detect click on canvas

Question

Hello
I'm trying to add a HUD in my project and I want that when I click on the canvas ( which is 20% of the screen ) my player dont move.
It's moving by a raycast statement, so I tryied this but it doesnt work :

         if (Physics.Raycast(ray, out hit) ) {
         
             if(hit.transform.gameObject.layer == 5)
             {
                 print("Ui element was click");
             }
             SetDestination();
          }

Answer 1

Best Answer

Answer by TreyH · Jul 08, 2018 at 01:32 AM

There's a fairly detailed example in the docs to do just this. I'll clean their example up a bit for you, but the modifications for your exact situation are straightforward.

As mentioned on that page, this will be attached to your Canvas object so that it can access its GraphicRaycaster component.

 using System.Collections.Generic;
 
 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
 
 public class CheckClicks : MonoBehaviour
 {
     // Normal raycasts do not work on UI elements, they require a special kind
     GraphicRaycaster raycaster;
 
     void Awake()
     {
         // Get both of the components we need to do this
         this.raycaster = GetComponent<GraphicRaycaster>();
     }
 
     void Update()
     {
         //Check if the left Mouse button is clicked
         if (Input.GetKeyDown(KeyCode.Mouse0))
         {
             //Set up the new Pointer Event
             PointerEventData pointerData = new PointerEventData(EventSystem.current);
             List<RaycastResult> results = new List<RaycastResult>();
 
             //Raycast using the Graphics Raycaster and mouse click position
             pointerData.position = Input.mousePosition;
             this.raycaster.Raycast(pointerData, results);
 
             //For every result returned, output the name of the GameObject on the Canvas hit by the Ray
             foreach (RaycastResult result in results)
             {
                 Debug.Log("Hit " + result.gameObject.name);
             }
         }
     }
 }

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imM4TT · Jul 08, 2018 at 01:54 AM 0

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Thanks !
I ill look at this
But as far as I understand, it's on the canvas that i must put this script, so, I have no idea to go forward with my issue which is on my player script

$$anonymous$$y player have a script attached to and on this script I said when I click somewhere, move to this point

I would like to make this function unavailable if the click is on the canvas so my player dont move

Have you any idea ?
Edit : Ok I see why it's not working on my 1st post , do you suggest me a static var to communicate between script to know if the click was on the canvas ?

TreyH imM4TT · Jul 08, 2018 at 02:31 AM 0

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This doesn't necessarily have to be on your canvas. This just has to reference the components on your canvas. There are several ways to go about this, but those are all covered extensively across this forum.

jorgecastillodp · Jun 26, 2019 at 04:56 PM 1

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Amazing! thank you

PixelFireXY · Feb 21, 2020 at 03:38 PM 1

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O$$anonymous$$G this finally works!!! Thank you so much!!! <3

samra2494 · Sep 09, 2020 at 11:16 AM 1

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Thanks a lot, I finally find your solution possible for me :)

augustomoreirapedro06 · 8 hours ago 0

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Hi! Is there any way that this works with buttons?

detect click on canvas

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