How to get a GUI button to run a script

Questions & Answers
1

Hi,

I have a GUI button, which as the onclick function set to run the Pushback function, but whwn the button is pressed, nothing happens.

Here is the code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Pushbackbutton2 : MonoBehaviour {
    Vector3 tempPos;
    Vector3 tempPosY;
    public GameObject Aircraft;
    
    public void Pushback()
    {
        
        
            InvokeRepeating("Rotate", 0f, 0.25f);
           tempPos = Aircraft.transform.position;
           tempPos.x -= 0.0003f;
           Aircraft.transform.position = tempPos;
           tempPosY = Aircraft.transform.position;
          tempPosY.y -= 0.0001f;
           Aircraft.transform.position = tempPosY;
            Debug.Log("working");
        
        }

    

   void Rotate()
    {
       transform.Rotate(Vector3.back);
    }
}

Does anyone have any ideas?

Thanks

4

The code is working fine, but you just cant see the difference, because the movement speed is way too slow. Also the rotating function is not even rotating…
I fixed some bugs and improved your code:

    //Variables
    public GameObject Aircraft;

    private bool canMoveaircraft;

    private float Timer;

    public void Pushback()
    {
        //Start rotating aircraft
        InvokeRepeating("Rotate", 0f, 0.01f);
    }

    void Update()
    {
        Debug.Log(Aircraft.transform.rotation.z);

        //Increase timer
        Timer += Time.deltaTime;

        //If the aircraft is turned then:
        if (Aircraft.transform.rotation.z <= -0.8f)
        {
            //Stop rotating aircraft
            CancelInvoke("Rotate");
            canMoveaircraft = true;
        }

        //If boolean canMoveaircraft is enabled:
        if (canMoveaircraft)
        {
            //Set timer to 0
            Timer = 0;

            //If timer is smaller than 5:
            if (Timer < 1f)
            {
                //Move aircraft
                Aircraft.transform.Translate(new Vector3(0, 0.1f, 0));
            }
        }
    }


    void Rotate()
    {
        //Rotate aircraft
        Aircraft.transform.Rotate(Vector3.forward, Time.deltaTime * 20f, Space.Self);
    }
5

As we don’t see the other script, we cant be sure that its typed correct. What I try if something is not working is to go back to the most simplest form you can think of to make this work. I would try something like this:

public class ButtonToClick : MonoBehaviour{
    
    void OnGUI()
    {
        if(GUI.Button(new Rect(10,10,100,100), "Click this"))){
            GameObject.Find("PushBackButton").GetComponent<PushBackButton>().PushBack();
        }
    }
}

public class PushBackButton : Monobehaviour{

    public void PushBack(){
       Debug.Log("PushBack!");
    }

}

When you are absolutely sure that the communication between scripts is correct, continue adding code.

2

Did you ensure that the Button’s Image-Component has its “Raycast Target”-Flag toggled to true?

See: Raycast target on UI elements - Questions & Answers - Unity Discussions

If not, that would be a possible reason for the click event not executing.

3

Seems right. Make sure you GameObject the behavior is attached to is ACTIVE in the inspector when you press play. If you are pulling this from a prefab, you might have issues considering it might not be in the scene.

6

Fixed using code:

/*==============================================================================

==============================================================================*/

using UnityEngine;
using System.Collections;

public class MoveBackwards : MonoBehaviour 
{
    #region Inspector

    public AudioSource PushbackAudio;

    public float maxRotationDegrees = 10f;
    public float rotationSpeed = 2f;

    public float maxDistance = 5f;
    public float moveSpeed = 2f;

    #endregion //Inspector

    private float traveledDistance;
    private float rotatedAmount;
    private bool isMoving;

    #region Unity Engine & Events

    private void Update()
    {

        AudioSource audio = GetComponent<AudioSource>();
        
        if(isMoving)
        {
            if(traveledDistance < maxDistance)
            {
                Vector3 moveDirection = -transform.up;
                transform.position += moveDirection * moveSpeed * Time.deltaTime;
                traveledDistance += Mathf.Abs(moveSpeed * Time.deltaTime);
            }
            if(rotatedAmount < maxRotationDegrees)
            {
                transform.Rotate(0, 0, rotationSpeed * Time.deltaTime);
                rotatedAmount += Mathf.Abs(rotationSpeed * Time.deltaTime);
            }
        }
    }

    #endregion //Unity Engine & Events

    public void Move()
    {
        PushbackAudio.Play();
        isMoving = true;
    }

}