GWP3_Jumper.java

//Jumper.java   MrG 2012.0420
import java.awt.Color;
import info.gridworld.actor.Actor;
import info.gridworld.grid.Location;
import info.gridworld.grid.Grid;

public class Jumper extends Actor
{
    public Jumper()
    {
        setColor(Color.PURPLE);
    }

    public Jumper(Color jumperColor)
    {
        setColor(jumperColor);
    }

    public void act()
    {
        if(canJump())
        {
            jump();
        }
        else
        {
            turn();
        }
    }

    public void turn()
    {
        setDirection(getDirection() + Location.HALF_RIGHT);
    }

    public void jump()
    {
        Grid<Actor> gr = getGrid();
        if(gr == null)
            return;
        Location loc = getLocation();
        Location next = loc.getAdjacentLocation(getDirection());
        Location twoAway = next.getAdjacentLocation(getDirection());
        if(gr.isValid(twoAway))
        {
            moveTo(twoAway);
        }
        else
        {
            removeSelfFromGrid();
        }
        //Flower flower = new Flower(getColor());
        //flower.putSelfInGrid(gr, loc);
    }

    public boolean canJump()
    {
        Grid<Actor> gr = getGrid();
        if(gr == null)
        {
            return false;
        }
        Location loc = getLocation();
        Location next = loc.getAdjacentLocation(getDirection());
        if(!gr.isValid(next))
        {
            return false;
        }
        Actor neighbor = gr.get(next);
        if(!((neighbor == null)||(neighbor instanceof Flower)||(neighbor instanceof Rock)))
        {
            return false;
        }
        Location twoAway = next.getAdjacentLocation(getDirection());
        if(!gr.isValid(twoAway))
        {
            return false;
        }
        neighbor = gr.get(twoAway);
        return (neighbor == null)||(neighbor instanceof Flower)||(neighbor instanceof Bug)
    }
}