mcl_buckets

Add an API to register buckets to mcl

mcl_buckets.register_liquid(def)

source_place: a string or function.
- string: name of the node to place
- function(pos): will returns name of the node to place with pos being the placement position
source_take: table of liquid source node names to take
itemname: itemstring of the new bucket item (or nil if liquid is not takeable)
inventory_image: texture of the new bucket item (ignored if itemname == nil)
name: user-visible bucket description
longdesc: long explanatory description (for help)
usagehelp: short usage explanation (for help)
tt_help: very short tooltip help
extra_check(pos, placer): (optional) function(pos) which can returns false to avoid placing the liquid. Placer is object/player who is placing the liquid, can be nil.
groups: optional list of item groups

This function can be called from any mod (which depends on this one)