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I am having a problem adjusting the size of the screen while using the ScalableGame class from the Slick2D library.

I would like the background and objects (images and graphic shapes) to adjust to fit the screen size whenever the display size changes.

This is how the state looks by default. I can change the screen size, but the objects do not.

appGameContainer = new AppGameContainer(
     new ScalableGame(new AppStateController(), Settings.video.getWidth(), Settings.video.getHeight(), true)
);
appGameContainer.setDisplayMode(Settings.video.getWidth(), Settings.video.getHeight(), Settings.video.isFullScreen());
appGameContainer.start();

enter image description here

If I add a value of 100 to the width and height in the ScalableGame constructor call, the state looks like this:

appGameContainer = new AppGameContainer(
     new ScalableGame(new AppStateController(), Settings.video.getWidth() + 100, Settings.video.getHeight() + 100, true)
);
appGameContainer.setDisplayMode(Settings.video.getWidth(), Settings.video.getHeight(), Settings.video.isFullScreen());
appGameContainer.start();

enter image description here

If I add a value of 100 to the width and height of the display, the state looks like this:

appGameContainer = new AppGameContainer(
     new ScalableGame(new AppStateController(), Settings.video.getWidth(), Settings.video.getHeight(), true)
);
appGameContainer.setDisplayMode(Settings.video.getWidth() + 100, Settings.video.getHeight() + 100, Settings.video.isFullScreen());
appGameContainer.start();

enter image description here

Here are some more screenshots that demonstrate the problem:

enter image description here enter image description here enter image description here

Do you know what might be causing the problem?

share|improve this question

1 Answer 1

up vote 0 down vote

Found a link that helped me, I'm not sure we're having the same problem but it's worth looking at as my game is working perfectly now.

http://slick.ninjacave.com/forum/viewtopic.php?t=6184

your render method should look something like this...

public void render(GameContainer gc, Graphics g)
{
    float desiredWidth = whatever;
    float desiredHeight = whatever;
    float originalWidth = whatever;
    float originalHeight = whatever;

    g.scale(desiredWidth / originalWidth, desiredHeight / originalHeight);

    //render all your images and whatnot

    g.scale(1,1);
}
share|improve this answer
    
Alright so you think, that I should, before I call each graphic object at the first line of a render method, call g.scale(); but how do you calculate x, y ? –  nellykvist Nov 5 '13 at 16:02
    
Ye but, what would be desiredWidth, desiredHeight ? –  nellykvist Nov 10 '13 at 21:43
    
Whatever you want the height/width to be after you scale it. –  user2144536 Nov 12 '13 at 16:22
    
Check my topic post, where I show you problem I have with scaling. –  nellykvist Nov 13 '13 at 12:33

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