C# 如何随机化对象'；什么位置？

这是一些实例化两种不同类型的预置并将它们放置在随机点的代码。预设会实例化，但不会随机实例化。我怎样才能解决这个问题

using UnityEngine;
using System.Collections;

public class Spawner : MonoBehaviour {
// Use this for initialization
    void Start () {
        InvokeRepeating ("SpawnAThing", 3.0f, 3.0f);
    }

// Update is called once per frame
    void Update () {

    }
    void SpawnAThing(){
        GameObject x=null;
        int z = Random.Range (0, 2);
        switch (z) {
        case 0:
            x = (GameObject)Instantiate(Resources.Load("BadCircle"));;
            break;
        case 1:
            x = (GameObject)Instantiate(Resources.Load("GoodCircle"));
            break;
        }
        x.transform.position.Set (Random.Range (-Screen.width, Screen.width), Random.Range (-Screen.height, Screen.height), 0.0f);
    }
}

---

由于使用了

transform.position.Set（）

position.Set（）

无法修改该位置，因为它不返回该位置的引用。它返回一个副本

使用

x.transform.position=new Vector3（x，y，z）直接修改变换

所以你所要做的就是更换

x.transform.position.Set (Random.Range (-Screen.width, Screen.width), Random.Range (-Screen.height, Screen.height), 0.0f);

与

编辑：

您现在无法看到它，因为
Screen.width
和
Screen.height
离屏幕太远了。您必须使用
Camera.main.ViewportToWorldPoint
将视图转换为世界点，然后您可以使用0转换为1来表示以.5为中间点的屏幕。
如果你看不到它，减少15，这是传递到Z轴

  x.transform.position = Camera.main.ViewportToWorldPoint(new Vector3(Random.Range(0f, 1f), Random.Range(0f, 1f), Camera.main.nearClipPlane + 15f));

创建游戏对象并将其重命名为“SpawnController”，然后附加此脚本：

 using UnityEngine;

    public class SpawnController : MonoBehaviour {

        //Set at inspector new Min and Max X axis Range.
        public float maxWidth;
        public float minWidth;

        //Set at inspector new Min and Max Y axis Range
        public float maxHeight;
        public float minHeight;

        //Set at inspector new Min and Max Z axis Range (3D game)
        public float maxDepth;
        public float minDepth;

        //Set the time at inspector you want the object to be created eg: every 10 seconds
        public float rateSpawn;

        private float currentRateSpawn;

        // Drag to inspector your gameObject what you want instatiate
        public GameObject gameObject;

        void Update () {

            currentRateSpawn += Time.deltaTime;
            if (currentRateSpawn > rateSpawn) {
                currentRateSpawn = 0;
                Spawn ();
            }
        }

        private void Spawn() {


            //Define new (Min and Max) range values for the Vector3 AXIS
            float randWitdh = Random.Range(minWidth, maxWidth);
            float randHeight = Random.Range(minHeight, maxHeight);
            float randDepth = Random.Range(minDepth, maxDepth);

            //Vector3 now has a new random range value
            Vector3 random =  new Vector3(randWitdh, randHeight, randDepth ); 

            //Object will dynamically instantiate according to the values established in the inspector
            Instantiate (gameObject, random, Quaternion.identity);
        }
    }

@火山活动它根本不起作用，因为这是改变变换的权利。您看不到对象的原因是您的随机数不在视图/屏幕中。您可以通过运行程序来证明这一点，从实例化对象中选择一个，转到“场景视图”并按F键。您将在另一个随机位置找到它。你的位置不在屏幕上。这是3D还是2D对象？从未使用过unity（这意味着我可能有点偏离基准），但-width和+width之间的一个随机数似乎有一半的时间都不会出现在屏幕上。再加上它的高度，屏幕上就会有三分之四的时间显示出来。它是否应该是
（0，宽度）
和类似的
（0，高度）
？我意识到这是OP提供的原始定义，但这可能是导致此解决方案的代码无效的原因。@Rob是的，您是正确的。这东西从屏幕上消失了。不仅仅是因为他使用了
-
，还因为他使用了价值观。我尝试了
（0，宽度）
，但它仍然不在屏幕上。在Unity中，将视图转换为世界点，然后可以使用0到1的值显示屏幕
.5
是中间点。看一下我的编辑，看看我在说什么。@Volcanictan的答案被修改了，这样你就可以真正看到这个对象了。
 using UnityEngine;

    public class SpawnController : MonoBehaviour {

        //Set at inspector new Min and Max X axis Range.
        public float maxWidth;
        public float minWidth;

        //Set at inspector new Min and Max Y axis Range
        public float maxHeight;
        public float minHeight;

        //Set at inspector new Min and Max Z axis Range (3D game)
        public float maxDepth;
        public float minDepth;

        //Set the time at inspector you want the object to be created eg: every 10 seconds
        public float rateSpawn;

        private float currentRateSpawn;

        // Drag to inspector your gameObject what you want instatiate
        public GameObject gameObject;

        void Update () {

            currentRateSpawn += Time.deltaTime;
            if (currentRateSpawn > rateSpawn) {
                currentRateSpawn = 0;
                Spawn ();
            }
        }

        private void Spawn() {


            //Define new (Min and Max) range values for the Vector3 AXIS
            float randWitdh = Random.Range(minWidth, maxWidth);
            float randHeight = Random.Range(minHeight, maxHeight);
            float randDepth = Random.Range(minDepth, maxDepth);

            //Vector3 now has a new random range value
            Vector3 random =  new Vector3(randWitdh, randHeight, randDepth ); 

            //Object will dynamically instantiate according to the values established in the inspector
            Instantiate (gameObject, random, Quaternion.identity);
        }
    }