a7bb9496ae
Vanilla-faithful overworld generator (final_density + multi-noise biomes), full connection lifecycle (status/login/configuration/play), chunk streaming, creative block editing, and the protocol/nbt/registry infrastructure.
21 lines
587 B
Go
21 lines
587 B
Go
package server
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import (
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"crypto/md5"
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)
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// Profile is an authenticated (or, in offline mode, derived) player identity.
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type Profile struct {
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UUID [16]byte
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Name string
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}
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// OfflineUUID derives the stable offline-mode UUID for a username, matching
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// vanilla's java.util.UUID.nameUUIDFromBytes("OfflinePlayer:" + name): an
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// MD5-based (version 3) UUID with the IETF variant bits set.
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func OfflineUUID(name string) [16]byte {
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sum := md5.Sum([]byte("OfflinePlayer:" + name))
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sum[6] = (sum[6] & 0x0f) | 0x30 // version 3
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sum[8] = (sum[8] & 0x3f) | 0x80 // IETF variant
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return sum
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}
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