feat: support configurable game server address and port

* Launch game servers in headless mode
* Add configurable game address and port to GameData
* Pass dynamically assigned server ports to clients
* Update lobby defaults for `0.0.0.0:8080`
* Refactor server command-line argument handling

globals/instance_launcher.gd

@@ -13,7 +13,10 @@ func _wait_for_child(id: String, port: String, mode: String) -> void:
 
 	var output    := []
 	var exit_code := OS.execute(
-		"./game.sh", ["--", "server_" + port, "game", mode],
+		"./game.sh",
+		[
+			"--headless", "--", "server_" + port, "game", mode
+		],
 		output,
 		true
 	)

scenes/data_bridge/game_data.gd

@@ -1,6 +1,10 @@
 class_name GameData extends Node
 
 
+var game_address: String = "0.0.0.0"
+var game_port: int       = 8080
+
+
 func _init() -> void:
 	Globals.game_data = self
 

scenes/data_bridge/lobby_data.gd

@@ -45,11 +45,15 @@ func _launch_game_server(
 	var port: String = InstanceLauncher.launch_game_server(match_entry.data.type)
 	if port == "-1":
 		# TODO: Alert clients that the game wont be created due to
-		#       server reaching number of allowed instances 
+		#       server reaching number of allowed instances.
 		return
 
-	Globals.game_data.rpc_id(client1.id, "set_game_address", "127.0.0.1")
+	# TODO: Set address dynamically; I.E. if game on different server than lobby.
-	Globals.game_data.rpc_id(client2.id, "set_game_address", "127.0.0.1")
+	#       As is, clients use the lobby address since games launch on new ports.
+	#       Will have to change how we watch game server death if on diff server.
+	#Globals.game_data.rpc_id(client1.id, "set_game_address", "51.222.85.126")
+	#Globals.game_data.rpc_id(client2.id, "set_game_address", "51.222.85.126")
+
 	Globals.game_data.rpc_id(client1.id, "set_game_port", port)
 	Globals.game_data.rpc_id(client2.id, "set_game_port", port)
 

scenes/ui_controls/lobby_screen/lobby_ui.tscn

@@ -44,10 +44,10 @@ size_flags_horizontal = 3
 [node name="host_address_input" type="LineEdit" parent="body/left_body/server_host_hbox"]
 layout_mode = 2
 size_flags_horizontal = 3
-text = "127.0.0.1"
+text = "0.0.0.0"
 placeholder_text = "Server Address: (Eg. 0.0.0.0)"
 alignment = 1
-max_length = 12
+max_length = 15
 emoji_menu_enabled = false
 clear_button_enabled = true
 caret_blink = true
@@ -57,7 +57,7 @@ layout_mode = 2
 min_value = 1.0
 max_value = 65535.0
 page = 10.0
-value = 31315.0
+value = 8080.0
 rounded = true
 alignment = 1
 

server.gd

@@ -22,6 +22,8 @@ func _ready() -> void:
 	for arg in OS.get_cmdline_user_args():
 		if "name_" in arg:
 			name_(arg)
+		elif "server_" in arg:
+			server_(arg)
 
 		match arg:
 			"server":
@@ -36,6 +38,16 @@ func name_(arg: String) -> void:
 	var game_name = arg.split("_")[-1]
 	self.name     = game_name
 
+func server_(arg: String) -> void:
+	var host_port = float(arg.split("_")[-1])
+
+	Globals.game_state.set_game_scene(
+		"res://scenes/screens/lobby_screen/lobby.tscn"
+	)
+
+	$scene/lobby_screen.find_child("host_port_range", true, false).set_value_no_signal(host_port)
+	$scene/lobby_screen.find_child("host_start_bttn", true, false).emit_signal("pressed")
+
 func server(_arg: String) -> void:
 	Globals.game_state.set_game_scene(
 		"res://scenes/screens/lobby_screen/lobby.tscn"