c# - 如何梳理一个RandomRangeInt在Unity中只能从主线程调用？

Question

我的目标是让生成的对象具有完全随机的颜色。我一直在问题标题中收到错误消息，我不知道自己在做什么，是对还是错。

using UnityEngine;
using System.Collections;

public class EnemySpawningScript : MonoBehaviour 
{
    public GameObject spawnType = null;
    public float ScaleMin = 0.5f;
    public float ScaleMax = 2.0f;
    public Color OriginalColorforSpawned = new Color(Random.Range(1,255), Random.Range(1,255), Random.Range(1, 255));

void Awake ()
{
    OriginalColorforSpawned = spawnType.GetComponent<Renderer>().sharedMaterial.color;
}

void Update ()
{
    if (Input.GetKey (KeyCode.Space)) 
    {
        GameObject BasicUnit = Instantiate(spawnType) as GameObject;
        BasicUnit.transform.position = this.transform.position;
        float ScaleOfEnemies = Random.Range (ScaleMin, ScaleMax);
        BasicUnit.transform.localScale = Vector3.one * ScaleOfEnemies;
        BasicUnit.AddComponent<Rigidbody>();

        BasicUnit.name = "ProtoTypeEnemies";
    }
}
}

Answer 1

将颜色初始化放入Awake 或Start。您不能在声明行中执行 Random.Range。

此外，您尝试在声明它时设置它，但在您的 Awake 中您直接覆盖了它。

编辑:
它应该看起来像这样:

public GameObject spawnType = null;
public float ScaleMin = 0.5f;
public float ScaleMax = 2.0f;
public Color OriginalColorforSpawned;

void Awake ()
{
    OriginalColorforSpawned = new Color(Random.Range(0.0f, 1.0f), Random.Range(0.0f, 1.0f), Random.Range(0.0f, 1.0f));

    spawnType.GetComponent<Renderer>().material.color = OriginalColorforSpawned;
}

编辑:
Color 取值从 0.0f 到 1.0f。

另外，推荐的变量命名是lowerCamelCase(例如originalColorForSpawned)。

编辑:
现在只影响新生成的对象:

using UnityEngine;
using System.Collections;

public class EnemySpawningScript : MonoBehaviour 
{
    public GameObject spawnType = null;
    public float scaleMin = 0.5f;
    public float scaleMax = 2.0f;

    void Update ()
    {
        if (Input.GetKey (KeyCode.Space)) 
        {
            GameObject basicUnit = Instantiate(spawnType) as GameObject;
            basicUnit.transform.position = transform.position;
            float scaleOfEnemies = Random.Range (scaleMin, scaleMax);
            basicUnit.transform.localScale = Vector3.one * scaleOfEnemies;

            // the rigidbody should just be added to the prefab directly
            basicUnit.AddComponent<Rigidbody>();

            basicUnit.name = "ProtoTypeEnemies";

            // change color of this enemy
            Color rColor = new Color(Random.Range(0.0f, 1.0f), Random.Range(0.0f, 1.0f), Random.Range(0.0f, 1.0f));
            basicUnit.GetComponent<Renderer>().material.color = rColor;
        }
    }
}