M2.7: Host Game, backups, launchd/systemd samples, hosting and Tailscale guide

scripts/ui/title_screen.gd

@@ -87,8 +87,10 @@ func _ready() -> void:
 	_pages["profile"] = _profile_page()
 	_pages["join"] = _join_page()
 	_pages["lobby"] = _lobby_page()
+	_pages["host"] = _host_page()
 	for p in _pages.values():
 		col.add_child(p)
+	Net.host_status.connect(_on_host_status)
 	Net.joined.connect(_enter_server_world)
 	Net.join_failed.connect(_on_join_failed)
 	Net.left.connect(_on_left)
@@ -127,7 +129,7 @@ func _maybe_capture() -> void:
 	var me: RefCounted = Net.get_identity()
 	if me.name.is_empty():
 		me.name = "Paul"   # in memory only, for the pictures
-	for page in ["main", "new", "load", "profile", "join", "lobby"]:
+	for page in ["main", "new", "load", "profile", "join", "host", "lobby"]:
 		if page == "lobby":
 			# Sample data: the lobby normally needs a live server.
 			Net.server_info = {"server_name": "Paul's island", "motd": "Welcome! Be nice to the wolves.",
@@ -147,7 +149,8 @@ func _unhandled_input(event: InputEvent) -> void:
 	if event is InputEventKey and event.pressed and event.keycode == KEY_ESCAPE and not _pages["main"].visible:
 		if _pages["lobby"].visible:
 			Net.leave()
-		elif Net.state == "connecting":
+		elif Net.state == "connecting" or Net.hosting:
+			Net.stop_hosting()
 			Net.stop()
 			_join_msg.text = ""
 			_show("main")
@@ -155,16 +158,19 @@ func _unhandled_input(event: InputEvent) -> void:
 			_show("main")
 
 func _show(page: String) -> void:
-	# Joining needs a name: send people to their profile first.
-	if page == "join" and Identity.name_problem(Net.get_identity().name) != "":
-		_after_profile = "join"
+	# Joining (or hosting) needs a name: send people to their profile first.
+	if page in ["join", "host"] and Identity.name_problem(Net.get_identity().name) != "":
+		_after_profile = page
 		page = "profile"
+	if page == "host":
+		_fill_host()
 	for k in _pages:
 		_pages[k].visible = k == page
 	_armed_delete = ""
 	if page == "profile":
 		_fill_profile()
 	elif page == "join":
+		_join_shown_at = Time.get_ticks_msec()
 		_join_addr.text = Net.get_identity().last_server
 		_join_btn.disabled = false
 		_join_addr.grab_focus()
@@ -199,6 +205,7 @@ func _main_page() -> Control:
 	var lb := _button("Load World", _show.bind("load"))
 	lb.disabled = worlds.is_empty()
 	v.add_child(lb)
+	v.add_child(_button("Host Game", _show.bind("host")))
 	v.add_child(_button("Join Game", _show.bind("join")))
 	var n: String = Net.get_identity().name
 	v.add_child(_button("Profile: %s" % n if not n.is_empty() else "Set Up Your Profile",
@@ -315,6 +322,119 @@ func _save_profile() -> void:
 	_rebuild_main()
 	_show(_after_profile)
 
