Enigma Source (svn, archived)

- add st_barrier to block actors with critical items in their inventory:
- attribute "flavor" with kind of item to be blocked, or "all"
- just portable items are valid kinds
- "it_umbrella" blocks protected actors, too
- "it_cherry" blocks invisible actors, too
- "it_drop" blocks ac_rotors, too
- this stone can not be swapped or pulled
- this stone blocks a flood
Note:
- images still preliminary and partially missing