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Problem with press key

By Paciman, with 4 replies.
Last reply by danpost, 2 days ago:

Paciman wrote...

Could you maybe explain just the code you just wrote down. I would really appreciate i dont like writing things I don't understand

The first line was moved outside the method so the values can be retained (not reset every time the method is called). The second line was added to track the (last known) state of the "space" key. Line 6 checks to see if the state of the key had changed (either just pressed or just released). Line 8 updates the tracking field when a change in the state of the key is detected. Line 9 reverses gravity if the new state is the down state (ju

setImage doesn't work in World subclass

By BkS, with 2 replies.
Last reply by danpost, 2 days ago:

Actors use setImage and worlds use setBackground. However, I doubt you want this particular image to be tiled on your world's background. You probably should create an actor, give it this image to use and add it into the world. Another option is to use setText on the world; however, then you will not be able to control color, font and size.

World not instantiating

By genju, with 3 replies.
Last reply by genju, 2 days ago:

the problem is fixed now, i did the commenting thing but that wasnt what fixed everything.. for some reason i just needed to right click the class in the main screen and click new StartWorld(). not sure why that happened but atleast now i know what to do in case it happens again, thanks for the quick response dan

How can i push an object?

By svenfrijters, with 3 replies.
Last reply by danpost, 2 days ago:

In what class is the code given placed into? Line 3 looks like it takes an object of one type and places it in a field that holds a different type.

greenfoot导出的jar文件

By 旧城梦, with no replies.

错误: 找不到或无法加载主类 greenfoot.export.GreenfootScenarioApplication 原因: java.lang.NoClassDefFoundError: javafx/application/Application 请问这个问题，有人可以帮助一下吗？

greenfoot导出程序jar怎样运行？

By 旧城梦, with no replies.

在Windows 10，怎样将jar文件打开

How to I make "Gravity"?

By pio22mibi, with 2 replies.
Last reply by Gamingprotramp7, 3 days ago:

Gamingprotramp7 wrote...

private final int GRAVITY = 1; //gravity. to make it fall. Final int so it cant be changed unless you hard code it. private int velocity; //optional. makes it fall faster over time. makes it more realistic. public void fall() //fall. method for gravity to work { setLocation(getX(), getY() + velocity); //makes character fall depending on velocity if (isOnSolidGround()) //checks if boolean isOnSolidGround() is true { velocity = 0; //sets velocity to 0 if its on solid ground so the character doesnt fall through objects

Trouble with background

By Al3x7373, with 36 replies.
Last reply by danpost, 3 days ago:

Remove those two lines you just added. Below in 'public Sky()', modify these lines: <Code Omitted>

Is there a way to press a button and have the program quit completely?

By TylerBlair, with 1 reply.
Replied to by danpost, 4 days ago:

TylerBlair wrote...

I was wondering if there was a way that a user can press a key and then have the program quit. I know how the keypress works but I am just looking for what would come after that.

I think you want: <Code Omitted>

Getting a Variable from a Different Subclass

By Haylaylo11, with 4 replies.
Last reply by danpost, 4 days ago:

Haylaylo11 wrote...

As of right now, in the second segment of code, level is just returned as 0 instead of what the user inputs.

In liine 4, what does 'level.getLevel()' do?

Old Programs

By JetLennit, with 4 replies.
Last reply by nccb, 4 days ago:

As Danpost says, old Greenfoot scenarios used java.awt.Color. We've now moved to greenfoot.Color and added support for translation to Javascript, which means old scenarios won't run in newer Greenfoot, and won't run online, unless you can change the code to use greenfoot.Color. If you have old scenarios without source code, your two options are to run them locally in an old Greenfoot, or you might manage to decompile them and adjust the source. It's outside what we can help with, but if you search for Java decompiler, you can feed the JARs (available to download from us if you inspect HTML

what code do i need to make myself a highscore thingy?

By NotABoomer, with 3 replies.
Last reply by danpost, 5 days ago:

NotABoomer wrote...

and how do i amek the highscore appear in my "retry world"? i ofund some stuff, but thats in java, and not especially for greenfoot, and uses some code i havent learned before

Please refer to my Value Display Tutorial scenario.

Gegner soll Figur verfolgen

By AK28, with 5 replies.
Last reply by AK28, 5 days ago:

So there is one figur which places Walls and now I want that another figure should follow him and destroy the Walls after some time. Can you Help me?

how do i make my character "die" after getting out of the world?

By NotABoomer, with 6 replies.
Last reply by NotABoomer, 5 days ago:

it now is, thank you for your help :)

Score in GameOver World

By SemDeBakkero, with 26 replies.
Last reply by SemDeBakkero, 5 days ago:

THANKS it worked

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