private void GenerateFood()
{
int posX = random.Next(Matrix.GetLength(0));
int posY = random.Next(Matrix.GetLength(1));
Matrix[posX, posY] = new FoodBlock(Matrix[posX, posY]);
Console.WriteLine("New food created at " + Matrix[posX, posY]);
}
/// <summary>
/// Creates/Recreates the game and then starts it.
/// </summary>
private void NewGame()
{
this.Controls.Clear();
this.gridSize = new Size(this.ClientSize.Width / BaseBlock.StandardBlockSize.Width, this.ClientSize.Height / BaseBlock.StandardBlockSize.Height);
this.snake = new Snake(SnakeGame.DefaultSnakeLength);
this.emptyPositions = SnakeUtility.GetEmptyBlockPositions(this.snake, this.gridSize);
this.food = new FoodBlock(this.emptyPositions);
this.direction = new Point(0, 1);
this.state = GameState.Playing;
this.Invalidate();
this.gameTimer.Enabled = true;
}
/// <summary>
/// Checks if the <see cref="Snake"/> will eat a food block the next time it moves.
/// </summary>
/// <param name="snake">A <see cref="Snake"/> being checked if it will eat a food block.</param>
/// <param name="food">A <see cref="FoodBlock"/> being checked if it will be eaten.</param>
/// <param name="direction">A <see cref="Point"/> representing the direction the snake is moving.</param>
/// <returns>true if the snake will hit a food block on it's next move; otherwise false.</returns>
public static bool WillEatFood(Snake snake, FoodBlock food, Point direction)
{
// The position of the head of the snake.
Point snakeHead = snake.SnakeBlocks.First.Value.Position;
if (snakeHead.X + direction.X == food.Position.X && snakeHead.Y + direction.Y == food.Position.Y)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Performs the main loop of game which is ran on every tick of the game timer.
/// </summary>
private void GameLoop()
{
if (this.direction.X == 0 && this.direction.Y == 0)
{
return;
}
if (SnakeUtility.WillEatFood(this.snake, this.food, this.direction))
{
this.snake.Grow();
this.emptyPositions = SnakeUtility.GetEmptyBlockPositions(this.snake, this.gridSize);
this.food = new FoodBlock(this.emptyPositions);
}
this.snake.Move(this.direction);
this.previousDirection = this.direction;
if (SnakeUtility.HasCollidedWithSelf(this.snake) || SnakeUtility.HasHitBounds(this.snake, this.gridSize.Width, this.gridSize.Height) || this.emptyPositions.Count == 0)
{
this.GameOver();
}
}
