using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        PictureBox pic = new PictureBox();
        Timer timer1 = new Timer();
        List<List<MyObj>> Screen = new List<List<MyObj>>();
        const int BaseWidth = 640;
        const int BaseHeight = 480;
        const int BaseMargin = 50;
        //Size BaseSize = new Size(BaseWidth + BaseMargin * 2, BaseHeight + BaseMargin * 2);
        //ダブルバッファ
        Bitmap[] bmp = new Bitmap[2];
        //バッファ切り替え用
        int _ScreenBuff = 0;
        private void Form1_Load(object sender, EventArgs e)
        {
            this.SetStyle(ControlStyles.DoubleBuffer, true);
            this.SetStyle(ControlStyles.UserPaint, true);
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);

            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
            this.ClientSize = new Size(BaseWidth + 50 * 2, 480 + 50 * 2);
            pic.Dock = DockStyle.Fill;           
            this.Controls.Add(pic);

            //擬似的なダブルバッファ
            bmp[0] = new Bitmap(BaseWidth, BaseHeight, PixelFormat.Format32bppArgb);
            bmp[1] = new Bitmap(BaseWidth, BaseHeight, PixelFormat.Format32bppArgb);

            //オブジェクト追加
            //レイヤーとして管理
            for (int i = 0; i < 16; i++)
            {
                Screen.Add(new List<MyObj>());
            }
            //背景を追加
            Screen[0].Add( new MyObj(0,0, 0, 640, 480, -1, 0,
                new LinearGradientBrush(new Point(0, 0), new Point(639, 479), Color.YellowGreen, Color.Green)));
            Screen[0].Add( new MyObj(0,640, 0, 640, 480, -1, 0,
                new LinearGradientBrush(new Point(0, 0), new Point(639, 479), Color.Blue, Color.LightBlue)));

            //15fps
            timer1.Interval = (int)(1.0 / 60.0 * 100.0);
            timer1.Tick += new EventHandler(timer1_Tick);
            timer1.Enabled = true;
        }
        //ゲームループの代わり
        void timer1_Tick(object sender, EventArgs e)
        {
            //キー入力はチェックしない
            this.Key();

            //画面を構成するオブジェクトすべての移動処理
            this.ObjMove();

            //全部のオブジェクトの移動が終えた後当たり判定、消滅判定
            this.Hit();

            this.ObjDraw();
        }
        //キー入力
        void Key()
        {
        }
        //全キャラの動き
        void ObjMove()
        {
            for (int i = 0; i < Screen.Count; i++)
            {
                for (int j = 0; j < Screen[i].Count; j++)
                {
                    Screen[i][j].Move();
                }
            }
        }
        //当たり判定消滅判定
        void Hit()
        {
        }
        //全キャラの描画
        void ObjDraw()
        {
            using (Graphics g = Graphics.FromImage(bmp[_ScreenBuff]))
            //using (Graphics g = this.CreateGraphics())
            {
                g.FillRectangle(Brushes.Black, 0, 0, bmp[_ScreenBuff].Width, bmp[_ScreenBuff].Height);
                for (int i = 0; i < Screen.Count; i++)
                {
                    for (int j = 0; j < Screen[i].Count; j++)
                    {
                        Screen[i][j].Draw(g);
                    }
                }
            }
            pic.Image = bmp[_ScreenBuff];
            this.Invalidate();
            _ScreenBuff ^= 1;
        }
    }
    public class MyObj
    {
        int _MoveType;
        int _Count;
        float _X;
        float _Y;
        float _Width;
        float _Height;
        float _AddX;
        float _AddY;
        LinearGradientBrush _Brush;
        public MyObj(int MoveType,
            float X, float Y,
            float Width, float Height,
            float AddX, float AddY,
            LinearGradientBrush Brush)
        {
            _MoveType = MoveType;
            _Count = 0;
            _X = X;
            _Y = Y;
            _Width = Width;
            _Height = Height;
            _AddX = AddX;
            _AddY = AddY;
            _Brush = Brush;
        }
        public void Move()
        {
            switch (_MoveType)
            {
                case 0:
                    _X += _AddX;
                    _Y += _AddY;
                    break;
                case 1:
                    break;
                case 2:
                    break;
                default:
                    break;
            }
            _Count++;
            
        }
        public void Draw(Graphics g)
        {
            g.FillRectangle(_Brush, _X, _Y, _Width, _Height);
        }
    }
}