How to check for number of colliders?

Unity Engine
1

In my jenga game im setting up what happens when a block hits the floor, i want to set it so it basically says:
if 1 block hits the floor, thats fine, destroy the block
if more then 1 block hits the floor then do something else
how would i go about that?
here is my current code for that part

    void OnTriggerEnter(Collider other){
        if (other.tag == "Block") {
                        triggerhit = true;
                        Destroy (other.gameObject);

                }
        }
2

Keep track of all objects with that Tag then you can check the amount that have hit / went though that collider.

    System.Collections.Generic.List<GameObject> _objects = new System.Collections.Generic.List<GameObject>();

    void OnTriggerEnter(Collider other) {
        if(string.Equals(other.tag, "Block") == true) {

            if(_objects.Contains(other.gameObject) == false) {
                _objects.Add(other.gameObject); // Keeps track
            }

            if(_objects.Count == 1) {
                // One block landed
            } else {
                // more than one
            }
        }
    }

    void OnTriggerExit(Collider other) {
        if(_objects.Contains(other.gameObject) == true) {
            _objects.Remove(other.gameObject); // Remove object that left the trigger.
        }
    }
3

Hey is there a way i can reset this?
For example, in my testing, after one block has hit the trigger and been destroyed, anything after it will cause the else function

What i would like:
In normal jenga once player one successfully removes one piece from the tower,
it becomes player two’s go to do the same
however in this instance no matter how the second player goes about it, they are encountering the else part of the script as one block has already collided?

4

What do you mean by ‘reset’ if you are destroying the objects then I can see what you mean by an issue there will be null refs everywhere. To manually reset you can just do a simple call

_objects.Clear();
5

Thanks that was kind of what i meant, however now player one could knock over several blocks at one time and be fine,
is there a way I could set it up so theres either a timer checking only one block has fallen in that time,
or that only one block has fallen as “playerone” etc