TerrainGeneratorCourseApied.cs

using UnityEngine;

public class TerrainGeneratorCourseApied : MonoBehaviour
{
    public int depth = 20;

    public int width = 256;
    public int height = 256;

    public float scale = 20f;

    public float offsetX = 100f;
    public float offsetY = 100f;

    void Start()
    {
        offsetX = Random.Range(0f, 9999f);
        offsetY = Random.Range(0f, 9999f);
    }

    void Update()
    {
        Terrain terrain = GetComponent<Terrain>();
        terrain.terrainData = GenerateTerrain(terrain.terrainData);
    }
    TerrainData GenerateTerrain(TerrainData terrainData)
        {
            terrainData.heightmapResolution = width + 1;

            terrainData.size = new Vector3(width, depth, height);

            terrainData.SetHeights(0, 0, GenerateHeights());

            offsetX += Time.deltaTime * 5f;

        return terrainData;
        }

        float[,] GenerateHeights()
        {
            float[,] heights = new float[width, height];
            for (int x = 0; x < width; x++)
            {
                for (int y = 0; y < height; y ++)
                {
                    heights[x, y] = CalculateHeight(x, y);
                }
            }

            return heights;
        }
        float CalculateHeight(int x, int y)
        {
            float xCoord = (float)x / width * scale + offsetX;
            float yCoord = (float)y / height * scale + offsetY;

            return Mathf.PerlinNoise(xCoord, yCoord);
        }
}