Paper/patches/server/0005-MC-Dev-fixes.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 30 Mar 2016 19:36:20 -0400
Subject: [PATCH] MC Dev fixes


diff --git a/src/main/java/net/minecraft/Util.java b/src/main/java/net/minecraft/Util.java
index 486d01f5cb69c58878ad7d2fa06ee1154486e55d..58dbe9077fc12964477d6a6fb57d67c41865412c 100644
--- a/src/main/java/net/minecraft/Util.java
+++ b/src/main/java/net/minecraft/Util.java
@@ -345,7 +345,7 @@ public class Util {
     }
 
     public static <K> Strategy<K> identityStrategy() {
-        return Util.IdentityStrategy.INSTANCE;
+        return (Strategy<K>) Util.IdentityStrategy.INSTANCE; // Paper - decompile fix
     }
 
     public static <V> CompletableFuture<List<V>> sequence(List<? extends CompletableFuture<? extends V>> futures) {
diff --git a/src/main/java/net/minecraft/core/BlockPos.java b/src/main/java/net/minecraft/core/BlockPos.java
index dc88152a1458dadd102989d4fc5ffd5bbc7eb523..53f438b3747ff20dd18bc757b5b672aaa9db7b81 100644
--- a/src/main/java/net/minecraft/core/BlockPos.java
+++ b/src/main/java/net/minecraft/core/BlockPos.java
@@ -375,12 +375,12 @@ public class BlockPos extends Vec3i {
                     if (this.index == l) {
                         return this.endOfData();
                     } else {
-                        int i = this.index % i;
-                        int j = this.index / i;
-                        int k = j % j;
-                        int l = j / j;
+                        int offsetX = this.index % i; // Paper - decomp fix
+                        int u = this.index / i; // Paper - decomp fix
+                        int offsetY = u % j; // Paper - decomp fix
+                        int offsetZ = u / j; // Paper - decomp fix
                         ++this.index;
-                        return this.cursor.set(startX + i, startY + k, startZ + l);
+                        return this.cursor.set(startX + offsetX, startY + offsetY, startZ + offsetZ); // Paper - decomp fix
                     }
                 }
             };
diff --git a/src/main/java/net/minecraft/nbt/ListTag.java b/src/main/java/net/minecraft/nbt/ListTag.java
index 8c37ed1d70c5874bb1bd96fe33b087d4ddc2d68e..ea68b26e506e48d8238b7ee4266e61b211d52bd2 100644
--- a/src/main/java/net/minecraft/nbt/ListTag.java
+++ b/src/main/java/net/minecraft/nbt/ListTag.java
@@ -2,9 +2,12 @@ package net.minecraft.nbt;
 
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
+import it.unimi.dsi.fastutil.bytes.ByteOpenHashSet;
+import it.unimi.dsi.fastutil.bytes.ByteSet;
 import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 
@@ -102,6 +105,7 @@ public class ListTag extends CollectionTag<Tag> {
             return "TAG_List";
         }
     };
+    private static final ByteSet INLINE_ELEMENT_TYPES = new ByteOpenHashSet(Arrays.asList((byte) 1, (byte) 2, (byte) 3, (byte) 4, (byte) 5, (byte) 6)); // Paper - decompiler fix // todo: what is this
     private final List<Tag> list;
     private byte type;
 
diff --git a/src/main/java/net/minecraft/network/ConnectionProtocol.java b/src/main/java/net/minecraft/network/ConnectionProtocol.java
index 1f70fdaf08541ad57b2046e85e156be9446b372d..ea69f11e3cd9775998679baaccdaf980ee8fd498 100644
--- a/src/main/java/net/minecraft/network/ConnectionProtocol.java
+++ b/src/main/java/net/minecraft/network/ConnectionProtocol.java
@@ -15,6 +15,7 @@ import javax.annotation.Nullable;
 import net.minecraft.Util;
 import net.minecraft.network.protocol.Packet;
 import net.minecraft.network.protocol.PacketFlow;
+import net.minecraft.network.protocol.game.ClientGamePacketListener;
 import net.minecraft.network.protocol.game.ClientboundAddEntityPacket;
 import net.minecraft.network.protocol.game.ClientboundAddExperienceOrbPacket;
