onTriggerEnter will not execute

Questions & Answers
1

I am trying to make a slingshot mechanic very much like angry birds in my game. I only want a specific object to be dragged, but I believe the onTriggerEnter function is not working. I’m not sure why, the code seems to all make sense to me. Any thoughts?

private bool draggingItem = false;
private GameObject draggedObject;
private Vector2 touchOffset;
public Rigidbody2D rb;


void start()
{
    //
}

void Update()
{

}

void OnTriggerEnter(Collider other)
{

    if (HasInput)

    {

        if (other.gameObject.tag == "Draggable")

        {
            DragOrPickUp();
        }
    }

    else
    {
        if (draggingItem)
            DropItem();
    }
}

Vector2 CurrentTouchPosition
{
    get
    {
        Vector2 inputPos;
        inputPos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        return inputPos;
    }
}

Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

private void DragOrPickUp()
{
    
        var inputPosition = CurrentTouchPosition;

        if (draggingItem)
        {
            rb.isKinematic = true;
            draggedObject.transform.position = inputPosition + touchOffset;
        }
        else
        {
            RaycastHit2D[] touches = Physics2D.RaycastAll(inputPosition, inputPosition, 0.5f);
            if (touches.Length > 0)
            {
                rb.isKinematic = true;
                var hit = touches[0];
                if (hit.transform != null)
                {
                    draggingItem = true;
                    draggedObject = hit.transform.gameObject;
                    touchOffset = (Vector2)hit.transform.position - inputPosition;
                    draggedObject.transform.localScale = new Vector3(1.2f, 1.2f, 1.2f);
                }
            }
        }
    }


private bool HasInput
{
    get
    {
        // returns true if either the mouse button is down or at least one touch is felt on the screen
        return Input.GetMouseButton(0);
    }
}

void DropItem()
{
    rb.isKinematic = false;
    draggingItem = false;
    draggedObject.transform.localScale = new Vector3(1f, 1f, 1f);
}

}
2

Change void OnTriggerEnter(Collider other) to void OnTriggerEnter2D(Collider2D other)

3

Just tried that. It didn’t work :frowning:
I made sure that the object has the correct tag, I’m not sure what else it could be.