Implement phases

scenes/game.gd

@@ -7,13 +7,18 @@ var local_player_name: String
 ## The color to be given to the player controlled by the local peer.
 var local_player_color: Color
 
+
 ## The [PeerNodeDirectory] instance child of this node.
 @onready var peer_dir: PeerNodeDirectory = $"PeerNodeDirectory"
 
 ## The [PlayerNodeDirectory] instance child of this node.
 @onready var player_dir: PlayerNodeDirectory = $"PlayerNodeDirectory"
 
+## The [PhaseTracker] instance child of this node.
+@onready var phase_tracker: PhaseTracker = $"PhaseTracker"
 
+
+## Initialize some signals needed by this node to function properly.
 func init_signals() -> void:
 	multiplayer.connected_to_server.connect(_on_multiplayer_connected_to_server)
 	multiplayer.server_disconnected.connect(_on_multiplayer_disconnected_from_server)
@@ -41,6 +46,7 @@ func _on_multiplayer_peer_connected(peer_id: int) -> void:
 			playernode.rpc_query_name.rpc_id(playernode.get_multiplayer_authority())
 			playernode.rpc_query_color.rpc_id(playernode.get_multiplayer_authority())
 		peer_dir.rpc_create_peernode.rpc(peer_id)
+		rpc_set_phase.rpc_id(peer_id, phase)
 
 func _on_multiplayer_peer_disconnected(peer_id: int) -> void:
 	Log.peer(self, "Peer disconnected: %d" % peer_id)
@@ -81,3 +87,8 @@ func _on_playerdir_playernode_possessed(old: int, new: int, playernode: PlayerNo
 	if playernode.is_multiplayer_authority() and not multiplayer.is_server():
 		playernode.rpc_set_name.rpc(local_player_name)
 		playernode.rpc_set_color.rpc(local_player_color)
+
+
+func _on_main_start_confirmed() -> void:
+	if multiplayer.is_server():
+		rpc_set_phase.rpc(Phase.PLAYING)

scenes/lobby_menu.gd

@@ -7,9 +7,11 @@ signal start_confirmed
 
 
 var players_list: Container
+var start_button: Button
 
 func init_refs():
 	players_list = $"Layout/PlayersList"
+	start_button = $"Layout/HBoxContainer/StartButton"
 
 
 func _on_leave_button_pressed() -> void:

scenes/lobby_menu.tscn

@@ -49,6 +49,7 @@ text = "Esci"
 [node name="StartButton" type="Button" parent="Layout/HBoxContainer"]
 layout_mode = 2
 size_flags_horizontal = 3
+disabled = true
 text = "Avvia"
 
 [connection signal="pressed" from="Layout/HBoxContainer/LeaveButton" to="." method="_on_leave_button_pressed"]

scenes/main.gd

@@ -15,16 +15,16 @@ var client_game_instance: Game = null
 const lobby_menu_scene: PackedScene = preload("res://scenes/lobby_menu.tscn")
 var lobby_menu_instance: LobbyMenu = null
 
-func init_main_menu():
+func init_main_menu() -> void:
 	main_menu_instance = main_menu_scene.instantiate()
 	main_menu_instance.hosting_confirmed.connect(_on_hosting_confirmed)
 	main_menu_instance.connecting_confirmed.connect(_on_connecting_confirmed)
 	interface_instance.add_child(main_menu_instance)
 
-func deinit_main_menu():
+func deinit_main_menu() -> void:
 	main_menu_instance.queue_free()
 
-func init_server_game(server_port: int):
+func init_server_game(server_port: int) -> void:
 	server_game_instance = game_scene.instantiate()
 	server_game_instance.name = "Server"
 	add_child(server_game_instance, true)
@@ -41,12 +41,12 @@ func init_server_game(server_port: int):
 	server_game_instance.init_signals()
 	smp.set_multiplayer_peer(peer)
 
-func deinit_server_game():
+func deinit_server_game() -> void:
 	server_game_instance.multiplayer.multiplayer_peer = null
 	scene_tree.set_multiplayer(multiplayer, ^"/root/Main/Server")
 	server_game_instance.queue_free()
 
-func init_client_game(player_name: String, player_color: Color, server_address: String, server_port: int):
+func init_client_game(player_name: String, player_color: Color, server_address: String, server_port: int) -> void:
 	client_game_instance = game_scene.instantiate()
 	client_game_instance.name = "Client"
 	add_child(client_game_instance, true)
@@ -65,53 +65,66 @@ func init_client_game(player_name: String, player_color: Color, server_address:
 	client_game_instance.local_player_color = player_color
 	smp.set_multiplayer_peer(peer)
 
-func deinit_client_game():
+func deinit_client_game() -> void:
 	client_game_instance.multiplayer.multiplayer_peer = null
 	scene_tree.set_multiplayer(multiplayer, ^"/root/Main/Client")
 	client_game_instance.queue_free()
 