+var _join_shown_at := -100000
+
+# --- hosting (M2.7) -------------------------------------------------------------
+
+var _host_name: LineEdit
+var _host_pw: LineEdit
+var _host_port: LineEdit
+var _host_seed: LineEdit
+var _host_seed_label: Label
+var _host_preset: OptionButton
+var _host_msg: Label
+var _host_btn: Button
+const PRESET_IDS := ["co-op", "rivals", "adversarial"]
+const PRESET_NAMES := ["Co-op: no PvP, bases safe, friends share", "Friendly rivals: PvP on, bases safe",
+	"Adversarial: PvP, raiding, locks, drop everything on death"]
+
+func _host_page() -> Control:
+	var p := UITheme.panel()
+	var v := VBoxContainer.new()
+	v.add_theme_constant_override("separation", 7)
+	p.add_child(v)
+	v.add_child(UITheme.label("Host a game", 24))
+	v.add_child(UITheme.label("Runs a server on this computer and puts you in it. Friends join with your address.", 13, UITheme.TEXT_DIM))
+	v.add_child(UITheme.label("Server name", 15, UITheme.TEXT_DIM))
+	_host_name = LineEdit.new()
+	_host_name.custom_minimum_size = Vector2(420, 38)
+	_host_name.max_length = 40
+	v.add_child(_host_name)
+	v.add_child(UITheme.label("Rules", 15, UITheme.TEXT_DIM))
+	_host_preset = OptionButton.new()
+	for n in PRESET_NAMES:
+		_host_preset.add_item(n)
+	_host_preset.custom_minimum_size = Vector2(420, 36)
+	v.add_child(_host_preset)
+	var row := HBoxContainer.new()
+	row.add_theme_constant_override("separation", 10)
+	var c1 := VBoxContainer.new()
+	c1.add_child(UITheme.label("Password (optional)", 15, UITheme.TEXT_DIM))
+	_host_pw = LineEdit.new()
+	_host_pw.secret = true
+	_host_pw.custom_minimum_size = Vector2(200, 38)
+	c1.add_child(_host_pw)
+	row.add_child(c1)
+	var c2 := VBoxContainer.new()
+	c2.add_child(UITheme.label("Port (UDP)", 15, UITheme.TEXT_DIM))
+	_host_port = LineEdit.new()
+	_host_port.custom_minimum_size = Vector2(100, 38)
+	c2.add_child(_host_port)
+	row.add_child(c2)
+	var c3 := VBoxContainer.new()
+	_host_seed_label = UITheme.label("Seed", 15, UITheme.TEXT_DIM)
+	c3.add_child(_host_seed_label)
+	_host_seed = LineEdit.new()
+	_host_seed.placeholder_text = "random"
+	_host_seed.custom_minimum_size = Vector2(100, 38)
+	c3.add_child(_host_seed)
+	row.add_child(c3)
+	v.add_child(row)
+	_host_msg = UITheme.label("", 14, UITheme.TEXT_DIM)
+	_host_msg.autowrap_mode = TextServer.AUTOWRAP_WORD
+	_host_msg.custom_minimum_size = Vector2(420, 0)
+	v.add_child(_host_msg)
+	var h := HBoxContainer.new()
+	h.add_theme_constant_override("separation", 10)
+	_host_btn = _button("Start", _start_host, 140)
+	h.add_child(_host_btn)
+	h.add_child(_button("Back", func():
+		Net.stop_hosting()
+		Net.stop()
+		_show("main"), 120))
+	v.add_child(h)
+	return p
+
+func _fill_host() -> void:
+	var c: RefCounted = load("res://scripts/net/server_config.gd").open(Net.host_config)
+	var n: String = c.data.server_name
+	_host_name.text = "%s's island" % Net.get_identity().name if n == "Emberwild server" else n
+	_host_port.text = str(int(c.data.port))
+	_host_pw.text = String(c.data.password)
+	var preset := "co-op"
+	if bool(c.data.pvp):
+		preset = "adversarial" if bool(c.data.raiding) else "rivals"
+	_host_preset.select(PRESET_IDS.find(preset))
+	var meta_path: String = Net.host_config.get_base_dir().path_join("worlds/server-world/meta.json")
+	var existing: bool = FileAccess.file_exists(meta_path)
+	_host_seed.editable = not existing
+	_host_seed_label.text = "Seed" if not existing else "Seed (kept)"
+	_host_seed.text = "" if not existing else str(int(c.data.seed))
+	_host_msg.text = "Your hosted island carries on where you left it." if existing else "A new island will be made."
+	_host_msg.add_theme_color_override("font_color", UITheme.TEXT_DIM)
+	_host_btn.disabled = false
+
+func _start_host() -> void:
+	var port_t := _host_port.text.strip_edges()
+	if not port_t.is_valid_int() or int(port_t) < 1024 or int(port_t) > 65535:
+		_on_host_status("The port is a number from 1024 to 65535 (24242 is the usual one)", true)
+		return
+	var seed_t := _host_seed.text.strip_edges()
+	var seed := int(seed_t) if seed_t.is_valid_int() else (seed_t.hash() if not seed_t.is_empty() else randi() % 1000000)
+	var name := _host_name.text.strip_edges()
+	if name.is_empty():
+		name = "%s's island" % Net.get_identity().name
+	_host_btn.disabled = true
+	Net.host(name, _host_pw.text, int(port_t), PRESET_IDS[maxi(_host_preset.selected, 0)], seed)
+
+func _on_host_status(text: String, failed: bool) -> void:
+	if not _pages["host"].visible:
+		return
+	_host_msg.text = text
+	_host_msg.add_theme_color_override("font_color", UITheme.BAD if failed else UITheme.TEXT_DIM)
+	if failed:
+		_host_btn.disabled = false
+
 func _join_page() -> Control:
 	var p := UITheme.panel()
 	var v := VBoxContainer.new()
@@ -350,6 +470,9 @@ func _join_page() -> Control:
 	return p
 
 func _connect() -> void:
+	# (A click or Enter carried over from the page before can't connect.)
+	if Time.get_ticks_msec() - _join_shown_at < 400:
+		return
 	if _join_addr.text.strip_edges().is_empty():
 		_join_msg.text = "Enter the server's address"
 		_join_msg.add_theme_color_override("font_color", UITheme.BAD)
@@ -360,6 +483,9 @@ func _connect() -> void:
 	Net.join(_join_addr.text, _join_pw.text)
 
 func _on_join_failed(reason: String) -> void:
+	if _pages["host"].visible:
+		_on_host_status(reason, true)
+		return
 	_join_btn.disabled = false
 	_join_msg.text = reason
 	_join_msg.add_theme_color_override("font_color", UITheme.BAD)