ZBug.java

import info.gridworld.actor.Bug;
import info.gridworld.grid.Location;

public class ZBug extends Bug { 
    private int segmentLength;
    private int steps;
    private int segment;
    
    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 ++;
	}
    }
}