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Paper-Old/patches/server/0276-Add-option-to-prevent-players-from-moving-into-unloa.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

68 Zeilen
5.4 KiB
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Gabriele C <sgdc3.mail@gmail.com>
Date: Mon, 22 Oct 2018 17:34:10 +0200
Subject: [PATCH] Add option to prevent players from moving into unloaded
chunks #1551
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 3b8fd0b7f9a5d215119c6507e1af3068c7f543a2..17e5ec6bba89c2769a6c20358b0f01824877497c 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -571,9 +571,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
double d0 = entity.getX();
double d1 = entity.getY();
double d2 = entity.getZ();
- double d3 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX());
- double d4 = ServerGamePacketListenerImpl.clampVertical(packet.getY());
- double d5 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ());
+ double d3 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX()); final double toX = d3; // Paper - OBFHELPER
+ double d4 = ServerGamePacketListenerImpl.clampVertical(packet.getY()); final double toY = d4; // Paper - OBFHELPER
+ double d5 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ()); final double toZ = d5; // Paper - OBFHELPER
float f = Mth.wrapDegrees(packet.getYRot());
float f1 = Mth.wrapDegrees(packet.getXRot());
double d6 = d3 - this.vehicleFirstGoodX;
@@ -608,6 +608,16 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
}
speed *= 2f; // TODO: Get the speed of the vehicle instead of the player
+ // Paper start - Prevent moving into unloaded chunks
+ if (player.level.paperConfig().chunks.preventMovingIntoUnloadedChunks && (
+ !worldserver.areChunksLoadedForMove(this.player.getBoundingBox().expandTowards(new Vec3(toX, toY, toZ).subtract(this.player.position()))) ||
+ !worldserver.areChunksLoadedForMove(entity.getBoundingBox().expandTowards(new Vec3(toX, toY, toZ).subtract(entity.position())))
+ )) {
+ this.connection.send(new ClientboundMoveVehiclePacket(entity));
+ return;
+ }
+ // Paper end
+
if (d10 - d9 > Math.max(100.0D, Math.pow((double) (org.spigotmc.SpigotConfig.movedTooQuicklyMultiplier * (float) i * speed), 2)) && !this.isSingleplayerOwner()) {
// CraftBukkit end
ServerGamePacketListenerImpl.LOGGER.warn("{} (vehicle of {}) moved too quickly! {},{},{}", new Object[]{entity.getName().getString(), this.player.getName().getString(), d6, d7, d8});
@@ -1257,9 +1267,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
this.allowedPlayerTicks = 20; // CraftBukkit
} else {
this.awaitingTeleportTime = this.tickCount;
- double d0 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX(this.player.getX()));
- double d1 = ServerGamePacketListenerImpl.clampVertical(packet.getY(this.player.getY()));
- double d2 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ(this.player.getZ()));
+ double d0 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX(this.player.getX())); final double toX = d0; // Paper - OBFHELPER
+ double d1 = ServerGamePacketListenerImpl.clampVertical(packet.getY(this.player.getY())); final double toY = d1;
+ double d2 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ(this.player.getZ())); final double toZ = d2; // Paper - OBFHELPER
float f = Mth.wrapDegrees(packet.getYRot(this.player.getYRot()));
float f1 = Mth.wrapDegrees(packet.getXRot(this.player.getXRot()));
@@ -1315,6 +1325,12 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
} else {
speed = this.player.getAbilities().walkingSpeed * 10f;
}
+ // Paper start - Prevent moving into unloaded chunks
+ if (player.level.paperConfig().chunks.preventMovingIntoUnloadedChunks && (this.player.getX() != toX || this.player.getZ() != toZ) && !worldserver.areChunksLoadedForMove(this.player.getBoundingBox().expandTowards(new Vec3(toX, toY, toZ).subtract(this.player.position())))) {
+ this.internalTeleport(this.player.getX(), this.player.getY(), this.player.getZ(), this.player.getYRot(), this.player.getXRot(), Collections.emptySet(), true);
+ return;
+ }
+ // Paper end
if (!this.player.isChangingDimension() && (!this.player.getLevel().getGameRules().getBoolean(GameRules.RULE_DISABLE_ELYTRA_MOVEMENT_CHECK) || !this.player.isFallFlying())) {
float f2 = this.player.isFallFlying() ? 300.0F : 100.0F;