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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
42 lines
2.5 KiB
Diff
42 lines
2.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Legitimoose <legitimoose@gmail.com>
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Date: Wed, 28 Sep 2022 22:45:49 -0700
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Subject: [PATCH] fix Jigsaw block kicking user
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diff --git a/src/main/java/net/minecraft/world/level/block/entity/JigsawBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/JigsawBlockEntity.java
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index 72d89e8999825b43a36ed9ee8f4545bde3927690..e2e31d6383c7de4f2eede46987d51978a5692639 100644
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--- a/src/main/java/net/minecraft/world/level/block/entity/JigsawBlockEntity.java
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+++ b/src/main/java/net/minecraft/world/level/block/entity/JigsawBlockEntity.java
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@@ -133,7 +133,12 @@ public class JigsawBlockEntity extends BlockEntity {
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public void generate(ServerLevel world, int maxDepth, boolean keepJigsaws) {
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BlockPos blockPos = this.getBlockPos().relative(this.getBlockState().getValue(JigsawBlock.ORIENTATION).front());
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Registry<StructureTemplatePool> registry = world.registryAccess().registryOrThrow(Registries.TEMPLATE_POOL);
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- Holder<StructureTemplatePool> holder = registry.getHolderOrThrow(this.pool);
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+ // Paper start - Replace getHolderOrThrow with a null check
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+ Holder<StructureTemplatePool> holder = registry.getHolder(this.pool).orElse(null);
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+ if (holder == null) {
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+ return;
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+ }
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+ // Paper end - Replace getHolderOrThrow with a null check
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JigsawPlacement.generateJigsaw(world, holder, this.target, maxDepth, blockPos, keepJigsaws);
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}
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diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/pools/StructureTemplatePool.java b/src/main/java/net/minecraft/world/level/levelgen/structure/pools/StructureTemplatePool.java
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index 2c5165835dede1abc07ff508c820f0fe1a1027d0..194864460a5508b6b60f445d6c7923c2ae14a15b 100644
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--- a/src/main/java/net/minecraft/world/level/levelgen/structure/pools/StructureTemplatePool.java
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+++ b/src/main/java/net/minecraft/world/level/levelgen/structure/pools/StructureTemplatePool.java
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@@ -85,7 +85,13 @@ public class StructureTemplatePool {
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}
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public StructurePoolElement getRandomTemplate(RandomSource random) {
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+ //Paper start - Prevent random.nextInt throwing an IllegalArgumentException
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+ if (this.templates.size() == 0) {
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+ return EmptyPoolElement.INSTANCE;
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+ } else {
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return this.templates.get(random.nextInt(this.templates.size()));
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+ }
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+ // Paper end
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}
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public List<StructurePoolElement> getShuffledTemplates(RandomSource random) {
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