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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 11 Nov 2018 21:01:09 +0000
Subject: [PATCH] Don't allow digging into unloaded chunks
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 91d6885da13138e1def16e1876910ef893ce244d..eb58536e37af9da5e3ae7e43f874a1ef09c20944 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -120,8 +120,8 @@ public class ServerPlayerGameMode {
BlockState iblockdata;
if (this.hasDelayedDestroy) {
- iblockdata = this.level.getBlockState(this.delayedDestroyPos);
- if (iblockdata.isAir()) {
+ iblockdata = this.level.getBlockStateIfLoaded(this.delayedDestroyPos); // Paper
+ if (iblockdata == null || iblockdata.isAir()) { // Paper
this.hasDelayedDestroy = false;
} else {
float f = this.incrementDestroyProgress(iblockdata, this.delayedDestroyPos, this.delayedTickStart);
@@ -132,7 +132,13 @@ public class ServerPlayerGameMode {
}
}
} else if (this.isDestroyingBlock) {
- iblockdata = this.level.getBlockState(this.destroyPos);
+ // Paper start - don't want to do same logic as above, return instead
+ iblockdata = this.level.getBlockStateIfLoaded(this.destroyPos);
+ if (iblockdata == null) {
+ this.isDestroyingBlock = false;
+ return;
+ }
+ // Paper end
if (iblockdata.isAir()) {
this.level.destroyBlockProgress(this.player.getId(), this.destroyPos, -1);
this.lastSentState = -1;
@@ -164,6 +170,7 @@ public class ServerPlayerGameMode {
double d3 = d0 * d0 + d1 * d1 + d2 * d2;
if (d3 > 36.0D) {
+ if (true) return; // Paper - Don't notify if unreasonably far away
BlockState iblockdata;
if (this.player.level.getServer() != null && this.player.chunkPosition().getChessboardDistance(new ChunkPos(pos)) < this.player.level.getServer().getPlayerList().getViewDistance()) {
@@ -304,10 +311,12 @@ public class ServerPlayerGameMode {
this.player.connection.send(new ClientboundBlockBreakAckPacket(pos, this.level.getBlockState(pos), action, true, "stopped destroying"));
} else if (action == ServerboundPlayerActionPacket.Action.ABORT_DESTROY_BLOCK) {
this.isDestroyingBlock = false;
- if (!Objects.equals(this.destroyPos, pos)) {
+ if (!Objects.equals(this.destroyPos, pos) && !BlockPos.ZERO.equals(this.destroyPos)) {
ServerPlayerGameMode.LOGGER.debug("Mismatch in destroy block pos: {} {}", this.destroyPos, pos); // CraftBukkit - SPIGOT-5457 sent by client when interact event cancelled
- this.level.destroyBlockProgress(this.player.getId(), this.destroyPos, -1);
- this.player.connection.send(new ClientboundBlockBreakAckPacket(this.destroyPos, this.level.getBlockState(this.destroyPos), action, true, "aborted mismatched destroying"));
+ BlockState type = this.level.getBlockStateIfLoaded(this.destroyPos); // Paper - don't load unloaded chunks for stale records here
+ if (type != null) this.level.destroyBlockProgress(this.player.getId(), this.destroyPos, -1); // Paper
+ if (type != null) this.player.connection.send(new ClientboundBlockBreakAckPacket(this.destroyPos, type, action, true, "aborted mismatched destroying")); // Paper
+ this.destroyPos = BlockPos.ZERO; // Paper
}
this.level.destroyBlockProgress(this.player.getId(), pos, -1);
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 189e05daf63060c8f0c1ca56bc23a0c4c8fa0b7a..7241418074dbd8e0e81e2b679bd317d98fea2e27 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1563,7 +1563,12 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
case START_DESTROY_BLOCK:
case ABORT_DESTROY_BLOCK:
case STOP_DESTROY_BLOCK:
+ // Paper start - Don't allow digging in unloaded chunks
+ if (this.player.level.getChunkIfLoadedImmediately(blockposition.getX() >> 4, blockposition.getZ() >> 4) == null) {
+ return;
+ }
this.player.gameMode.handleBlockBreakAction(blockposition, packetplayinblockdig_enumplayerdigtype, packet.getDirection(), this.player.level.getMaxBuildHeight());
+ // Paper end - Don't allow digging in unloaded chunks
return;
default:
throw new IllegalArgumentException("Invalid player action");
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