75 lines
4.3 KiB
Diff
75 lines
4.3 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/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index fdbd8b89bb8bf3b61f60b812b90483c98a3d5ccb..faa1b775e45563b93ac1d5b904938b1f5ad8d80c 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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@@ -441,6 +441,12 @@ public class PaperConfig {
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set("settings.unsupported-settings.allow-tnt-duplication", null);
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}
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+ public static boolean allowHeadlessPistons;
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+ private static void allowHeadlessPistons() {
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+ config.set("settings.unsupported-settings.allow-headless-pistons-readme", "This setting controls if players should be able to create headless pistons.");
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+ allowHeadlessPistons = getBoolean("settings.unsupported-settings.allow-headless-pistons", false);
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+ }
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+
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public static int playerAutoSaveRate = -1;
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public static int maxPlayerAutoSavePerTick = 10;
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private static void playerAutoSaveRate() {
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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 0b3479aae8f7cad7bd0b8b64aa2dead43baf4c56..79008bda42558ea7d28ccf51b66405a3bdb52da7 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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@@ -16,6 +16,7 @@ import java.util.Set;
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import javax.annotation.Nullable;
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import net.minecraft.core.BaseBlockPosition;
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import net.minecraft.core.BlockPosition;
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+import net.minecraft.core.EnumDirection;
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import net.minecraft.core.particles.Particles;
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import net.minecraft.server.level.WorldServer;
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import net.minecraft.sounds.SoundCategory;
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@@ -34,6 +35,8 @@ import net.minecraft.world.level.block.Block;
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import net.minecraft.world.level.block.BlockFireAbstract;
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import net.minecraft.world.level.block.Blocks;
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import net.minecraft.world.level.block.entity.TileEntity;
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+import net.minecraft.world.level.block.piston.BlockPistonExtension;
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+import net.minecraft.world.level.block.piston.TileEntityPiston;
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import net.minecraft.world.level.block.state.IBlockData;
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import net.minecraft.world.level.material.Fluid;
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import net.minecraft.world.level.storage.loot.LootTableInfo;
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@@ -163,6 +166,15 @@ public class Explosion {
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if (f > 0.0F && this.l.a(this, this.world, blockposition, iblockdata, f) && blockposition.getY() < 256 && blockposition.getY() >= 0) { // CraftBukkit - don't wrap explosions
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set.add(blockposition);
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+ // Paper start - prevent headless pistons from forming
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+ if (!com.destroystokyo.paper.PaperConfig.allowHeadlessPistons && iblockdata.getBlock() == Blocks.MOVING_PISTON) {
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+ TileEntity extension = this.world.getTileEntity(blockposition);
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+ if (extension instanceof TileEntityPiston && ((TileEntityPiston) extension).isHead()) {
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+ EnumDirection direction = iblockdata.get(BlockPistonExtension.FACING);
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+ set.add(blockposition.shift(direction.opposite()));
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+ }
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+ }
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+ // Paper end
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}
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d4 += d0 * 0.30000001192092896D;
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diff --git a/src/main/java/net/minecraft/world/level/block/piston/TileEntityPiston.java b/src/main/java/net/minecraft/world/level/block/piston/TileEntityPiston.java
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index e70c3a8c9075b6c0bc73e6488d784dfe3b86e58d..58c7a52612fe0f5c1e4ddacc0bf93cd81f1286b8 100644
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--- a/src/main/java/net/minecraft/world/level/block/piston/TileEntityPiston.java
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+++ b/src/main/java/net/minecraft/world/level/block/piston/TileEntityPiston.java
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@@ -65,6 +65,8 @@ public class TileEntityPiston extends TileEntity implements ITickable {
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return this.b;
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}
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+ public final boolean isHead() { return this.h(); } // Paper - OBFHELPER
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+
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public boolean h() {
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return this.g;
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}
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