feat: Implement core lobby system including UI, player management, and game mode settings.

scenes/lobby.gd

@@ -7,6 +7,7 @@ extends Control
 @onready var browse_rooms_btn = $MainMenuPanel/VBoxContainer/ButtonSection/BrowseRoomsBtn
 @onready var main_menu_profile_btn = $MainMenuPanel/VBoxContainer/ButtonSection/ProfileBtn
 @onready var lobby_settings_btn = $MainMenuPanel/VBoxContainer/ButtonSection/SettingsBtn
+@onready var quit_btn = $MainMenuPanel/VBoxContainer/ButtonSection/QuitBtn
 
 # UI References - Server Selection
 @onready var server_option = $MainMenuPanel/VBoxContainer/ServerSelectionSection/ServerOption
@@ -142,6 +143,8 @@ func _ready():
 		lobby_settings_btn.pressed.connect(_on_settings_pressed)
 	if leaderboard_btn:
 		leaderboard_btn.pressed.connect(_on_leaderboard_pressed)
+	if quit_btn:
+		quit_btn.pressed.connect(_on_quit_pressed)
 	
 	# Connect Server Selection signals
 	if server_option:
@@ -585,6 +588,10 @@ func _on_logout_pressed() -> void:
 	AuthManager.logout()
 	_go_to_login()
 
+func _on_quit_pressed() -> void:
+	print("[Lobby] Quitting game...")
+	get_tree().quit()
+
 func _on_settings_pressed():
 	var settings_menu = get_node_or_null("SettingsMenu")
 	if not settings_menu:

scenes/lobby.tscn

@@ -151,11 +151,17 @@ theme_override_font_sizes/font_size = 16
 text = "SETTINGS"
 
 [node name="ProfileBtn" type="Button" parent="MainMenuPanel/VBoxContainer/ButtonSection" unique_id=1640960506]
-custom_minimum_size = Vector2(0, 36)
 layout_mode = 2
+custom_minimum_size = Vector2(0, 36)
 theme_override_font_sizes/font_size = 14
 text = "PROFILE"
 
+[node name="QuitBtn" type="Button" parent="MainMenuPanel/VBoxContainer/ButtonSection" unique_id=123456780]
+layout_mode = 2
+custom_minimum_size = Vector2(0, 36)
+theme_override_font_sizes/font_size = 14
+text = "QUIT GAME"
+
 [node name="RoomListPanel" type="PanelContainer" parent="." unique_id=1782359692]
 visible = false
 layout_mode = 1

scenes/main.gd

@@ -1286,7 +1286,8 @@ func create_bot_with_state(bot_id: int, pos: Vector2i, p_score: int, p_goals: Ar
 
 func _on_host_disconnected():
 	"""Called when the host leaves. Returns clients to the main menu."""
-	print("[Main] Host disconnected. Match terminated. Returning to lobby...")
+	print("[Main] Host disconnected. Match terminated. Cleaning up and returning to lobby...")
+	LobbyManager.leave_room()
 	get_tree().change_scene_to_file("res://scenes/lobby.tscn")
 
 func _on_rematch_starting():
@@ -1575,6 +1576,14 @@ func sync_grid_item(x: int, y: int, z: int, item: int):
 			# OR Layer 1 is already a wall (4)
 			if f0 in [4, -1] or f1 == 4:
 				return
+				
+			# TEKTON DOORS: Prevent placing items on portal doors
+			if LobbyManager.is_game_mode(GameMode.Mode.TEKTON_DOORS):
+				var doors = get_tree().get_nodes_in_group("PortalDoors")
+				for door in doors:
+					var door_grid = enhanced_gridmap.local_to_map(enhanced_gridmap.to_local(door.global_position))
+					if door_grid.x == x and door_grid.z == z:
+						return
 
 		enhanced_gridmap.set_cell_item(Vector3i(x, y, z), item)
 		# Force visual update
@@ -1601,6 +1610,17 @@ func sync_grid_items_batch(data: Array):
 			if f0 in [4, -1] or f1 == 4:
 				continue
 				
+			# TEKTON DOORS: Prevent placing items on portal doors
+			if LobbyManager.is_game_mode(GameMode.Mode.TEKTON_DOORS) and y == 1:
+				var doors = get_tree().get_nodes_in_group("PortalDoors")
+				var on_door = false
+				for door in doors:
+					var door_grid = enhanced_gridmap.local_to_map(enhanced_gridmap.to_local(door.global_position))
+					if door_grid.x == x and door_grid.z == z:
+						on_door = true
+						break
+				if on_door: continue
+				
 		enhanced_gridmap.set_cell_item(Vector3i(x, y, z), item)
 		
 	# Force visual update ONCE after batch
@@ -2084,12 +2104,8 @@ func _on_back_to_menu_pressed():
 	"""Return to lobby/main menu and clean up game state."""
 	print("[Main] Returning to lobby...")
 	
