Binding UI elements to objects?

Unity Engine
1

Greetings,

I am working with UI elements with my personal project at the moment, and while I am trying to design what I want my UI to look like, I was wondering how you would assign a ui element to pop up only around certain objects.

As a real world example, take the menu system from old school Secret of Mana. When you hit the Menu button, the menu would appear around just your character.

I want to have a similar effect for objects as well. For example, clicking on a tree produces a UI which gives you options of what you can do with that tree.

Thank you for any input you can give me.

2

You can use this script to Anchor a recttransform to a transform to in your scene.

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class WorldSpaceAnchor : MonoBehaviour {
    public Transform Anchor;
    private RectTransform myRectTransform;
    private Vector2 guiScreenPos;
    [Header("Optional")]
    [Tooltip("If empty the main Camera will be userd.")]
    public Camera TargetCamera;
    private CanvasScaler myCanvasScaler;
    private CanvasGroup myCanvasGroup;
    private float scaleFactorX , scaleFactorY ;
    private Vector3 screenPos;

    // Use this for initialization
    void Start () {
        myRectTransform = GetComponent<RectTransform>();
        myCanvasScaler = transform.root.GetComponent<CanvasScaler>();
        myRectTransform.anchorMin = new Vector2(0,0);
        myRectTransform.anchorMax = new Vector2(0,0);

    }

    // Update is called once per frame
    void Update () {
        if(Anchor != null)
        {
            if(TargetCamera != null)
            {
                screenPos = TargetCamera.WorldToScreenPoint(Anchor.position);
            }
            else
            {
                screenPos = Camera.main.WorldToScreenPoint(Anchor.position);
            }
            scaleFactorX = myCanvasScaler.referenceResolution.x / Screen.width;
            scaleFactorY = myCanvasScaler.referenceResolution.y / Screen.height;
            myRectTransform.anchoredPosition = new Vector2(screenPos.x * scaleFactorX, screenPos.y * scaleFactorY);

        }
    }
}
1 Like
3

Ill give that a try, thank you