private SnakeSegment GetNextCell()
{
SnakeSegment head = _snake.Last();
SnakeSegment nextCell = new SnakeSegment(head);
nextCell.Move(Settings.SizeCell, Direction);
return(nextCell);
}
private void MoveBody()
{
SnakeSegment tail = _snake.First();
_snake.Remove(tail);
SnakeSegment head = GetNextCell();
_snake.Add(head);
}
private bool Eat(Fruit fruit)
{
SnakeSegment head = _snake.Last();
if (head.IsHit(fruit))
{
_snake.Add(new SnakeSegment(fruit));
return(true);
}
return(false);
}
public Snake(int length, Keys direction)
{
_snake = new List <SnakeSegment>();
Direction = direction;
SnakeSegment tail = new SnakeSegment(CenterFieldX, CenterFieldY);
for (int i = 0; i < length; i++)
{
SnakeSegment nextCell = new SnakeSegment(tail, Direction);
_snake.Add(nextCell);
tail = nextCell;
}
}
private bool IsHitTail()
{
SnakeSegment head = _snake.Last();
for (int i = 0; i < _snake.Count - 2; i++)
{
if (head.IsHit(_snake[i]))
{
return(true);
}
}
return(false);
}
public bool Equals(SnakeSegment cell)
{
if (ReferenceEquals(cell, null))
{
return(false);
}
if (ReferenceEquals(this, cell))
{
return(true);
}
if (GetType() != cell.GetType())
{
return(false);
}
return((X == cell.X) && (Y == cell.Y));
}