How to make an object invisible before it is triggered to show?

Questions & Answers
1

Hi,

I am working on a 2D mini game.

When the character (player) walks into an invisible trigger, a game object will be shown (and that will be destroyed with Space Bar).

The reason of setting a trigger for each game object is to avoid 1. The player seeing all the game objects too early 2. All the objects being destroyed when the player pushes the space bar for the first time.

My Script for the invisible trigger is successful, however, the game object doesn’t go invisible even when the “Sprite Renderer” box under the Inspector has been unchecked- once I start playing the game, it’s checked.

I have added a separate under the game object to disable the sprite renderer, however, with that, the object doesn’t show.

Thanks in advance!

trigger for the game object to show:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GameObjShow : MonoBehaviour  
{
    public GameObject customImage;
    private SpriteRenderer rend;

    // Start is called before the first frame update
    void Start()
    {
        customImage.SetActive(false);
        rend = customImage.GetComponent<SpriteRenderer>();
        rend.enabled = false;
    }
    void OnTriggerEnter2D(Collider2D other)
    {
        if (other.gameObject.tag == "Player");
        {
            customImage.SetActive(true);
            Debug.Log("On trigger enter 2D");
            rend.enabled = true;
        } 
    }
    // Update is called once per frame
    void Update()
    {
    }
}

sprite renderer disabled for the game object:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SpriteReaction : MonoBehaviour
{
    SpriteRenderer rend;

    // Start is called before the first frame update
    void Start()
    {
        rend = GetComponent<SpriteRenderer>();
    }

    // Update is called once per frame
    void Update()
    {
        this.rend.enabled = false;
    }
}

Thanks!

2

I think the issue is that in the OnTriggerEnter2D you call rend, but do not set it. It looks like an issue of scope. I believe this should work, or declare rend = inside of the onTriggerEnter as well
private SpriteRenderer rend = customImage.GetComponent<SpriteRenderer>();

3

I think that you just need to uncheck the object in the inspector and then when you need it you can activate it again with “yourGameObject.SetActive(true);”