feat: implement core movement, combat, weapon management, and networking systems

ui/main_menu/main_menu.gd

@@ -13,6 +13,11 @@ func _ready() -> void:
 	var nm = get_node_or_null("/root/NetworkManager")
 	if nm:
 		nm.connection_succeeded.connect(_on_connection_succeeded)
+		
+		# Auto-open lobby if returning to main menu while still connected
+		if nm.multiplayer.has_multiplayer_peer() and not nm.multiplayer.multiplayer_peer is OfflineMultiplayerPeer:
+			call_deferred("_on_connection_succeeded")
+			call_deferred("_hide_ui_vbox")
 	
 	# ==========================================
 	# BACKGROUND: 3D DIORAMA (Sliding Player)
@@ -242,6 +247,31 @@ func _ready() -> void:
 	)
 	hl_left.add_child(_gamemode_opt)
 	
+	var time_label = Label.new()
+	time_label.text = "Match Duration"
+	time_label.add_theme_font_size_override("font_size", 32)
+	hl_left.add_child(time_label)
+	
+	var _time_opt = OptionButton.new()
+	_time_opt.add_theme_font_size_override("font_size", 24)
+	_time_opt.add_item("1 Minute", 0)
+	_time_opt.add_item("3 Minutes", 1)
+	_time_opt.add_item("5 Minutes", 2)
+	_time_opt.add_item("10 Minutes", 3)
+	_time_opt.add_item("15 Minutes", 4)
+	_time_opt.select(2) # Default 5 Minutes
+	_time_opt.add_to_group("host_only_ui")
+	_time_opt.item_selected.connect(func(index: int):
+		var net_man = get_node_or_null("/root/NetworkManager")
+		if net_man:
+			if index == 0: net_man.match_duration_setting = 60.0
+			elif index == 1: net_man.match_duration_setting = 180.0
+			elif index == 2: net_man.match_duration_setting = 300.0
+			elif index == 3: net_man.match_duration_setting = 600.0
+			elif index == 4: net_man.match_duration_setting = 900.0
+	)
+	hl_left.add_child(_time_opt)
+	
 	var hl_spacer = Control.new()
 	hl_spacer.size_flags_vertical = Control.SIZE_EXPAND_FILL
 	hl_left.add_child(hl_spacer)
@@ -410,9 +440,12 @@ func _on_network_player_disconnected(_id: int) -> void:
 	_update_lobby_players()
 
 func _update_lobby_players() -> void:
-	if not _host_lobby_players_list: return
+	if not is_inside_tree() or not _host_lobby_players_list: return
+	
+	var nm = get_node_or_null("/root/NetworkManager")
+	if not nm: return
+	
 	_host_lobby_players_list.clear()
-	var nm = get_node("/root/NetworkManager")
 	
 	for pid in nm.player_stats.keys():
 		var p_name = nm.player_stats[pid].get("username", "Unknown")
@@ -438,6 +471,10 @@ func _on_settings_pressed() -> void:
 func _on_exit_pressed() -> void:
 	get_tree().quit()
 
+func _hide_ui_vbox() -> void:
+	if _ui_vbox:
+		_ui_vbox.hide()
+
 # ==========================================
 # 3D DIORAMA BUILDER
 # ==========================================

ui/match_hud.gd

@@ -102,9 +102,13 @@ func _ready() -> void:
 		_nm.stats_updated.connect(_update_hud)
 		_nm.killfeed_event.connect(_on_killfeed_event)
 		_nm.match_state_updated.connect(_update_timer)
+		_nm.match_ended.connect(_on_match_ended)
 		_update_hud()
 
 func _process(_delta: float) -> void:
+	if _nm and not _nm.match_active:
+		return
+		
 	if Input.is_action_just_pressed("scoreboard"):
 		_scoreboard_panel.show()
 		_update_hud()
@@ -212,3 +216,66 @@ func _on_killfeed_event(victim: String, killer: String, weapon: String, v_color:
 	t.tween_interval(4.0)
 	t.tween_property(l, "modulate:a", 0.0, 1.0)
 	t.tween_callback(l.queue_free)
+
+func _on_match_ended() -> void:
+	# Hide top HUD and killfeed
+	var top_margin = get_child(0)
+	if top_margin and top_margin is MarginContainer:
+		top_margin.hide()
+	var kf_margin = get_child(1)
+	if kf_margin and kf_margin is MarginContainer:
+		kf_margin.hide()
+		
+	_scoreboard_panel.show()
+	_update_hud()
+	
+	Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
+	
+	# Disable player controls
+	var player = get_parent()
+	if player:
+		var machine = player.get_node_or_null("MovementStateMachine")
+		if machine:
+			machine.process_mode = Node.PROCESS_MODE_DISABLED
+		var cam = player.get("camera")
+		if cam:
+			var wman = cam.get_node_or_null("WeaponManager")
+			if wman:
+				wman.process_mode = Node.PROCESS_MODE_DISABLED
+	
+	var end_vbox = VBoxContainer.new()
+	end_vbox.alignment = BoxContainer.ALIGNMENT_CENTER
+	
+	var end_label = Label.new()
+	end_label.text = "MATCH OVER"
+	end_label.add_theme_font_size_override("font_size", 72)
+	end_label.add_theme_color_override("font_color", Color(1.0, 0.2, 0.2))
+	end_label.add_theme_color_override("font_outline_color", Color.BLACK)
+	end_label.add_theme_constant_override("outline_size", 16)
+	end_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	end_vbox.add_child(end_label)
+	
+	var spacer = Control.new()
+	spacer.custom_minimum_size = Vector2(0, 650) # 600 for scoreboard + 50 padding
+	end_vbox.add_child(spacer)
+	
+	var btn_margin = MarginContainer.new()
+	btn_margin.add_theme_constant_override("margin_left", 100)
+	btn_margin.add_theme_constant_override("margin_right", 100)
+	
+	var lobby_btn = Button.new()
+	lobby_btn.text = "Return to Lobby"
+	lobby_btn.add_theme_font_size_override("font_size", 32)
+	lobby_btn.pressed.connect(func():
+		get_tree().change_scene_to_file("res://ui/main_menu/main_menu.tscn")
+	)
+	btn_margin.add_child(lobby_btn)
+	end_vbox.add_child(btn_margin)
+	
+	var kf_margin2 = get_node_or_null("MarginContainer2")
+	if not kf_margin2:
+		var center = CenterContainer.new()
+		center.name = "MarginContainer2"
+		center.set_anchors_preset(Control.PRESET_FULL_RECT)
+		center.add_child(end_vbox)
+		add_child(center)

ui/pause_menu.gd

@@ -262,6 +262,7 @@ func _build_ui() -> void:
 	
 	var user_input = LineEdit.new()
 	user_input.text = SettingsManager.username
+	user_input.max_length = 16
 	user_input.custom_minimum_size = Vector2(200, 0)
 	user_hbox.add_child(user_input)