Spiral Terrain Generation

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

public class groundGeneration : MonoBehaviour {

    public GameObject objectGround;
    public Transform objectGroundPosition;

    private int numberGeneratorX = 0;
    private int numberGeneratorZ = 0;
    private int numberGeneratorY = 1;
    private int numberGeneratorRepeat = 1;

    void Start()
    {
        objectGround = Resources.Load<GameObject>("itemGround");


        GameObject createdGround = Instantiate(objectGround, new Vector3(objectGroundPosition.transform.position.x, objectGroundPosition.transform.position.y, objectGroundPosition.transform.position.z), Quaternion.identity);
        createdGround.gameObject.tag = "groundEmpty";
        createdGround.gameObject.name = "X 0 Z 0";
        createdGround.gameObject.layer = 8;
        createdGround.transform.parent = objectGroundPosition.transform;
        createdGround.AddComponent<objectSelection>();
    }

    void Update()
    {
        if (numberGeneratorY < 20)
        {
            GroundGenerationXup();
            GroundGenerationZup();
            GroundGenerationXdown();
            GroundGenerationZdown();
        }

    }

    void GroundGenerationXup()
    {
        while (numberGeneratorRepeat > 0)
        {
            numberGeneratorX++;
            GameObject createdGround = Instantiate(objectGround, new Vector3(objectGroundPosition.transform.position.x + numberGeneratorX, objectGroundPosition.transform.position.y, objectGroundPosition.transform.position.z + numberGeneratorZ), Quaternion.identity);
            createdGround.gameObject.tag = "groundEmpty";
            createdGround.gameObject.name = "X " + numberGeneratorX + " Z " + numberGeneratorZ;
            createdGround.gameObject.layer = 8;
            createdGround.transform.parent = objectGroundPosition.transform;
            createdGround.AddComponent<objectSelection>();

            numberGeneratorRepeat--;
        }
        numberGeneratorRepeat = numberGeneratorY;
    }

    void GroundGenerationZup()
    {
        while (numberGeneratorRepeat > 0)
        {
            numberGeneratorZ++;
            GameObject createdGround = Instantiate(objectGround, new Vector3(objectGroundPosition.transform.position.x + numberGeneratorX, objectGroundPosition.transform.position.y, objectGroundPosition.transform.position.z + numberGeneratorZ), Quaternion.identity);
            createdGround.gameObject.tag = "groundEmpty";
            createdGround.gameObject.name = "X " + numberGeneratorX + " Z " + numberGeneratorZ;
            createdGround.gameObject.layer = 8;
            createdGround.transform.parent = objectGroundPosition.transform;
            createdGround.AddComponent<objectSelection>();

            numberGeneratorRepeat--;
        }
        numberGeneratorY++;
        numberGeneratorRepeat = numberGeneratorY;
    }
     

    void GroundGenerationXdown()
    {
        while (numberGeneratorRepeat > 0)
        {
            numberGeneratorX--;
            GameObject createdGround = Instantiate(objectGround, new Vector3(objectGroundPosition.transform.position.x + numberGeneratorX, objectGroundPosition.transform.position.y, objectGroundPosition.transform.position.z + numberGeneratorZ), Quaternion.identity);
            createdGround.gameObject.tag = "groundEmpty";
            createdGround.gameObject.name = "X " + numberGeneratorX + " Z " + numberGeneratorZ;
            createdGround.gameObject.layer = 8;
            createdGround.transform.parent = objectGroundPosition.transform;
            createdGround.AddComponent<objectSelection>();

            numberGeneratorRepeat--;
        }
        numberGeneratorRepeat = numberGeneratorY;
    }

    void GroundGenerationZdown()
    {
        while (numberGeneratorRepeat > 0)
        {
            numberGeneratorZ--;
            GameObject createdGround = Instantiate(objectGround, new Vector3(objectGroundPosition.transform.position.x + numberGeneratorX, objectGroundPosition.transform.position.y, objectGroundPosition.transform.position.z + numberGeneratorZ), Quaternion.identity);
            createdGround.gameObject.tag = "groundEmpty";
            createdGround.gameObject.name = "X " + numberGeneratorX + " Z " + numberGeneratorZ;
            createdGround.gameObject.layer = 8;
            createdGround.transform.parent = objectGroundPosition.transform;
            createdGround.AddComponent<objectSelection>();

            numberGeneratorRepeat--;
        }
        numberGeneratorY++;
        numberGeneratorRepeat = numberGeneratorY;
    }
}