How to make GUI buttons react when pressed?[C#]

[Sp33dy_Sn1pa]

My GUI buttons work strangely. When pressed on touchscreen, they only react when the finger releases the button. After the finger leaves the button, the button stays in a pressed position. When I double tap the button, it performs the way I want it to which is as a single press and release. My question is, how do I make the button react as if it has been pressed and released when I touch it once?

Here is the code:

using UnityEngine;
using System.Collections;

public class SnakeHead : MonoBehaviour
{
    public float fTurnRate = 200; // Degrees of turning per second
    public float fSpeed = 9.5f; // Units per second of movement
	public Tail var;	
	public bool dead = false;
	public bool FlyUp = false;
	public bool FlyDown = false;	
	public bool debugMode = false;
	public bool centerButton = false;
	public Texture2D buttonImage = null;
	public Texture2D otherImage = null;
	public Texture2D currentImage = null;
	public string buttonLabel = "Fly Up";
	public string otherbuttonLabel = "Fly Down";
	
	private Rect currentRect = new Rect(15, 15, 150, 150);
	private Rect otherRect = new Rect(15, 300, 150, 150);

	//public string title = string.Empty;
	public GUISkin skin = null;
	public bool ButtonOnPress(Rect currentRect, Texture currentImage)
    {
    	GUI.DrawTexture (currentRect, currentImage);
    	if( Input.touchCount == 0)
    	{
    		return false;
    	}
    	foreach (Touch touch in Input.touches)
		{
    		if (touch.phase != TouchPhase.Ended && touch.phase != TouchPhase.Canceled)
    		{
    			if(currentRect.Contains(touch.position))
    			{
    				return true;
    			}
    		}
    	}
    	return false;
    }
	
	void Awake()
	{
		FlyUp = false;
		FlyDown = false;
	}
	
	public void OnGUI()
	{
		if (debugMode || Application.isPlaying)
		{
			if (centerButton)
			{
				currentRect.x = (Screen.width * 0.5f) - (currentRect.width * 0.5f);
				currentRect.y = (Screen.height * 0.5f) - (currentRect.height * 0.5f);
				otherRect.x = (Screen.width * 0.5f) - (otherRect.width * 0.5f);
				otherRect.y = (Screen.height * 0.5f) - (otherRect.height * 0.5f);
			}
			
			if (GUI.Button(currentRect, buttonLabel))
			{
				FlyUp = true;
				FlyDown = false;
			}

			if (GUI.Button(otherRect, otherbuttonLabel))
			{
				FlyDown = true;
				FlyUp = false;
			}
		}
	}
	void Update()
	{
		if (FlyUp)
    	transform.Rotate (Vector3.forward * fTurnRate * Time.deltaTime);
		
    	if (FlyDown)
    	transform.Rotate (-Vector3.forward * fTurnRate * Time.deltaTime);
		
    	transform.localPosition = transform.localPosition + transform.right * fSpeed * Time.deltaTime;
		
		var.TailUpdate();
    }
}

[767_2]

use this code it might help

1

   if(Input.touches.Length == 1)
            {
            Touch touch = Input.touches[0];
    
            if(touch.phase==TouchPhase.Began && guiTexture.HitTest(touch.position))
             {
                //do something
    }


}

[fafase]

All buttons in Unity seem to be OnRelease, if you want to trigger an action on press, you need to come up with your own implementation. By the way, why not using the new uGUI?

Anyway, one way I could recommend is to create a wrapper method to draw the texture and check for press:

public bool ButtonOnPress(Rect rect, Texture texture)
{
    GUI.DrawTexture (rect, texture);
    if( Input.touchCount == 0)
    {
       return false;
    }
    foreach (Touch touch in Input.touches) {
       if (touch.phase == TouchPhase.Began)
       {
            if(rect.Contains(touch.position))
            {
                 return true;
            }
       }    
    }
    return false;
}

This would be called in OnGUI since it contains a GUI method, you could also use a GUITexture so that you do not need the OnGUI call. Pretty much the same though using Unity - Scripting API: GUIElement.HitTest

If you were to use the new uGUI, you just add a button and a script like this:

using UnityEngine;
using UnityEngine.EventSystems;   // This one needed

public class MyScript : MonoBehaviour, IPointerDownHandler  // this interface needed
{

	public void OnPointerDown(PointerEventData ped)
	{
		print ("Pressed");
	}  
}

The you just need to drop that script on the object having the button component