//enemy collider events
void OnTriggerEnter2D(Collider2D coll)
{
Missile missile = coll.gameObject.GetComponent <Missile>();
//if enemy is hit by player missile
if (missile)
{
//reduce enemy health by missile damage, if health after his is lower or equal than 0 destroy enemy
health -= missile.getDamage();
missile.Hit();
if (health <= 0)
{
scoreKeeper.Score(pointValue);
Destroy(gameObject);
}
}
}