【Unity】iTweenでハマったことメモ ref: http://qiita.com/shori0917/items/686404e0cc8a5d80146c

itween.cs

void OnTriggerStay(Collider other) {
    ins = Instantiate(PlusMoneyPrefab) as GameObject;

    Vector3 startPosition = new Vector3(startX, startY, -1);
    ins.transform.parent = Respawn.transform;
    ins.transform.localPosition = startPosition;
    ins.transform.localScale = new Vector3(50, 50, 0);

    Hashtable parameters = new Hashtable();
    parameters.Add("y", startY + 80);
    parameters.Add("islocal", true);
    parameters.Add("easeType", "easeInOutExpo");
    parameters.Add("time", 2);
    parameters.Add("oncomplete", "CompleteHandler");
    parameters.Add("oncompletetarget", gameObject);

    iTween.MoveTo(ins, parameters);
}

void CompleteHandler() {
    Destroy (ins);
}