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47 lines
1.6 KiB
47 lines
1.6 KiB
1 year ago
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local ipairs, setmetatable, tostring, print
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= ipairs, setmetatable, tostring, print
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local minetest, vector
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= minetest, vector
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local mod_name = minetest.get_current_modname()
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local utility = {}
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-- Prints an error message by concatenating the parameters as strings.
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function error(...)
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local str = "[" .. mod_name .. "] "
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for _, v in ipairs({...}) do str = str + tostring(v) end
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print(str)
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end
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utility.error = utility
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if not vector.convert then
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function vector.convert(v)
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local t = type(v)
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if t == "number" then
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-- Assume the number was created by calling `vector.hash`.
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return setmetatable(minetest.get_position_from_hash(v), vector.metatable)
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elseif t == "string" then
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-- Assume the string is either in `(x, y, z)` or `{x=x, y=y, z=z}` format.
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local first_chr = v:byte(1)
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if first_chr == "(" then return vector.from_string(v)
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elseif first_chr == "{" then return setmetatable(minetest.deserialize(v), vector.metatable)
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else error("Cannot convert string '" .. v .. "' to vector") end
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elseif t == "table" then
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-- Assume the table already has `x`, `y` and `z` entries.
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-- Returns the same table, making sure its metatable is set.
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return setmetatable(v, vector.metatable)
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else error("Cannot convert type '" .. t .. "' to vector") end
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end
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end
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if not vector.hash then
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function vector:hash()
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return minetest.hash_node_position(self)
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end
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end
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return utility
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