public void Grow()
{
var tail = this.Parts[this.Parts.Count - 1];
var x = tail.Position.X;
var y = tail.Position.Y;
var direction = tail.Direction;
var size = tail.Size;
var newX = x + BaseConstants.SquareSize * (-BaseConstants.DX[direction]);
var newY = y + BaseConstants.SquareSize * (-BaseConstants.DY[direction]);
var newTail = new SnakeSegment(new Position(newX, newY), size, Speed, tail.Direction);
this.Parts.Add(newTail);
this.OnPropertyChanged("Size");
}
public Snake(Position pos, int size, int speed)
: base(pos, size)
{
this.Speed = speed;
this.IsDestroyed = false;
this.Parts = new ObservableCollection <SnakeSegment>();
var head = new SnakeHead(pos, BaseConstants.SquareSize, speed);
this.Parts.Add(head);
this.head = new ObservableCollection <SnakeSegment>()
{
head
};
for (int i = 1; i < size; i++)
{
var position = new Position(pos.X - i * BaseConstants.SquareSize, pos.Y);
var part = new SnakeSegment(position, BaseConstants.SquareSize, this.Speed);
this.Parts.Add(part);
}
}
