import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Predator here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Predator extends Actor
{
    int speed = Greenfoot.getRandomNumber(5) + 1;
    int width = Greenfoot.getRandomNumber(5) + 5;
    int height = Greenfoot.getRandomNumber(5) + 5;
    int turnRate = Greenfoot.getRandomNumber(10) + 20; 
    int hunger = 700;
    int heritedSpeed;
    public Predator() 
        {
            picture(0,0,width,height);
            setRotation(Greenfoot.getRandomNumber(360));
            heritedSpeed = Greenfoot.getRandomNumber(1) + speed;
        }
    public void picture(int x, int y, int width, int height)
        {
            GreenfootImage image = new GreenfootImage(width,height);
            image.setColor(Color.RED);
            image.fillRect(x,y,width,height);
            setImage(image);
        }
    public void movement()
    {
        move(speed);
        if(Greenfoot.getRandomNumber(turnRate) == 1)
           {
               setRotation(Greenfoot.getRandomNumber(360));
           }
    }
    public void act() 
        {
           movement();
           bounceOffWall();
           catchingPrey();
           death();
        }     
    public void bounceOffWall()
        {
            if (getY() == 0 || getY() == getWorld().getHeight()-1) 
            {
                setRotation(360-getRotation());
            }
            if (getX() == 0 || getX() == getWorld().getWidth()-1) 
            {
                setRotation(180-getRotation());
            }
        }
    public void catchingPrey()
    {
        int x = getX(); 
        int y = getY(); 
        if(isTouching(Prey.class))
        {
            removeTouching(Prey.class);
            hunger = 700;
            getWorld().addObject(new Predator(),x,y); 
        }
    }
    public void death()
    {
        hunger -= (0.1 + ((width + height)/15) + (speed/3));
        if(hunger < 1)
        {
            getWorld().removeObject(this);
        }
    }
    public int reproduction()
    {
        speed = Greenfoot.getRandomNumber(1) + speed;
        return speed;
    }
}