如何随机生成对象？

Question

我正在尝试创建一个随机生成对象的脚本，不幸的是我的脚本运行得不是很好。你能帮我随机化游戏对象生成之间的时间吗？谢谢！

#pragma strict

var SpawnObject : GameObject;
var SpawnPoint : GameObject;

var SpawnCounter : int = 0;
var SpawnCounterMinMax : int =0;
var SpawnCounterMaxMax : int =0;


function Update () 
{
    var float_min_bother_I_hate_you_js : float = this.SpawnCounterMinMax;
    var float_max_bother_I_hate_you_js : float = this.SpawnCounterMaxMax;
    var SpawnCounterMax = Random.Range(float_min_bother_I_hate_you_js, float_max_bother_I_hate_you_js);
    this.SpawnCounter++;
    if (this.SpawnCounter >= SpawnCounterMax )
    {
        Instantiate(this.SpawnObject, this.SpawnPoint.transform.position, this.SpawnPoint.transform.rotation );
        this.SpawnCounter = 0;
        SpawnCounterMax = Random.Range(float_min_bother_I_hate_you_js, float_max_bother_I_hate_you_js);
    }

}

Answer 1

如果您希望能够指定一个 min/max 随机时间范围，这样的事情应该可行：

 #pragma strict

var SpawnObject : GameObject;
var SpawnPoint : GameObject;

var NextSpawnTime : float = 0;
var MinSpawnTime : float =0;
var MaxSpawnTime : float =0;

function SetTimer()
{
    this.NextSpawnTime = Random.Range(this.MinSpawnTime, this.MaxSpawnTime);
}

function Start ()
{
    //initialise the spawn counter at startup
    this.SetTimer();
}

function Update () 
{
    this.NextSpawnTime -= Time.deltaTime;
    if(this.NextSpawnTime <= 0)
    {
          Instantiate(this.SpawnObject, this.SpawnPoint.transform.position, this.SpawnPoint.transform.rotation );
          this.SetTimer();
    }    
}

使用 Time.deltaTime 递减一个以秒为单位存储一些值的计时器，确保无论帧速率如何，您的生成都发生在给定范围内。

进一步阐明为什么您可能会在代码中看到不需要的行为。您在每次更新时重新随机化 SpawnCounter 的最大值，而不是在每次生成对象时设置一次。

Answer 2

你可以使用协程来实现这个，像这样就可以了。

int numberOfObjectsToCreate = 5; // number of objects you want to spawn.
float minTimeDiff = 1.0f; // minimum time difference between 2 objects spawned.
float maxTimeDiff = 5.0f; // Maximam time difference between 2 spawns.

public GameObject ObjectToSpawn; // object that is to be spawned;

void Start() {
    StartCoroutine(CreateObjectsAtRandom());
}

IEnumerator CreateObjectsAtRandom() {
        for(int i = 0; i < numberOfObjectsToCreate; i++) {
            GameObject obj = Instantiate(ObjectToSpawn, Vector3.zero, Quarternion.identity) as GameObject;
            yield return new WaitForSeconds(Random.Range(minTimeDiff, maxTimeDiff)); // wait for a random time before spawning the next object.
        }
}

如何随机生成对象？

How to spawn objects at random times?

random

scripting

unity3d

unityscript