Unity - 如何使原始对象不会重叠？

Question

因此，无论何时按下按钮，我都会制作一个测试游戏，它会从工厂类创建一个类对象。我希望每当我生成一个对象时都这样做，它不会重叠其他对象。此外，我想在每次产卵时将球体和光对象保持在一起。你能帮我弄明白怎么做吗？

public class Sphere : Shape
{

    public Sphere()
    {
        float speed = 10f;

        GameObject sphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
        sphere.transform.position = new Vector3(0, 0, 0);
        sphere.GetComponent<MeshRenderer>().material.color = Random.ColorHSV();
        sphere.transform.Rotate(Vector3.up, speed * Time.deltaTime);
        Destroy(sphere, 30.0f);

        GameObject lightGameObject = new GameObject("Light");
        Light lightComp = lightGameObject.AddComponent<Light>();
        lightComp.color = Random.ColorHSV();
        lightGameObject.transform.position = new Vector3(0, 0, 0);
        lightGameObject.transform.Rotate(Vector3.up, speed * Time.deltaTime);
        Destroy(lightComp, 30.0f);
    }
}