Unity柏林噪音（Perlin Noise）的一点应用

使用时注意的几点：

1. 乘以unkownCoef之后（如我默认是0.05f，就把 j = 1，2，3变成 j = 0.05，0.10, 0.15...） 这样perlin（）的 j 参数之间差别的就不大，k参数同理，这样就比较丝滑）

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BerlinNoiseTest : MonoBehaviour
{
    public GameObject obj;
    List cubes = new List();
    // Start is called before the first frame update
    void Start()
    {
        for (int i = 0; i < 20; i++)
        {
            for (int j = 0; j < 20; j++)
            {
                GameObject o = Instantiate(obj);
                o.transform.position = Vector3.zero;
                o.transform.position = new Vector3(i, 0, j);
                cubes.Add(o);


            }
        }

    }

    public float offSet = 1;
    [SerializeField]
    float timer = 0;
    public float unkownCoef = 0.05f;
    void Update()
    {
        timer += Time.deltaTime;
        for (int i = 0; i < cubes.Count; i++)
        {
            float j = i % 20;
            float k = i / 20;
            float yPos = 5 * Mathf.PerlinNoise(j * unkownCoef + timer * offSet, k * unkownCoef + timer * offSet);
            cubes[i].transform.position = new Vector3(cubes[i].transform.position.x, yPos, cubes[i].transform.position.z);
        }
    }
}