using System;
using System.Diagnostics;


namespace SpaceInvaders
{
    public class Attract1 : Command
    {
        //-------------------------------------------------------------------
        //  FIELDS
        //-------------------------------------------------------------------

        Font pFont;
        Font pFont1;
        Font pFont2; 

        float delayTime;
        int curr;
        int i = 0;
        string message;

        Attract2 attract2;

        //-------------------------------------------------------------------
        //  CONSTRUCTION
        //-------------------------------------------------------------------

        public Attract1()
        {  }

        public Attract1(float delayTime)
        {
            this.delayTime = delayTime;
            FontMan.AddFont(Font.FontName.Attract_Title, Glyph.GlyphName.InvaderFont, SpriteBatch.BatchName.Text_Attract1, "INSERT  COIN", 260, 600, 3.9f, 4.4f, 1.35f);

            pFont = FontMan.AddFont(Font.FontName.Attract_PlayerSelect, Glyph.GlyphName.InvaderFont, SpriteBatch.BatchName.Text_Attract1, "", 200, 430, 3.9f, 4.4f, 1.35f);
            pFont1 = FontMan.AddFont(Font.FontName.Attract_Player1, Glyph.GlyphName.InvaderFont, SpriteBatch.BatchName.Text_Attract1, "", 200, 330, 3.9f, 4.4f, 1.35f);
            pFont2 = FontMan.AddFont(Font.FontName.Attract_Player2, Glyph.GlyphName.InvaderFont, SpriteBatch.BatchName.Text_Attract1, "", 200, 230, 3.9f, 4.4f, 1.35f, Sprite.pGreen);

            attract2 = new Attract2(delayTime);
        }


        //-------------------------------------------------------------------
        //  PUBLIC METHODS
        //-------------------------------------------------------------------

        public override void Execute(float deltaTime)
        {
            switch(curr)
            {
                case 0:
                    message = "<1 OR 2 PLAYERS>";
                    UpdateFont(pFont, message);
                    break;
                case 1:
                    message = "*1 PLAYER  1 COIN";
                    UpdateFont(pFont1, message);
                    break;
                case 2:
                    message = "*2 PLAYERS 2 COINS";
                    UpdateFont(pFont2, message);
                    break;
                case 3:
                    SpriteBatch pBatch = SpriteBatchMan.FindBatch(SpriteBatch.BatchName.Text_Attract1);
                    Debug.Assert(pBatch != null);
                    pBatch.SetToggle(false);

                    attract2.Reset();
                    SpriteBatch pBatch2 = SpriteBatchMan.FindBatch(SpriteBatch.BatchName.Text_Attract2);
                    Debug.Assert(pBatch2 != null);
                    pBatch2.SetToggle(true);
                    TimerEventMan.AddEvent(TimerEvent.EventName.Attract2, attract2, deltaTime + 1.5f);
                    break;

                default:
                    Debug.Assert(false);
                    break;
            }

            attract2.SetAttract1(this);
        }

        public void Reset()
        {
            pFont.UpdateMessage("");
            pFont1.UpdateMessage("");
            pFont2.UpdateMessage("");

            this.curr = 0;
            this.i = 0;
        }


        //-------------------------------------------------------------------
        //  PRIVATE METHODS
        //-------------------------------------------------------------------

        private void UpdateFont(Font font, string mssg)
        {
            Debug.Assert(font != null);
            Debug.Assert(mssg != null);

            string subMssg;
            if(this.i < mssg.Length)
            {
                subMssg = mssg.Substring(0, this.i + 1);
                font.UpdateMessage(subMssg);

                TimerEventMan.AddEvent(TimerEvent.EventName.Attract1, this, delayTime);
                i++;
            }
            else
            {
                curr++;
                i = 0;

                TimerEventMan.AddEvent(TimerEvent.EventName.Attract1, this, delayTime);
            }
        }


    } // end class

} // end namespace