Discussions

Thank you I appreciate that, didn't know about the sound folder!

The class java.util.Vector is not a (double rotation, double magnitude) type vector class. If you look at the documentation of the class, it extends the java.util.AbstractList class and creates an object that that is a collection (meaning elements -- objects -- can be added to it to create that collection. It has nothing to do with direction and force.

I have resolved the issue. I'll post the code just in case anyone needs this later. My world:

If anyone else using a Mac has this problem, the fix is to open your Terminal and type: defaults write -g ApplePressAndHoldEnabled -bool false For some reason it is not an option in System Preferences .

The greenfoot.Greenfoot class has the methods you will need both for checking on click on an actor and for changing worlds. Check out the documentation on the class.

Remove all from lines 7 to line 24 except for line 23.

Thanks

With speed 50 (speed slider in the middle), one second is about 55 act cycles, so you could count it as it is and when displaying, you divide it by 55. And stopping at 0 makes sense if you don't want a negative time. You could stop the scenario at 0 or do whatever should be done when the time is over.

my world class

Line 18 alone removes all objects from the world.

Alright. Thanks a lot :)

The mouseDragged method requires an object, not a class. So for a start, replace 'Pet.class' with 'this'.

You can have a variable used as a timer in your world. <Code Omitted>

Do you change the image in your act method? Or in other words, if you don't start the scenario and add a Puppy with right click on the class, is the image huge or 20x20? Are you sure it is compiled? Sometimes, when the auto-compile doesn't work anymore, you have to restart Greenfoot.