So a few years ago i entered a programming contest for fuze 4 for nintendo switch and made my Retrotime game. then i ported it to c++ and SDL and now i ported it to C and the playdate SDK. The conversion from C++ to C was a real pain as the game initially made use of a lot of classes and polymorphism. After about 2-3 weeks of tedious work i had the basics working in C in a windows version at 400x240 resolution with black and white dithetered graphics. to Get the dithered graphics i modified the windows (color) version to add a bayer dithering algoritm which i could modify in real time as well as dump (save) all scaled graphics to disk so i did not had to rely on real time scaling on the playdate (which is slow) but could just load the prescaled graphics. After i had done that it only took me about 2-3 days to convert the C windows SDL(2) based game to C and the playdate api. It's generally not that hard to port a sdl2 based game to playdate sdk as long as the game in question mostly worked with images and did not do anything fancy related to realtime editing of the graphics buffer. Luckily i never do that.
Anyway i've made a video of progress so far but the game is not finished yet. I'm targetting 30 fps, while the game initially ran at 60 fps. Playdate seems capable of achieving this speed in my game as long as i build a Release optimized version (with -O3). Speeds differ per game though but i'll lock them all at 30 fps.
