Discussions

You can check my Pac-Man game here: https://www.greenfoot.org/scenarios/19573 It is pretty similar to the original one and you can view the source. However, it is mostly in German. The code for the ghosts is located in the Geist class.

<Code Omitted>would check top center of the collector. You may want to also check the height of the trash above ground -- make sure it is within a specific range (minimum range would be fall speed of trash) before collecting it (before the catch is executed).

Any reason why it has to be checked in the Block class code instead of the Leaf class code? In the Leaf class, it can simply be: <Code Omitted> To do what danpost said, it will look like this: <Code Omitted>

The getWorld method is an Actor class method. You cannot execute it on a World object. Anyway, the code from line 23 to line 28 appears to be something an oil object might want to do -- not the World object.

You are still trying to execute the spawning code prior to the ArraySelection actor being put in the world. Make use of the Actor class method called addedToWorld.

First, there is no need for any of the boolean fields. In fact, as soon as you change levels, they all become false again, anyway. Second, you can add the door at the moment the coin counter reaches 5: <Code Omitted>Lastly, you can check the level when changing worlds:

Thank you!

You'll have to put those if statements in the act method of the world, since the constructor is only called once when the world is declared. You'll want to be continuously checking if the space button is pressed, not only once.

Please show entire class codes.

It would probably take a member of the greenfoot team to confirm, but I get the distinct feeling the answer is no. Before they went to javascript and having their own Color and Font classes, my TextImage support class would allow GreenfootImage objects to be created using a specified font. Unfortunately, it is now pretty much obsolete.

Okay, so i had made a new static int PO and now its working fine. Maybe it was a bug from Greenfoot

Download the book scenarios. All crab scenarios in chapter02-04 have it.

The line: <Code Omitted>mirrors the current image. When executed again, it mirrors that mirrored image. Etc. You will either have to keep track of whether each image in each array is already mirrored or not OR keep and use the mirrored images in separate arrays.

Finally it works. Thank You I just typed public static final before GreenfootSound and now everything works fine. Chapter closed! :D

??? Better or easier than what? I do not see any codes either checking for no orcs or for changing levels?