Discussions

Thanks @Yehuda

Greenfoot has a method that creates a list of all the intersecting instances of the specified class. To cycle through all the intersecting instances of Block.class you would use the following: <Code Omitted>With the above code you can do something if there is a block at the specified coordinates.

Maybe this discussion can help.

thank you very much Super_Hippo what you have suggested to do, it work, thanks sssssssoooooo much. it is well appreciated, now all I have to do is the connected the administrative class to the gui.

I still using GF 2.3.0 USB stand-alone.

Incidentally, you can replace -48 with -'0' and it works well, as well as being perhaps a little less cryptic: <Code Omitted>

Try to use the setRotation method and then move(5) for every direction.

An integer is just a whole number so an easy int would be 1. What I'm basically asking is What is your question?

Thanks a lot! It Works!

As far as the given method: First, the image belongs to an instance of the class, so it cannot be a static method. Secondly, if the method returns an image, then why would you say it returns an int value (int should be GreenfoottImage). But, the method is already a part of the Actor class; you do not need to create, or re-create, it. In general: If the images are to be given to Food objects, then the fields should be located in the Food class and the Food class constructor should set one of the images to the created instances. The images can be put in an array to give each an index val

Thank You!

Thanks, works perfect

It must be on the classpath though it doesn't matter how. However, the usual environment variable for specifying a classpath is CLASSPATH, and I'm not sure if its value is used if a classpath is also specified on the command line (which the BlueJ script does) and furthermore the tools.jar file is not normally listed in the CLASSPATH environment variable. You could of course modify the bluej launch script so that it included a value from an envi

The rotation of a ball has nothing to do with the direction the ball travels. So turning upon collision or setting its initial rotation should not influence the movement of the ball. Your collision method has yet to be executed as it still needs to be called from somewhere. That being said, it is no wonder that you are having trouble with the bouncing as the value of 'isFall' is never changed (nowhere is it being set back to true and, since the collision method is not currently executing, it is never set to false). All your actor will do is fall.