using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using AcknexWrapper;

namespace eventExample
{
    using AcknexWrapper.Native;
    using System.Runtime.InteropServices;

    public static class FinalBit
    {
        private static IntPtr GetPointerToFinalBit(BMAP bitmap)
        {
            return
                (IntPtr)(
                    (int)bitmap.getIntPtr() +
                    (int)Marshal.OffsetOf(typeof(NativeBMAP), "finalbits"));
        }

        public static IntPtr GetValue(BMAP bmap)
        {
            return
                Conversion.getIntPtrFromIntPtr(
                    FinalBit.GetPointerToFinalBit(bmap));
        }

        public static void SetValue(BMAP bmap, IntPtr value)
        {
            Conversion.setIntPtrFromIntPtr(
                FinalBit.GetPointerToFinalBit(bmap),
                value);
        }
    }

    class Program
    { 
        //the main method, called by the scheduler
        private static IEnumerable<ScheduleMethod> myMainMethod()
        {
            // limit frame rate
            EngVar.fps_max = 60;

            // load an empty level
            EngFun.level_load(null);

            yield return 1;

            BMAP bla =
                BMAP.bmap_createblack(300, 300, 32);

            // print current value
            Console.WriteLine(FinalBit.GetValue(bla));

            // change the finalbit to Zero and storing the current value
            IntPtr currentFinalBitValue =
                FinalBit.GetValue(bla);
            FinalBit.SetValue(bla, IntPtr.Zero);

            // print current value
            Console.WriteLine(FinalBit.GetValue(bla));

            // change the finalbit from Zero to the stored value
            FinalBit.SetValue(bla, currentFinalBitValue);

            // print current value
            Console.WriteLine(FinalBit.GetValue(bla));

            yield return ScheduleMethod.wait(1);
        }

        static void Main(string[] args)
        {
            //open the engine
            EngFun.engine_open(null, null);

            //start the scheduler
            Scheduler.StartScheduler(myMainMethod);
        }
    }
}