Player's projectile communicating with Enemy

EDIT: I take it from your script you're using JS. This script is JS, too, so it should work.

A good start would be to find out which object you are hitting. Like so:

hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);

This guy sends a message to the collider hit that it got damage - the "ApplyDamage" does that, assuming your bad guy has an "ApplyDamage" function. Next, it sends up the variable amount of damage. Finally, it says "if there's nobody to get this damage, then let it drift off to the big place in the sky" (SendMessageOptions.DontRequireReceiver). Now, if you don't have a function called "ApplyDamage", create one on your bad guy. It should look like this:

function ApplyDamage (damage : float) { // We already have less than 0 hitpoints, maybe we got killed already? if (hitPoints <= 0.0) return;

 hitPoints -= damage;
 if (hitPoints <= 0.0) {
     //Put your "if dead" script here:
 }

Then, put the "hit.collider" script on your bullet, and ApplyDamage on the enemy, and you should be set to go! Good luck! ;)

I suppose you have an Enemy component that stores the health? One way to achieve your goal would be to create a TakeDamage(float amount) method on your Enemy-component, and then on the Projectile component you can send a TakeDamage message to the collided object.

In C#:

public class Enemy : MonoBehaviour { public float Health;

 public void TakeDamage(float amount)
 {
     Health -= amount;
 }

 public void OnCollisionEnter(Collision collision)
 {
     collision.gameObject.SendMessage("TakeDamage", Damage);
 }