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thank you ttamasu it was the uppercase S that was the issue....yea i need a random number but i need the random number to link to different images so that different images appear. this is exactly the problem: Take a look at the constructor. Right now, all it does is set a speed for the leaves. Notice that there are 4 possible images for leaves, even though right now, only one image is displayed. Add code that generates a random number and uses that to decide which leaf image to display. That will make the display look more interesting. Test – you should see 4 kinds of leaves falling.

That worked! Thank you.

I coded that line with the same syntax as your line 8 above. Check the turnTowards(...) method declaration to see what type parameters it uses.

Thank you that answered my question perfectly :)

The compiler points to 'public act; void()', which it does not understand as it should be 'public void act()'.

This "Christmas tree with blinking lights" animation helped me a lot :) Just click the Open in Greenfoot button, and you'll see the code with comments from the programmer: http://www.greenfoot.org/scenarios/521

You will have to program tha functionality into your actor. Check the Greenfoot API in the actor class for what methods you might need. (Click the 'Documentation' link above, just within the green header; then in the 'Reference' section on the right, click on 'online'; and finally, click on 'Actor' for the actor class methods available.

Or just type immediately before the code and immediately after the code.

Any time a pattern, like in the above code you provided, occurs, you should consider what options you may have to condense the code. Ask yourself if there might be a way to code it without any 'if's or 'switch'es. Almost always, you will find another way.

I wrote the blog post that duta mentions: http://sinepost.wordpress.com/2012/04/10/burning-rubber/ You might need to read this one too, to understand polar coordinates: http://sinepost.wordpress.com/2012/03/27/where-am-i-headed/ If you get stuck with either post, please do leave a comment on the blog and I'll attempt to explain it in more detail.

for one thing you should be incrementing the counter in the act() method which represents one cycle. What you are doing is making a while loop which which would be done before I could even type one character., so I redid your snippet so that when counter = 0; its done. I assume that updateClock will update your clock image and timer is called from the act () method. private static final TIME_LIMIT = 15; private int timeCounter = 0; private int counter = TIME_LIMIT; private void timer() if (counter > 0) if (timeCounter++ >= 40)

Thanks for this, It will help a lot ^^