 import net.minecraft.network.protocol.game.ClientboundAddMobPacket;
@@ -117,6 +118,7 @@ import net.minecraft.network.protocol.game.ClientboundUpdateAttributesPacket;
 import net.minecraft.network.protocol.game.ClientboundUpdateMobEffectPacket;
 import net.minecraft.network.protocol.game.ClientboundUpdateRecipesPacket;
 import net.minecraft.network.protocol.game.ClientboundUpdateTagsPacket;
+import net.minecraft.network.protocol.game.ServerGamePacketListener;
 import net.minecraft.network.protocol.game.ServerboundAcceptTeleportationPacket;
 import net.minecraft.network.protocol.game.ServerboundBlockEntityTagQuery;
 import net.minecraft.network.protocol.game.ServerboundChangeDifficultyPacket;
@@ -163,26 +165,33 @@ import net.minecraft.network.protocol.game.ServerboundTeleportToEntityPacket;
 import net.minecraft.network.protocol.game.ServerboundUseItemOnPacket;
 import net.minecraft.network.protocol.game.ServerboundUseItemPacket;
 import net.minecraft.network.protocol.handshake.ClientIntentionPacket;
+import net.minecraft.network.protocol.handshake.ServerHandshakePacketListener;
+import net.minecraft.network.protocol.login.ClientLoginPacketListener;
 import net.minecraft.network.protocol.login.ClientboundCustomQueryPacket;
 import net.minecraft.network.protocol.login.ClientboundGameProfilePacket;
 import net.minecraft.network.protocol.login.ClientboundHelloPacket;
 import net.minecraft.network.protocol.login.ClientboundLoginCompressionPacket;
 import net.minecraft.network.protocol.login.ClientboundLoginDisconnectPacket;
+import net.minecraft.network.protocol.login.ServerLoginPacketListener;
 import net.minecraft.network.protocol.login.ServerboundCustomQueryPacket;
 import net.minecraft.network.protocol.login.ServerboundHelloPacket;
 import net.minecraft.network.protocol.login.ServerboundKeyPacket;
+import net.minecraft.network.protocol.status.ClientStatusPacketListener;
 import net.minecraft.network.protocol.status.ClientboundPongResponsePacket;
 import net.minecraft.network.protocol.status.ClientboundStatusResponsePacket;
+import net.minecraft.network.protocol.status.ServerStatusPacketListener;
 import net.minecraft.network.protocol.status.ServerboundPingRequestPacket;
 import net.minecraft.network.protocol.status.ServerboundStatusRequestPacket;
 import net.minecraft.util.VisibleForDebug;
 import org.apache.logging.log4j.LogManager;
 
 public enum ConnectionProtocol {
-    HANDSHAKING(-1, protocol().addFlow(PacketFlow.SERVERBOUND, (new ConnectionProtocol.PacketSet()).addPacket(ClientIntentionPacket.class, ClientIntentionPacket::new))),
-    PLAY(0, protocol().addFlow(PacketFlow.CLIENTBOUND, (new ConnectionProtocol.PacketSet()).addPacket(ClientboundAddEntityPacket.class, ClientboundAddEntityPacket::new).addPacket(ClientboundAddExperienceOrbPacket.class, ClientboundAddExperienceOrbPacket::new).addPacket(ClientboundAddMobPacket.class, ClientboundAddMobPacket::new).addPacket(ClientboundAddPaintingPacket.class, ClientboundAddPaintingPacket::new).addPacket(ClientboundAddPlayerPacket.class, ClientboundAddPlayerPacket::new).addPacket(ClientboundAddVibrationSignalPacket.class, ClientboundAddVibrationSignalPacket::new).addPacket(ClientboundAnimatePacket.class, ClientboundAnimatePacket::new).addPacket(ClientboundAwardStatsPacket.class, ClientboundAwardStatsPacket::new).addPacket(ClientboundBlockBreakAckPacket.class, ClientboundBlockBreakAckPacket::new).addPacket(ClientboundBlockDestructionPacket.class, ClientboundBlockDestructionPacket::new).addPacket(ClientboundBlockEntityDataPacket.class, ClientboundBlockEntityDataPacket::new).addPacket(ClientboundBlockEventPacket.class, ClientboundBlockEventPacket::new).addPacket(ClientboundBlockUpdatePacket.class, ClientboundBlockUpdatePacket::new).addPacket(ClientboundBossEventPacket.class, ClientboundBossEventPacket::new).addPacket(ClientboundChangeDifficultyPacket.class, ClientboundChangeDifficultyPacket::new).addPacket(ClientboundChatPacket.class, ClientboundChatPacket::new).addPacket(ClientboundClearTitlesPacket.class, ClientboundClearTitlesPacket::new).addPacket(ClientboundCommandSuggestionsPacket.class, ClientboundCommandSuggestionsPacket::new).addPacket(ClientboundCommandsPacket.class, ClientboundCommandsPacket::new).addPacket(ClientboundContainerClosePacket.class, ClientboundContainerClosePacket::new).addPacket(ClientboundContainerSetContentPacket.class, ClientboundContainerSetContentPacket::new).addPacket(ClientboundContainerSetDataPacket.class, ClientboundContainerSetDataPacket::new).addPacket(ClientboundContainerSetSlotPacket.class, ClientboundContainerSetSlotPacket::new).addPacket(ClientboundCooldownPacket.class, ClientboundCooldownPacket::new).addPacket(ClientboundCustomPayloadPacket.class, ClientboundCustomPayloadPacket::new).addPacket(ClientboundCustomSoundPacket.class, ClientboundCustomSoundPacket::new).addPacket(ClientboundDisconnectPacket.class, ClientboundDisconnectPacket::new).addPacket(ClientboundEntityEventPacket.class, ClientboundEntityEventPacket::new).addPacket(ClientboundExplodePacket.class, ClientboundExplodePacket::new).addPacket(ClientboundForgetLevelChunkPacket.class, ClientboundForgetLevelChunkPacket::new).addPacket(ClientboundGameEventPacket.class, ClientboundGameEventPacket::new).addPacket(ClientboundHorseScreenOpenPacket.class, ClientboundHorseScreenOpenPacket::new).addPacket(ClientboundInitializeBorderPacket.class, ClientboundInitializeBorderPacket::new).addPacket(ClientboundKeepAlivePacket.class, ClientboundKeepAlivePacket::new).addPacket(ClientboundLevelChunkWithLightPacket.class, ClientboundLevelChunkWithLightPacket::new).addPacket(ClientboundLevelEventPacket.class, ClientboundLevelEventPacket::new).addPacket(ClientboundLevelParticlesPacket.class, ClientboundLevelParticlesPacket::new).addPacket(ClientboundLightUpdatePacket.class, ClientboundLightUpdatePacket::new).addPacket(ClientboundLoginPacket.class, ClientboundLoginPacket::new).addPacket(ClientboundMapItemDataPacket.class, ClientboundMapItemDataPacket::new).addPacket(ClientboundMerchantOffersPacket.class, ClientboundMerchantOffersPacket::new).addPacket(ClientboundMoveEntityPacket.Pos.class, ClientboundMoveEntityPacket.Pos::read).addPacket(ClientboundMoveEntityPacket.PosRot.class, ClientboundMoveEntityPacket.PosRot::read).addPacket(ClientboundMoveEntityPacket.Rot.class, ClientboundMoveEntityPacket.Rot::read).addPacket(ClientboundMoveVehiclePacket.class, ClientboundMoveVehiclePacket::new).addPacket(ClientboundOpenBookPacket.class, ClientboundOpenBookPacket::new).addPacket(ClientboundOpenScreenPacket.class, ClientboundOpenScreenPacket::new).addPacket(ClientboundOpenSignEditorPacket.class, ClientboundOpenSignEditorPacket::new).addPacket
-    STATUS(1, protocol().addFlow(PacketFlow.SERVERBOUND, (new ConnectionProtocol.PacketSet()).addPacket(ServerboundStatusRequestPacket.class, ServerboundStatusRequestPacket::new).addPacket(ServerboundPingRequestPacket.class, ServerboundPingRequestPacket::new)).addFlow(PacketFlow.CLIENTBOUND, (new ConnectionProtocol.PacketSet()).addPacket(ClientboundStatusResponsePacket.class, ClientboundStatusResponsePacket::new).addPacket(ClientboundPongResponsePacket.class, ClientboundPongResponsePacket::new))),
