import java.awt.Color;
import java.util.ArrayList;
import info.gridworld.grid.Grid;
import info.gridworld.grid.Location;
import info.gridworld.actor.Actor;
import info.gridworld.actor.Critter;
import info.gridworld.actor.Rock;

/**
 * ZombieCritter:an infected critter that can spread the infection to a healthyCritter().
 * @author Kevin Hopkins
 * @version February 3rd, 2011
 */


public class ZombieCritter extends Critter
{

    /**
     * Creates a red ZombieCritter.
     */
    public ZombieCritter()
    {
        setColor(Color.RED);
    }

    /**
     *
     */
    public void processActors(ArrayList<Actor> actors)
    {
        int n = actors.size();
        if(n == 0)
        {
            removeSelfFromGrid();
        }

        for (Actor a : actors)
        {
            if (a instanceof Rock)
                a.removeSelfFromGrid();
        }

    }

    /**
     *
     */
    public ArrayList<HealthyCritter> getHealthyCritters()
    {
        Grid<Actor> gr = getGrid();
        Actor a;
        ArrayList<Location> occ = gr.getOccupiedLocations();
        ArrayList<Actor> healthyCritters = new ArrayList<HealthyCritter>();
        for (Location loc : occ)
        {
            a = gr.get(loc);
            if (a instanceof HealthyCritter)
            {
                healthyCritters.add(a);
            }
        }

        return healthyCritters;
    }

    /**
     *
     */
    public Location selectHealthyCritter()
    {
        int n = getHealthyCritters().size();
        int r = (int)(Math.random() * n);
        return healthyCritters.getLocation(r);
    }

}