Discussions

If you mean lives_left extends player, then that is a problem. An extension of a class is to create instances of the class it extends, just with possible added (or modified) stuff. It could (1) add extra state (new fields); (2) add or modify behavior (new method or method override); or (3) any combination of (1) and (2) (including neither just to give special categorizing).

In MyWorld class addLeaves method, your while loop's condition never changes. Execution gets caught in the loop because "i" is never greater than "18".

In your last post, you have '60' times some random number up to '100', making a value up to '6000 for an x-coordinate (that part did not need any attention; so I do not know why you messed with it. Another thing I see is that you are placing the apples at negative valued y-coordinates by using '-i' in the addObject line. I am guessing your world is 800x600. If so, I think this is what you need: <Code Omitted>

Yes. How would that be a problem?

In greenfoot, the main method is hidden. Greenfoot automatically constructs your initial world, which is where you jump in with your coding. You put code in your initial world constructor to create any initial actors needed and add them into the world (even if it is just calling a method to do it).

Remove line 5. First, this line is executed once when the Block object is created. It doesn’t change when the player moves. Second, a class doesn’t have a location. An object does. In your case, maybe the following could work: <Code Omitted> If you want the condition to be independent on the x-coordinate, you need to get a reference to the Player in the world: <Code Omitted>

Ah, you're right. My bad, I thought I mentioned the null pointer. Moving the myWorld into act() fixed it, thank you!

Thank you so much!!! It finally worked.

You can use my Combo Support Demo scenario as an example. You would only need to add the timer.

Is there an output console minimized or open displaying any sort of error? Or perhaps a syntax error? Try restarting the Greenfoot program.

alr got it working thanks a million

Thanks it worked!