Unityでパーリンノイズを使う

PerlinNoise.cs

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

public class PerlinNoise : MonoBehaviour
{
    public GameObject player;
    public GameObject parent;
    public GameObject grass;
    public GameObject stone;
    [SerializeField]
    int fieldSize = 50;
    [SerializeField, Range(0.03f,0.4f)]
    float scaler = 0.15f;

    //private float stoneChunk = 3;
    // Start is called before the first frame update
    private void Awake()
    {
        Application.targetFrameRate = 30;
    }

    void Start()
    {
        Vector3 p_position = player.transform.localPosition;
        setBlocks(p_position,fieldSize);
    }

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

    void setBlocks(Vector3 p,int size)
    {
        int s = size;
        for(var i = 0; i < s; i++)
        {
            for(var j = 0; j < s; j++)
            {
                //パーリンノイズ
                var noise = Mathf.PerlinNoise(i*scaler,j*scaler);
                var y_noise = (int)(noise * 10f);
                //Debug.Log((int)(noise*10f));

                Instantiate(grass, new Vector3(p.x - i, y_noise, p.z + j), Quaternion.identity);

                for(int y = y_noise-1; y >= 2; y--)
                {
                    Instantiate(stone, new Vector3(p.x - i, y, p.z + j), Quaternion.identity);
                }
            }
        }
    }
}