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

/**
 * Write a description of class Seal here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Seal extends Predator
{
    
    /**
     * Act - do whatever the Seal wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
     if (isOffScreen())
     {
          getWorld().removeObject(this);
     }
     
     if (foundPlayer())
     {
          eatPlayer();
     }
     setLocation(getX() - 10, getY());
}

public boolean foundPlayer()
    {
        Actor player = getOneObjectAtOffset(0, 0, Player.class);
        if(player != null) {
            return true;
        }
        else {
            return false;
        }
    }
    
    public boolean isOffScreen()
{
     if (getX() < 0 - getImage().getWidth()/2 || 
getX() > getWorld().getWidth() + getImage().getWidth()/2 ||
getY() < 0 - getImage().getHeight()/2 ||
getY() > getWorld().getHeight() + getImage().getHeight()/2)
     {
          return true;
     }
     return false;
}

public void eatPlayer()
{
    Actor player = getOneObjectAtOffset(0, 0, Player.class);
    if(player != null) {
        getWorld().removeObject(player); 
    }
}
}