Raycast Not Working

Questions & Answers
1

Hey all,

I’m trying to make an object (with a box collider) interact with a click to exit out of a while loop using a Raycast. However, although I think I have all the components necessary to initiate it, nothing happens when I click on the object, and the while loop keeps looping. The snippet of code follows:

    public IEnumerator Qone()
    {

        t.text = "A: 1";
        while (i == 0)
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Input.GetMouseButtonDown(0))
            {
                if (Physics.Raycast(ray, out hit))
                {
                    if (hit.transform.name == "A")
                    {
                        Debug.Log("hit");
                        i = 1;
                    }
                }
            }
            Debug.Log("F");
            yield return null ;
        }

        i = 0;
        StopAllCoroutines();
    }
2

Works perfectly for me. Are you sure your object you clicked on is named “A”?

3

Physics.Raycast returns the first thing it hits. If you happen to have anything in front of ‘A’ or if your B, C, and D all have box colliders as well, they could be the ones getting hit.

Try Physics.RaycastAll:

public IEnumerator Qone()
	{

		//t.text = "A: 1";
		while (i == 0) {
			if (Input.GetMouseButtonDown(0)) {

				Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
				RaycastHit[] hits = Physics.RaycastAll(ray);

				foreach(var hit in hits) { 
					if (hit.transform.name == "A") {
						Debug.Log("hit");
						i = 1;
					}
				}
			}
			Debug.Log("F");
			yield return null;
		}

		i = 0;
		StopAllCoroutines();
	}
4

I’ve solved it! For some reason, Box Collider 2D doesn’t work with Raycast, so putting a normal Box Collider on the object fixed the problem. Thanks for your help.