95 lines
2.3 KiB
Lua
95 lines
2.3 KiB
Lua
--[[
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TechAge
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=======
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Copyright (C) 2019 Joachim Stolberg
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LGPLv2.1+
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See LICENSE.txt for more information
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Helper functions
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]]--
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-- for lazy programmers
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local S = function(pos) if pos then return minetest.pos_to_string(pos) end end
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local P = minetest.string_to_pos
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local M = minetest.get_meta
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-- Load support for intllib.
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local MP = minetest.get_modpath("techage")
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local I,_ = dofile(MP.."/intllib.lua")
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function techage.range(val, min, max)
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val = tonumber(val)
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if val < min then return min end
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if val > max then return max end
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return val
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end
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function techage.one_of(val, selection)
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for _,v in ipairs(selection) do
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if val == v then return val end
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end
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return selection[1]
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end
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function techage.get_node_lvm(pos)
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local node = minetest.get_node_or_nil(pos)
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if node then
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return node
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end
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local vm = minetest.get_voxel_manip()
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local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
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local data = vm:get_data()
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local param2_data = vm:get_param2_data()
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local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
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local idx = area:index(pos.x, pos.y, pos.z)
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node = {
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name = minetest.get_name_from_content_id(data[idx]),
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param2 = param2_data[idx]
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}
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return node
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end
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--
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-- Functions used to hide electric cable and biogas pipes
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--
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-- Overridden method of tubelib2!
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function techage.get_primary_node_param2(pos, dir)
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local npos = vector.add(pos, tubelib2.Dir6dToVector[dir or 0])
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local param2 = M(npos):get_int("tl2_param2")
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if param2 ~= 0 then
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return param2, npos
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end
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end
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-- Overridden method of tubelib2!
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function techage.is_primary_node(pos, dir)
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local npos = vector.add(pos, tubelib2.Dir6dToVector[dir or 0])
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local param2 = M(npos):get_int("tl2_param2")
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return param2 ~= 0
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end
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-- returns true, if node can be dug, otherwise false
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function techage.can_node_dig(node, ndef)
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if not ndef then return false end
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if node.name == "ignore" then return false end
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if node.name == "air" then return true end
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if ndef.buildable_to == true then return true end
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if ndef.diggable == false then return false end
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if ndef.after_dig_node then return false end
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return true
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end
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-- returns the node name, if node can be dropped, otherwise nil
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function techage.dropped_node(node, ndef)
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if node.name == "air" then return end
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if ndef.buildable_to == true then return end
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if ndef.drop == "" then return end
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return ndef.drop or node.name
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end
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