Problem with GUITexture displayed c# unity3d

Questions & Answers
1

Hi guys, I have found script from the internet that the GUI Texture follows the player. It is worked, but once I pressed W and S, the position of the GUI Texture is not top of the player like once I pressed A and D.

Below is the picture that I am talking about: (Notice that when the GUI Texture is not on the top of the player anymore, I have pressed W or S, the GUI Texture is moving to the left side once I have pressed W, and it is moving to the right side, once I have pressed S).

Here is the picture:

![1]

Here is the large picture (link):

Link Image

Here is the code that I have found on the internet:

using UnityEngine;
using System.Collections;

public class IconFollow : MonoBehaviour
{
    public Transform target;                // Object that this label should follow
    public RaycastHit hit;
    public Vector3 offset = Vector3.up;     // Units in world space to offset; 1 unit above object by default
    public Camera cameraToUse;              // Only use this if useMainCamera is false

    public bool clampToScreen = false;      // If true, label will be visible even if object is off screen
    public float clampBorderSize = .05f;    // How much viewport space to leave at the borders when a label is being clamped
    public bool useMainCamera = true;       // Use the camera tagged MainCamera

    private Camera cam;
    private Transform thisTransform;
    private Transform camTransform;

    private void Start()
    {
        thisTransform = transform;

        if (useMainCamera)
        {
            cam = Camera.main;
        }

        else
        {
            cam = cameraToUse;
        }

        camTransform = cam.transform;
    }

    private void OnGUI()
    {
        if (Portal.onTriggered)
        {
            this.guiTexture.enabled = true;

            ShowIcon();
        }

        else if (!Portal.onTriggered)
        {
            this.guiTexture.enabled = false;
        }
    }

    private void ShowIcon()
    {
        if (target)
        {
            var relativePoint = cam.transform.InverseTransformPoint(target.position);

            if (clampToScreen)
            {
                var relativePosition = camTransform.InverseTransformPoint(target.position);
                relativePosition.z = Mathf.Max(relativePosition.z, 1.0f);
                thisTransform.position = cam.WorldToViewportPoint(camTransform.TransformPoint(relativePosition + offset));
                thisTransform.position = new Vector3(Mathf.Clamp(thisTransform.position.x, clampBorderSize, 1.0f - clampBorderSize), Mathf.Clamp(thisTransform.position.y, clampBorderSize, 1.0f - clampBorderSize), thisTransform.position.z);
            }

            else
            {
                if (relativePoint.z > 0.0)
                {
                    if (Physics.Raycast(cam.transform.position, (target.position - cam.transform.position), out hit, Mathf.Infinity))
                    {
                        if (hit.transform == target)
                        {
                            thisTransform.position = cam.WorldToViewportPoint(target.position + offset);
                            this.guiTexture.enabled = true;
                        }

                        else
                        {
                            this.guiTexture.enabled = false;
                        }
                    }
                }
            }
        }

        else
        {
            Destroy(gameObject, 0.8f);
        }
    }
}

Below is the code that been using for the player movement:

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(CharacterController))] // This script requires CharacterController attached to the game object where this script attached into

public class CheckPlayer : MonoBehaviour 
{
    private Vector3 moveDirection = Vector3.zero; // Define and set for the movement of the player is not moving by default

    private float gravity = 20.0f, speed = 5.0f; // Define and set for the gravity, speed of the player

    private void Update()
    {
        // Rotate the Player
        transform.Rotate(0, Input.GetAxis("Rotate") * 60.0f * Time.deltaTime, 0);

        Camera.main.transform.eulerAngles = new Vector3(0, Input.GetAxis("Rotate") * 60.0f * Time.deltaTime, 0);

        // Get the CharacterController component
        CharacterController controller = GetComponent<CharacterController>();

        // If the character is on the ground
        if (controller.isGrounded)
        {
            // Get the axis direction for the movement of the character from the Input in the editor
            moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));

            // Player movement depends on the move direction
            moveDirection = transform.TransformDirection(moveDirection);

            // The player movement is depends on the player speed
            moveDirection *= speed;
        }

        // How much for the time for player takes to hit the ground because of gravity
        moveDirection.y -= gravity * Time.deltaTime;

        // Move the character each second while pressing the key input defined in the editor
        controller.Move(moveDirection * Time.deltaTime);
    }
}

Your answer much appreciated!

Thank you

2

First, not use your GUITexture in OnGUI(), instead into Update() or LateUpdate(). For GUITexture I use a few script (base example write on CSharp).

 public Transform target = null; //target for texture
 public Vector3 offset = Vector3.up; //Vector of offset position

 void Start() {
  this.setPosScr();
 }

 void LateUpdate() {
  this.setPosScr();
 }

 public void setPosScr() {
  Vector3 screenPos = Camera.WorldToScreenPoint(target.position + offset); //Calc screen position from world
  this.transform.position = Vector3.zero; //set always postion (0, 0, 0), maybe object is parenting
  this.guiTexture.pixelInset = new Rect(screenPos.x, Screen.height - screenPos.y, this.guiTexture.pixelInset.width, this.guiTexture.PixelInset.height); //set position texture
 }

Of course, you can write restriction at an exit for the screen. I hope that it will help you.