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Question by fluxhackspro · May 15, 2017 at 01:23 AM · 2duiraycastloop

Raycast on ui elements not working?

Hello fellow developers. I've been working on a card game for the past 5 days and im trying to work out the attacking of the cards (so cards can attack each other). I can select cards and now im trying to send out a raycast that from the mouse and if i hit a card and rightclick i will go through all the cards in the scene and then find the selected one ( there can only be one). And after that attack! But the raycast is not working and i dont know why, is it because of the ui? I thank you for your advice in advance. ~flux

This is attached to every card in the game. Every card also has a 'playcard' script NOTE that the debug is not printing

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class attackCard : MonoBehaviour {
 
     GameObject[] allCards;
 
     public void Update ()
     {
         RaycastHit2D hit = Physics2D.Raycast (Camera.main.ScreenToWorldPoint (Input.mousePosition), Vector2.zero);
 
         if (hit.transform == this.transform.gameObject)
         {
             if (Input.GetMouseButtonDown (1))
             {
                 Debug.Log (hit.transform.name);
 
                 for (int i = 0; i < allCards.Length; i++)
                 {
                     if (allCards [i].GetComponent<PlayCard> ().selected == true)
                     {
                         allCards [i].GetComponent<Info> ().currentHP -= this.GetComponent<Info> ().startAttack;
                         this.GetComponent<Info> ().currentHP -= allCards [i].GetComponent<Info> ().startAttack;
                         allCards [i].GetComponent<PlayCard> ().selected = false;
                     }
                 }
             }
         }
     }
 }
 

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avatar image Bodrp · May 15, 2017 at 01:23 PM 0
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First, this line if (hit.transform == this.transform.gameObject) compares a Transform with a GameObject. You might want to try comparing both Transforms.

Second, do your cards have a collider?

Also, on a more "code cleaning" note, is there a reason why you raycast everyframe ins$$anonymous$$d of on mouseclick only? And could you manage inputs outside of your attack card and do one raycast only ins$$anonymous$$d of one per card?

avatar image danmartelly_caliper · May 15, 2017 at 02:18 PM 0
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Do you have a collider on the cards?

From https://docs.unity3d.com/ScriptReference/Physics2D.Raycast.html : "Casts a ray against colliders in the scene."

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