Tetris wyjasnienie

[KillerBee]

Witajcie. Czy moglibyście wyjasnic mi co sie po kolei dzieje w tym kodzie?

Prosze o wklejenie kodu z komentarzem.

C#

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;


namespace tetris

{

    public partial class Form1 : Form

    {

        public bool appRunning = false;

        public Tile activeTile = null;

        Random rnd = new Random();

        public bool[,] tilesMatrix;

        public Form1()

        {

            InitializeComponent();

            tilesMatrix = new bool[

                arenaPanel.Width / Tile.TileWidth,

                arenaPanel.Height / Tile.TileHeight];

        }


        private void startButton_Click(object sender, EventArgs e)

        {

            if (appRunning)

            {

                appRunning = false;

                startButton.Text = "START";

            }

            else

            {

                appRunning = true;

                startButton.Text = "STOP";

                timer1.Enabled = true;

            }

        }


        private void timer1_Tick(object sender, EventArgs e)

        {

            if (appRunning)

            {

                if (activeTile == null) //create a new tile to fall down

                {

                    int pos = rnd.Next(1,tilesMatrix.GetLength(0)-1);

                    if (tilesMatrix[pos, 0])

                    {  // end of game

                        appRunning = false;

                        MessageBox.Show("Game Over");

                        arenaPanel.Controls.Clear();

                        for (int i = 0; i < tilesMatrix.GetLength(0); ++i)

                            for (int j = 0; j < tilesMatrix.GetLength(1); ++j)

                            {

                                tilesMatrix[i, j] = false;

                            }

                        startButton.Text = "START";

                    }

                    else

                    {

                        tilesMatrix[pos, 0] = true;

                        activeTile = new Tile();

                        arenaPanel.Controls.Add(activeTile);

                        

                        activeTile.Location = new Point(pos * Tile.TileWidth, 0);

                        activeTile.UseVisualStyleBackColor = true;

                        activeTile.Enabled = true;

                        //activeTile.BackColor = Color.Red;

                        int x = rnd.Next(3);

                        if (x == 1)

                        {

                            activeTile.BackColor = Color.Red;

                        }

                        else if (x == 2)

                        {

                            activeTile.BackColor = Color.Yellow;

                        }

                        else

                        {

                            activeTile.BackColor = Color.Green;

                        }


                    }

                }

                else

                { //continue falling down

                    if (activeTile.Location.Y + 2 * Tile.TileHeight >= arenaPanel.Height)

                    {  // the tile is at the bottom

                        activeTile = null;

                    }

                    else

                    {

                        int posx = activeTile.Location.X / activeTile.Width;

                        int posy = activeTile.Location.Y / activeTile.Height;


                        if (!tilesMatrix[posx, posy + 1])

                        {

                            tilesMatrix[posx, posy + 1] = true;

                            activeTile.Location = new Point(posx * Tile.TileWidth, (posy + 1) * Tile.TileHeight);

                            tilesMatrix[posx, posy] = false;

                        }

                        else

                        { //tile blocked

                            activeTile = null;

                        }


                    }

                }

            }

        }


        private void leftButton_Click(object sender, EventArgs e)

        {

            if (appRunning)

            {

                if (activeTile != null)

                {

                    int posx = activeTile.Location.X / activeTile.Width;

                    int posy = activeTile.Location.Y / activeTile.Height;


                    if ((posx - 1) >=0 && tilesMatrix[posx - 1, posy] == false)

                    {

                        activeTile.Location = new Point((posx -1) * Tile.TileWidth, posy * Tile.TileHeight);

                        tilesMatrix[posx, posy] = false;

                    }

                }

            }

        }


        private void rightButton_Click(object sender, EventArgs e)

        {

            if (appRunning)

            {

                if (activeTile != null)

                {

                    int posx = activeTile.Location.X / activeTile.Width;

                    int posy = activeTile.Location.Y / activeTile.Height;


                    if ((posx + 1) < tilesMatrix.GetLength(0) && tilesMatrix[posx + 1, posy] == false)

                    {

                        activeTile.Location = new Point((posx + 1) * Tile.TileWidth, posy * Tile.TileHeight);

                        tilesMatrix[posx, posy] = false;

                    }

                }

            }

        }


        private void downButton_Click(object sender, EventArgs e)

        {

            if (appRunning)

            {

                if (activeTile != null)

                {

                    int posx = activeTile.Location.X / activeTile.Width;

                    int posy = activeTile.Location.Y / activeTile.Height;

                    int buf =0;

                    for (int i = posy; i < (arenaPanel.Height / Tile.TileHeight);i++ )

                    {

                        if (tilesMatrix[posx, i] == false) buf = i;

                    }

                    tilesMatrix[posx, posy] = false;

                    activeTile.Location = new Point(posx * Tile.TileWidth, buf * Tile.TileHeight);

                    tilesMatrix[posx, buf] = true;

                }

            }

        }


        private void Form1_Load(object sender, EventArgs e)

        {


        }

    }


}

Dziekuje za pomoc.

[[Ekspert] Hakken]

Chcesz, żeby dodać linijkę z komentarzem, do każdej linii kodu ? To dość nudne i tak naprawdę niewiele da.

Postaraj się "odpalić" program w głowie/na kartce, zobacz co się po kolei dzieje, a jak będziesz miał problem z jakimś miejscem w kodzie to zaznacz o który fragment kodu, to ja (albo ktoś inny) ci to wyjaśni.