Discussions

Why don't you ask your question here?

It doesn't have a yes/no option, but in general, Greenfoot.ask() is easier than JOptionPane. In modern versions of Greenfoot there are issues to do with window ordering if you try to use dialogs in your code.

<Code Omitted> Then you have several options. You can check for a click here in this class. Then either send it to somewhere else to check with the list or check it from here. Or you check for the click on this object from somewhere else.

"static" can be translated with "belonging to a class". Static variables are shared with all members of the same class. If every object of the same class has its own value for the variable, it can't be static. It is basically the same for methods. Methods can be static when they don't use anything non-static. For example a method like "getX()" is not static, so you can not use "ClassName.getX()". An Actor is in the world and has its X-coordinate. If there are several Actors of this class in the world, each of them wants to move separately. To use a non-static method, you need to call the metho

Instead of spawning an array of 7 or so asteroids at a time, would it not be easier to just spawn one at a time at regular intervals? That would avoid the mess of having to know when to spawn again.

Well, the problem is the "while". No matter what counter is at the beginning of the act method (1000 at the beginning or 60 every other time), it will be 0 after line 22. And yes, the act method is called around 50-60 times a second when the speed slider is at 50.

THANK YOU the reference is needed for sth. later on but im glad you helped me there this school project was about to stress me out since i have limited time and i needed that rly fast to keep on going with the rest.

The character's direction of movement can be used to determine that. If character had moved up (dy < 0) then any obstacle encountered would be above the character.

I am now trying to make the zombies recognize the objects of the world. I thought about using isTouching like I did for the character except that I don't know what to put after the isTouching for the zombie for it to continue moving. I thought you might

Remove the '+1'. The last element is indexed one less than the length of the array (since counting starts at zero).

Process the level change in a different method (other than the act method). The act method is called continuously by greenfoot while the scenario is running; other method are only called when needed.

Okay, you can either check the location of the mouse when it is clicked, and act upon it if in one of the specified areas, or you can add "hit-box" actors into the world and check for clicks on them. Now, what exactly do you mean by change the health bar if it was created in greenfoot? and when would you want to do it?

I agree that your response fit the question. I just felt clarity was important. Some of those new to greenfoot take a while to get things (if at all). Not saying this is one of them.

Extending is not used for providing access -- it is only used for inheritance. Getting references and using public methods (or fields) provide access. You will have to provide details for quick decent help.