132 | + return |
| 133 | + pong.rpc() |
| 134 | + |
| 135 | +@rpc("any_peer") |
| 136 | +func pong() -> void: |
| 137 | + if !multiplayer.is_server(): |
| 138 | + return |
| 139 | + |
| 140 | + var peer: int = multiplayer.get_remote_sender_id() |
| 141 | + controlled_peers[peer] = Time.get_ticks_msec() |
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