void OnCollisionEnter2D(Collision2D collisionInfo)
{
if (manager == null)
{
manager = gameObject.transform.parent.GetComponent <AsteroidManager>();
}
string name = collisionInfo.gameObject.name;
// Debug.Log("collide with " + name );
// explode on high impacts
float impactSpeed = collisionInfo.relativeVelocity.magnitude;
if (impactSpeed > 2)
{
float factor = 0.9f;
transform.localScale = factor * transform.localScale;
if (transform.localScale.x < 0.2f)
{
manager.RemoveAsteroid(gameObject);
}
}
// spawn dust with size proportional to impactSpeed at every contact point
for (int i = 0; i < collisionInfo.contactCount; i++)
{
Vector2 contact = collisionInfo.GetContact(i).point;
GameObject animObject = Instantiate(dust, new Vector3(contact.x, contact.y, 0f), Quaternion.identity);
animObject.transform.parent = gameObject.transform;
float scaleFactor = 0.4f;
animObject.transform.localScale = scaleFactor * impactSpeed * animObject.transform.localScale;
}
}