Random.InitState

Parameters

Description

使用种子初始化随机数生成器状态。

随机数生成器并非真正随机，而是采用预设序列生成数字（对大多数用途而言，序列中的值表现为以看似随机的方式围绕范围“跳动”）。

序列开始生成一串特定伪随机值的点选自一个称为种子 值的整数。在使用随机数函数之前，种子通常是通过某个任意值（如系统时钟）进行设置的。这可防止在每次玩游戏时出现相同的一串值，从而避免可预测的游戏玩法。但是，有时通过自己设置种子，按照需要生成相同的一串伪随机值会十分有用。

You might set your own seed, for example, when you generate a game level procedurally. You can use randomly-chosen elements to make the Scene look arbitrary and natural but set the seed to a preset value before generating. This will make sure that the same "random" pattern is produced each time the game is played. This can often be an effective way to reduce a game's storage requirements - you can generate as many levels as you like procedurally and store each one using nothing more than an integer seed value.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    private float[] noiseValues;
    void Start()
    {
        Random.InitState(42);
        noiseValues = new float[10];
        for (int i = 0; i < noiseValues.Length; i++)
        {
            noiseValues[i] = Random.value;
            Debug.Log(noiseValues[i]);
        }
    }
}