How can I start countdown after OnTriggerEnter2D and change bool check to false

Question

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class TripleShot : MonoBehaviour
 {
 
     public static bool check;
 
     public void OnTriggerEnter2D(Collider2D col)
         {
             if (col.tag == "Player")
             {
                 Destroy(this.gameObject);
                 SoundManager.instance.Play(SoundManager.SoundName.tripleShotCollect);
                 check = true;
                 StartCoroutine(tripleShotTimer());
             }
         }
     IEnumerator tripleShotTimer()
     {
         yield return new WaitForSeconds(10f);
         check = false;
     } 
 }

Answer 1

Best Answer

Answer by Narc0t1CYM · Mar 13 at 11:11 PM

In order for a collision to happen, you need a BoxCollider2D with Is Trigger set to true and a RigidBody to collide with each other.

Player should have a RigidBody and a BoxCollider2D component attached to it with the below PlayerPowerUp script attached as well

The power-up should have a BoxCollider2D component attached with Is Trigger set to true with the below TripleShot script attached as well

PlayerPowerUp.cs

 using System.Collections;
 using UnityEngine;
 
 public class PlayerPowerUp : MonoBehaviour
 {
     private bool _hasTripleShot;
 
     private void Update() {
         if (_hasTripleShot) {
             // Player can do something here
         }
     }
 
     public void StartTripleShotCountdown() {
         StartCoroutine(TripleShotTimer());
     }
 
     public IEnumerator TripleShotTimer() {
         Debug.Log("Player has Triple Shot power-up");
         _hasTripleShot = true;
         
         yield return new WaitForSeconds(10f);
         
         _hasTripleShot = false;
         Debug.Log("Player doesn't have Triple Shot power-up anymore");
     } 
 }

TripleShot.cs

 using UnityEngine;
 
 public class TripleShot : MonoBehaviour
 {
     public void OnTriggerEnter2D(Collider2D col)
     {
         if (col.CompareTag("Player")) {
             Debug.Log("Colission is happening");
             SoundManager.instance.Play(SoundManager.SoundName.tripleShotCollect);
 
             PlayerPowerUp playerPowerUp = col.GetComponent<PlayerPowerUp>();
 
             if (!playerPowerUp) {
                 Debug.LogError("PowerUpScript is not found on player");
             }
             // Call the player's TripleShotTimer CoRoutine
             playerPowerUp.StartTripleShotCountdown();
             Destroy(gameObject);
         }
     }
 }

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unity_OwUCpCrs4mGrzQ · Mar 16 at 08:15 AM 0

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I need when player picks up the item, that item should disappear on the screen. So I need to destroy it immediately when player gets it.

About collision, it worked but I need countdown for 10s then back to normal. now I have when the player gets the item, the player will have a special power but my problem is how to countdown for 10s then back player to normal power. So I tried use bool check for countdown it 10s then change it to false. but it didnt work.

:D

Narc0t1CYM unity_OwUCpCrs4mGrzQ · Mar 16 at 10:32 AM 0

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As I understand, this TripleShot is a power-up that the player can pick up. If you want your player to have this power-up for 10 seconds then I'll edit my initial answer that will fit your need.

Narc0t1CYM unity_OwUCpCrs4mGrzQ · Mar 16 at 10:38 AM 0

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Updated my answer based on your previous comment

unity_OwUCpCrs4mGrzQ Narc0t1CYM · Mar 16 at 10:53 AM 1

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It worked!! Thank you so much

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Answer 2

Answer by kaushiknis · Mar 16 at 02:59 PM

The issue here is you are destroying the gameobject on which you are calling the coroutine. You can shift the coroutine code to an active gameobject and that can fix your issue

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unity_OwUCpCrs4mGrzQ · Mar 16 at 03:07 PM 0

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oh, that's why. thank you very much.

kaushiknis unity_OwUCpCrs4mGrzQ · Mar 16 at 06:51 PM 0

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I'm glad I was able to resolve. Can you please accept this solution as correct, if it solve your issue. Thanks

How can I start countdown after OnTriggerEnter2D and change bool check to false

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