@bmanmcfly - 1 - I suspect it's a little late to rewrite the games using a games library, I'm not sure I'd enjoy writing the games that way either though that's a personal preference. 2- Is there no way of transferring the Graphic thing into an image and then resizing that. I'll admit it doesn't sound to performant but as long as I can get ~30 FPS I'd be happy. 3- Regards darkening the screen, would you know how to grab the graphics object into an image that I can then play with? 4- Regards images, I'm quite happy drawing but my problem is I can't work out what to draw that might fit into the game - it's set on a frozen world with cartoon style graphics, ice mountains in the background, snow falling and bubbles to shoot that float through the mist. The bombs I have currently look good and tell you that it's not a good thing running into them. The problem is that spherical bombs with fuses are unlikely to be found in space games.
@darkening - thanks for the example code but can I ask what video is?
I wish I could offer better knowledge on this...
1 - I understand that feeling, especially when it comes to the realization that you'd have to rewrite a significant amount of code, etc... There was a point when I felt the same way (I was writing c++ for directX, and realized that android / ios games was more realistic and achievable for me), I just went for the engine because then I wouldn't be starting over from scratch... that said, I do understand your desire to make a system for yourself, where you know how everything works with everything else.
2 - I wouldn't know a good way how to accomplish that, a strategy I might try might be something to the effect of, when the program starts, do a detection of the screen size and resolution, and then have a variety of the sprite sheets to handle some of the more common resolutions and then use that data to determine which assets to load... others probably will have better suggestions.
3- I'm not sure myself, I do know with the "sprite" class that libgdx offers, you can get the image and directly manipulate the alpha and other aspects of the image.... might be useful to check out the source they use to accomplish that. Otherwise, I'm afraid I'm little help here too.
4- Just throwing this out there, have you considered changing from the old school cartoon bomb to something like the ww2 era sea mines (they look like a sphere with a bunch of needles sticking out)??
I mean, that might still be unlikely in a space game, but it might be a bit less of an inconsistency....
alternatively, if you change it to something that looks more like a missile, or bomb dropped from a plane, maybe with a blinking light to signify 'danger'?
There's no real right or wrong here.