feat: 优化UI操作逻辑，增加退出游戏按钮

scripts/game/game.gd

@@ -20,6 +20,7 @@ func init() -> void:
 	for address in addresses:
 		if address.substr(0, GameManager.ip_begin.length()) == GameManager.ip_begin:
 			ipaddress = address
+			break
 	$IPLabel.text = ipaddress
 	$Player1/Username.text = GameManager.username
 

scripts/main_menu/main_menu.gd

@@ -7,6 +7,8 @@ func _on_join_game_pressed() -> void:
 func _on_start_game_pressed() -> void:
 	$CreateGameUI.show()
 
-
 func _on_setting_button_pressed() -> void:
 	SceneManager.goto_scene("settings")
+
+func _on_quit_game_pressed() -> void:
+	get_tree().quit()

scripts/settings/settings.gd

@@ -20,7 +20,7 @@ func _on_save_button_pressed() -> void:
 	GameManager.ip_begin = $IPBeginSetting/LineEdit.text
 	GameManager.username = $UsernameSetting/LineEdit.text
 	GameManager.source = $LoadSource/ChooseSource.get_selected()
-	SceneManager.goto_scene("main_menu")
+	$Tips.text = "提示：保存设置成功"
 
 
 func _on_cancel_button_pressed() -> void: