Perlin noise keeps generating the same hills and random plateaus

Unity Engine
,
1

I apologize if this makes you slap your face in agony (im very new to C# and Unity). I’ve recently started a basic terrain generator however the output I get from the Mathf.PerlinNoise function (when used to instantiate my grass block) keeps making the exact same hills in a random order and then cutting to a plateau. I’ve given it a seed and allows it to randomly generate however the output always involves the same noise/shapes.

My Code:

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

public class generator : MonoBehaviour
{
    public GameObject Dirt;

    void Start()
    {
        int width = 1000;

        long seed = seedGen(); // generate random seed
        generate(width, height, seed); // generate terrain
    }

    private void generate(int width, int height, long seed)
    {
        float t = 0;

        for (int x = 0; x <= width; x++)
        {
            float noise = Mathf.PerlinNoise(t + seed, seed);
            noise = Mathf.Round(noise * 100);

            Instantiate(Grass, new Vector2(x, noise), Quaternion.identity);

            t += (float)0.01;
         
        }
    }

    public int seedGen()
    {
        int seed = Random.Range(0, 10000);
        return seed;
    }
}

Plateau:

Similar or Identical Generation:


My goal is to develop generation similar to Terraria’s however I can’t find enough documentation or talk of this without completely developing a custom perlin noise function (something I can’t for the life of me understand). How am I able to alter this code to generate better terrain using Mathf.PerlinNoise?

2

Where is your height variable? I see you passing it but I don’t see the variable. Could this be your problem?