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https://github.com/sbrl/Minetest-WorldEditAdditions.git
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51 lines
1.7 KiB
Lua
51 lines
1.7 KiB
Lua
--- Counts the nodes in a given area.
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-- @module worldeditadditions.count
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-- ██ ██ ███ ██ ███████
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-- ██ ██ ████ ██ ██
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-- ██ ██ ██ ██ ██ █████
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-- ██ ██ ██ ██ ██ ██
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-- ███████ ██ ██ ████ ███████
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function worldeditadditions.line(pos1, pos2, thickness, node_name)
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local pos1_sorted, pos2_sorted = worldedit.sort_pos(pos1, pos2)
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-- pos2 will always have the highest co-ordinates now
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pos1 = vector.new(pos1)
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pos2 = vector.new(pos2)
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local node_id_replace = minetest.get_content_id(node_name)
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-- Fetch the nodes in the specified area
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local manip, area = worldedit.manip_helpers.init(pos1, pos2)
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local data = manip:get_data()
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-- z y x is the preferred loop order (because CPU cache I'd guess, since then we're iterating linearly through the data array)
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local counts = { replaced = 0 }
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for z = pos2_sorted.z, pos1_sorted.z, -1 do
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for x = pos2_sorted.x, pos1_sorted.x, -1 do
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for y = pos2_sorted.y, pos1_sorted.y, -1 do
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local here = vector.new(x, y, z)
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local D = vector.normalize(
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vector.subtract(pos2, pos1)
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)
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local d = vector.dot(vector.subtract(here, pos1), D)
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local closest_on_line = vector.add(
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pos1,
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vector.multiply(D, d)
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)
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local distance = vector.length(vector.subtract(here, closest_on_line))
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if distance < thickness then
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data[area:index(x, y, z)] = node_id_replace
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counts.replaced = counts.replaced + 1
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end
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end
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end
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end
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-- Save the modified nodes back to disk & return
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worldedit.manip_helpers.finish(manip, data)
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return true, counts
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end
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