Crabs are spinning and don't know why any suggestions.....
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
/**
* This class defines a crab. Crabs live on the beach. They like sand worms
* (very yummy, especially the green ones).
*
* Version: 5
*
* In this version, the crab behaves as before, but we add animation of the
* image.
*/
public class Crab extends Animal
{
private GreenfootImage image1;
private GreenfootImage image2;
private int wormsEaten;
private int targetWormsEaten;
private int wormEnergy;
private int wormCount;
public int numberOfSteps;
/**
* 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;//JC.....Sets the intial worms eaten from 5 to 27(energy).......this lines satisfies R5 requirement.
}
/**
* 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()
{
turnAtEdge();
randomTurn();//JC.....line allows the the crab to move in random directions......line satisfies R4 requirement.
move();
lookForWorm();
switchImage();
}
/**
* Alternate the crab's image between image1 and image2.
*/
public void switchImage()
{
if (getImage() == image1)
{
setImage(image2);
}
else
{
setImage(image1);
}
}
/**
* JC.....Check for wheather we are the edge of the world. If we are turn
*
*
*/
public void turnAtEdge()
{
if(atWorldEdge())
{
turn(17);
}
}
/**
* JC.....Turn randomly from the current direction or dont. If we do turn, turn right or left at a random degree.
* Function satisfies line R4 requirement.
*/
public void randomTurn()
{
if (Greenfoot.getRandomNumber(100)>90)
{turn(Greenfoot.getRandomNumber(90)-45);
}
}
/**
* Check whether we have stumbled upon a worm.
* If we have, eat it. If not, do nothing. If we have
* eaten 10 worms, the crab is full and cannot eat more worms.
*JC.....Function satisfies R6 requirements
*/
public void lookForWorm()
{
if ( wormsEaten !=targetWormsEaten&& canSee(Worm.class))
{
eat(Worm.class);
Greenfoot.playSound("slurp.wav");
wormsEaten = wormsEaten + 1;
if (wormsEaten == 10)
{
return;
}
}
if(wormsEaten <=0)
{
getWorld().removeObject(this);
return;
}
}
public void move()
{
if(wormsEaten==10)
{
wormEnergy = (wormEnergy + 20);
move(4);
wormEnergy = (wormEnergy - 1);
wormCount = (wormCount - 1);
}
}
}//END OF CRAB CLASS
