papermc/Spigot-Server-Patches/0555-Prevent-headless-pistons-from-being-created.patch
Shane Freeder e886d8118e
Updated Upstream ()
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
2021-02-06 00:00:18 +00:00

57 lines
3.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: commandblockguy <commandblockguy1@gmail.com>
Date: Fri, 14 Aug 2020 14:44:14 -0500
Subject: [PATCH] Prevent headless pistons from being created
Prevent headless pistons from being created by explosions or tree/mushroom growth.
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index deb77934dcba8c9209c942a6521dd8486cb5a48d..35a6b9b6d0eed316cafced70fe98b7477450c435 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -436,6 +436,12 @@ public class PaperConfig {
set("settings.unsupported-settings.allow-tnt-duplication", null);
}
+ public static boolean allowHeadlessPistons;
+ private static void allowHeadlessPistons() {
+ config.set("settings.unsupported-settings.allow-headless-pistons-readme", "This setting controls if players should be able to create headless pistons.");
+ allowHeadlessPistons = getBoolean("settings.unsupported-settings.allow-headless-pistons", false);
+ }
+
public static int playerAutoSaveRate = -1;
public static int maxPlayerAutoSavePerTick = 10;
private static void playerAutoSaveRate() {
diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
index 72de544c0782e4daff222a0ca04e5bc870cf148c..5ca4d03215c979a4d122a32178a1859b4d9c3334 100644
--- a/src/main/java/net/minecraft/server/Explosion.java
+++ b/src/main/java/net/minecraft/server/Explosion.java
@@ -135,6 +135,15 @@ public class Explosion {
if (f > 0.0F && this.l.a(this, this.world, blockposition, iblockdata, f) && blockposition.getY() < 256 && blockposition.getY() >= 0) { // CraftBukkit - don't wrap explosions
set.add(blockposition);
+ // Paper start - prevent headless pistons from forming
+ if (!com.destroystokyo.paper.PaperConfig.allowHeadlessPistons && iblockdata.getBlock() == Blocks.MOVING_PISTON) {
+ TileEntity extension = this.world.getTileEntity(blockposition);
+ if (extension instanceof TileEntityPiston && ((TileEntityPiston) extension).isHead()) {
+ EnumDirection direction = iblockdata.get(BlockPistonExtension.FACING);
+ set.add(blockposition.shift(direction.opposite()));
+ }
+ }
+ // Paper end
}
d4 += d0 * 0.30000001192092896D;
diff --git a/src/main/java/net/minecraft/server/TileEntityPiston.java b/src/main/java/net/minecraft/server/TileEntityPiston.java
index 7d86f0fe55063f6875db9c6f99f4f72ed4144536..b0d52d7405ca24938ca753897f89e6fad575d04d 100644
--- a/src/main/java/net/minecraft/server/TileEntityPiston.java
+++ b/src/main/java/net/minecraft/server/TileEntityPiston.java
@@ -42,6 +42,8 @@ public class TileEntityPiston extends TileEntity implements ITickable {
return this.b;
}
+ public final boolean isHead() { return this.h(); } // Paper - OBFHELPER
+
public boolean h() {
return this.g;
}