Merc and Envy Pathfinding - Evren 1998

Contains paths.c and paths.txt with pathfinding functions, direction and full-path queries, and examples using room predicates. Integration adds visited state to rooms and requires header and build changes.

License and attribution
The source permits use with its headers retained. Feedback by email is requested by the author. Preserve the original notices and applicable underlying game licenses.

Compatibility warning
Written for historical Merc-derived structures and tested by its author with Envy. Callers must manage returned path allocations correctly. This is an integration snippet, not a standalone program.

Historical software warning
Mudhaven has not compiled, boot-tested, or security-audited this material. Modern compiler and operating-system compatibility is unverified. Read the included notices before use; historical contact addresses may no longer work.

Pathfinding code and documentation by Jorge Ribeiro Pereira / Evren. Preserve the source headers and original notices.