Discussions

Absolutely. A boolean field could be used to display two different dialogs, which may be fine in your case. You can display the second one over and over after the first or you could alternate between the two. On the other hand, you coul

Ok. Your problem is that 'getKey' will only return a keystroke once. If 'space' is pressed and is returned by 'getKey' in your world class code when checking for 'enter', then 'getKey' will not return 'space' when checking for 'space'. You can only feasibly use 'getKey' once during any act cycle (a cycle being the acting of the world and the acting of all objects in that world). Either you need to save the returned value in a field in the world class and check the value of that field when checking for 'space' in the other class, or you need to use 'isKeyDown' for one (or both) of them. Un

You probably have a 'getValue' method in the counter class and can use 'scoreCounter.getValue()'.

In line 54, you have 'if not "d" down is false'. That could screw up the works (it is not similar to the code at line 26).

Do you know how to use the class documentation pages? Each class describes, in detail, what each member (field, constructor, or method) does. You can use it to trace from one class to another to find what you need or learn.

I was quite specific in what I said here as far as where the code should go. Also, there is already an 'isTouching' method in the Actor class. Please review its documentation here.

Thank you soo much, it fixed the problem.

Your code is equivalent to this: <Code Omitted>Briefly explaining, lines 3 and 7 of your code create loops that iterate through only once (after the first iteration, 'i' is incremented to 1 and the condition fails, causing the loop to terminate.

That's the same as using 'if (UserInfo.isStorageAvailable())...'. With java 8 on the greenfoot site, it returns false. 7.71

ok, thanks

I could not have explained it any more clearly.

That would be a World instance method -- the 'addObject' method. The method will place an actor in the world whether it is already in a world or not (provided it is not already in the world you are trying to add it into). For example, if you had a Level1 world with an Actor mainActor, you can simply create a new world and add the actor into it: <Code Omitted>L

The Explosion class of the lunar lander scenario is quite portable. You only need add the class to your project and create a new Explosion object when needed. You will need the 'explosion.png' image added to your 'images' folder of the scenario as well.

Thanks for the help with this. As someone pretty new to this, the step by step was pretty helpful.

Yeah, I had thought about that -- like the vehicle spinning out of control racking up the lap count. I did not think that would be an issue here (though, I could be wrong). Using checkpoints is a good idea, however (just more code to deal with).