unity 随机生成物体方法

GameObject rty;
GameObject qwe;
bool flag = true;
private void OnTriggerEnter2D(Collider2D collision)
{
switch (collision.gameObject.tag)
{
case “123”:
if (hy)
{
hy = false;
Destroy(rty);
refreshSpecificFoodItem(qwe);
}
else
{
startFlag = false;
GetComponent().SetPositionAndRotation(new Vector3(-1f, -7f, 0), new Quaternion());
}
break;
case “Fm”:
if (hy) break;
rty= Instantiate(collision.gameObject, GetComponent().position + new Vector3(0.6f, 0.6f, 0), new Quaternion());
Destroy(rty.GetComponent());
collision.gameObject.SetActive(false);
rty.name = “1111”;
hy = true;
qwe= collision.gameObject;
break;

        case "pe":
          
            if (hy)
            {
                honeyCount++;
                hy = false;
                Vector3 homePos = new Vector3(
                    Random.Range(-0.1f, 0.1f),
                    Random.Range(-0.1f, 0.1f),
                    );
                Destroy(rty);
                refreshSpecificFoodItem(qwe);
            }
            break;
    }
}
private void es()
{
    foreach (GameObject foodItem in fs)
    {
        bool flag = true;
        while (flag)
        {
            // assign position
            foodItem.transform.position = new Vector3(UnityEngine.Random.Range(-1f, 1f), UnityEngine.Random.Range(-1f, 0f), 0);
            Collider2D[] ci = Physics2D.OverlapCircleAll(new Vector2(foodItem.transform.position.x,foodItem.transform.position.y), 4);
            if (ci.Length == 0)
            {
                flag = false;
            }
        }
        foodItem.SetActive(true);
    }
}

private void recm(GameObject Im)
{
    while (flag)
    {
   
        fm.transform.position = new Vector3(UnityEngine.Random.Range(-1f, 1f), UnityEngine.Random.Range(-1f, 1f), 0);
        Collider2D[] ci = Physics2D.OverlapCircleAll(new Vector2(foodItem.transform.position.x, foodItem.transform.position.y), 6);
        if (ci.Length == 0)
        {
            flag = false;
        }
    }
}
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