Sprite size on different screen size Andengine Android

Question

` I am developing my first game in Android Adnengine. It\'s a racing game from top view. I used parallax background and some cars. I tested it on my device which is of sm

Answer 1

The thing about using a ratio resolution policy is that you can design your game to a particular size say 800x480 which is very popular for phones these days.

I think where most people stray is thinking they need to pull the current Display width/height and use that to initialize the engine.

The point of a ratio resolution policy - as I understand it - is you set your dimensions to hard coded values and let the ratio resolution policy handle the differences from one device to the next.

CAMERA_WIDTH = 800;
CAMERA_HEIGHT = 480;

//Toast.makeText(getApplicationContext(), CAMERA_WIDTH, 3);

mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
engine = new Engine(new EngineOptions(true,
        ScreenOrientation.LANDSCAPE, new RatioResolutionPolicy(
                CAMERA_WIDTH, CAMERA_HEIGHT), mCamera).setNeedsMusic(
        true).setNeedsSound(true));

Once you do things like this, then you only need to be sure your graphics and spacing look good at your pre chosen width/height - in this example 800 x 480. If everything works and fits and looks good, then the ratio resolution policy will take care of things when the device has a different screen size.

At least that my take on how it should work - I write for 800 x 480 and everything looks good on my 7" tablet too - granted that's not a major stretch.

Answer 2

According to my experience, I think that the best way to attack this issue is to deal with two major screen ratios (5:4, 5:3) which are popular in most of the devices.

You choose a high resolution for each ratio and let the engine scale down if the device screen size is smaller.

Answer 3

Fetch the height of the device and width and then algebraically make the sprite a percentage of the screen width and height.

Hope that helps.