geforkt von Mirrors/Paper
72 Zeilen
4.5 KiB
Diff
72 Zeilen
4.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Thu, 11 Jun 2020 17:29:42 -0700
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Subject: [PATCH] Fix piston physics inconsistency - MC-188840
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Pistons invoke physics when they move blocks. The physics can cause
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tnt blocks to ignite. However, pistons (when storing the blocks they "moved")
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don't actually go back to the world state sometimes to check if something
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like that happened. As a result they end up moving the tnt like it was
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never ignited. This resulted in the ability to create machines
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that can duplicate tnt, called "world eaters".
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This patch makes the piston logic retrieve the block state from the world
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prevent this from occuring.
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Tested against the following tnt duper design:
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https://www.youtube.com/watch?v=mS7xxNGhjxs
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This patch also affects every type of machine that utilises
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this mechanic. For example, dead coral is removed by a physics
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update when being moved while it is attached to slimeblocks.
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Standard piston machines that don't destroy or modify the
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blocks they move by physics updates should be entirely
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unaffected.
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This patch fixes https://bugs.mojang.com/browse/MC-188840
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index f0284e81db3ab7c45018de2b446f2d8296df15c3..863bec74a6a0ee916b7db05687e588ae52eed4cd 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -442,4 +442,8 @@ public class PaperConfig {
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consoleHasAllPermissions = getBoolean("settings.console-has-all-permissions", consoleHasAllPermissions);
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}
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+ public static boolean allowTntDuplication = false;
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+ private static void allowTntDuplication() {
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+ allowTntDuplication = getBoolean("settings.unsupported-settings.allow-tnt-duplication", allowTntDuplication);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/BlockPiston.java b/src/main/java/net/minecraft/server/BlockPiston.java
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index b29525c40dc8e3ae747b8ddf5a3bd79b7cc0b792..32ff3f65cf9c2f9f4be1c1e78f5df555efe67b07 100644
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--- a/src/main/java/net/minecraft/server/BlockPiston.java
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+++ b/src/main/java/net/minecraft/server/BlockPiston.java
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@@ -364,11 +364,11 @@ public class BlockPiston extends BlockDirectional {
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for (k = list.size() - 1; k >= 0; --k) {
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blockposition3 = (BlockPosition) list.get(k);
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- iblockdata1 = world.getType(blockposition3);
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+ iblockdata1 = world.getType(blockposition3); if (!com.destroystokyo.paper.PaperConfig.allowTntDuplication) map.replace(blockposition3, iblockdata1); // Paper start - fix piston physics inconsistency
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blockposition3 = blockposition3.shift(enumdirection1);
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map.remove(blockposition3);
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world.setTypeAndData(blockposition3, (IBlockData) Blocks.MOVING_PISTON.getBlockData().set(BlockPiston.FACING, enumdirection), 68);
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- world.setTileEntity(blockposition3, BlockPistonMoving.a((IBlockData) list1.get(k), enumdirection, flag, false));
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+ world.setTileEntity(blockposition3, BlockPistonMoving.a(com.destroystokyo.paper.PaperConfig.allowTntDuplication ? list1.get(k) : iblockdata1, enumdirection, flag, false)); // Paper - fix piston physics inconsistency
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--j;
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aiblockdata[j] = iblockdata1;
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}
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diff --git a/src/main/java/net/minecraft/server/TileEntityPiston.java b/src/main/java/net/minecraft/server/TileEntityPiston.java
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index 489175abd8e582a3c082364fec357c4f061a22d7..634e37843097cdb08bab3a800565b42a58dce1d8 100644
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--- a/src/main/java/net/minecraft/server/TileEntityPiston.java
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+++ b/src/main/java/net/minecraft/server/TileEntityPiston.java
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@@ -275,7 +275,7 @@ public class TileEntityPiston extends TileEntity implements ITickable {
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IBlockData iblockdata = Block.b(this.a, (GeneratorAccess) this.world, this.position);
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if (iblockdata.isAir()) {
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- this.world.setTypeAndData(this.position, this.a, 84);
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+ this.world.setTypeAndData(this.position, this.a, 84 | (com.destroystokyo.paper.PaperConfig.allowTntDuplication ? 0 : 2)); // Paper - force notify (flag 2), it's possible the set type by the piston block (which doesn't notify) set this block to air
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Block.a(this.a, iblockdata, this.world, this.position, 3);
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} else {
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if (iblockdata.b((IBlockState) BlockProperties.C) && (Boolean) iblockdata.get(BlockProperties.C)) {
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