private IEnumerator ambulance()
{
Ambulance s = new Ambulance(new Rect(SCREEN_SIZE.x + 100, SCREEN_SIZE.y - ambulanceSize, ambulanceSize, ambulanceSize), ambulances[Random.Range(0, ambulances.Length)], ambulancesPerSheet, ambulanceSize);
ambulance_list.Add(s);
float delta = 0.0f;
while (delta < ambulanceDuration)
{
delta += Time.deltaTime;
s.rect.x = (1 - ambulanceSpeedCurve.Evaluate(delta / ambulanceDuration)) * (SCREEN_SIZE.x + ambulanceSize) - ambulanceSize;
s.rect.y = ambulanceHopCurve.Evaluate(delta / ambulanceDuration) * ambulanceSize + SCREEN_SIZE.y - ambulanceSize;
yield return(null);
}
s.die();
}
