Ytdyklly

This is my first console application in C# and I think it's unnecessarily wrong and I made some bad practices, but at least it works smoothly. How could I improve this code so that next time I write a console application it won't be as garbled as this?

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Text;

using System.Threading;

using System.Threading.Tasks;



namespace ConsoleApp1 {

 class Program {



  static readonly int gridW = 90;

  static readonly int gridH = 25;

  static Cell[, ] grid = new Cell[gridH, gridW];

  static Cell currentCell;

  static Cell food;

  static int FoodCount;

  static int direction; //0=Up 1=Right 2=Down 3=Left

  static readonly int speed = 1;

  static bool Populated = false;

  static bool Lost = false;

  static int snakeLength;



  static void Main(string args) {

   if (!Populated) {

    FoodCount = 0;

    snakeLength = 5;

    populateGrid();

    currentCell = grid[(int) Math.Ceiling((double) gridH / 2), (int) Math.Ceiling((double) gridW / 2)];

    updatePos();

    addFood();

    Populated = true;

   }



   while (!Lost) {

    Restart();

   }

  }



  static void Restart() {

   Console.SetCursorPosition(0, 0);

   printGrid();

   Console.WriteLine("Length: {0}", snakeLength);

   getInput();

  }



  static void updateScreen() {

   Console.SetCursorPosition(0, 0);

   printGrid();

   Console.WriteLine("Length: {0}", snakeLength);

  }



  static void getInput() {



   //Console.Write("Where to move? [WASD] ");

   ConsoleKeyInfo input;

   while (!Console.KeyAvailable) {

    Move();

    updateScreen();

   }

   input = Console.ReadKey();

   doInput(input.KeyChar);

  }



  static void checkCell(Cell cell) {

   if (cell.val == "%") {

    eatFood();

   }

   if (cell.visited) {

    Lose();

   }

  }



  static void Lose() {

   Console.WriteLine("n You lose!");

   Thread.Sleep(1000);

   Process.Start(System.Reflection.Assembly.GetExecutingAssembly().Location);

   Environment.Exit(-1);

  }



  static void doInput(char inp) {

   switch (inp) {

    case 'w':

     goUp();

     break;

    case 's':

     goDown();

     break;

    case 'a':

     goRight();

     break;

    case 'd':

     goLeft();

     break;

   }

  }



  static void addFood() {

   Random r = new Random();

   Cell cell;

   while (true) {

    cell = grid[r.Next(grid.GetLength(0)), r.Next(grid.GetLength(1))];

    if (cell.val == " ")

     cell.val = "%";

    break;

   }

  }



  static void eatFood() {

   snakeLength += 1;

   addFood();

  }



  static void goUp() {

   if (direction == 2)

    return;

   direction = 0;

  }



  static void goRight() {

   if (direction == 3)

    return;

   direction = 1;

  }



  static void goDown() {

   if (direction == 0)

    return;

   direction = 2;

  }



  static void goLeft() {

   if (direction == 1)

    return;

   direction = 3;

  }



  static void Move() {

   if (direction == 0) {

    //up

    if (grid[currentCell.y - 1, currentCell.x].val == "*") {

     Lose();

     return;

    }

    visitCell(grid[currentCell.y - 1, currentCell.x]);

   } else if (direction == 1) {

    //right

    if (grid[currentCell.y, currentCell.x - 1].val == "*") {

     Lose();

     return;

    }

    visitCell(grid[currentCell.y, currentCell.x - 1]);

   } else if (direction == 2) {

    //down

    if (grid[currentCell.y + 1, currentCell.x].val == "*") {

     Lose();

     return;

    }

    visitCell(grid[currentCell.y + 1, currentCell.x]);

   } else if (direction == 3) {

    //left

    if (grid[currentCell.y, currentCell.x + 1].val == "*") {

     Lose();

     return;

    }

    visitCell(grid[currentCell.y, currentCell.x + 1]);

   }

   Thread.Sleep(speed * 100);

  }



  static void visitCell(Cell cell) {

   currentCell.val = "#";

   currentCell.visited = true;

   currentCell.decay = snakeLength;

   checkCell(cell);

   currentCell = cell;

   updatePos();



   //checkCell(currentCell);

  }



  static void updatePos() {



   currentCell.Set("@");

   if (direction == 0) {

    currentCell.val = "^";

   } else if (direction == 1) {

    currentCell.val = "<";

   } else if (direction == 2) {

    currentCell.val = "v";

   } else if (direction == 3) {

    currentCell.val = ">";

   }



   currentCell.visited = false;

   return;

  }



  static void populateGrid() {

   Random random = new Random();

   for (int col = 0; col < gridH; col++) {

    for (int row = 0; row < gridW; row++) {

     Cell cell = new Cell();

     cell.x = row;

     cell.y = col;

     cell.visited = false;

     if (cell.x == 0 || cell.x > gridW - 2 || cell.y == 0 || cell.y > gridH - 2)

      cell.Set("*");

     else

      cell.Clear();

     grid[col, row] = cell;

    }

   }

  }



  static void printGrid() {

   string toPrint = "";

   for (int col = 0; col < gridH; col++) {

    for (int row = 0; row < gridW; row++) {

     grid[col, row].decaySnake();

     toPrint += grid[col, row].val;



    }

    toPrint += "n";

   }

   Console.WriteLine(toPrint);

  }

  public class Cell {

   public string val {

    get;

    set;

   }

   public int x {

    get;

    set;

   }

   public int y {

    get;

    set;

   }

   public bool visited {

    get;

    set;

   }

   public int decay {

    get;

    set;

   }



   public void decaySnake() {

    decay -= 1;

    if (decay == 0) {

     visited = false;

     val = " ";

    }

   }



   public void Clear() {

    val = " ";

   }



   public void Set(string newVal) {

    val = newVal;

   }

  }

 }

}