Problem with touch button (when moved)

Question

I got this script for android intput it works fine but the problem comes when the player holds the button and then slides the finger out of it; the button stays pressed even tho the finger is not over it, it stays pressed even when the user doesnt have a finger over the screen(after the sliding thing). How may I solve this issue? Any idea?

public Texture2D pressed, notPressed; public Rigidbody2D Player;

     void Update(){
         this.guiTexture.pixelInset = new Rect(0, 0, Screen.width/3.5f, Screen.height/6f);
 
         SpeedController playerScript = Player.GetComponent<SpeedController>();
         if (Input.touches.Length <= 0) {
             playerScript.move = 0;
         } else 
         {
             
             for (int i= 0; i < Input.touchCount; i++) {
                 
                 if (this.guiTexture.HitTest(Input.GetTouch(i).position))
                 {
                     if(Input.GetTouch(i).phase == TouchPhase.Began){
                         playerScript.left = true;
                         this.guiTexture.texture = pressed;
                     }
                     if(Input.GetTouch(i).phase == TouchPhase.Ended){
                         playerScript.left = false;
                         this.guiTexture.texture = notPressed;
 
                     }
                 }
                 
                 
                 
             }
         }
     }
 }

Answer 1

using UnityEngine;

public class TouchInput : MonoBehaviour {

 Ray ray;
 RaycastHit hit;
 Rigidbody rb;

 public bool left;
 public bool right;
 public bool jump;
 public int speed;



 void Start()
 {
     rb = GameObject.FindGameObjectWithTag("player").GetComponent<Rigidbody>();
     speed = 1;
 }

 void Update()
 {
     if (left)
     {
         rb.AddForce(-10*speed, 0, 0);
     }
     if (right)
     {
         rb.AddForce(10*speed, 0, 0);
     }
     if (jump)
     {
         rb.AddForce(0, 10*speed, 0);
     }
     
     Touch[] myTouches = Input.touches;

     if (Input.touchCount > 0)
     {
         for (int i = 0; i < Input.touchCount; i++)
         {
             ray = Camera.main.ScreenPointToRay(Input.GetTouch(i).position);

             if (Physics.Raycast(ray, out hit, Mathf.Infinity) == true)
             {
                 //touch phase has begun
                 if (Input.GetTouch(i).phase == TouchPhase.Began)
                 {
                     if (hit.collider.tag == "left")
                     {
                         left = true;
                     }
                     else if (hit.collider.tag == "right")
                     {
                         right = true;
                     }
                     else if (hit.collider.tag == "jump")
                     {
                         jump = true;
                     }
                 }
                 //touch phase has ended for buttons
                 else if (Input.GetTouch(i).phase == TouchPhase.Ended)
                 {
                     if (hit.collider.tag == "left")
                     {
                         left = false;
                     }
                     else if (hit.collider.tag == "right")
                     {
                         right = false;
                     }
                     else if (hit.collider.tag == "jump")
                     {
                         jump = false;
                     }
                 }
             }
             if (Physics.Raycast(ray, out hit, Mathf.Infinity) == false)
             {
                 left = false;
                 right = false;
                 jump = false;
             }
         }
     }
 }

}

Answer 2

Answer by DGKN · Jul 24, 2014 at 08:34 PM

Try this :

     for (int i= 0; i < Input.touchCount; i++) 
     {  
         if (this.guiTexture.HitTest(Input.GetTouch(i).position))
         {
              if(Input.GetTouch(i).phase == TouchPhase.Began)
              {
                 playerScript.left = true;
                 this.guiTexture.texture = pressed;
              }
              if(Input.GetTouch(i).phase == TouchPhase.Ended)
              {
                 playerScript.left = false;
                 this.guiTexture.texture = notPressed;
              }
         }
         else 
             playerScript.left = false;
     }

If you hold down the button and release it outside the HitTest area, then playerScript.left remains always TRUE because

if (this.guiTexture.HitTest(Input.GetTouch(i).position))

doesn't apply anymore. So you need a ... = false statement to stop the movement once you're out of the Touch area.

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Trede87 · Jul 24, 2014 at 09:22 PM 0

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I already did that :P but that wasnt the solution because if I do it that way I cannot press two different buttons at the same time(because if I press the second one, the bool gets false) i have donne it in away that doesnt affect the other buttons but if I touch with another finger any part of the screen that is not a GUItexture it goes false and the player stops moving, my solution is just as yours but with an "if" statement, lets see if someone else or you have a better one :)

Problem with touch button (when moved)

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