Discussions

I have fixed the issue. If you call addObject from a TimerTask class (java.util.Timer), then Greenfoot has a chance of giving an error when that Actor is being removed along with other ones. The only way to avoid the errors is to stop using the java.util.Timer. Greenfoot is not thread safe it seems

Thank you!:)

The tutorial has just about all the information you should need.

You have 9 different worlds. That is not bad, in and of itself; but, I am sure it would be taxing on memory if you all of them existing at the same time. So, my first suggestion may not be the best approach. Since I do not know anything about your worlds, no suggestion can be formulated at this time. Please provide world class codes for which cat is initially located. Now, if there was a way to "save" your worlds using minimal data (without saving the worlds themsel

In line 27 of Rope class, you probably want the y-coordinate of the addObject line to be zero. Then, in the act method of the Cage class, you need the falling code:

Use the getOneObjectAtOffset method:

The code provided by myself was tested before posting. I am quite sure it, by itself, is not the problem. Please show your updated code.

I thought I took care of that with line 12. However, it seems to be misplaced. Move line 12 two lines down to have lines 6 through 15 look like this: <Code Omitted>As long as the provided code is placed in the act method before the movement code, It should now work as required.

If being poisoned is to be a state of an animal, then the damage should be controlled by the animal, not by the poison object. So, forget everything I stated above. In Animal class, add:

You posted all these classes (excepting Speler and Sline_Koning) for what reason? I cannot be certain, but it might be the use of the GifImage class that is causing problems on the site.

Of course not. Only boolean values (true/false) can be #AND#ed (using '&&') Also, you do not want the actor to move only if both keys are pressed at the same time. You want "if either key is down", which means you need to #OR# ('||') the boolean values: <Code Omitted>

No. That code should be fine. Please present your current class codes in full.

One way to "fix" it is as follows (in Shot class): <Code Omitted>Although there is probably an easier way -- like having an intermediate class between World and the two space worlds (maybe

What about the Space2 class code?

Ok thx, didn't know that getRandomNumber also worked like that so that's my bad