3 objects at the same time????

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.SceneManagement;
5.  
6. public class door : MonoBehaviour
7. {
8.     private bool enterAllowed;
9.  
10.  
11.     private void OnTriggerEnter2D(Collider2D collision)
12.     {
13.         if (collision.GetComponent<player1>())
14.         {
15.             if (collision.GetComponent<player2>())
16.             {
17.                 enterAllowed = true;
18.             }
19.         }
20.     }
21.     private void OnTriggerExit2D(Collider2D collision)
22.     {
23.         if (collision.GetComponent<player1>() || collision.GetComponent<player2>())
24.         {
25.             enterAllowed = false;
26.         }
27.     }
28.  
29.     private void Update()
30.     {
31.         if (enterAllowed && Input.GetKey(KeyCode.Return))
32.         {
33.             SceneManager.LoadScene("level2");
34.         }
35.     }
36.  
37.  
38.  
39.  
40. }
41.  

 

hi I am working on a game where you have to open a door but the door is too heavy for 1 player so you have to be 2. I do not understand how to detect when 3 or more objects collide !!! I have tried to write some code but it does not work !!

 

The trigger enter and exit callbacks are called for each individual collider that enters/exits the one you are on. So assuming that player1 and player2 are attached to two different game objects, line 17 will never be executed.

Instead, if you want to check if two or more colliders currently overlap with this one, a straightforward way is to increment a counter when an object enters and decrement it when one exits. Then check the current counter value. If you need to retain references to the objects, store them in a list and add/remove them accordingly.