Detecting touch on a guiTexture

Can anyone help with a code snippet on how to detect touching a guiTexture?

I've gone through the Penelope example, and while there is a lot of good stuff in there on moving a guiTexture around for a joystick, it's so complex that I can't reverse engineer and extract the bit I need to just detect when it's touched.

One thought I had: since I'm just making a button that never moves, should I actually be trying to detect hitting the button itself, or do I really just want to detect when I'm touching the screen space occupied by the button? I may be over thinking it, but in any case, an actual script example would go a long way.

Thanks

 

To detect a hit on a GUITexture, you need to use the HitTest method on the object as follows:

In your loop over all the touches (see the examples), add the following:

(variable declarations ommitted)

touchObj = iPhoneInput.GetTouch(touchCounter);

if (touchObj.phase == iPhoneTouchPhase.Began) {

if (myGuiTextObject.HitTest(touchObj.position, touchCamera)) {

// Do something with the touch event.

}
}

touchCamera is either a reference to the main camera or a designated one if you are using multiple cameras. The HitTest method returns true if the GUITexture has been touched.

 

Sweet. That was exactly what I needed. Thanks

 

damn my method used the x/y coords and the height/width to make a bounding box...

your way looks much cleaner...


scripting fail

 

Glad it helped. I can't take credit for it. I stole if from someone else here many months ago (probably Eric)

 

I too have been using x/y and width/height.

Was great seeing this new method, far cleaner indeed.

Many thanks,
matt.

 

I use this (c#)
(looks to me to be the least cpu-cycle eating one)

Code (csharp):

1.  
2. touchObj = iPhoneInput.GetTouch(touchCounter);
3.  
4. if (touchObj.phase == iPhoneTouchPhase.Began)
5. {
6.     if( myguiTexture.GetScreenRect().Contains( touchObj.position) )
7.     {
8.         // DoSomething
9.     }
10. }

 

Hi

Code (csharp):

1.  
2. (variable declarations ommitted)
3.  
4. touchObj = iPhoneInput.GetTouch(touchCounter);
5.  
6. if (touchObj.phase == iPhoneTouchPhase.Began) {
7.  
8. if (myGuiTextObject.HitTest(touchObj.position, touchCamera)) {
9.  
10. // Do something with the touch event.
11.  
12. }
13. }
14.  

I'm trying to add a "Fire" button to the Joystick.js from Penelope

But I keep getting a "HitTest" is not a member of iPhoneTouch

 

HitTest is a method on a GUITexture object. Not a touch object. Take a look at the code snippet again and you will see this.

 

For we non-programmer types, can you clarify what you mean?

I've been trying to get this Javascript to work, but not sure what to add/remove.

Cheers

 

The GUITexture and GUIText classes have the HitTest method, but the iPhoneTouch class doesn't. You just call the HitTest method on a GUIText/GUITexture object with a point on the screen to see if it "hits".

 

does anyone here have any examples of how to convert the EVAC-City Tutorial to unity Iphone. I pretty stumped.. I went through the Penelope tutorial and to be honest I still can't get a simple script that gets that I touched a GUITexture on a main menu to do well anything.

 

This is what I use (and variations of depending on situations) to detect touch on a GUITexture. Stick it in a script and attach the script to the GUITexture

Code (csharp):

1.  
2. function Update() {
3.    
4.    
5.     if(iPhoneInput.touchCount > 0)
6.     {
7.         var touch: iPhoneTouch = iPhoneInput.touches[0];
8.  
9.         if(touch.phase == iPhoneTouchPhase.Began  guiTexture.HitTest(touch.position))
10.        
11.         {
12.                          //Do really amazing stuff here
13.          }
14.     }
15. }
16.  
17.  

 

Dear Guys,

To be honest I am new for Unity3D.
I try to make some touch screen function using the script given by groovfruit, then I add some action that is Application.LoadLevel(...);
the Final script like this:
function Update() {

if(iPhoneInput.touchCount > 0)
{
var touch: iPhoneTouch = iPhoneInput.touches[0];

if(touch.phase == iPhoneTouchPhase.Began guiTexture.HitTest(touch.position))
{
Application.LoadLevel(4); //Do really amazing stuff here
}
}
}

I use this script in GUI Texture to be act as a Button. The problem was come up when there were two GUI Texture in the same place, using this script seems like it touched twice even though I just touch it once. Anybody can help me? Thanks before

 

I did another HitTest on the area that was not covered by another gui element.

 

I don't understand, when i do this i got an error "Update() can not be a coroutine"
What's it ? And how can i solve it ?

 

Can you please give us the variable? Thanks!

 

everything else seems to be ok but can't get my way through this touchcounter variable it will be realy appreciable if u can tell that how you defined it.

 

What I just learned yesterday and what Im happy to share is:

1) Create a GUITexture
2) add the script below to the GUITexture transform or gameObject

Im not 100% but I believe the for loop is for multiple touches which iterates through the count (Input.touchCount) so that you can be touching something else on the screen and still be able to use the button The Really nice thing I like about this is that I can move the GUITexture around in the X and Y on screen and it still works in different positions and scales nice with different resolutions.

Code (csharp):

1. function Update()
2. {
3.     var count : int = Input.touchCount;
4.    
5.     for(var i: int = 0;i < count; i++)//for multi touch
6.     {
7.         var touch : Touch = Input.GetTouch(i);
8.    
9.         if(guiTexture.HitTest(touch.position)  touch.phase == TouchPhase.Began)
10.         {
11.             print("Red Button Clicked or EVEN BETTER AWESOME STUFF!");
12.         }
13.     }
14. }

 

i was trying to detect whether my touch is inside or outside my joystick GUI texture and finallly this code worked for me.(just attach the script to the texture)

function Update()
{
if (Input.touchCount > 0 )
{
var touchPosition:Vector2 = Input.GetTouch(0).position;
if (guiTexture.HitTest(touchPosition) )
{print("in");}
else
{print("out");}
}
}

 

THANK YOU! After a day of searching I think this is the answer I was looking for. Missing the HitTest part the whole time.... derp.

 

thank you soo for your answer I LOVE UNİTY