I have added a new Blockmap search library! (with a new file: lua_blockmaplib.c)
Format of iteration function: searchBlockmap(searchtype, function, mobj, [x1, x2, y1, y2]). Returns true if search was uninteruppted, false if the iteration function returned true or false at any point
searchtype can be either "objects" or "lines", for looking for mobj_t and line_t stuff in the blockmap respectively
function is a function of your choice to iterate with:
format of function needed: funcname(mobj, foundmobj) or funcname(mobj, foundline) (for searching for objects and lines, respectively)
return value of function affects searching somewhat: nil doesn't change searching, false ends searching in a block (but doesn't stop searching, it just moves onto the next), and true ends the full search. Both returning true or false ultimately makes searchBlockmap return false.
mobj is the reference mobj that you're checking around (if you don't supply x/y ranges to search in, it defaults to checking within the mobj's radius in both axes). If mobj was removed mid-search the search stops and searchBlockmap returns false
(optional) x1, x2, y1, y2 are coordinates on the map to search the blockmap between, if given
