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

using AcknexWrapper;
using System.Collections;

namespace game
{
    class Program
    {
        static IEnumerable mouse()
        {
            BMAP arrow = EngFun.bmap_create("mouse.bmp");
            EngVar.mouse_map = arrow;
            EngVar.mouse_mode.IntValue = 2;

            while (true)
            {
                EngVar.mouse_pos.x.FloatValue = EngVar.mouse_cursor.x.FloatValue;
                EngVar.mouse_pos.y.FloatValue = EngVar.mouse_cursor.y.FloatValue;
                yield return 1;
            }
        }

        public static IEnumerable DragPanel()
        {
            Console.WriteLine("i was called !");

            PANEL sender = EngVar.mouse_panel;
            int startx = EngVar.mouse_cursor.x.IntValue - sender.pos_x.IntValue;
            int starty = EngVar.mouse_cursor.y.IntValue - sender.pos_y.IntValue;

            while (EngVar.mouse_left.IntValue == 1)
            {
                if (EngVar.mouse_moving.IntValue == 1)
                {
                    sender.pos_x.IntValue = EngVar.mouse_cursor.x.IntValue - startx;
                    sender.pos_y.IntValue = EngVar.mouse_cursor.y.IntValue - starty;
                }
                yield return 1;
            }
        }

        static IEnumerable MainMethod()
        {
            PANEL pnl = EngFun.pan_create("bmap = mouse.bmp;", (Var)1);
            pnl.pos_x.IntValue = 0;
            pnl.pos_y.IntValue = 0;
            pnl.event_ = DragPanel;
            pnl.SHOW = true;
            yield return 1;
        }

        static void Main(string[] args)
        {
            EngFun.engine_open(null);
            Scheduler.AddEventVoid(mouse);
            Scheduler.StartScheduler(MainMethod);
        }
    }
}