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Question by Ivan_Bozovic · Dec 11, 2015 at 01:55 PM · colliderontriggerenterbooleans

Bool wont return to false

 using UnityEngine;
 using System.Collections;
 
 public class AFPCCrouchChecker : MonoBehaviour
 {
     public bool anythingAbovePlayer = false;
 
     void OnTriggerEnter(Collider other)
     {
         if (other.gameObject.tag != "Player")
         {
             if (other.gameObject != null)
                 anythingAbovePlayer = true;
             else
                 anythingAbovePlayer = false;
         }
     }
 }

In that code my bool is working to set it self true, but it wont turn back to false. I can set false while in game in the inspector but the else block just won't work. I don't know why?

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avatar image gjf · Dec 09, 2015 at 08:30 PM 1
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other.gameObject will ALWAYS be non-`null`...so it's never going to be set to false

if it were null, then you'd get an error on the previous if statement (line 10 in your code)

avatar image Ivan_Bozovic gjf · Dec 10, 2015 at 06:06 PM 0
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So, how can I get it to check if any object is in my collider?

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Answer by Yuvii · Dec 11, 2015 at 02:16 PM

OnTriggerEnter is a function called only on the frame where something entered in the trigger. So when there's nothing in the trigger, it won't call the function.

change your code to have something like that

 void OnTriggerEnter(Collider other)
      {
          if (other.gameObject.tag != "Player")
          {
                  anythingAbovePlayer = true;
          }
      }
 
 void OnTriggerExit(Collider other)
      {
          if (other.gameObject.tag != "Player")
          {
                  anythingAbovePlayer = false;
          }
      }

but if more than one things can be in the trigger at the same time you'll need to declare a counter like this

 int counter = 0;
 
 void Update(){
     if(counter > 0)
          anythingAbovePlayer = true;
     else
          anythingAbovePlayer = false;
 }
 
 void OnTriggerEnter(Collider other)
       {
           if (other.gameObject.tag != "Player")
           {
                   counter++;
           }
       }
  
  void OnTriggerExit(Collider other)
       {
           if (other.gameObject.tag != "Player")
           {
                   counter--;
           }
       }

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avatar image Ivan_Bozovic · Dec 11, 2015 at 06:00 PM 0
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Thank you so much for helping me fix this problem :)

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