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ef0e5a642d
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 9ae3f10f SPIGOT-3842: Add Player#fireworkBoost() and expand Firework API 48c0c547 PR-786: Add methods to get sounds from entities CraftBukkit Changes: 5cc9c022a SPIGOT-7152: Handle hand item changing during air interact event 4ffa1acf6 SPIGOT-7154: Players get kicked when interacting with a conversation 4daa21123 SPIGOT-3842: Add Player#fireworkBoost() and expand Firework API e5d6a9bbf PR-1100: Add methods to get sounds from entities b7e9f1c8b SPIGOT-7146: Reduce use of Material switch in ItemMeta Spigot Changes: 4c157bb4 Rebuild patches
85 lines
5.3 KiB
Diff
85 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 24a822ade17849a083161216c184f02c30b5cb1f..f456ad8a74464414f69b616a48ee9a2c1cee4d90 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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@@ -236,6 +236,13 @@ public class PistonBaseBlock extends DirectionalBlock {
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BlockState iblockdata1 = (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, iblockdata1, 20);
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world.setBlockEntity(MovingPistonBlock.newMovingBlockEntity(pos, iblockdata1, (BlockState) this.defaultBlockState().setValue(PistonBaseBlock.FACING, Direction.from3DDataValue(data & 7)), enumdirection, false, true)); // Paper - diff on change
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world.blockUpdated(pos, iblockdata1.getBlock());
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@@ -262,6 +269,13 @@ public class PistonBaseBlock extends DirectionalBlock {
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if (type == 1 && !iblockdata2.isAir() && PistonBaseBlock.isPushable(iblockdata2, world, blockposition1, enumdirection.getOpposite(), false, enumdirection) && (iblockdata2.getPistonPushReaction() == PushReaction.NORMAL || iblockdata2.is(Blocks.PISTON) || iblockdata2.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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