forked from VoxeLibre/VoxeLibre
master #8
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@ -480,7 +480,7 @@ minetest.register_entity(":__builtin:item", {
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end,
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get_staticdata = function(self)
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return minetest.serialize({
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local data = minetest.serialize({
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itemstring = self.itemstring,
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always_collect = self.always_collect,
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age = self.age,
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@ -488,6 +488,32 @@ minetest.register_entity(":__builtin:item", {
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_flowing = self._flowing,
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_removed = self._removed,
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})
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-- sfan5 guessed that the biggest serializable item
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-- entity would have a size of 65530 bytes. This has
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-- been experimentally verified to be still too large.
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--
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-- anon5 has calculated that the biggest serializable
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-- item entity has a size of exactly 65487 bytes:
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--
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-- 1. serializeString16 can handle max. 65535 bytes.
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-- 2. The following engine metadata is always saved:
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-- • 1 byte (version)
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-- • 2 byte (length prefix)
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-- • 14 byte “__builtin:item”
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-- • 4 byte (length prefix)
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-- • 2 byte (health)
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-- • 3 × 4 byte = 12 byte (position)
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-- • 4 byte (yaw)
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-- • 1 byte (version 2)
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-- • 2 × 4 byte = 8 byte (pitch and roll)
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-- 3. This leaves 65487 bytes for the serialization.
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if #data > 65487 then -- would crash the engine
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local stack = ItemStack(self.itemstring)
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stack:get_meta():from_table(nil)
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self.itemstring = stack:to_string()
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return self:get_staticdata()
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end
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return data
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end,
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on_activate = function(self, staticdata, dtime_s)
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