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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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31
Minecraft.Client/PlayerConnection.cpp
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@@ -25,6 +25,7 @@
#include "..\Minecraft.World\StringHelpers.h"
#include "..\Minecraft.World\Socket.h"
#include "..\Minecraft.World\Achievements.h"
#include "..\Minecraft.World\LevelData.h"
#include "..\Minecraft.World\net.minecraft.h"
#include "EntityTracker.h"
#include "ServerConnection.h"
@@ -142,6 +143,14 @@ void PlayerConnection::tick()
{
dropSpamTickCount--;
}
// Ensure server-side player tick runs even when no move packet was received this tick.
// Without this, environmental damage (drowning, fire, lava) is never applied to clients
// that don't send frequent move packets.
if (!didTick && player != nullptr)
{
player->doTick(false);
}
}
void PlayerConnection::disconnect(DisconnectPacket::eDisconnectReason reason)
@@ -1109,22 +1118,12 @@ void PlayerConnection::handleClientCommand(shared_ptr<ClientCommandPacket> packe
{
player = server->getPlayers()->respawn(player, player->m_enteredEndExitPortal?0:player->dimension, true);
}
//else if (player.getLevel().getLevelData().isHardcore())
//{
// if (server.isSingleplayer() && player.name.equals(server.getSingleplayerName()))
// {
// player.connection.disconnect("You have died. Game over, man, it's game over!");
// server.selfDestruct();
// }
// else
// {
// BanEntry ban = new BanEntry(player.name);
// ban.setReason("Death in Hardcore");
// server.getPlayers().getBans().add(ban);
// player.connection.disconnect("You have died. Game over, man, it's game over!");
// }
//}
else if (player->level->getLevelData()->isHardcore())
{
// Hardcore mode — server rejects respawn. Ban and disconnect are already
// handled in ServerPlayer::die() via banPlayerForHardcoreDeath().
return;
}
else
{
if (player->getHealth() > 0) return;