how to destroy game objects with a raycast and health?

Questions & Answers
1

Hello everyone. I am having trouble destroying a gameobject with health throught a raycast. I can destroy the game object directly after a touch. But I want the gameobject to have health. How can I lower the health from the game object throught a raycast? Here is the code to clarify:

public class RaycastTest : MonoBehaviour {

    private Ray ray;
    private RaycastHit hit;
    private EnemyHealth EnemyHealthScript;
	// Use this for initialization
	void Start () {
        EnemyHealthScript = (EnemyHealth)FindObjectOfType(typeof(EnemyHealth));
	}
	
	// Update is called once per frame
	void Update () {

        if (Input.touchCount > 0)
        {
            ray = Camera.main.ScreenPointToRay(Input.GetTouch(0).position);
            if (Physics.Raycast(ray, out hit))
            {
                if (hit.collider.tag == "Enemy")
                {
                    EnemyHealthScript.LowerHealth();
                }

The: EnemyHleathScript.LowerHealth() is giving me trouble and giving me a NullReferenceExepction. Here is the enemy health script:

public class EnemyHealth : MonoBehaviour {

	public int Health = 100;

	// Use this for initialization
    void Start()
    {
        Destroy(this.gameObject, 23);
    }
	// Update is called once per frame
	void Update () {

        if(Health <=0){
            Destroy(this.gameObject);
        }	
	}
   public void LowerHealth()
    {
        Health -= 50;
    }

Cheers and thanks in advance!

2

You can use SendMessage for this:

…

if (hit.collider.tag == "Enemy")
                {
                    hit.collider.SendMessage("LowerHealth");
                }