Index and take length of tag lists like a table, 1-indexed. There are three
methods which may be used on tag lists:
list:iterate() - returns an iterator over the tags in the list
list:has(tag) - returns a boolean whether the tag is in the list
list.shares(list2) - returns whether two lists share a tag
"find" is also an alias to "has". Each method may be accessed from the global
taglist library too, e.g. taglist.iterate(list)
Tag lists may be compared with an equality operator too. This will tell you if
the two lists are composed of identical tags.
Accessible from sector.taglist, line.taglist and mapthing.taglist.
The global "tags" can be iterated upon for every unique tag which is set in the
level. If a tag is set on a sector/line/thing, it will be included. Taking the
length of "tags" will give you the number of these unique tags. (If a tag is
set on multiple sectors/lines/things, it will only be counted once though.)
For sectors, lines and mapthings, call the field "tagged". This function takes
one argument, which is the tag. The return value can be iterated over for all
the sectors/lines/things with that tag. The length can also be taken for the
number of such objects. If no argument is given, the global tag is default.
This is done through the new "registermetatable" function,
in a somewhat similar fashion to "freeslot" but for metatables:
it must be called at script load to tell SRB2 your metatable
can be automatically relinked during the unarchiving process.
* create new file lua_polyobjlib.c
* made a stub LUA_PolyObjLib function
* added META_POLYOBJ to lua_libs.h
* updated makefile, CMake and MSVC project files for lua_polyobjlib.c
* Array of 8 INT32's natively embedded into savedata (net and SP)!
* Initialised to zero whenever a new save (or equivalent) is started, otherwise untouched by the base game.
* Requires reservation to avoid clobber-conflicts.
* Access via `reserveLuabanks()` - returns a read-write userdata.
* Assign userdata to local variable or global rawset to use later.
Mostly for future SUGOIlikes, but I'm sure someone could figure out an unrelated usage eventually.
