//method for activating circle collider
private void Circle()
{
for (int i = 0; i < asteroids.Count; i++)
{
if (detect.CircleCollision(ship, asteroids[i]))
{
ship.GetComponent <SpriteRenderer>().color = Color.red;
asteroids[i].GetComponent <SpriteRenderer>().color = Color.red;
}
else
{
ship.GetComponent <SpriteRenderer>().color = Color.white;
asteroids[i].GetComponent <SpriteRenderer>().color = Color.white;
}
}
}