Paper/patches/server/1021-Fix-tripwire-state-inconsistency.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

88 lines
5.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Sun, 19 Dec 2021 21:11:20 +0100
Subject: [PATCH] Fix tripwire state inconsistency
This patch prevents updating and re-setting the tripwire when being removed in certain conditions
diff --git a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
index bdb99b799d1a97f1340c3d388d2901f7cb1c3527..3cb1db27dba902678a5848a1fb5e2c6ec6241e60 100644
--- a/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/TripWireBlock.java
@@ -91,7 +91,7 @@ public class TripWireBlock extends Block {
public void onRemove(BlockState state, Level world, BlockPos pos, BlockState newState, boolean moved) {
if (io.papermc.paper.configuration.GlobalConfiguration.get().blockUpdates.disableTripwireUpdates) return; // Paper - prevent adjacent tripwires from updating
if (!moved && !state.is(newState.getBlock())) {
- this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true));
+ this.updateSource(world, pos, (BlockState) state.setValue(TripWireBlock.POWERED, true), true); // Paper - fix tripwire state inconsistency
}
}
@@ -108,6 +108,12 @@ public class TripWireBlock extends Block {
private void updateSource(Level world, BlockPos pos, BlockState state) {
if (io.papermc.paper.configuration.GlobalConfiguration.get().blockUpdates.disableTripwireUpdates) return; // Paper - prevent adjacent tripwires from updating
+ // Paper start - fix tripwire state inconsistency
+ this.updateSource(world, pos, state, false);
+ }
+
+ private void updateSource(Level world, BlockPos pos, BlockState state, boolean beingRemoved) {
+ // Paper end - fix tripwire state inconsistency
Direction[] aenumdirection = new Direction[]{Direction.SOUTH, Direction.WEST};
int i = aenumdirection.length;
int j = 0;
@@ -123,7 +129,7 @@ public class TripWireBlock extends Block {
if (iblockdata1.is(this.hook)) {
if (iblockdata1.getValue(TripWireHookBlock.FACING) == enumdirection.getOpposite()) {
- TripWireHookBlock.calculateState(world, blockposition1, iblockdata1, false, true, k, state);
+ TripWireHookBlock.calculateState(world, blockposition1, iblockdata1, false, true, k, state, beingRemoved); // Paper - fix tripwire state inconsistency
}
} else if (iblockdata1.is((Block) this)) {
++k;
diff --git a/src/main/java/net/minecraft/world/level/block/TripWireHookBlock.java b/src/main/java/net/minecraft/world/level/block/TripWireHookBlock.java
index d9b3877257b31ca1b5acc4a47fbf5b993de69ae0..7f2dcf6a9e69779e6f898284b58fb1e32902000c 100644
--- a/src/main/java/net/minecraft/world/level/block/TripWireHookBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/TripWireHookBlock.java
@@ -118,7 +118,13 @@ public class TripWireHookBlock extends Block {
TripWireHookBlock.calculateState(world, pos, state, false, false, -1, (BlockState) null);
}
- public static void calculateState(Level world, BlockPos pos, BlockState state, boolean flag, boolean flag1, int i, @Nullable BlockState iblockdata1) {
+ public static void calculateState(Level world, BlockPos pos, BlockState state, boolean beingRemoved, boolean flag1, int i, @Nullable BlockState iblockdata1) {
+ // Paper start - fix tripwire state inconsistency
+ calculateState(world, pos, state, beingRemoved, flag1, i, iblockdata1, false);
+ }
+
+ public static void calculateState(Level world, BlockPos pos, BlockState state, boolean beingRemoved, boolean flag1, int i, @Nullable BlockState iblockdata1, boolean tripWireBeingRemoved) {
+ // Paper end - fix tripwire state inconsistency
Optional<Direction> optional = state.getOptionalValue(TripWireHookBlock.FACING);
if (optional.isPresent()) {
@@ -126,7 +132,7 @@ public class TripWireHookBlock extends Block {
boolean flag2 = (Boolean) state.getOptionalValue(TripWireHookBlock.ATTACHED).orElse(false);
boolean flag3 = (Boolean) state.getOptionalValue(TripWireHookBlock.POWERED).orElse(false);
Block block = state.getBlock();
- boolean flag4 = !flag;
+ boolean flag4 = !beingRemoved; // Paper - fix tripwire state inconsistency
boolean flag5 = false;
int j = 0;
BlockState[] aiblockdata = new BlockState[42];
@@ -156,6 +162,7 @@ public class TripWireHookBlock extends Block {
boolean flag7 = (Boolean) iblockdata2.getValue(TripWireBlock.POWERED);
flag5 |= flag6 && flag7;
+ if (k != i || !tripWireBeingRemoved || !flag6) // Paper - fix tripwire state inconsistency; don't update the tripwire again if being removed and not disarmed
aiblockdata[k] = iblockdata2;
if (k == i) {
world.scheduleTick(pos, block, 10);
@@ -187,7 +194,7 @@ public class TripWireHookBlock extends Block {
// CraftBukkit end
TripWireHookBlock.emitState(world, pos, flag4, flag5, flag2, flag3);
- if (!flag) {
+ if (!beingRemoved) { // Paper - fix tripwire state inconsistency
if (world.getBlockState(pos).getBlock() == Blocks.TRIPWIRE_HOOK) // Paper - Validate tripwire hook placement before update
world.setBlock(pos, (BlockState) iblockdata3.setValue(TripWireHookBlock.FACING, enumdirection), 3);
if (flag1) {