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Problem with visualising multiple times during one act()

By 00swinter, with 1 reply.
Replied to by nccb, over 5 years ago:

You may want to try calling repaint() on the world after each step. By default Greenfoot only repaints after each act() round.

reference classes

By Patdumas77, with 2 replies.
Last reply by danpost, over 5 years ago:

rocket770 wrote...

If your Play Class is an object in the world you can reference it by this: Play play = getWorld().getObjects(Play.class).get(0); And now you should be able to access its attributes with for example play.PlayPause();

Typecasting is required for that assignment to be effective: <Code Omitted>

How to make an Actor(numbers of Actor) equal X?

By Kulo, with no replies.

So I made a zombie game where the zombies follow the Survivor(see below) but now I added the feature that zombies spawn and because of that the code has stopped working. So the question is how to make the Zombies equal X to make it work. Sorry for the bad desription. Thanks for your suggestions. <Code Omitted>

How do i have multiple levels?

By MrSkyPanda, with 1 reply.
Replied to by rocket770, over 5 years ago:

If you're checking a certain spot you can use it's X and Y Coordinates you can use this in your Character class: If(getX() == xlocation && getY() == ylocation){ Greenfoot.setWorld(new WorldNameHere()); } Where xlocation and ylocation are the coordinates of the spot you want to change the world. Alternatively, you can use an object that will change the world on collision. In your character class you add this line of code: If(isTouching(ObjectCLassName.class)){ Greenfoot.setWorld(new WorldNameHere()); }

Static int won't decrease.

By ItzLukeStorm, with 4 replies.
Last reply by Roshan123, over 5 years ago:

getMicLevel does not work

By Mannu, with no replies.

In the Greenfoot book task 3.32 the method Greenfoot.getMicLevel should be used. While the sound-recorder and so my micrphone work, the method does not give any return value higher than zero. Can anybody help me to make the method work?

Making a png transparent

By Roshan123, with 9 replies.
Last reply by Roshan123, over 5 years ago:

I just wanted to know that is it possible to do something after drawing in the background of the world And i got the answer thanks to both of the genius!!!

How to achieve slow transitions ?

By Paul12345, with 3 replies.
Last reply by danpost, over 5 years ago:

Looks like you are trying to hog the CPU to slow down the execution. Well, if successful, you would only achieve what using delay would do -- slow everything down. Remove the method and post class that called it.

Username123456789

Greenfoot.Bee scenario

By Username123456789, with 16 replies.
Last reply by danpost, over 5 years ago:

Username123456789 wrote...

so it looks like this? << Code Omitted >> instead of "private void stats"

No. Utter confusion. Why would you have bee lives in the Spider class?

Greenfoot read file error window

By javaNewbie246, with no replies.

I have a program for my college final that I am having issues with, I have so far that on a key press, it should begin to read from a txt file for location information about birds and where to place them in the world, however when I press the key, I get a null error and a seperate error window pops up and simply repeats some method returns I have that state the birds health and infection count. if anybody knows what I have wrong please let me know. Below are the image of the error window and code I have that I believe to be in question.<Code Omitted>

Working wall

By iDragon3o6, with 3 replies.
Last reply by Gbasire, over 5 years ago:

You can do a simple thing to make some collisions in the player class, add this : <Code Omitted>it will basically check where you were the second before touching the wall and warp you back there

Can I create GUI for my game?

By Honza, with 10 replies.
Last reply by Roshan123, over 5 years ago:

And what for blue Its not working

Ohhhh.... It will never work becaz i never gave u the code for blue button If u have further more doubts then creat ur own discussion

How to use setVolume() to control volume?

By akiki, with 1 reply.
Replied to by danpost, over 5 years ago:

Apparently, you do not understand what it means when you make a class extend another (subclassing). A subclass is to describe the same type object as its parent class. Since a VolumeUp object is NOT a Start object, neither should extend the other. A subclass usually describes the object more precisely. The Object class is the root of ALL classes. Classes describe objects. The Actor class, which extends Object, describes any generic actor. All its subclasses will describe some actor type more specifically. Actor might be subclassed by

One Actor in multiple worlds

By JetLight, with 1 reply.
Replied to by RcCookie, over 5 years ago:

That’s no problem. Just use addObject to add the actor to the different world. It will automatically be removed from the old world, but all of its values will not be changed. You can simply add it back into the main world at a later point

Greenfoot shooting

By Xarloz, with 1 reply.
Replied to by danpost, over 5 years ago:

Well, you cannot use rotation of survivor as it is always zero. You cannot use the set image as you are creating new ones every act cycle. That, in itself is not good as image processing is a hog on CPU time. I noticed, also, that you are allowing 8-way movement, but only use 2 images. Your actor only looks left or right. Are those the only directions allowed for a projectile?

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