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Implement persistent hardcore death bans (XUID + IP) for dedicated server

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On the dedicated server, hardcore death now persists XUID and IP bans to
banned-players.json and banned-ips.json via the Access system, and
disconnects the player. Bans survive server restarts. Client-hosted games
retain the existing in-memory XUID ban with force-save behavior.

- Add hardcore property to server.properties (forces Hard difficulty)
- Add LevelData::setHardcore() so loaded worlds respect the server config
- Add PlayerList::banPlayerForHardcoreDeath() with persistent XUID + IP bans
- Reject respawn requests server-side in hardcore mode
- Ensure server-side player ticks run without move packets (fixes
  environmental damage not applying for some clients)
- Restore 0x8 hardcore bit on LoginPacket/RespawnPacket wire format so
  the client-side death screen detects hardcore mode correctly
This commit is contained in:
Revela
2026-03-16 02:52:16 -05:00
parent c92a5ab31a
commit 8a6934c83c
14 changed files with 115 additions and 22 deletions
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Minecraft.World/LoginPacket.cpp
+1 -1
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@@ -149,7 +149,7 @@ void LoginPacket::write(DataOutputStream *dos) //throws IOException
writeUtf(m_pLevelType->getGeneratorName(), dos);
}
dos->writeLong(seed);
dos->writeInt(gameType | (m_isHardcore ? 0x8 : 0));
dos->writeInt(m_isHardcore ? (gameType | 0x8) : gameType);
dos->writeByte(dimension);
dos->writeByte(mapHeight);
dos->writeByte(maxPlayers);