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Wrong Answer to a problem?

By kiarocks, with 2 replies.
Last reply by danpost, over 13 years ago:

Another way to handle this is simply <Code Omitted>This will always return the remainder portion of the division. As short as this is, dropping the method and using (i % i2) in the calling method might be preferable.

Exceptions Help

By Countertenor, with no replies.

Hello I need help. I must build an own exception with greenfoot. My idea is, that i will create a new greenfoot image, but the .png is not in the ordner. The exceptions must say that is not they, and the second solution are, that it can be search or choose a nother .png file.<Code Omitted>

Help with getNeighbours

By ajh267, with 1 reply.
Replied to by davmac, over 13 years ago:

Briefly, you first want to import the List interface (at the top of your class): <Code Omitted> Then you do something like: <Code Omitted> Hopefully that's enough to get you started!

"Animation" Help

By ChrisIsOsmer, with 1 reply.
Replied to by ChrisIsOsmer, over 13 years ago:

Well, I have finally figured out a way. Problem is I'm not sure how to delete this post so for now it will remain haha.

About the Class MouseInfo

By Upupzealot, with 3 replies.
Last reply by Upupzealot, over 13 years ago:

Greenfoot.getMouseInfo() can return null. When it does, your 'mouse' variable will contain null, and then mouse.getX() fails with a NullPointerException, because you have no 'mouse' object. In general, you should call getMouseInfo after a mouse event, such as mouseClicked.

Thank you! Now I undersdand! Another question about mouse event, how can I find out if the mouse is hold on sth. I tried to figgure it out by getX() and getY(),is there some good iead?Thanks

New in Greenfoot, can Greenfoot_Promgrams read datas from a file?

By Upupzealot, with 6 replies.
Last reply by Upupzealot, over 13 years ago:

danpost wrote...

I think that the discussion On creating and saving files (http://www.greenfoot.org/topics/195) will answer your question.

I tried and it works, thanks

Mouse info?

By darkmist255, with 4 replies.
Last reply by darkmist255, over 13 years ago:

Thanks for all the help! I put a new public void called CheckMouse in ball.class and called it in Act(), and it worked perfectly . I also am making a limit to the ball count so that it doesn't lag. For some odd reason though, this isn't having the effect I thought it would. if(ballCount < 6) { getWorld().addObject(new Ball(), mouseX, mouseY); ballCount = (ballCount + 1); }

Crab Game Programming Question

By 2woodsway, with 1 reply.
Replied to by mik, over 13 years ago:

It's hard to tell without seeing what you did. Can you show us the code snippet that you think should make your variable change?

DjDiamondImport

Code for a downwards scrolling background

By DjDiamondImport, with 1 reply.
Replied to by mik, over 13 years ago:

There is a demo for a side scrolling background here: http://www.greenfootgallery.org/scenarios/243 You could look at this and adapt it to scroll vertically.

Getting <identifier> expected error

By toro, with 2 replies.
Last reply by delmar, over 13 years ago:

Good that you found it. One thing to keep in mind is that the error message is not always very precise or helpful - looking around the area of the error often shows what's wrong.

Alternatives to Greenfoot.delay()?

By craigC, with 5 replies.
Last reply by darkmist255, over 13 years ago:

Code for a counter!!!

By ChrisEthridge, with 1 reply.
Replied to by ez4u2c, over 13 years ago:

Take a look at this tutorial which does exactly what you are describing. http://www.greenfoot.org/doc/howto-1

How do I prevent the scrolling on the view of the scenario?

By kram6373, with no replies.

I can't go full screen with my scenario window. It starts like this. I've tried uninstalling and reinstalling. Still doesn't change. Please help!!

Image

By Canning, with 37 replies.
Last reply by kiarocks, over 13 years ago:

Intersections

By hesh, with 3 replies.
Last reply by jyatiz, over 13 years ago:

I want to use the following code to detect when an object is in the cell, however it´s and it seems to loop back and forward as it turns around once it gets past the grass object if (puedoMover(getX(), getY()) == true && zacate != null){ girarMediaVuelta(); } public void girarMediaVuelta() { // Quiz #1 switch(getRotation()) { case ESTE: setRotation(OESTE); break; case SURESTE: setRotation(NOROESTE); break; case SUR: setRotation(NORT

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