-	# Proper ordered cleanup to avoid ghost players
+	# Proper ordered cleanup to avoid ghost players and desync
-	GameStateManager.end_game()
+	LobbyManager.leave_room()
-	LobbyManager.reset()
-	
-	# Properly disconnect from Nakama match
-	_cleanup_multiplayer()
 	
 	# Small delay to let cleanup settle
 	await get_tree().create_timer(0.2).timeout
@@ -2357,8 +2373,8 @@ func _on_settings_pressed():
 
 func _on_quit_match_pressed():
 	get_tree().paused = false # Ensure unpaused when returning to menu
-	# Properly disconnect from Nakama match
+	# Properly disconnect from Nakama and clear lobby state to prevent desync
-	_cleanup_multiplayer()
+	LobbyManager.leave_room()
 	# Return to lobby or main menu
 	get_tree().change_scene_to_file("res://scenes/lobby.tscn")
 

scenes/portal_door.tscn

@@ -50,6 +50,11 @@ properties/3/replication_mode = 2
 [node name="PortalDoor" type="StaticBody3D"]
 script = ExtResource("1_script")
 
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.1, 0)
+shape = SubResource("BoxShape3D_trigger")
+
+
 [node name="MultiplayerSynchronizer" type="MultiplayerSynchronizer" parent="."]
 replication_config = SubResource("SceneReplicationConfig_portal")
 

scripts/managers/lobby_manager.gd

@@ -144,6 +144,13 @@ func leave_room() -> void:
 	"""Leave the current room."""
 	print("[LobbyManager] Leaving room. Clearing all local state.")
 	
+	# If we are the host, notify all clients to kick them back to menu/lobby
+	if is_host and multiplayer.has_multiplayer_peer() and multiplayer.is_server():
+		print("[LobbyManager] Host is leaving. Kicking all clients...")
+		# We use rpc() instead of .rpc() for compatibility with older Godot 4 versions if applicable, 
+		# but .rpc() is standard in 4.x. Let's stick to standard.
+		kick_all_clients.rpc()
+	
 	# Important: Reset all lobby settings and player lists first
 	reset()
 	
@@ -214,6 +221,16 @@ func _check_all_ready() -> void:
 func is_all_ready() -> bool:
 	return _all_ready
 
+@rpc("authority", "call_local", "reliable")
+func kick_all_clients() -> void:
+	"""Called on all clients when the host leaves to ensure they are returned to the menu."""
+	if not is_host:
+		print("[LobbyManager] Received kick from host. Returning to menu...")
+		disconnect_reason = "Host left the lobby. Room closed."
+		emit_signal("host_disconnected")
+		# We use call_deferred to avoid potential issues during RPC stack processing
+		call_deferred("leave_room")
+
 # =============================================================================
 # Game Start
 # =============================================================================
@@ -636,6 +653,14 @@ func _on_peer_connected(peer_id: int) -> void:
 
 func _on_peer_disconnected(peer_id: int) -> void:
 	"""Called when peer disconnects."""
+	print("Peer disconnected: ", peer_id)
+	
+	# If the host (peer 1) disconnected and we are not host, we should be kicked
+	if peer_id == 1 and not is_host:
+		print("[LobbyManager] Host peer disconnected. Kicking self...")
+		_on_server_disconnected()
+		return
+
 	for i in range(players_in_room.size()):
 		if players_in_room[i]["id"] == peer_id:
 			players_in_room.remove_at(i)
@@ -652,8 +677,9 @@ func _on_server_disconnected() -> void:
 	print("[LobbyManager] Server (Host) disconnected. Terminating room...")
 	disconnect_reason = "Host disconnected. Match terminated."
 	rematch_votes.clear()
-	emit_signal("host_disconnected")
+	# Ensure full cleanup and state reset
 	leave_room()
+	emit_signal("host_disconnected")
 
 # =============================================================================
 # Rematch Logic

scripts/managers/playerboard_manager.gd

@@ -370,7 +370,18 @@ func auto_put_item() -> bool:
 			var pos = neighbor.position
 			var cell_3d = Vector3i(pos.x, 1, pos.y)
 			if enhanced_gridmap.get_cell_item(cell_3d) == -1 and not player.is_position_occupied(pos):
-				valid_put_positions.append(pos)
+				# TEKTON DOORS: Avoid portal doors
+				var is_on_portal = false
+				if LobbyManager.is_game_mode(GameMode.Mode.TEKTON_DOORS):
+					var doors = get_tree().get_nodes_in_group("PortalDoors")
+					for door in doors:
+						var door_grid = enhanced_gridmap.local_to_map(enhanced_gridmap.to_local(door.global_position))
+						if Vector2i(door_grid.x, door_grid.z) == pos:
+							is_on_portal = true
+							break
+				
+				if not is_on_portal:
+					valid_put_positions.append(pos)
 
 	if valid_put_positions.is_empty():
 		return false

scripts/managers/portal_mode_manager.gd

@@ -479,7 +479,7 @@ func _refresh_tiles():
 	var door_positions = []
 	for door in doors:
 		if is_instance_valid(door):
-			var local_pos = gridmap.local_to_map(door.global_position)
+			var local_pos = gridmap.local_to_map(gridmap.to_local(door.global_position))
 			door_positions.append(Vector2i(local_pos.x, local_pos.z))
 
 	for x in range(GRID_SIZE):