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2873869bb1
Signs no longer have a specific isEdiable state, the entire API in this regard needs updating/deprecation. The boolean field is completely gone, replaced by a uuid (which will need a new setEditingPlayer(UUID) method on the Sign interface), and the current upstream implementation of setEdiable simply flips the is_waxed state. This patch is hence not needed as it neither allows editing (which will be redone in a later patch) nor is required to copy the is_waxed boolean flag as it lives in the signs compound tag and is covered by applyTo.
86 lines
5.3 KiB
Diff
86 lines
5.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Wed, 22 Dec 2021 09:51:48 -0800
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Subject: [PATCH] Fix sticky pistons and BlockPistonRetractEvent
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There is an explicit check in the handling code for empty pistons that
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prevents sticky pistons from firing the event. However when we look back
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at the history we see that this check was originally added so that ONLY
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sticky pistons would fire the retract event. I'm not sure why.
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https://hub.spigotmc.org/stash/projects/SPIGOT/repos/craftbukkit/commits/1092acbddf07edfa4100bc6824504ac75088e913
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Over the course of several updates, the meaning of that field appears to
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have changed from "is NOT sticky" to "is sticky". So now its having the
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opposite effect. Only normal pistons fire the retraction event. And like
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all things in CB, it's just been carried around since.
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If we are to believe the history, the correct fix for this issue is to
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flip it so it only fires for sticky pistons, but that puts us in a
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bind. It's already firing for non-sticky pistons, changing it now would
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likely result in breakage. Furthermore, there is little documentation as
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to WHY that was ever intended to be the case.
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Instead we opt to remove the check entirely so that the event fires for
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all piston types.
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Co-authored-by: Zach Brown <zach@zachbr.io>
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Co-authored-by: Madeline Miller <mnmiller1@me.com>
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diff --git a/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java b/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java
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index 9b3d253c4224410719bf778a4688fce13c12069d..ee316f2474e43c1e644632772e9eb9cc181756c6 100644
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--- a/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java
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@@ -146,15 +146,15 @@ public class PistonBaseBlock extends DirectionalBlock {
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}
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// CraftBukkit start
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- if (!this.isSticky) {
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- org.bukkit.block.Block block = world.getWorld().getBlockAt(pos.getX(), pos.getY(), pos.getZ());
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- BlockPistonRetractEvent event = new BlockPistonRetractEvent(block, ImmutableList.<org.bukkit.block.Block>of(), CraftBlock.notchToBlockFace(enumdirection));
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- world.getCraftServer().getPluginManager().callEvent(event);
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-
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- if (event.isCancelled()) {
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- return;
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- }
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- }
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+ // if (!this.isSticky) { // Paper - Move further down
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+ // org.bukkit.block.Block block = world.getWorld().getBlockAt(pos.getX(), pos.getY(), pos.getZ());
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+ // BlockPistonRetractEvent event = new BlockPistonRetractEvent(block, ImmutableList.<org.bukkit.block.Block>of(), CraftBlock.notchToBlockFace(enumdirection));
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+ // world.getCraftServer().getPluginManager().callEvent(event);
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+ //
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+ // if (event.isCancelled()) {
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+ // return;
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+ // }
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+ // }
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// PAIL: checkME - what happened to setTypeAndData?
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// CraftBukkit end
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world.blockEvent(pos, this, b0, enumdirection.get3DDataValue());
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@@ -237,6 +237,13 @@ public class PistonBaseBlock extends DirectionalBlock {
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BlockState iblockdata2 = (BlockState) ((BlockState) Blocks.MOVING_PISTON.defaultBlockState().setValue(MovingPistonBlock.FACING, enumdirection)).setValue(MovingPistonBlock.TYPE, this.isSticky ? PistonType.STICKY : PistonType.DEFAULT);
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+ // Paper start - Move empty piston retract call to fix multiple event fires
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+ if (!this.isSticky) {
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+ if (!new BlockPistonRetractEvent(CraftBlock.at(world, pos), java.util.Collections.emptyList(), CraftBlock.notchToBlockFace(enumdirection)).callEvent()) {
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+ return false;
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+ }
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+ }
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+ // Paper end
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world.setBlock(pos, iblockdata2, 20);
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world.setBlockEntity(MovingPistonBlock.newMovingBlockEntity(pos, iblockdata2, (BlockState) this.defaultBlockState().setValue(PistonBaseBlock.FACING, Direction.from3DDataValue(data & 7)), enumdirection, false, true)); // Paper - diff on change
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world.blockUpdated(pos, iblockdata2.getBlock());
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@@ -263,6 +270,13 @@ public class PistonBaseBlock extends DirectionalBlock {
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if (type == 1 && !iblockdata3.isAir() && PistonBaseBlock.isPushable(iblockdata3, world, blockposition1, enumdirection.getOpposite(), false, enumdirection) && (iblockdata3.getPistonPushReaction() == PushReaction.NORMAL || iblockdata3.is(Blocks.PISTON) || iblockdata3.is(Blocks.STICKY_PISTON))) {
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this.moveBlocks(world, pos, enumdirection, false);
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} else {
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+ // Paper start - fire BlockPistonRetractEvent for sticky pistons retracting nothing (air)
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+ if (type == TRIGGER_CONTRACT && iblockdata2.isAir()) {
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+ if (!new BlockPistonRetractEvent(CraftBlock.at(world, pos), java.util.Collections.emptyList(), CraftBlock.notchToBlockFace(enumdirection)).callEvent()) {
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+ return false;
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+ }
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+ }
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+ // Paper end
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world.removeBlock(pos.relative(enumdirection), false);
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}
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}
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