Can someone please help me with the wombats scenario. I am trying to make the bear to move to all fields. Would somebody be able to make me a code for that.
Thank you for your help and replies :D
KOSIUS
The code:
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
import java.util.List;
import java.util.ArrayList;
/**
* Wombat. A Wombat moves forward until it can't do so anymore, at
* which point it turns left. If a wombat finds a leaf, it eats it.
*
* @author Michael Kolling
* @version 1.0.1
*/
public class Wombat extends Actor
{
private static final int EAST = 0;
private static final int WEST = 1;
private static final int NORTH = 2;
private static final int SOUTH = 3;
private int direction;
private int leavesEaten;
public Wombat()
{
setDirection(EAST);
leavesEaten = 0;
}
/**
* Do whatever the wombat likes to to just now.
*/
public void act()
{
if(foundLeaf()) {
eatLeaf();
}
else if(canMove()) {
move();
}
else {
turnLeft();
}
}
/**
* Check whether there is a leaf in the same cell as we are.
*/
public boolean foundLeaf()
{
Actor leaf = getOneObjectAtOffset(0, 0, Leaf.class);
if(leaf != null) {
return true;
}
else {
return false;
}
}
/**
* Eat a leaf.
*/
public void eatLeaf()
{
Actor leaf = getOneObjectAtOffset(0, 0, Leaf.class);
if(leaf != null) {
// eat the leaf...
getWorld().removeObject(leaf);
leavesEaten = leavesEaten + 1;
}
}
/**
* Move one cell forward in the current direction.
*/
public void move()
{
if (!canMove()) {
return;
}
switch(direction) {
case SOUTH :
setLocation(getX(), getY() + 1);
break;
case EAST :
setLocation(getX() + 1, getY());
break;
case NORTH :
setLocation(getX(), getY() - 1);
break;
case WEST :
setLocation(getX() - 1, getY());
break;
}
}
/**
* Test if we can move forward. Return true if we can, false otherwise.
*/
public boolean canMove()
{
World myWorld = getWorld();
int x = getX();
int y = getY();
switch(direction) {
case SOUTH :
y++;
break;
case EAST :
x++;
break;
case NORTH :
y--;
break;
case WEST :
x--;
break;
}
// test for outside border
if (x >= myWorld.getWidth() || y >= myWorld.getHeight()) {
return false;
}
else if (x < 0 || y < 0) {
return false;
}
return true;
}
/**
* Turns towards the left.
*/
public void turnLeft()
{
switch(direction) {
case SOUTH :
setDirection(EAST);
break;
case EAST :
setDirection(NORTH);
break;
case NORTH :
setDirection(WEST);
break;
case WEST :
setDirection(SOUTH);
break;
}
}
/**
* Sets the direction we're facing.
*/
public void setDirection(int direction)
{
this.direction = direction;
switch(direction) {
case SOUTH :
setRotation(90);
break;
case EAST :
setRotation(0);
break;
case NORTH :
setRotation(270);
break;
case WEST :
setRotation(180);
break;
default :
break;
}
}
/**
* Tell how many leaves we have eaten.
*/
public int getLeavesEaten()
{
return leavesEaten;
}
}
