WallBuilder

private GameObject WallBuilder(int x, int z, Transform parent)
    {
       // Debug.Log(x + " " + z);

        GameObject wall;
        float angle = 0f;

        bool corner = false;

        if (x == 0 && z == 0)                               // Bottom Left
        {
            corner = true;
            angle = 90;
        }
        else if (x == 0 && z == townSize - 1)               // Top Left
        {
            corner = true;
            angle = 180;
        }
        else if (x == townSize - 1 && z == 0)               // Bottom Right
        {
            corner = true;
            angle = 0;
        }
        else if (x == townSize - 1 && z == townSize - 1)    // Top Right
        {
            corner = true;
            angle = 270;
        }
        else if (x == 0 && z > 0)                           // Walls Left
        {
            corner = false;
            angle = 180;
        }
        else if (x == townSize -1 && z > townSize -1)       // Walls Right
        {
            corner = false;
            angle = 180;
        }
        else if (x > 0 && z == townSize -1)                 // Walls North
        {
            corner = false;
            angle = 270;
        }
        else if (x > 0 && z == 0)                           // Walls  South
        {
            corner = false;
            angle = 90;
        }

        // it's a corner
        if (corner)
        {
            wall = Instantiate(wallCorner[Random.Range(0, wallCorner.Length - 1)], parent);
            wall.transform.position = gridNodes[x, z];
            wall.transform.rotation = Quaternion.Euler(0, angle, 0);
        }
        else
        {
            wall = Instantiate(walls[Random.Range(0, walls.Length - 1)], parent);
            wall.transform.position = gridNodes[x, z];
            wall.transform.rotation = Quaternion.Euler(0, angle, 0);
            wall.name = wall.name + ":" + x +","+ z;
        }

        return wall;
    }