// 开始移动
private IEnumerator MoveCoroutine(int x, int y, float time)
{
sweet.X = x;
sweet.Y = y;
Vector2 startPos = sweet.transform.position;
Vector2 endPos = sweet.SetPos(x, y);
for (float t = 0; t < time; t += Time.deltaTime)
{
sweet.transform.position = Vector2.Lerp(startPos, endPos, t / time);
yield return(null);
}
// 纠正位置
sweet.transform.position = endPos;
StopCoroutine(moveIenumerator);
moveIenumerator = null;
}