/// <summary>
/// If there are already body parts than create new based on the localization of the last one.
/// </summary>
/// <param name="previousSquare">Last snake body part</param>
/// <param name="thisSquare">New body part</param>
/// <returns></returns>
public SnakeSquare CreateSquare(SnakeSquare previousSquare, SnakeSquare thisSquare)
{
if (previousSquare.CurrentMovement == SnakeMovement.Up)
{
thisSquare.ChangeMovement(SnakeMovement.Up);
thisSquare.Y = previousSquare.Y + 10;
thisSquare.X = previousSquare.X;
}
else if (previousSquare.CurrentMovement == SnakeMovement.Down)
{
thisSquare.ChangeMovement(SnakeMovement.Down);
thisSquare.Y = previousSquare.Y - 10;
thisSquare.X = previousSquare.X;
}
else if (previousSquare.CurrentMovement == SnakeMovement.Right)
{
thisSquare.ChangeMovement(SnakeMovement.Right);
thisSquare.Y = previousSquare.Y;
thisSquare.X = previousSquare.X - 10;
}
else if (previousSquare.CurrentMovement == SnakeMovement.Left)
{
thisSquare.ChangeMovement(SnakeMovement.Left);
thisSquare.Y = previousSquare.Y;
thisSquare.X = previousSquare.X + 10;
}
return(thisSquare);
}
/// <summary>
/// If there are no other body parts than create a new one based on the localization of the snake
/// </summary>
/// <param name="snake">Player</param>
/// <param name="thisSquare">New body part</param>
/// <returns></returns>
public SnakeSquare CreateSquare(Snake snake, SnakeSquare thisSquare)
{
var previousSquare = new SnakeSquare()
{
X = snake.X,
Y = snake.Y,
CurrentMovement = snake.CurrentMovement
};
return(CreateSquare(previousSquare, thisSquare));
}
/// <summary>
/// If there are no other squares then move the square according to the snake
/// </summary>
/// <param name="snake">Player</param>
/// <param name="thisSquare">This square</param>
/// <returns></returns>
public SnakeSquare MoveSquare(Snake snake, SnakeSquare thisSquare)
{
var previousSquare = new SnakeSquare()
{
X = snake.X - snake.XSpeed,
Y = snake.Y - snake.YSpeed,
CurrentMovement = snake.CurrentMovement
};
return(MoveSquare(previousSquare, thisSquare));
}
