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https://github.com/sbrl/Minetest-WorldEditAdditions.git
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14 lines
495 B
Lua
14 lines
495 B
Lua
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--- Parses a chance value, and returns the 1-in-N value thereof.
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-- @param str string The string to parse.
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-- @returns number|nil The 1-in-N chance if parsing was successful, otherwise nil.
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function worldeditadditions.parse.chance(str)
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if tonumber(str) ~= nil then return tonumber(str) end
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if str:sub(#str) == "%" then
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local result = tonumber(str:sub(1, #str-1))
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if result == nil then return nil end
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return 1 / (result / 100) -- Convert percentage to 1-in-N chance
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end
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return nil
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end
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