// check is selected direction is valid
public bool IsValidPath(GameArea gameArea, Matrix3x3 matrix3X3)
{
if (PressedKey == ConsoleKey.DownArrow)
{
if (matrix3X3.Matrix[1, 2] == gameArea.Empty || matrix3X3.Matrix[1, 2] == gameArea.Candy)
{
return(true);
}
return(false);
}
else if (PressedKey == ConsoleKey.UpArrow)
{
if (matrix3X3.Matrix[1, 0] == gameArea.Empty || matrix3X3.Matrix[1, 0] == gameArea.Candy)
{
return(true);
}
return(false);
}
else if (PressedKey == ConsoleKey.LeftArrow)
{
if (matrix3X3.Matrix[0, 1] == gameArea.Empty || matrix3X3.Matrix[0, 1] == gameArea.Candy)
{
return(true);
}
return(false);
}
else
{
if (matrix3X3.Matrix[2, 1] == gameArea.Empty || matrix3X3.Matrix[2, 1] == gameArea.Candy)
{
return(true);
}
return(false);
}
}
//move tail part to last body part position
private void MoveTail(GameArea gameArea, int tailX, int tailY)
{
// if body part is down from tail, move tail part there
if (gameArea.Matrix[tailX, tailY + 1] == gameArea.SnakeBody)
{
gameArea.Matrix[tailX, tailY] = gameArea.Empty;
gameArea.Matrix[tailX, tailY + 1] = gameArea.SnakeTail;
}
// if body part is up
else if (gameArea.Matrix[tailX, tailY - 1] == gameArea.SnakeBody)
{
gameArea.Matrix[tailX, tailY] = gameArea.Empty;
gameArea.Matrix[tailX, tailY - 1] = gameArea.SnakeTail;
}
// if body part is left
else if (gameArea.Matrix[tailX - 1, tailY] == gameArea.SnakeBody)
{
gameArea.Matrix[tailX, tailY] = gameArea.Empty;
gameArea.Matrix[tailX - 1, tailY] = gameArea.SnakeTail;
}
// if body part is right
else if (gameArea.Matrix[tailX + 1, tailY] == gameArea.SnakeBody)
{
gameArea.Matrix[tailX, tailY] = gameArea.Empty;
gameArea.Matrix[tailX + 1, tailY] = gameArea.SnakeTail;
}
}
static void Main(string[] args)
{
// init setup console and game area
GameArea gameArea = new GameArea(15, 15);
gameArea.SetConsoleSize();
bool gameOver = false;
Matrix3x3 matrix3x3 = new Matrix3x3();
Movement movement = new Movement(matrix3x3);
while (!gameOver)
{
gameArea.ShowMatrix();
gameArea.UpdateSnakeLocation();
// check area around snake's head
matrix3x3.GetNeighbors(gameArea, gameArea.SnakeHeadLocation.Item1, gameArea.SnakeHeadLocation.Item2);
// move snake
movement.ReadPressedKey(1000);
if (!movement.IsValidPath(gameArea, matrix3x3))
{
gameOver = true;
break;
}
movement.Move(gameArea, matrix3x3);
}
Console.WriteLine("Game over");
Console.WriteLine("Score: " + gameArea.Score);
Console.ReadLine();
}
// check if candy is on target location
private bool IsValidPathCandy(GameArea gameArea, int x, int y)
{
if (gameArea.Matrix[x, y] == gameArea.Candy)
{
gameArea.Score += 1;
if (gameArea.speedMs >= 100)
{
gameArea.speedMs -= 50;
}
return(true);
}
return(false);
}
// return matrix of neighbors (3x3)
// borders (walls) = "[]", "empty" are returned as in gameArea.matrix
public void GetNeighbors(GameArea gameArea, int x, int y)
{
string[,] neighbors = new string[3, 3];
for (int NX = 0; NX < 3; NX++)
{
for (int NY = 0; NY < 3; NY++)
{
if ((NX == 0 && x == 0) || (NX == 2 && x == gameArea.LenX - 1))
{
neighbors[NX, NY] = gameArea.Wall;
}
else if ((NY == 0 && y == 0) || (NY == 2 && y == gameArea.LenY - 1))
{
neighbors[NX, NY] = gameArea.Wall;
}
else
{
neighbors[NX, NY] = gameArea.Matrix[x + NX - 1, y + NY - 1];
}
}
}
this.Matrix = neighbors;
}
// move whole gameArea matrix
public void Move(GameArea gameArea, Matrix3x3 matrix3x3)
{
int headX = gameArea.SnakeHeadLocation.Item1;
int headY = gameArea.SnakeHeadLocation.Item2;
int tailX = gameArea.SnakeTailLocation.Item1;
int tailY = gameArea.SnakeTailLocation.Item2;
//if down arrow
if (PressedKey == ConsoleKey.DownArrow)
{
if (IsValidPathCandy(gameArea, headX, headY + 1))
{
gameArea.CreateCandy();
}
else
{
MoveTail(gameArea, tailX, tailY);
}
// move head and change old head position to body
gameArea.Matrix[headX, headY + 1] = gameArea.SnakeHead;
gameArea.Matrix[headX, headY] = gameArea.SnakeBody;
}
//if up arrow
if (PressedKey == ConsoleKey.UpArrow)
{
if (IsValidPathCandy(gameArea, headX, headY - 1))
{
gameArea.CreateCandy();
}
else
{
MoveTail(gameArea, tailX, tailY);
}
gameArea.Matrix[headX, headY - 1] = gameArea.SnakeHead;
gameArea.Matrix[headX, headY] = gameArea.SnakeBody;
}
//if left arrow
if (PressedKey == ConsoleKey.LeftArrow)
{
if (IsValidPathCandy(gameArea, headX - 1, headY))
{
gameArea.CreateCandy();
}
else
{
MoveTail(gameArea, tailX, tailY);
}
gameArea.Matrix[headX - 1, headY] = gameArea.SnakeHead;
gameArea.Matrix[headX, headY] = gameArea.SnakeBody;
}
//if right arrow
if (PressedKey == ConsoleKey.RightArrow)
{
if (IsValidPathCandy(gameArea, headX + 1, headY))
{
gameArea.CreateCandy();
}
else
{
MoveTail(gameArea, tailX, tailY);
}
gameArea.Matrix[headX + 1, headY] = gameArea.SnakeHead;
gameArea.Matrix[headX, headY] = gameArea.SnakeBody;
}
}
