Porting my Rubido (playdate version) to Bangle JS2 (chinese checkers / solitaire game)

I started on a 2nd project as well, porting my Rubido game to the bangle js2. Rubdio is a little chinese checkers / solitaire game.

The aim of the game in chinese checkers is to select a peg on the board and jump over another peg to land on an empty spot. When doing this the peg you jumped over will be removed from the board. You need to play the game in such a way that only one peg remains on the board at the end. Depending on the difficulty you had chosen this can be either (only) in the middle of the board or anywhere on the board. Also depending on the difficulty you had chosen you can either jump horizontally and vertically over pegs or diagonally as well.

I made a little gif to show case it. It was initially made with dark theme in mind, but i modified the game to let it use 1 bpp images. Luckily the tiles were 16x16 so they are byte aligned for using the frame option op drawImage

I had a hard time optimizing the game, it does not do full screen redraws, thats way too slow anyway, but it only redraws & clears certain parts. But the issue was not with the drawing i had, but calculating moves left after each move. Initially this took 5 seconds on the bangle js2, with same optimasations i managed to make it 3 seconds. Then i tried compiling certain function to C and reduced the slowness even more it now sits at about 800 - 1000ms after doing a move (including drawing) and i really have no idea how to improve that further. The "compile" statement in the beginning of a function really helps a lot. But i had an issue with arrays & objects with it where the compiler did not report a failure during compilation but the function just did not work as expected, but i managed to solve that by directly using the array to access things instead of returning an object from some other function call.

Anyway without further waiting here is a little preview in the form of a gif