PaperMC/Spigot-Server-Patches/0558-Prevent-headless-pistons-from-being-created.patch
Daniel Ennis e792da723a
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#4728)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
30885166 Update to Minecraft 1.16.4

CraftBukkit Changes:
3af81c71 Update to Minecraft 1.16.4

Spigot Changes:
f011ca24 Update to Minecraft 1.16.4

Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com>
2020-11-02 20:22:15 -06:00

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 669653b5cfb057b277e509b630fd73a843b42b24..a01b28d47669cbc36a9e6c47deb5135bec231948 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..fe513a9470a0c474ca436ede4a5a7da476cf6c8d 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) {
+ TileEntityPiston extension = (TileEntityPiston)this.world.getTileEntity(blockposition);
+ if (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;
}