public bool Crash(Board Board, Point newHeadPosition)
{
if (Positions.Exists(point => point.X == newHeadPosition.X && point.Y == newHeadPosition.Y))
{
var tailPosition = Positions.Last();
if (tailPosition.X == newHeadPosition.X && tailPosition.Y == newHeadPosition.Y)
{
if (!Board.DidEat(newHeadPosition))
{
return false;
}
}
return true;
}
return false;
}
public void Tick(Board Board)
{
var newHeadPosition = new Point();
switch (CurrentDirection)
{
case Direction.Up:
newHeadPosition = new Point(Positions[0].X, mod((int)Positions[0].Y - 1, Rows));
break;
case Direction.Right:
newHeadPosition = new Point(mod((int)Positions[0].X + 1, Columns), Positions[0].Y);
break;
case Direction.Down:
newHeadPosition = new Point(Positions[0].X, mod((int)Positions[0].Y + 1, Rows));
break;
case Direction.Left:
newHeadPosition = new Point(mod((int)Positions[0].X - 1, Columns), Positions[0].Y);
break;
}
IsAlive = !Crash(Board, newHeadPosition);
Positions.Insert(0, newHeadPosition);
if (Board.DidEat(newHeadPosition))
{
Length++;
}
else
{
Positions.RemoveAt(Positions.Count - 1);
}
}