Can someone please help me out with these?
1. Once the crab has eaten 10 worms, the crab is full and cannot eat more worms.
2. At every move, the crab will lose 1/20 of a worm (energy).
3. When the crab runs out of energy it cannot move and dies (removed from the world).
public class Crab extends Animal
{
private GreenfootImage image1;
private GreenfootImage image2;
private int wormsEaten;
/**
* Create a crab and initialize its two images.
*/
public Crab()
{
image1 = new GreenfootImage("crab.png");
image2 = new GreenfootImage("crab2.png");
setImage(image1);
wormsEaten = (Greenfoot.getRandomNumber (23)+5);//Hartley - this makes the crab's initial number of worms eaten from 5 to 27 - satifies R5.
}
/**
* Act - do whatever the crab wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public void act()
{
randomTurn();//Hartley - this allows the Crab to move in a random direction each time it moves. Satisfies R4.
move();
lookForWorm();
switchImage();
turnAtEdge();
}
/**
* Alternate the crab's image between image1 and image2.
*/
public void switchImage()
{
if (getImage() == image1)
{
setImage(image2);
}
else
{
setImage(image1);
}
}
/**
* Check whether we have stumbled upon a worm.
* If we have, eat it. If not, do nothing. If we have
* eaten eight worms, we win.
*/
public void lookForWorm()
{
if ( canSee(Worm.class) )
{
eat(Worm.class);
Greenfoot.playSound("slurp.wav");
wormsEaten = wormsEaten + 1;
if (wormsEaten == 8)
{
Greenfoot.playSound("fanfare.wav");
Greenfoot.stop();
}
}
}
/**
* Randomly decide to turn from the current direction, or not. If we turn
* turn a bit left or right by a random degree.
*/
public void randomTurn()
{
if (Greenfoot.getRandomNumber(100) > 90) {
turn(Greenfoot.getRandomNumber(90)-45);
}
}
/**
* Check whether we are at the edge of the world. If we are, turn a bit.
* If not, do nothing.
*/
public void turnAtEdge()
{
if ( atWorldEdge() )
{
turn(17);
}
}
}