elepower/elepower_papi/helpers.lua

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2018-06-18 07:09:43 +00:00
-----------------------
-- Utility Functions --
-----------------------
ele.helpers = {}
function ele.helpers.table_copy(tab)
local retval = {}
for k, v in pairs(tab) do
if type(v) == "table" then
retval[k] = ele.helpers.table_copy(v)
else
retval[k] = v
end
end
return retval
end
function ele.helpers.round(v)
return math.floor(v + 0.5)
end
function ele.helpers.swap_node(pos, noded)
local node = minetest.get_node(pos)
if type(noded) ~= "table" then
local n = ele.helpers.table_copy(node)
n.name = noded
noded = n
end
if node.name == noded.name then
return false
end
minetest.swap_node(pos, noded)
return true
end
function ele.helpers.get_or_load_node(pos)
local node = minetest.get_node_or_nil(pos)
if node then return node end
local vm = VoxelManip()
local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
return nil
end
function ele.helpers.get_item_group(name, grp)
return minetest.get_item_group(name, grp) > 0
end
function ele.helpers.flatten(map)
local list = {}
for key, value in pairs(map) do
list[#list + 1] = value
end
return list
end
function ele.helpers.get_node_property(meta, pos, prop)
local value = meta:get_int(prop)
if value == 0 or value == nil then
local nname = minetest.get_node(pos).name
local ndef = minetest.registered_nodes[nname]
value = ndef["ele_"..prop]
end
if not value then return 0 end
return value
end