using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

namespace ping_pong
{
       class graphics:window
       {
           //Для прорисовки
           Bitmap btm=new Bitmap(832,768,System.Drawing.Imaging.PixelFormat.Format24bppRgb);
           int screen;
           //Счет
           public int player1_s= 0;
           public int player2_s = 0;
           //Позиция игроков
           int player1_x=64;
           int player1_y=64;
           int player2_x=704;
           int player2_y=64;
           int n = 64;
           //Позиция шарика
           public int ball_x = 384;
           public int ball_y = 384;
           //Позиция движения
           public char where = '+';
           public char where_up = '=';
           //Основная функция
           public void render(Graphics g)
           {
                   map(g);
                   ball(g);
                   player1(g);
                   player2(g);
                   score(g);
                   if (screen == 1)
                   {
                       btm.Save("screenshot.bmp", System.Drawing.Imaging.ImageFormat.Bmp);
                       screen = 0;
                   }
                   g.DrawImage(btm, 0, 0, 768, 768);
                   Thread.Sleep(1000/800);
           }
           //Игрок 1
           void player1(Graphics g)
           {
               using (g = Graphics.FromImage(btm))
               {
                   SolidBrush brush = new SolidBrush(Color.Red);
                   g.FillRectangle(brush, new Rectangle(player1_x, player1_y, n, 256));
               }
           }
           //Игрок 2
           void player2(Graphics g)
           {
               using (g = Graphics.FromImage(btm))
               {
                   SolidBrush brush = new SolidBrush(Color.Green);
                   g.FillRectangle(brush, new Rectangle(player2_x, player2_y, n, 256));
               }
           }
           //Карта
           void map(Graphics g)
           {

        
               using (g = Graphics.FromImage(btm))
               {
                   SolidBrush brush = new SolidBrush(Color.Black);
                   g.FillRectangle(brush, new Rectangle(0, 0, 768, 768));
                   brush = new SolidBrush(Color.Blue);
                   g.FillRectangle(brush, new Rectangle(0, 0, 832, 64));
                   g.FillRectangle(brush, new Rectangle(0, 0, 64, 768));
                   g.FillRectangle(brush, new Rectangle(0, 704, 832, 64));
                   g.FillRectangle(brush, new Rectangle(768, 0, 64, 768));
                   g.DrawLine(new Pen(new SolidBrush(Color.White), 3), new Point(416, 64), new Point(416, 704));
                   g.DrawLine(new Pen(new SolidBrush(Color.Yellow), 2), new Point(64, 64), new Point(64, 704));
                   g.DrawLine(new Pen(new SolidBrush(Color.Yellow), 2), new Point(768, 64), new Point(768, 704));
               }
                  
           }
           //Мячик
           void ball(Graphics g)
           {
               using (g = Graphics.FromImage(btm))
               {
                   g.FillEllipse(Brushes.Yellow, ball_x, ball_y, 64, 64);
               }
           }
           //Счет
           void score(Graphics g)
           {
               using (g = Graphics.FromImage(btm))
               {
                   string s;
                   s = "СЧЕТ:" + Convert.ToString(player1_s) + "-" + Convert.ToString(player2_s);
                   g.DrawString(s, new Font("Arial", 18), new SolidBrush(Color.Yellow), new PointF((float)10, (float)30));
               }
           }
           //Управление
           public void movements(Graphics g, PreviewKeyDownEventArgs e)
           {
               //Первый игрок
               if (e.KeyCode == Keys.W)
               {
                   if (player1_y != 64)
                   {
                       player1_y -= 32;
                   }
               }
               if (e.KeyCode == Keys.S)
               {
                   if (player1_y != 448)
                   {
                       player1_y += 32;
                   }
               }
               //Второй игрок
               if (e.KeyCode == Keys.Up)
               {
                   if (player2_y != 64)
                   {
                       player2_y -= 32;
                   }
               }
               if (e.KeyCode == Keys.Down)
               {
                   if (player2_y != 448)
                   {
                       player2_y += 32;
                   }
               }
               //скриншот
               if (e.KeyCode == Keys.F12)
               {
                     
                   //Скриншот
                   screen = 1;    
               }
           }
           //Перемещение шарика
           public void ball_move(Graphics g)
           {

                   //Проверка счета
                   if (ball_x == 64)  player2_s++;
                   if (ball_x == 704) player1_s++;
                   //Проверка столкновения с игроком
                   if (collision()){
                       if (where == '+') { where = '-'; get_updown(); }
                       else { where = '+'; get_updown(); }
                   }
                   //Проверка на Y
                   if (where_up == '-')
                   {
                       if (ball_y != 64) ball_y -= 16;
                       else
                       {
                           where_up = '+';
                           ball_y += 16;
                       }
                   }
                   if (where_up == '+')
                   {
                       if (ball_y != 640) ball_y += 16;
                       else
                       {
                           where_up = '-';
                           ball_y -= 16;
                       }
                   }
                   //По X
                   if (where == '+')
                   {
                       if (ball_x != 704) ball_x += 16;
                       else { where = '-'; get_updown(); }
                   }
                   if (where == '-')
                   {
                       if (ball_x != 64) ball_x -= 16;
                       else { where = '+'; ball_x += 16; get_updown(); }
                   }
               }

           //Столкновение
           public  bool collision()
           {
               if(((ball_x<=player1_x+n)&&(ball_y+32>=player1_y)&&(ball_y+32<=player1_y+256))||((ball_x>=player2_x-n)&&(ball_y+32>=player2_y)&&(ball_y+32<=player2_y+256)))
               return true;
               else
               return false;
           }

           //Новая игра
           public void reset()
           {
               player1_s = 0;
               player2_s = 0;
               ball_x = 384;
               ball_y = 384;
           }

           //Столкновение со стеной
           void get_updown()
           {
               Random rnd = new Random();
               int i = rnd.Next(3);
               switch (i)
               {
                   case 0: { where_up = '='; break; }
                   case 1: { where_up = '+'; break; }
                   case 2: { where_up = '-'; break; }
               }
           }

       }
}