geforkt von Mirrors/Paper
94 Zeilen
5.7 KiB
Diff
94 Zeilen
5.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
|
|
Date: Thu, 11 Jun 2020 17:29:42 -0700
|
|
Subject: [PATCH] Fix piston physics inconsistency - MC-188840
|
|
|
|
Pistons invoke physics when they move blocks. The physics can cause
|
|
tnt blocks to ignite. However, pistons (when storing the blocks they "moved")
|
|
don't actually go back to the world state sometimes to check if something
|
|
like that happened. As a result they end up moving the tnt like it was
|
|
never ignited. This resulted in the ability to create machines
|
|
that can duplicate tnt, called "world eaters".
|
|
This patch makes the piston logic retrieve the block state from the world
|
|
prevent this from occuring.
|
|
|
|
This patch also sets the moved pos to air immediately after creating
|
|
the moving piston TE. This prevents the block from being updated from
|
|
other physics calls by the piston.
|
|
|
|
Tested against the following tnt duper design:
|
|
https://www.youtube.com/watch?v=mS7xxNGhjxs
|
|
|
|
This patch also affects every type of machine that utilises
|
|
this mechanic. For example, dead coral is removed by a physics
|
|
update when being moved while it is attached to slimeblocks.
|
|
|
|
Standard piston machines that don't destroy or modify the
|
|
blocks they move by physics updates should be entirely
|
|
unaffected.
|
|
|
|
This patch fixes https://bugs.mojang.com/browse/MC-188840
|
|
|
|
This patch also fixes rail duping and carpet duping.
|
|
|
|
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
|
index 7e577b889738a5d0b3e5be66d9266cdf01c70b1d..fc03df234fc641f72b4d4a79535860300006ff50 100644
|
|
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
|
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
|
|
@@ -429,4 +429,10 @@ public class PaperConfig {
|
|
consoleHasAllPermissions = getBoolean("settings.console-has-all-permissions", consoleHasAllPermissions);
|
|
}
|
|
|
|
+ public static boolean allowPistonDuplication;
|
|
+ private static void allowPistonDuplication() {
|
|
+ config.set("settings.unsupported-settings.allow-piston-duplication-readme", "This setting controls if player should be able to use TNT duplication, but this also allows duplicating carpet, rails and potentially other items");
|
|
+ allowPistonDuplication = getBoolean("settings.unsupported-settings.allow-piston-duplication", config.getBoolean("settings.unsupported-settings.allow-tnt-duplication", false));
|
|
+ set("settings.unsupported-settings.allow-tnt-duplication", null);
|
|
+ }
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/server/BlockPiston.java b/src/main/java/net/minecraft/server/BlockPiston.java
|
|
index 0bab7dfb053c1aa92f5417c25fed5484e09bbec3..5d3bb5f393a1e0e4a2e8b9a466530a91279697a9 100644
|
|
--- a/src/main/java/net/minecraft/server/BlockPiston.java
|
|
+++ b/src/main/java/net/minecraft/server/BlockPiston.java
|
|
@@ -370,12 +370,24 @@ public class BlockPiston extends BlockDirectional {
|
|
}
|
|
|
|
for (k = list.size() - 1; k >= 0; --k) {
|
|
- blockposition3 = (BlockPosition) list.get(k);
|
|
- iblockdata1 = world.getType(blockposition3);
|
|
+ // Paper start - fix a variety of piston desync dupes
|
|
+ boolean allowDesync = com.destroystokyo.paper.PaperConfig.allowPistonDuplication;
|
|
+ BlockPosition oldPos = blockposition3 = (BlockPosition) list.get(k);
|
|
+ iblockdata1 = allowDesync ? world.getType(oldPos) : null;
|
|
+ // Paper end - fix a variety of piston desync dupes
|
|
blockposition3 = blockposition3.shift(enumdirection1);
|
|
map.remove(blockposition3);
|
|
world.setTypeAndData(blockposition3, (IBlockData) Blocks.MOVING_PISTON.getBlockData().set(BlockPiston.FACING, enumdirection), 68);
|
|
- world.setTileEntity(blockposition3, BlockPistonMoving.a((IBlockData) list1.get(k), enumdirection, flag, false));
|
|
+ // Paper start - fix a variety of piston desync dupes
|
|
+ if (!allowDesync) {
|
|
+ iblockdata1 = world.getType(oldPos);
|
|
+ map.replace(oldPos, iblockdata1);
|
|
+ }
|
|
+ world.setTileEntity(blockposition3, BlockPistonMoving.a(allowDesync ? list1.get(k) : iblockdata1, enumdirection, flag, false));
|
|
+ if (!allowDesync) {
|
|
+ world.setTypeAndData(oldPos, Blocks.AIR.getBlockData(), 2 | 4 | 16 | 1024); // set air to prevent later physics updates from seeing this block
|
|
+ }
|
|
+ // Paper end - fix a variety of piston desync dupes
|
|
aiblockdata[j++] = iblockdata1;
|
|
}
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/TileEntityPiston.java b/src/main/java/net/minecraft/server/TileEntityPiston.java
|
|
index 8b2758377b70aaf7a9d21a28d4bbe16389f22403..7d86f0fe55063f6875db9c6f99f4f72ed4144536 100644
|
|
--- a/src/main/java/net/minecraft/server/TileEntityPiston.java
|
|
+++ b/src/main/java/net/minecraft/server/TileEntityPiston.java
|
|
@@ -256,7 +256,7 @@ public class TileEntityPiston extends TileEntity implements ITickable {
|
|
IBlockData iblockdata = Block.b(this.a, (GeneratorAccess) this.world, this.position);
|
|
|
|
if (iblockdata.isAir()) {
|
|
- this.world.setTypeAndData(this.position, this.a, 84);
|
|
+ this.world.setTypeAndData(this.position, this.a, com.destroystokyo.paper.PaperConfig.allowPistonDuplication ? 84 : (84 | 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
|
|
Block.a(this.a, iblockdata, this.world, this.position, 3);
|
|
} else {
|
|
if (iblockdata.b(BlockProperties.C) && (Boolean) iblockdata.get(BlockProperties.C)) {
|