// Called everytime our object collides with a trigger collider
void OnTriggerEnter2D(Collider2D collider)
{
// We try to identify the object that collided with us as a projectile (laser beam).
Projectile missile = collider.gameObject.GetComponent <Projectile>();
AsteroidController asteroid = collider.gameObject.GetComponent <AsteroidController>();
// If our ship collided with a laser beam, we decrease our ship's health in the amount
// of damage set by the projectile. If the ship's health is zero or less, then we destroy
// our ship.
if (missile)
{
health -= missile.getDamage();
missile.Hit(); // The missile is destroyed upon collision with our ship.
if (health <= 0)
{
Die();
}
}
else if (asteroid)
{
health -= asteroid.getDamage();
asteroid.Crash();
if (health <= 0)
{
Die();
}
}
hpText.text = "HP : " + health;
}
