Collision with player bullet

Questions & Answers
1

I’m working on the script for the enemies in the game.
Thus far, they fly towards the player once spawned and that’s pretty much it.

What I want to happen is firstly, for the enemy plane to lose health once hit by a players bullet. Then, once the enemy has zero healt, I want to turn on gravity, to make the enemy crash into the ground. And once they crash into the ground, I want the enemy to disappear.

The problem I’m having right now is that it doesen’t seem to register the collision. I’ve given the bullets the correct tag, but still nothing: the bullets pass straight through the enemy plane, even when I give the bullets ridiculously big hitboxes. And yes, I have paused the game and verified that the hitboxes in fact have collided.

Here’s my current enemy code

using UnityEngine;
using System.Collections;


public class EnemyFighterScript : MonoBehaviour {
	public float interceptvelocity = 10.0f ;
	private Transform Player;
	float distance;
	private Transform Disengage;
	public float disengagedistance;
	public bool disengage;
	public float timer;
	public float health;
	// Use this for initialization
	void Start () {
		disengage = false;
		GameObject go = GameObject.Find ("Player") as GameObject;
		Player = go.transform;

		GameObject dis = GameObject.Find ("disengager") as GameObject;
		Disengage = dis.transform;
	}

	void OnColliderHit(Collider collision)
	{
		if(collision.transform.tag == "Ground")
		{
			
			DestroyObject(collision.gameObject);
		}
		if(collision.transform.tag == "PlayerProjectile")
		{
			Debug.Log("Iz ded");
		}
	}

	// Update is called once per frame
	void Update () {
		distance =Vector3.Distance(transform.position,Player.position);
	
		if (health<0){
		//	Rigidbody.useGravity = true;
		}
		if (distance<disengagedistance){
			disengage=true;
		}
		if (disengage==false){
			transform.LookAt (Player);
			transform.position += transform.forward * interceptvelocity * Time.deltaTime;
		}
		if (disengage==true) {
			//makes enemy fly away and prepare self destruct after reaching proximity to player
			transform.LookAt (Disengage);
			transform.position += transform.forward * interceptvelocity * Time.deltaTime;
			timer =- Time.deltaTime;
			
		}
		if(timer <= 1){
			//destroys NPC once it passes player
			Destroy(gameObject);
		}
	}
}

Worth mentioning is that I’ve also had problems with the gravity code, as it just keeps on giving me error messages when I try to implement it.

2

I wouldn’t really bother using collisions to test if bullets are hitting an object. Why not ray trace? Check if the collider of your enemy is collected in the ray trace and there you are!