49 lines
1.2 KiB
Lua
49 lines
1.2 KiB
Lua
-- Returns the greatest numeric key in a table.
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function xdecor.maxn(T)
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local n = 0
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for k in pairs(T) do
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if k > n then n = k end
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end
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return n
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end
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-- Returns the length of an hash table.
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function xdecor.tablelen(T)
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local n = 0
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for _ in pairs(T) do n = n + 1 end
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return n
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end
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-- Deep copy of a table. Borrowed from mesecons mod (https://github.com/Jeija/minetest-mod-mesecons).
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function xdecor.tablecopy(T)
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if type(T) ~= "table" then return T end -- No need to copy.
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local new = {}
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for k, v in pairs(T) do
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if type(v) == "table" then
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new[k] = xdecor.tablecopy(v)
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else
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new[k] = v
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end
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end
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return new
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end
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function xdecor.stairs_valid_def(def)
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return (def.drawtype == "normal" or def.drawtype:sub(1,5) == "glass") and
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(def.groups.cracky or def.groups.choppy) and
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not def.on_construct and
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not def.after_place_node and
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not def.on_rightclick and
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not def.on_blast and
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not def.allow_metadata_inventory_take and
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not (def.groups.not_in_creative_inventory == 1) and
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not (def.groups.not_cuttable == 1) and
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not def.groups.wool and
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(def.tiles and type(def.tiles[1]) == "string" and not
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def.tiles[1]:find("default_mineral")) and
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not def.mesecons and
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def.description and
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def.description ~= "" and
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def.light_source == 0
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end
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