import info.gridworld.actor.Bug;
import info.gridworld.grid.Location;
/**
* A ZBug traces out a Z pattern of a given size.
*/
public class ZBug extends Bug
{
private int segmentLength; // the number of flowers in each segment
private int steps; // the number of steps in the current side
private int segment; // which segment of the Z the ZBug is on
/**
* Constructs a Zbug that traces a Z pattern in which each segment
* of the Z has the given length
* When the Z is drawn, the ZBug stops.
* @param length the segment length
*/
public ZBug(int length)
{
setDirection(Location.EAST);
steps = 0;
segment = 1;
segmentLength = length;
}
public void act()
{
if (segment <= 3 && steps < segmentLength)
{
if (canMove())
{
move();
steps++;
}
}
else if (segment == 1)
{
setDirection(Location.SOUTHWEST);
steps = 0;
segment++;
}
else if (segment == 2)
{
setDirection(Location.EAST);
steps = 0;
segment++;
}
}
}