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1718f61bf8
Doesn't compile yet. CraftBukkit Changes: 90d6905b Repackage NMS 69cf961d Repackage patches Spigot Changes: 79d53c28 Repackage NMS
48 Zeilen
2.7 KiB
Diff
48 Zeilen
2.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Zach Brown <zach@zachbr.io>
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Date: Thu, 31 Jan 2019 16:33:36 -0500
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Subject: [PATCH] Fire BlockPistonRetractEvent for all empty pistons
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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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diff --git a/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java b/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java
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index 869aaae93bc83b8271644147bb569c868ab13fb8..7de86d6232eb84642fb6423a1b0a9f30d9df9f2b 100644
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--- a/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java
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+++ b/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java
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@@ -141,7 +141,7 @@ public class BlockPiston extends BlockDirectional {
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}
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// CraftBukkit start
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- if (!this.sticky) {
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+ //if (!this.sticky) { // Paper - Prevents empty sticky pistons from firing retract - history behind is odd
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org.bukkit.block.Block block = world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
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BlockPistonRetractEvent event = new BlockPistonRetractEvent(block, ImmutableList.<org.bukkit.block.Block>of(), CraftBlock.notchToBlockFace(enumdirection));
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world.getServer().getPluginManager().callEvent(event);
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@@ -149,7 +149,7 @@ public class BlockPiston extends BlockDirectional {
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if (event.isCancelled()) {
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return;
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}
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- }
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+ //} // Paper
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// PAIL: checkME - what happened to setTypeAndData?
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// CraftBukkit end
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world.playBlockAction(blockposition, this, b0, enumdirection.c());
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