Minetest-WorldEditAdditions/worldeditadditions/utils/nodes.lua
Starbeamrainbowlabs 2a592a808c
Finish bugfixing //forest!
moretrees still doesn't work with it though, and I don't understand 
why....
2020-09-14 01:19:15 +01:00

49 lines
1.6 KiB
Lua

--- Makes an associative table of node_name => weight into a list of node ids.
-- Node names with a heigher weight are repeated more times.
function worldeditadditions.make_weighted(tbl)
local result = {}
for node_name, weight in pairs(tbl) do
local next_id = minetest.get_content_id(node_name)
-- print("[make_weighted] seen "..node_name.." @ weight "..weight.." → id "..next_id)
for i = 1, weight do
table.insert(result, next_id)
end
end
return result, #result
end
--- Unwinds a list of { node = string, weight = number } tables into a list of node ids.
-- The node ids will be repeated multiple times according to their weights
-- (e.g. an entry with a weight of 2 will be repeated twice).
-- @param list table[] The list to unwind.
-- @return number[],number The unwound list of node ids, follows by the number of node ids in total.
function worldeditadditions.unwind_node_list(list)
local result = {}
for i,item in ipairs(list) do
local node_id = minetest.get_content_id(item.node)
for i = 1, item.weight do
table.insert(result, node_id)
end
end
return result, #result
end
function worldeditadditions.registered_nodes_by_group(group)
local result = {}
for name, def in pairs(minetest.registered_nodes) do
if def.groups[group] then
result[#result+1] = name
end
end
return result
end
--- Turns a node_name → weight table into a list of { node_name, weight } tables.
function worldeditadditions.weighted_to_list(node_weights)
local result = {}
for node_name, weight in pairs(node_weights) do
table.insert(result, { node_name, weight })
end
return result
end