I am currently starting a game engine in Android, first forray onto the platform and have the basics in place however i am unsure of the best way to approach resolution independence when using SurfaceView to draw graphics.
Looking for pointers as to how to keep the game / sprites etc all looking the same independent of the screen, obviously it wouldn't be efficient to scale all the sprites every frame or store many variations for differing resolutions
There are two simple approaches:
First:
On creation of a Surface view, it calls:
onSizeChanged (int w, int h, int oldw, int oldh)
Create a few global variables, x & y so if you override this with:
onSizeChanged(int w, int h, int oldw, int oldh){
this.w=w;
this.h=h;
}
Then in any drawing or game calculations you can use the window w and h.
Second:
call getWidth() & getHeight() in drawing and game calculations.
Good luck with your game!
You'd just scale the sprites when you load them. I am guessing you're loading them as Bitmaps from a Resource, right? If that's the case then all you need to do it something like this:
BitmapFactory.Options options = new BitmapFactory.Options();
options.outHeight = spriteHeight * scale;
options.outWidth = spriteWidth * scale;
Bitmap sprite = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.sprite, options)
Where scale is based on the change of the screen size.
I also need to do this and am confused about the inDensity and inTargetDensity parameters.
inTargetDensity = screen density of the current device running the application. I get how you can retrieve that using metrics.densityDpi.
However, what is inDensity? The density of the particular resource based on the folder it was in? How do you get the density of a resource?