Show gameobject on tap hide on untap using arrays

Question

Hi.

I am building an Trophy area for my game and I am looking for some help. I am trying to achieve the following:

When tap an image show the description and when this image is untaped hide the description

I created the Trophies.cs and attached it to the scene.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Trophies : MonoBehaviour
 {
   
     public GameObject[] TrophiesImages;
     public GameObject[] TrophiesDescription;
   
     void Start()
     {
         for (int i = 0; i < TrophiesDescription.Length; i++)
         {
             TrophiesDescription[i].SetActive(true);
         }
     }
 }

But how to create a dinamic code to auto control the action without doing it one by one? I was thinking about in doing one action for each trophy and do SetActive to true and false.... but I would like some light in doing it dinamicaly.

Thanks.

Answer 1

Answer by Hellium · Jun 10, 2019 at 03:56 PM

Supposing the trophies are UI elements:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.EventSystems;
 
 public class Trophies : MonoBehaviour
 {
     public GameObject[] TrophiesImages;
     public GameObject[] TrophiesDescription;
 
     void Start()
     {
         for ( int i = 0 ; i < TrophiesDescription.Length ; i++ )
         {
             AddEventTrigger( TrophiesImages[i], TrophiesDescription[i] );
             TrophiesDescription[i].SetActive( false );
         }
     }
 
     private void AddEventTrigger( GameObject trophy, GameObject description )
     {
         EventTrigger trigger = trophy.AddComponent<EventTrigger>();
 
         // Pointer down => show
         EventTrigger.Entry pointerDownEntry = new EventTrigger.Entry();
         pointerDownEntry.eventID = EventTriggerType.PointerDown;
         pointerDownEntry.callback.AddListener( data => ShowDescription( description ) );
         trigger.triggers.Add( pointerDownEntry );
 
         // Pointer up => hide
         EventTrigger.Entry pointerUpEntry = new EventTrigger.Entry();
         pointerUpEntry.eventID = EventTriggerType.PointerUp;
         pointerUpEntry.callback.AddListener( data => HideDescription( description ) );
         trigger.triggers.Add( pointerUpEntry );
     }
 
     private void ShowDescription( GameObject description )
     {
         for ( int i = 0 ; i < TrophiesDescription.Length ; ++i )
             TrophiesDescription[i].SetActive( false );
 
         description.SetActive( true );
     }
 
     private void HideDescription( GameObject description )
     {
         description.SetActive( false );
     }
 }

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khrysller · Jun 10, 2019 at 05:08 PM 0

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alt text

Thanks... I tried use this but it has no effect. The image show how I set up it... can you please help me again telling me if this is right? The trophies images are actually buttons...

thanks again

capture.png (20.1 kB)

Hellium khrysller · Jun 10, 2019 at 05:20 PM 0

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The trophies should not be buttons, just elements receiving clicks (Image / Text with RaycastTarget set to true). Have you an EventSystem in your scene? A GraphicRaycaster?

khrysller · Jun 10, 2019 at 05:51 PM 0

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Yes.. alt text

Sorry I am learning unity yep... I might be missing something... alt text

2.png (11.3 kB)

Hellium khrysller · Jun 10, 2019 at 06:02 PM 0

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This should work (here, it works perfectly fine).

When you start the game, do the TrophiesImages have an EvenTrigger component?

$$anonymous$$ake sure the EventSystem detect your images. See following answer to check this:

https://answers.unity.com/questions/1402544/so-my-buttons-stop-working.html#answer-container-1402559

khrysller · Jun 10, 2019 at 06:58 PM 0

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alt text

It is... Sorry for the long conversation... but I dunno why it is not working

3.png (11.6 kB)

Hellium khrysller · Jun 10, 2019 at 07:17 PM 0

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Have you tried to put a Debug.Log inside the ShowDescription and HideDescription to see if the functions are called?

Show gameobject on tap hide on untap using arrays

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