From 77ccfa00e52411d688ad2c08c1ef674b498af392 Mon Sep 17 00:00:00 2001
From: IzzelAliz <csh2001331@126.com>
Date: Wed, 21 Oct 2020 14:10:06 +0800
Subject: [PATCH] Workaround for MC-199487

---
 .../mixin/core/server/MinecraftServerMixin.java   |  4 ++++
 .../mixin/core/world/gen/WorldGenRegionMixin.java | 15 +++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/server/MinecraftServerMixin.java b/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/server/MinecraftServerMixin.java
index 35d6342d..1f60c58c 100644
--- a/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/server/MinecraftServerMixin.java
+++ b/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/server/MinecraftServerMixin.java
@@ -496,6 +496,10 @@ public abstract class MinecraftServerMixin extends RecursiveEventLoop<TickDelaye
         return getBukkitSender(wrapper);
     }
 
+    public boolean isDebugging() {
+        return false;
+    }
+
     private static MinecraftServer getServer() {
         return Bukkit.getServer() instanceof CraftServer ? ((CraftServer) Bukkit.getServer()).getServer() : null;
     }
diff --git a/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/world/gen/WorldGenRegionMixin.java b/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/world/gen/WorldGenRegionMixin.java
index 858eb19d..2f5bf87c 100644
--- a/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/world/gen/WorldGenRegionMixin.java
+++ b/arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/world/gen/WorldGenRegionMixin.java
@@ -2,14 +2,20 @@ package io.izzel.arclight.common.mixin.core.world.gen;
 
 import io.izzel.arclight.common.bridge.world.WorldBridge;
 import net.minecraft.entity.Entity;
+import net.minecraft.util.math.SectionPos;
 import net.minecraft.world.gen.WorldGenRegion;
+import net.minecraft.world.gen.feature.structure.Structure;
+import net.minecraft.world.gen.feature.structure.StructureStart;
 import net.minecraft.world.server.ServerWorld;
 import org.bukkit.craftbukkit.v.CraftWorld;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
 import org.spongepowered.asm.mixin.Shadow;
 
+import java.util.stream.Stream;
+
 @Mixin(WorldGenRegion.class)
 public abstract class WorldGenRegionMixin implements WorldBridge {
 
@@ -40,4 +46,13 @@ public abstract class WorldGenRegionMixin implements WorldBridge {
     public CreatureSpawnEvent.SpawnReason bridge$getAddEntityReason() {
         return CreatureSpawnEvent.SpawnReason.DEFAULT;
     }
+
+    /**
+     * @author IzzelAliz
+     * @reason MC-199487
+     */
+    @Overwrite
+    public Stream<? extends StructureStart<?>> func_241827_a(SectionPos p_241827_1_, Structure<?> p_241827_2_) {
+        return this.world.func_241112_a_().func_241464_a_((WorldGenRegion) (Object) this).func_235011_a_(p_241827_1_, p_241827_2_);
+    }
 }