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89d51d5f29
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.
28 lines
2.0 KiB
Diff
28 lines
2.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: commandblockguy <commandblockguy1@gmail.com>
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Date: Fri, 14 Aug 2020 14:44:14 -0500
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Subject: [PATCH] Prevent headless pistons from being created
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Prevent headless pistons from being created by explosions or tree/mushroom growth.
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diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
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index b057a67a416928ae30bd407b3da982b73ae3be03..2d1fe6af7923ad4a0143f2d3fd28abc85e6092c1 100644
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--- a/src/main/java/net/minecraft/world/level/Explosion.java
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+++ b/src/main/java/net/minecraft/world/level/Explosion.java
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@@ -205,6 +205,15 @@ public class Explosion {
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if (f > 0.0F && this.damageCalculator.shouldBlockExplode(this, this.level, blockposition, iblockdata, f)) {
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set.add(blockposition);
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+ // Paper start - prevent headless pistons from forming
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+ if (!io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.allowHeadlessPistons && iblockdata.getBlock() == Blocks.MOVING_PISTON) {
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+ net.minecraft.world.level.block.entity.BlockEntity extension = this.level.getBlockEntity(blockposition);
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+ if (extension instanceof net.minecraft.world.level.block.piston.PistonMovingBlockEntity blockEntity && blockEntity.isSourcePiston()) {
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+ net.minecraft.core.Direction direction = iblockdata.getValue(net.minecraft.world.level.block.piston.PistonHeadBlock.FACING);
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+ set.add(blockposition.relative(direction.getOpposite()));
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+ }
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+ }
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+ // Paper end - prevent headless pistons from forming
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}
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d4 += d0 * 0.30000001192092896D;
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