114 lines
2.2 KiB
Lua
114 lines
2.2 KiB
Lua
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-----------------------
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-- Utility Functions --
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-----------------------
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ele.helpers = {}
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function ele.helpers.round(v)
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return math.floor(v + 0.5)
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end
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function ele.helpers.swap_node(pos, noded)
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local node = minetest.get_node(pos)
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if type(noded) ~= "table" then
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local n = table.copy(node)
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n.name = noded
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noded = n
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end
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if node.name == noded.name then
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return false
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end
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minetest.swap_node(pos, noded)
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return true
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end
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function ele.helpers.get_or_load_node(pos)
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local node = minetest.get_node_or_nil(pos)
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if node then return node end
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local vm = VoxelManip()
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local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
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return nil
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end
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function ele.helpers.get_item_group(name, grp)
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return minetest.get_item_group(name, grp) > 0
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end
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function ele.helpers.flatten(map)
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local list = {}
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for key, value in pairs(map) do
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list[#list + 1] = value
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end
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return list
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end
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function ele.helpers.get_node_property(meta, pos, prop)
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local value = meta:get_int(prop)
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if value == 0 or value == nil then
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local nname = minetest.get_node(pos).name
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local ndef = minetest.registered_nodes[nname]
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value = ndef["ele_"..prop]
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end
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if not value then return 0 end
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return value
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end
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-- Look for item name regardless of mod
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function ele.helpers.scan_item_list(item_name)
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local found = nil
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for name in pairs(minetest.registered_items) do
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local nomod = name:gsub("([%w_]+):", "")
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if nomod == item_name then
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found = name
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break
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end
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end
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return found
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end
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function ele.helpers.face_front(pos, fd)
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local back = minetest.facedir_to_dir(fd)
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local front = table.copy(back)
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front.x = front.x * -1 + pos.x
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front.y = front.y * -1 + pos.y
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front.z = front.z * -1 + pos.z
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return front
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end
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function ele.helpers.comma_value(n) -- credit http://richard.warburton.it
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local left,num,right = string.match(n,'^([^%d]*%d)(%d*)(.-)$')
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return left..(num:reverse():gsub('(%d%d%d)','%1,'):reverse())..right
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end
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function ele.helpers.state_enabled(meta, pos, state)
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if not state then
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state = meta:get_int("state")
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end
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if state == 0 then
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return true
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elseif state == 1 then
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return false
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end
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if state == 2 and meta:get_int("signal_interrupt") == 1 then
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return true
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elseif state == 3 and meta:get_int("signal_interrupt") == 0 then
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return true
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end
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return false
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end
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