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

/**
 * A Mammal is either male or female. Females are pink and males are blue. A mammal will mate
 * with another mammal when they come into contact with each other 75% of the time. When they do 
 * mate they spawn an offspring that has a 50/50 chance of beeing either male or female. The offspring
 * gets the same name as the parent of its gender.
 * 
 * @author Shaan Iqbal
 * @version 02/02/2012
 */
public class Mammal extends Critter
{
    private String id;
    private String gender;
    private int stepsTaken;
    
    /**
     * Creates a new Mammal of a given gender and name. Males are blue and females are pink.
     * 
     * @param gen gender of the Mammal
     * @param name the name of the Mammal
     */
    public Mammal(String gen, String name)
    {
        id = name;
        gender = gen;

        if (gender.equals("F"))
        {
            setColor(Color.PINK);
        }
        else if (gender.equals("M"))
        {
            setColor(Color.BLUE);
        }

        stepsTaken = 0; 
    }
    
    /**
     * Gets the gender of a mammal.
     * 
     * @return the gender of the mammal
     */
    public String getGender()
    {
        return gender;
    }
    
    /**
     * Gets the id, or name, of the Mammal.
     * 
     * @return the id of the mammal
     */
    public String getId()
    {
        return id;
    }
    
    /**
     * Creates a new Mammal object in a random empty adjacent location to this Mammal.
     * The new Mammal is either male or female (50/50 chance) and has the same id as the
     * parent of the same gender.
     */
    public void mate()
    {
        Random gen = new Random();
        Grid gr = getGrid();
        Location loc = getLocation();
        ArrayList<Location> locNext = gr.getEmptyAdjacentLocations(loc);

        if (gen.nextInt(2) == 0)
        {
            Mammal maleOffspring = new Mammal("M" , getId());
            Location spawn = locNext.get(gen.nextInt(locNext.size() -1));
            maleOffspring.putSelfInGrid(gr , spawn);
        }
        else
        {
            Mammal femaleOffspring = new Mammal ("F" , getId());
            Location spawn = locNext.get(gen.nextInt(locNext.size() -1));
            femaleOffspring.putSelfInGrid(gr , spawn);
        }
    }
    
    /**
     * Two Mammals will mate if they are of opposite gender and have taken more than three steps.
     */
    public void processActors(ArrayList<Actor> actors)
    {
        Random gen = new Random();

        for (Actor a : actors)
        {
            if (a instanceof Mammal && !(this.getColor().equals(a.getColor())) && stepsTaken > 3)
            {
                if ((gen.nextInt(4) < 3))
                {
                    mate();
                }
            }
        }

    }
    
    /**
     * Moves the Mammal to a new location. Each time it moves the stepsTaken instance varibale is updated.
     */
    public void makeMove(Location loc)
    {
        if (loc == null)
        {
            removeSelfFromGrid();
        }
        else
        {
            moveTo(loc);
        }

        stepsTaken++;
    }
}