-func init_lobby_menu():
+func init_lobby_menu() -> void:
 	lobby_menu_instance = lobby_menu_scene.instantiate()
-	lobby_menu_instance.leave_confirmed.connect(_on_leave_confirmed)
-	lobby_menu_instance.start_confirmed.connect(_on_start_confirmed)
 	lobby_menu_instance.init_refs()
+	lobby_menu_instance.leave_confirmed.connect(_on_leave_confirmed)
+	if server_game_instance:
+		lobby_menu_instance.start_button.disabled = false
+		lobby_menu_instance.start_confirmed.connect(server_game_instance._on_main_start_confirmed)
 	client_game_instance.multiplayer.server_disconnected.connect(_on_leave_confirmed)
 	client_game_instance.player_dir.child_entered_tree.connect(lobby_menu_instance.players_list._on_playernode_created)
 	client_game_instance.player_dir.child_exiting_tree.connect(lobby_menu_instance.players_list._on_playernode_destroyed)
 	client_game_instance.player_dir.playernode_name_changed.connect(lobby_menu_instance.players_list._on_playernode_name_changed)
 	client_game_instance.player_dir.playernode_color_changed.connect(lobby_menu_instance.players_list._on_playernode_color_changed)
 	client_game_instance.player_dir.playernode_possessed.connect(lobby_menu_instance.players_list._on_playernode_possessed)
+	client_game_instance.phase_tracker.phase_changed.connect(_on_phase_changed)
 	interface_instance.add_child(lobby_menu_instance)
 
-func deinit_lobby_menu():
-	client_game_instance.multiplayer.server_disconnected.disconnect(_on_leave_confirmed)
-	client_game_instance.player_dir.child_entered_tree.disconnect(lobby_menu_instance.players_list._on_playernode_created)
-	client_game_instance.player_dir.child_exiting_tree.disconnect(lobby_menu_instance.players_list._on_playernode_destroyed)
-	client_game_instance.player_dir.playernode_name_changed.disconnect(lobby_menu_instance.players_list._on_playernode_name_changed)
-	client_game_instance.player_dir.playernode_color_changed.disconnect(lobby_menu_instance.players_list._on_playernode_color_changed)
-	client_game_instance.player_dir.playernode_possessed.disconnect(lobby_menu_instance.players_list._on_playernode_possessed)
+func deinit_lobby_menu() -> void:
+	# TODO: Disconnect all signals above
 	lobby_menu_instance.queue_free()
 
-func _ready():
+func _ready() -> void:
 	init_main_menu()
 
-func _on_hosting_confirmed(player_name: String, player_color: Color, server_port: int):
+func _on_hosting_confirmed(player_name: String, player_color: Color, server_port: int) -> void:
 	deinit_main_menu()
 	init_server_game(server_port)
 	init_client_game(player_name, player_color, "127.0.0.1", server_port)
 	init_lobby_menu()
 
-func _on_connecting_confirmed(player_name: String, player_color: Color, server_address: String, server_port: int):
+func _on_connecting_confirmed(player_name: String, player_color: Color, server_address: String, server_port: int) -> void:
 	deinit_main_menu()
 	init_client_game(player_name, player_color, server_address, server_port)
 	init_lobby_menu()
 
-func _on_leave_confirmed():
+func _on_leave_confirmed() -> void:
 	deinit_lobby_menu()
 	deinit_client_game()
 	if server_game_instance != null:
 		deinit_server_game()
 	init_main_menu()
 
-func _on_start_confirmed():
-	pass
+func _on_phase_changed(old: PhaseTracker.Phase, new: PhaseTracker.Phase) -> void:
+	# First, deinitialize the current interface
+	match old:
+		PhaseTracker.Phase.LOBBY:
+			deinit_lobby_menu()
+		PhaseTracker.Phase.PLAYING:
+			pass  # TODO
+		PhaseTracker.Phase.ENDED:
+			pass  # TODO
+	# Then, initialize the new one
+	match new:
+		PhaseTracker.Phase.LOBBY:
+			init_lobby_menu()
+		PhaseTracker.Phase.PLAYING:
+			pass  # TODO
+		PhaseTracker.Phase.ENDED:
+			pass  # TODO

scenes/phase_tracker.gd

@@ -0,0 +1,34 @@
+extends Node
+class_name PhaseTracker
+
+
+## Phases of play of the game.
+enum Phase {
+	## The game is currently gathering players in a lobby.
+	LOBBY,
+	## The game is currently running.
+	PLAYING,
+	## The game has ended.
+	ENDED,
+}
+
+## The phase the game is currently in.
+var phase: Phase = Phase.LOBBY
+
+## Change the current game phase everywhere.
+@rpc("authority", "call_local", "reliable")
+func rpc_set_phase(value: Phase):
+	Log.peer(self, "Changing phase to: %s" % value)
+	if phase != value:
+		var old: Phase = phase
+		phase = value
+		phase_changed.emit(old, value)
+
+## Ask the server which phase the game is currently in.
+@rpc("any_peer", "call_local", "reliable")
+func rpc_query_phase():
+	if multiplayer.is_server():
+		rpc_set_phase.rpc(phase)
+
+## Emitted when the phase changes on the local scene because of [method rpc_set_phase].
+signal phase_changed(old: Phase, new: Phase)

scenes/phase_tracker.tscn

@@ -0,0 +1,3 @@
+[gd_scene format=3 uid="uid://dc8pe5dnk8kbv"]
+
+[node name="PhaseTracker" type="Node"]