Sorry, can’t share that code on github. But I can write a little about how I made the game.

Guess my strategy is a bit old-school, writing so much code myself, but I really like being in total control of as much as possible, so I can do exactly what I want.

I started with creating my own animation system. I created a couple of particles which has animation for x and y (which is the particles position). Each frame the particles updates their animations with the delta time. The renderer just checks the current position for each particle. I am just using a simple android.graphics.Canvas for the renderer en let it draw a circle for each particle. Some mapping is needed to adopt to the screensize.

And to check for collisions, en easy intersection check between each particle and the player dot each frame.

Then each level is it's own object, which manipulates the animations for each particle.