Hey,
Do you intend to port this to MorphOS? If not, can you provide a source to github, I know a person who will be willing to port it to MorphOS but would just need the source code.
First of all, thanks for your interest in BOH.
BOH is a 16-year old game: there are no plans for it.
No other ports will happen. Maintaining multiple versions is a costly undertaking, and the current versions are already too many (in fact, the Linux and MacOS versions have been retired). Time is better spent on creating new games.
The sources will not be made public, sorry.