Discussions

In the Mover class, change your 'atWorldEdge' method to the following: <Code Omitted>Unless your world is unbounded, getX() will never be greater than getWorld().getWidth() - 1 and getY() will never be greater than getWorld().getHeight() - 1.

thank you, problem fixed.

Please refer to this disccussion thread.

Thank you very much! :) I tried "Rakete Held = getOneIntersectingObject(Rakete.class); " before, but i forget to transform the Actor object into a Rakete object.

Line 17 in the house class code creates a new 'warningDirty()' object and line 18 attempts to removes the one just created from the world (which in effect, does nothing, since it has not been placed in the world). The 'warningDirty' object that you already have in the world is not even mentioned in the 'if' block in question. The key words in the last sentence are "'warningDirty' object in world".

in this topic I already answered your question.

You must give the two methods different names. It's usually best to choose a meaningful name, so I'd suggest that rather than 'getX' you use 'getPlayer1' and 'getPlayer2'.

I changed ownership for all files in folder /usr/share/doc/Greenfoot/scenarios: sudo chown -R ruud:ruud scenarios After clicking Compile the world grid shows, which is what I was looking for. Thanks!

You could say "if location of actor is wherever, spawn whatever". The first two words answers your question.

Have a look into: http://www.greenfoot.org/doc/support_classes Maybe the animatedActor or GIFActor is what you want.

Thank you!

I'll look for that then, thanks

there is a method in Actor called turn(int angle) with a positiv value (angle) the crab will turn clockwise and with a negative value anticlockwise.

thank you very much :)