public void DeployTo(IPlanet planet, int landingPointX, int landingPointY, Movement.CardinalHeading landingCardinalHeading)
{
this.DeployedTo = planet;
if (landingPointX < 0 ||
landingPointY < 0 ||
landingPointX > planet.Size.Width ||
landingPointY > planet.Size.Height)
{
throw new ArgumentException("Rover cannot be deployed to a point outside the bounds of a planet.");
}
this.Position = new Position(landingPointX, landingPointY, landingCardinalHeading);
}
private void Move(Movement.Direction direction)
{
int gridPoints = direction == Movement.Direction.Forwards ? 1 : -1;
switch (this.Position.CardinalHeading)
{
case Movement.CardinalHeading.North:
this.Position.Point = new Point(this.Position.Point.X, this.Position.Point.Y + gridPoints);
break;
case Movement.CardinalHeading.East:
this.Position.Point = new Point(this.Position.Point.X + gridPoints, this.Position.Point.Y);
break;
case Movement.CardinalHeading.South:
this.Position.Point = new Point(this.Position.Point.X, this.Position.Point.Y - gridPoints);
break;
case Movement.CardinalHeading.West:
this.Position.Point = new Point(this.Position.Point.X - gridPoints, this.Position.Point.Y);
break;
}
// Bounds wrapping
if (this.Position.Point.X > this.DeployedTo.Size.Width)
{
this.Position.Point = new Point(0, this.Position.Point.Y);
}
else if (this.Position.Point.X < 0)
{
this.Position.Point = new Point(this.DeployedTo.Size.Width, this.Position.Point.Y);
}
else if (this.Position.Point.Y > this.DeployedTo.Size.Height)
{
this.Position.Point = new Point(this.Position.Point.X, 0);
}
else if (this.Position.Point.Y < 0)
{
this.Position.Point = new Point(this.Position.Point.X, this.DeployedTo.Size.Height);
}
// Detect collision
if (this.DeployedTo.HasObstacleAtPosition(this.Position))
{
throw new DetectedObstacleException();
}
}
public Position(int x, int y, Movement.CardinalHeading cardinalHeading)
{
this.Point = new Point(x, y);
this.CardinalHeading = cardinalHeading;
}
private void Turn(Movement.TurningDirection turn)
{
switch (turn)
{
case Movement.TurningDirection.Right:
if (this.Position.CardinalHeading == Movement.CardinalHeading.West)
{
// Bounds wrapping
this.Position.CardinalHeading = Movement.CardinalHeading.North;
}
else
{
this.Position.CardinalHeading += 1;
}
break;
case Movement.TurningDirection.Left:
if (this.Position.CardinalHeading == Movement.CardinalHeading.North)
{
// Bounds wrapping
this.Position.CardinalHeading = Movement.CardinalHeading.West;
}
else
{
this.Position.CardinalHeading -= 1;
}
break;
}
}
