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https://github.com/godotengine/godot-demo-projects.git
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0343cedd48
* General proofreading for grammar and spelling * General formatting * Addition of appropriate literals where appropriate, i.e. `&"foo"` for `StringName` cases and `^"foo/bar"` for `NodePath` cases
126 lines
3.8 KiB
GDScript
126 lines
3.8 KiB
GDScript
extends Control
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# Default game server port. Can be any number between 1024 and 49151.
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# Not present on the list of registered or common ports as of May 2024:
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# https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
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const DEFAULT_PORT = 8910
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@onready var address: LineEdit = $Address
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@onready var host_button: Button = $HostButton
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@onready var join_button: Button = $JoinButton
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@onready var status_ok: Label = $StatusOk
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@onready var status_fail: Label = $StatusFail
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@onready var port_forward_label: Label = $PortForward
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@onready var find_public_ip_button: LinkButton = $FindPublicIP
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var peer: ENetMultiplayerPeer
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func _ready() -> void:
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# Connect all the callbacks related to networking.
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multiplayer.peer_connected.connect(_player_connected)
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multiplayer.peer_disconnected.connect(_player_disconnected)
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multiplayer.connected_to_server.connect(_connected_ok)
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multiplayer.connection_failed.connect(_connected_fail)
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multiplayer.server_disconnected.connect(_server_disconnected)
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#region Network callbacks from SceneTree
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# Callback from SceneTree.
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func _player_connected(_id: int) -> void:
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# Someone connected, start the game!
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var pong: Node2D = load("res://pong.tscn").instantiate()
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# Connect deferred so we can safely erase it from the callback.
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pong.game_finished.connect(_end_game, CONNECT_DEFERRED)
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get_tree().get_root().add_child(pong)
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hide()
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func _player_disconnected(_id: int) -> void:
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if multiplayer.is_server():
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_end_game("Client disconnected.")
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else:
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_end_game("Server disconnected.")
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# Callback from SceneTree, only for clients (not server).
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func _connected_ok() -> void:
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pass # This function is not needed for this project.
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# Callback from SceneTree, only for clients (not server).
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func _connected_fail() -> void:
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_set_status("Couldn't connect.", false)
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multiplayer.set_multiplayer_peer(null) # Remove peer.
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host_button.set_disabled(false)
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join_button.set_disabled(false)
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func _server_disconnected() -> void:
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_end_game("Server disconnected.")
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#endregion
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#region Game creation methods
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func _end_game(with_error: String = "") -> void:
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if has_node(^"/root/Pong"):
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# Erase immediately, otherwise network might show
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# errors (this is why we connected deferred above).
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get_node(^"/root/Pong").free()
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show()
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multiplayer.set_multiplayer_peer(null) # Remove peer.
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host_button.set_disabled(false)
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join_button.set_disabled(false)
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_set_status(with_error, false)
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func _set_status(text: String, is_ok: bool) -> void:
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# Simple way to show status.
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if is_ok:
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status_ok.set_text(text)
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status_fail.set_text("")
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else:
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status_ok.set_text("")
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status_fail.set_text(text)
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func _on_host_pressed() -> void:
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peer = ENetMultiplayerPeer.new()
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# Set a maximum of 1 peer, since Pong is a 2-player game.
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var err := peer.create_server(DEFAULT_PORT, 1)
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if err != OK:
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# Is another server running?
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_set_status("Can't host, address in use.",false)
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return
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peer.get_host().compress(ENetConnection.COMPRESS_RANGE_CODER)
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multiplayer.set_multiplayer_peer(peer)
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host_button.set_disabled(true)
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join_button.set_disabled(true)
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_set_status("Waiting for player...", true)
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get_window().title = ProjectSettings.get_setting("application/config/name") + ": Server"
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# Only show hosting instructions when relevant.
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port_forward_label.visible = true
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find_public_ip_button.visible = true
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func _on_join_pressed() -> void:
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var ip := address.get_text()
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if not ip.is_valid_ip_address():
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_set_status("IP address is invalid.", false)
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return
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peer = ENetMultiplayerPeer.new()
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peer.create_client(ip, DEFAULT_PORT)
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peer.get_host().compress(ENetConnection.COMPRESS_RANGE_CODER)
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multiplayer.set_multiplayer_peer(peer)
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_set_status("Connecting...", true)
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get_window().title = ProjectSettings.get_setting("application/config/name") + ": Client"
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#endregion
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func _on_find_public_ip_pressed() -> void:
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OS.shell_open("https://icanhazip.com/")
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