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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Legitimoose <legitimoose@gmail.com>
Date: Wed, 28 Sep 2022 22:45:49 -0700
Subject: [PATCH] fix Jigsaw block kicking user
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
index fee4aef1bdae1b1ca57ff0b6c3fd2ec31439c37b..b56e4be3228489b5b910c23bde1717d5d3e2ad9a 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/JigsawBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/JigsawBlockEntity.java
@@ -108,7 +108,12 @@ public class JigsawBlockEntity extends BlockEntity {
public void generate(ServerLevel world, int maxDepth, boolean keepJigsaws) {
BlockPos blockPos = this.getBlockPos().relative(this.getBlockState().getValue(JigsawBlock.ORIENTATION).front());
Registry<StructureTemplatePool> registry = world.registryAccess().registryOrThrow(Registry.TEMPLATE_POOL_REGISTRY);
- Holder<StructureTemplatePool> holder = registry.getHolderOrThrow(this.pool);
+ // Paper start - Replace getHolderOrThrow with a null check
+ Holder<StructureTemplatePool> holder = registry.getHolder(this.pool).orElse(null);
+ if (holder == null) {
+ return;
+ }
+ // Paper end
JigsawPlacement.generateJigsaw(world, holder, this.target, maxDepth, blockPos, keepJigsaws);
}
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
index de7435f6596e200c8511224a0479c2ad499b2a97..bcf9eb1096b09748bcabba05bc9ffac494d3c611 100644
--- 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
@@ -89,7 +89,13 @@ public class StructureTemplatePool {
}
public StructurePoolElement getRandomTemplate(RandomSource random) {
+ //Paper start - Prevent random.nextInt throwing an IllegalArgumentException
+ if (this.templates.size() == 0) {
+ return EmptyPoolElement.INSTANCE;
+ } else {
return this.templates.get(random.nextInt(this.templates.size()));
+ }
+ // Paper end
}
public List<StructurePoolElement> getShuffledTemplates(RandomSource random) {
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