How to destroy object by touch?

Questions & Answers
1

I tried this code:

if (Input.touchCount > 0)
	{
		var ray = Camera.main.ScreenPointToRay (Input.GetTouch(0).position);
		var hit: RaycastHit;
		if (Physics.Raycast (ray, hit))
		{
			if (hit.collider.tag == "Enemy")
			{
				Destroy(hit.transform.gameObject);
			}
		}
	
	}

But nothing happens when I play my game on the phone. I just want to destroy objects from prefabs when I touch them. They just fall down like raindrops.
What should I do?

EDIT:
Here’s what works (Thank you JeffreyD!):

if (Input.touchCount > 0)

    {

        var hit : RaycastHit2D = Physics2D.Raycast(Camera.main.ScreenToWorldPoint((Input.GetTouch(0).position)), Vector2.zero);



        if(hit.collider != null)

        {

            Destroy(hit.transform.gameObject);

        }

    }
2

I’d do something like…
`
bool myDebug = false; // set to true to see debug info in console

void Update()
{
	int fingerCount = 0;

	RaycastHit hitInfo;
	Ray rayOrigin = Camera.main.ScreenPointToRay(Input.mousePosition);

	//Debug.DrawRay(transform.position, vfwd * 20, Color.red);

	foreach (Touch touch in Input.touches)
	{
	    if (touch.phase != TouchPhase.Ended && touch.phase != TouchPhase.Canceled)
		fingerCount++;
	}

	if (fingerCount > 0)
	{
	    if (myDebug)
	    {
	       Debug.Log ("FingerCount is : " + fingerCount);
	    }


        if (Physics.Raycast(rayOrigin, out hitInfo, 20))
	    {
		   if (myDebug)
		   {
			Debug.Log("I see We hit ==> " + hitInfo.transform.name);
		   }

		   if(hitInfo.transform.tag == "Enemy")
		   {
		       if (myDebug)
		       {
			    Debug.Log("We hit the TARGET");
		       }   
				
		       Destroy(hitInfo.transform.gameObject); // can add time delay as second argument
		   }

	    } // END if raycast

	}  // END if (fingerCount > 0)

}`

I’ve not tested this. Let me know if it works.
Thanks.
P.S. Link to touch info in docs Unity - Scripting API: Input.GetTouch

3

assign this code to the main camera,and drag the game object to cubes variable.and tag the gameobject with “new” tag.Tested in android phone.

using UnityEngine;
using System.Collections;

public class touch : MonoBehaviour
{

public GameObject cubes;

// Use this for initialization
void Start () 
{

}

// Update is called once per frame
void Update () 
{
	if (Input.touchCount >0) 
	{
		RaycastHit hit;
		Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(0).position);
		if (Physics.Raycast(ray, out hit))
			if (hit.collider.gameObject.tag =="new")
		{
			Destroy(cubes);
			//cubes.rigidbody.AddForce(Vector3.forward * Time.deltaTime *500);
		
		}		
	}

}
}