public void Move()
{
if (!_heading.IsEmpty)
{
int x;
int y;
_previousPositions.Put(_position);
x = _position.X + _heading.X;
y = _position.Y + _heading.Y;
if (x < 0 || y < 0 || x > _owner.Size.Width - 1 || y > _owner.Size.Height)
{
if (_owner.Wrap)
{
if (x < 0)
{
x = _owner.Size.Width - 1;
}
else if (x > _owner.Size.Width - 1)
{
x = 1;
}
if (y < 0)
{
y = _owner.Size.Height - 1;
}
else if (y > _owner.Size.Height - 1)
{
y = 1;
}
_position = new Point(x, y);
}
else
{
_heading = Compass.GetOpposite(_heading);
}
}
else
{
_position = new Point(x, y);
}
}
}
private void MoveStrand(Strand strand)
{
Chemoeffector noxious;
strand.Move();
noxious = this.GetClosestRepellor(strand);
if (noxious != null)
{
this.Flee(strand, noxious);
}
else
{
Chemoeffector food;
food = this.GetClosestAttractor(strand);
if (food != null)
{
this.Approach(strand, food);
}
else if (strand.PreviousSensor != 0)
{
strand.Heading = Compass.GetOpposite(strand.Heading);
this.Tumble(strand);
strand.PreviousSensor = 0;
this.CheckCollisions(strand);
}
else
{
this.Tumble(strand);
strand.PreviousSensor = 0;
this.CheckCollisions(strand);
}
}
}