All of the source code from my Remaking Cavestory in C++ youtube series can be found in this repository. Check the releases to view the source code at the state its in after each individual episode.
If you're looking for the assets for this project, please go to http://www.cavestory.org/download/cave-story.php, download the game, and look in the directory doukutsu/data.
If you need help with setting something up, compiler errors, or anything else related to this project, please do not hesitate to contact me! Post questions you have at http://www.reddit.com/r/limeoats.