ReelSymbolObject:

using UnityEngine;
using System.Collections;

public class ReelSymbolObject
{
    public int symbol_id;
    public int win_anim_id;
    public float[] current_pos;
    public float[] default_pos;
    public float current_pos_x;
    public float current_pos_y;
    public float current_pos_z;
    public float default_pos_x;
    public float default_pos_y;
    public float default_pos_z;
    public float rot_inc;
    public float rez_inc;
    public int curr_dir;
    public float curr_rot;
    public float units_spun;
    public float elapsed_time_2d;

    public ReelSymbolObject()
    {
        symbol_id = -1;
        win_anim_id = -1;
        current_pos = new float[3] { 0, 0, 0 };
        default_pos = new float[3] { 0, 0, 0 };
        rot_inc = 0;
        rez_inc = 0;
        curr_dir = ReelScene.SPIN_DIR_DOWN;
        curr_rot = 0;
        units_spun = 0;
        elapsed_time_2d = 0;
    }
}

ReelSymbolGroup:

using UnityEngine;
using System.Collections;

public class ReelSymbolGroup
{
    public int group_id;
    public int next_group_id;
    public int syms_per_second;
    public int num_syms_to_spin;
    public float spin_time;
    public float spin_start_time;
    public float prev_time;
    public float interval_units;
    public int spin_direction;
    public ReelScene.SPIN_STATE spin_state;
    public int nonwin_anim_id;
    public int win_anim_id;
    public ReelSymbolObject[] symbols;

    public ReelSymbolGroup()
    {
        group_id = -1;
        next_group_id = -1;
        syms_per_second = 0;
        num_syms_to_spin = 0;
        spin_time = 0;
        spin_start_time = 0;
        prev_time = 0;
        interval_units = 0;
        spin_direction = ReelScene.SPIN_DIR_DOWN;
        spin_state = ReelScene.SPIN_STATE.SPIN_NOT_STARTED;
        nonwin_anim_id = -1;
        win_anim_id = -1;
        symbols = new ReelSymbolObject[7];
        for (int i = 0; i < 7; i++)
            symbols[i] = new ReelSymbolObject();
    }
}

Code to initialise data:

    private ReelSymbolGroup[] m_reelSymbolGroup;
    private ReelSymbolObject[] m_reelVisibleSymbols;
    private ReelSymbolManager m_reelSymbolManager;
    private GameHud m_gameHud;

    static public ReelScene getInstance()
    {
        if (_instance == null)
        {
            _instance = new ReelScene();
        }
        return _instance;
    }

    public ReelSymbolGroup[] SymbolGroup
    {
        get { return m_reelSymbolGroup; }
    }

    public ReelSymbolObject[] VisibleSymbols
    {
        get { return m_reelVisibleSymbols; }
    }

    public ReelScene()
    {
        // Construct symbol group and visible data
        m_reelSymbolGroup = new ReelSymbolGroup[5];
        for (int i = 0; i < 5; i++)
            m_reelSymbolGroup[i] = new ReelSymbolGroup();
        m_reelVisibleSymbols = new ReelSymbolObject[1024];
        for (int i = 0; i < 1024; i++)
            m_reelVisibleSymbols[i] = new ReelSymbolObject();

        m_gameHud = new GameHud();
    }