UI Appears only When Moving the mouse Slightly

Unity Engine
,
1

The UI Only Appears whenThe mouse is Slightly getting moved

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using Cursor = UnityEngine.Cursor;

public class MainManager : MonoBehaviour
{
    private Button nag;
    private VisualElement rootVisualElement;

    [SerializeField]
    private GameObject mainUI;
    private void OnEnable()
    {
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;

        rootVisualElement = mainUI.GetComponent<UIDocument>().rootVisualElement;
        //rootVisualElement.panel.visualTree.style.display = DisplayStyle.None;

        nag = rootVisualElement.Q<Button>("NAG");

        nag.RegisterCallback<ClickEvent>(ev => sayNag());
    }

    private void sayNag()
    {
        Debug.Log("NAG");
    }

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.E))
        {
            rootVisualElement.MarkDirtyRepaint();

            if (Cursor.lockState == CursorLockMode.None)
            {
                Cursor.lockState = CursorLockMode.Locked;
                Cursor.visible = false;

                //mainUI.SetActive(false);
                rootVisualElement.panel.visualTree.style.display = DisplayStyle.None;
            }
            else
            {
                Cursor.lockState = CursorLockMode.None;
                Cursor.visible = true;
                //mainUI.SetActive(true);
                rootVisualElement.panel.visualTree.style.display = DisplayStyle.Flex;
            }
            //Canvas.ForceUpdateCanvases();
            //rootVisualElement.Focus();
        }
    }
}

UI Builder and UI Toolkit are on Version 1.0.0-preview.17

So basically i have no idear how to make the UI Instantly appear i found rootVisualElement.MarkDirtyRepaint(); witch helps sometimes but not really

Help would be Apreciated Thanks in advance
Entchenklein

2

Hi Entchenklein!

Does moving the code from Update() to rootVisualElement.RegisterCallback() help ?

3

Thank you very mutch hugobd

This fixes my problem however the KeyDownEvent fires Twice witch i currently prevent by using the once boolean in my code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using Cursor = UnityEngine.Cursor;

public class MainManager : MonoBehaviour
{
    private VisualElement container;
    private VisualElement rootVisualElement;

    [SerializeField]
    private GameObject mainUI;
    private void OnEnable()
    {
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;

        rootVisualElement = mainUI.GetComponent<UIDocument>().rootVisualElement;
        //rootVisualElement.panel.visualTree.style.display = DisplayStyle.None;

        rootVisualElement.RegisterCallback<KeyDownEvent>(OnKeyDown);
        container = rootVisualElement.Q<VisualElement>("Inventory");

        //nag.RegisterCallback<ClickEvent>(ev => sayNag());
    }

    private void sayNag()
    {
        Debug.Log("NAG");
    }

    bool once = true;
    void OnKeyDown(KeyDownEvent ev)
    {
        if (once)
        {
            once = false;
        }
        else
        {
            once = true;
            return;
        }
        Debug.Log("NAG1");
        if (Input.GetKeyDown(KeyCode.E))
        {
            //rootVisualElement.MarkDirtyRepaint();
            Debug.Log("ASD");

            if (container.style.display == DisplayStyle.Flex)
            {
                Debug.Log("HIDDEN");

                Cursor.lockState = CursorLockMode.Locked;
                Cursor.visible = false;

                //mainUI.SetActive(false);
                //rootVisualElement.panel.visualTree.style.display = DisplayStyle.None;

                //container.style.visibility = Visibility.Hidden;
                container.style.display = DisplayStyle.None;
            }
            else
            {
                Debug.Log("VISIBLE");

                Cursor.lockState = CursorLockMode.None;
                Cursor.visible = true;
                //mainUI.SetActive(true);
                //container.style.visibility = Visibility.Visible;
                container.style.display = DisplayStyle.Flex;


                //rootVisualElement.panel.visualTree.style.display = DisplayStyle.Flex;
            }
            //Canvas.ForceUpdateCanvases();
            //rootVisualElement.Focus();
        }
    }
}
4

Glad it help!
Is it sending the same key twice ? You can also find the Keycode from the event like so ev.keyCode.

5

Thank you for all the help

Its not the same key when i press for example E it will have the keycode E and another with keycode None

Well this code now works fine its just weard to me it fires a second time so if there is a solution for that aswell i would be gratefull but it doesnt matter that mutch

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using Cursor = UnityEngine.Cursor;

public class MainManager : MonoBehaviour
{
    private VisualElement container;
    private VisualElement rootVisualElement;

    [SerializeField]
    private GameObject mainUI;
    private void OnEnable()
    {
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;

        rootVisualElement = mainUI.GetComponent<UIDocument>().rootVisualElement;
        //rootVisualElement.panel.visualTree.style.display = DisplayStyle.None;

        rootVisualElement.RegisterCallback<KeyDownEvent>(OnKeyDown);
        container = rootVisualElement.Q<VisualElement>("Inventory");

        //nag.RegisterCallback<ClickEvent>(ev => sayNag());
    }

    private void sayNag()
    {
        Debug.Log("NAG");
    }

    bool once = true;
    void OnKeyDown(KeyDownEvent ev)
    {
        Debug.Log("KEY:" + ev.keyCode);

        if (ev.keyCode == KeyCode.E)
        {
            //rootVisualElement.MarkDirtyRepaint();

            if (container.style.display == DisplayStyle.Flex)
            {
                Cursor.lockState = CursorLockMode.Locked;
                Cursor.visible = false;

                //mainUI.SetActive(false);
                //rootVisualElement.panel.visualTree.style.display = DisplayStyle.None;

                //container.style.visibility = Visibility.Hidden;
                container.style.display = DisplayStyle.None;
            }
            else
            {
                Cursor.lockState = CursorLockMode.None;
                Cursor.visible = true;
                //mainUI.SetActive(true);
                //container.style.visibility = Visibility.Visible;
                container.style.display = DisplayStyle.Flex;


                //rootVisualElement.panel.visualTree.style.display = DisplayStyle.Flex;
            }
            //Canvas.ForceUpdateCanvases();
            //rootVisualElement.Focus();
        }
    }
}
1 Like