forked from mtcontrib/Minetest-WorldEdit
48 lines
1.4 KiB
Lua
48 lines
1.4 KiB
Lua
worldedit = worldedit or {}
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local minetest = minetest --local copy of global
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--executes `code` as a Lua chunk in the global namespace, returning an error if the code fails or nil otherwise
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worldedit.lua = function(code)
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local operation, message = loadstring(code)
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if operation == nil then --code parsing failed
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return message
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end
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local status, message = pcall(operation)
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if status == nil then --operation failed
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return message
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end
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return nil
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end
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--executes `code` as a Lua chunk in the global namespace with the variable pos available, for each node in a region defined by positions `pos1` and `pos2`, returning an error if the code fails or nil otherwise
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worldedit.luatransform = function(pos1, pos2, code)
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local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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local factory, message = loadstring("return function(pos) " .. code .. " end")
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if factory == nil then --code parsing failed
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return message
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end
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local operation = factory()
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--make area stay loaded
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local manip = minetest.get_voxel_manip()
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manip:read_from_map(pos1, pos2)
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local pos = {x=pos1.x, y=0, z=0}
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while pos.x <= pos2.x do
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pos.y = pos1.y
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while pos.y <= pos2.y do
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pos.z = pos1.z
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while pos.z <= pos2.z do
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local status, message = pcall(operation, pos)
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if status == nil then --operation failed
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return message
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end
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pos.z = pos.z + 1
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end
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pos.y = pos.y + 1
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end
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pos.x = pos.x + 1
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end
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return nil
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end |