HELP cannot find error indexoutofrangeexeption

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1

IndexOutOfRangeException: Array index is out of range.
(wrapper managed-to-managed) object:ElementAddr_3_8 (object,int,int,int)
cant find this error

using UnityEngine;
using System.Collections;

public class Block
{
public int type;
public bool vis;

public Block(int t, bool v)
{
    type = t;
    vis = v;
}

}
public class GeneratedWorld : MonoBehaviour
{
public static int width = 64;
public static int depth = 64;
public static int height = 64;
public int heightScale = 20;
public float detailScale = 25.0f;

public GameObject grassBlock;
public GameObject sandBlock;
public GameObject snowBlock;

Block[,,] worldBlocks = new Block[width, height, depth];
// Use this for initialization
void Start ()
{
    int seed = (int) Network.time *  10;
    for (int z = 0; z <= depth; z++)
    {
        for (int x = 0; x <= width; x++)
        {
            int y = (int)(Mathf.PerlinNoise(x / detailScale, z / detailScale) * heightScale);
            Vector3 blockPos = new Vector3(x, y, z);

            CreateBlock(y, blockPos, true);
            while (y > 0)
            {
                y--;
                blockPos = new Vector3(x, y, z);
                CreateBlock(y, blockPos, false);
            }

        }
    }
}

void CreateBlock(int y, Vector3 blockPos, bool create)
{
    if (y > 15)
    {
        if (create)
        {
            Instantiate(snowBlock, blockPos, Quaternion.identity);
        }
        worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z] = new Block(1, create);

    }
    else if (y > 5)
    {
        if (create)
        {
            Instantiate(grassBlock, blockPos, Quaternion.identity);
        }
        worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z] = new Block(2, create);
    }
    else
    {
        if (create)
        {
            Instantiate(sandBlock, blockPos, Quaternion.identity);
        }
        worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z] = new Block(3, create);
    }
}

void DrawBlock(Vector3 blockPos)
{
    if (blockPos.x < 0 || blockPos.x >= width || blockPos.y < 0 || blockPos.y >= height || blockPos.z < 0 || blockPos.x >= depth) return;
    if (worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z] == null) return;

    if (!worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z].vis)
    {
        worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z].vis = true;
        if (worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z].type == 1)
        {
            Instantiate(snowBlock, blockPos, Quaternion.identity);
        }
        else if (worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z].type == 2)
        {
            Instantiate(grassBlock, blockPos, Quaternion.identity);
        }
        else if (worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z].type == 1)
        {
            Instantiate(sandBlock, blockPos, Quaternion.identity);
        }
        else
        {
            worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z].vis = true;
        }
    }
}
// Update is called once per frame
void Update ()
{
    if (Input.GetMouseButton(0))
    {
        RaycastHit hit;
        Ray ray = Camera.main.ScreenPointToRay(new Vector3(Screen.width / 2.0f, Screen.height / 2.0f, 0));
        if (Physics.Raycast(ray, out hit, 50.0f))
        {
            Vector3 blockPos = hit.transform.position;

            if ((int)blockPos.y == 0) return;
            {
                worldBlocks[(int)blockPos.x, (int)blockPos.y, (int)blockPos.z] = null;

                Destroy(hit.transform.gameObject);

                for (int x = -1; x <= 1; x++)
                {
                    for (int y = -1; y <= 1; y++)
                    {
                        for (int z = -1; z <= 1; z++)
                        {
                            if (!(x == 0 && y == 0 && z == 0))
                            {
                                Vector3 neighboor = new Vector3(blockPos.x + x, blockPos.y + y, blockPos.z + z);
                                DrawBlock(neighboor);
                            }
                        }
                    }
                }
            }
        }
    }
}

}

2

found it