Discussions

@Blake1996, Zamoht used the method at line 5 of the 'act' method given. His 'isOffScreen' method is similar to the 'atWorldEdge' method supplied in the 'Animal' class (if you are familiar with that). If the incoming objects that need to be avoided travel only one way across the screen then only the particular edge you want to remove the objects at need to be checked. So, basically, if they are added at the right edge and move across to the left, you could use: <Code Omitted>You would put this line in the 'act' method of the class that creates

No. You could use an int field to track windspeed and have it vary randomly. Then, when the difference between the speeds of the plane and wind are greater than a certain amount, create the shake; and if the difference is less than a certain amount, create loss of lift (if you want). If doing the lift thing, you will need an instance int field for it, too.

Thank you so much!

Thanks

Never mind, found the problem, a simple typo.

Just manually create a new 'start screen' world to make it be the first to show.

I was just saying that with the Text class as I have given it, you can use it for, let us say: (1) a wave text object (2) a score object (3) a message object (4) a highscore object all at the same time. My 'Pong Pinball' scenario has a Text class that is used twice in the Arena world class and twice more in the Paddle class to create four different Text objects. Download it and review the code to see how it works.

Thanky, but because I painted an own image, which is only black they don't look like buttons any more. I didn't know that JLabels can be used as buttons, too, but I don't want to change it all, because all 64 fields (I have made a class "Feld" for them) are JButtons and in the GUI class they aren't saved in an array or a list like I wanted that first. I've enumerated them like: JButton jButton1 = new JButton(); JButton jButton2 = new JButton(); JButton jButton3 = new JButton(); That's very ugly, but I don't have much experience with that. My try to use an Array and to save them with a

thanks

Do you need anything else to be displayed at the same time as the button to start? If not, just have the button intiialise the rest of the actors etc when it is clicked. Otherwise, you need to have the actors check whether the scenario is running (according to your own criteria) before they do anything. For instance, you could have a variable in the world which is true if the scenario is running (your object has been clicked) or false if not.

The simplest thing to do would be to remove all objects, clear the background and draw the message on the background itself.

I dont know much about it, too, but wouldn't the normal linux package work?

With the way I suggested above, the healthbar will be removed at the time the enemies object who owns it is removed.

The Balloons and LunarLander scenarios are just sample projects that come with the Greenfoot download. Tutorials are not included with/for those scenarios.

Or I put line 5 and line 7 together to one if-statement. Thank you, I understood now whats wrong with it. It works now.