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To check whether a key is pressed at the moment you can use Greenfoot.isKeyDown(String keyname). You also find this in the Greenfoot API. If you want your actor to move in the direction of the arrow keys you can use this method: You have to call this method from your act method to use it.

Thanks Gevater_Todd4711...really recommend greefoot its awesome. only one problem i'm getting an error in line 8. My code sysntax is correct but I keep hetting an error : illegal start type what does this mean?

public void move() { if (Greenfoot.isKeyDown("up")){ setLocation(getX(), getY()-1); } if (Greenfoot.isKeyDown("down")){ setLocation(getX(), getY()+1); } if (Greenfoot.isKeyDown("left")){ setLocation(getX()-1, getY()); } if (Greenfoot.isKeyDown("right")){ setLocation(getX()+1, getY()); } } I can't see what I'm doing wrong...maybe iits my syntax coding...what do you think?

To me this method seems to be ok. Can you post your whole code? maybe there is a failur somewhere else. And if you post code you should use the code funktion of greenfoot. You find it under the textfield.

i noticed an error and made a correction. i forgot to include the act (); sorry here is my code. it now works public void move() { //System.out.println("move funtion called"); /*if (Greenfoot.isKeyDown("up")){ setLocation(getX(), getY()-1); } if (Greenfoot.isKeyDown("down")){ setLocation(getX(), getY()+1); }*/ if (Greenfoot.isKeyDown("left")){ //System.out.println("left key pressed"); setLocation(getX()-1, getY()); } if (Greenfoot.isKeyDown("right")){ setLocation(getX()+1, getY()); //System.out.println( "right key pressed"); } } public void act() { move(); } }

With this method you can check whether the object is at the edge of the world:

what does the error: illegal start type mean at line 9? I'm confused public boolean atWorldEdge() { if (getX() < 20 || getX() > getWorld().getWidth() - 20) { return true; } if (getY() < 20 || getY() > getWorld().getHeight() - 20) { return true; } } return false; }

i too cannot see where the error, here is the full code for a better look import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) /** * Write a description of class basket here. * * @author (your name) * @version (a version number or a date) */ public class basket extends Actor { /** * Act - do whatever the basket wants to do. This method is called whenever * the 'Act' or 'Run' button gets pressed in the environment. */ public void move() { //System.out.println("move funtion called"); /*if (Greenfoot.isKeyDown("up")){ setLocation(getX(), getY()-1); } if (Greenfoot.isKeyDown("down")){ setLocation(getX(), getY()+1); }*/ if (Greenfoot.isKeyDown("left")){ //System.out.println("left key pressed"); setLocation(getX()-1, getY()); } if (Greenfoot.isKeyDown("right")){ setLocation(getX()+1, getY()); //System.out.println( "right key pressed"); } } public void act() { move(); } public boolean atWorldEdge() { // object detects edge of world then stops if (getX() < 20 || getX() > getWorld().getWidth() - 20) { return true; } if (getY() < 20 || getY() > getWorld().getHeight() - 20) { return true; } } return false; } }