-    LOGIN(2, protocol().addFlow(PacketFlow.CLIENTBOUND, (new ConnectionProtocol.PacketSet()).addPacket(ClientboundLoginDisconnectPacket.class, ClientboundLoginDisconnectPacket::new).addPacket(ClientboundHelloPacket.class, ClientboundHelloPacket::new).addPacket(ClientboundGameProfilePacket.class, ClientboundGameProfilePacket::new).addPacket(ClientboundLoginCompressionPacket.class, ClientboundLoginCompressionPacket::new).addPacket(ClientboundCustomQueryPacket.class, ClientboundCustomQueryPacket::new)).addFlow(PacketFlow.SERVERBOUND, (new ConnectionProtocol.PacketSet()).addPacket(ServerboundHelloPacket.class, ServerboundHelloPacket::new).addPacket(ServerboundKeyPacket.class, ServerboundKeyPacket::new).addPacket(ServerboundCustomQueryPacket.class, ServerboundCustomQueryPacket::new)));
+    // Paper start - fix decompile error - add correct generic packet listeners (e.g. ServerHandshakePacketListener) to PacketSet's generic type, matching the packet flow direction
+    HANDSHAKING(-1, protocol().addFlow(PacketFlow.SERVERBOUND, (new ConnectionProtocol.PacketSet<ServerHandshakePacketListener>()).addPacket(ClientIntentionPacket.class, ClientIntentionPacket::new))),
+    PLAY(0, protocol().addFlow(PacketFlow.CLIENTBOUND, (new ConnectionProtocol.PacketSet<ClientGamePacketListener>()).addPacket(ClientboundAddEntityPacket.class, ClientboundAddEntityPacket::new).addPacket(ClientboundAddExperienceOrbPacket.class, ClientboundAddExperienceOrbPacket::new).addPacket(ClientboundAddMobPacket.class, ClientboundAddMobPacket::new).addPacket(ClientboundAddPaintingPacket.class, ClientboundAddPaintingPacket::new).addPacket(ClientboundAddPlayerPacket.class, ClientboundAddPlayerPacket::new).addPacket(ClientboundAddVibrationSignalPacket.class, ClientboundAddVibrationSignalPacket::new).addPacket(ClientboundAnimatePacket.class, ClientboundAnimatePacket::new).addPacket(ClientboundAwardStatsPacket.class, ClientboundAwardStatsPacket::new).addPacket(ClientboundBlockBreakAckPacket.class, ClientboundBlockBreakAckPacket::new).addPacket(ClientboundBlockDestructionPacket.class, ClientboundBlockDestructionPacket::new).addPacket(ClientboundBlockEntityDataPacket.class, ClientboundBlockEntityDataPacket::new).addPacket(ClientboundBlockEventPacket.class, ClientboundBlockEventPacket::new).addPacket(ClientboundBlockUpdatePacket.class, ClientboundBlockUpdatePacket::new).addPacket(ClientboundBossEventPacket.class, ClientboundBossEventPacket::new).addPacket(ClientboundChangeDifficultyPacket.class, ClientboundChangeDifficultyPacket::new).addPacket(ClientboundChatPacket.class, ClientboundChatPacket::new).addPacket(ClientboundClearTitlesPacket.class, ClientboundClearTitlesPacket::new).addPacket(ClientboundCommandSuggestionsPacket.class, ClientboundCommandSuggestionsPacket::new).addPacket(ClientboundCommandsPacket.class, ClientboundCommandsPacket::new).addPacket(ClientboundContainerClosePacket.class, ClientboundContainerClosePacket::new).addPacket(ClientboundContainerSetContentPacket.class, ClientboundContainerSetContentPacket::new).addPacket(ClientboundContainerSetDataPacket.class, ClientboundContainerSetDataPacket::new).addPacket(ClientboundContainerSetSlotPacket.class, ClientboundContainerSetSlotPacket::new).addPacket(ClientboundCooldownPacket.class, ClientboundCooldownPacket::new).addPacket(ClientboundCustomPayloadPacket.class, ClientboundCustomPayloadPacket::new).addPacket(ClientboundCustomSoundPacket.class, ClientboundCustomSoundPacket::new).addPacket(ClientboundDisconnectPacket.class, ClientboundDisconnectPacket::new).addPacket(ClientboundEntityEventPacket.class, ClientboundEntityEventPacket::new).addPacket(ClientboundExplodePacket.class, ClientboundExplodePacket::new).addPacket(ClientboundForgetLevelChunkPacket.class, ClientboundForgetLevelChunkPacket::new).addPacket(ClientboundGameEventPacket.class, ClientboundGameEventPacket::new).addPacket(ClientboundHorseScreenOpenPacket.class, ClientboundHorseScreenOpenPacket::new).addPacket(ClientboundInitializeBorderPacket.class, ClientboundInitializeBorderPacket::new).addPacket(ClientboundKeepAlivePacket.class, ClientboundKeepAlivePacket::new).addPacket(ClientboundLevelChunkWithLightPacket.class, ClientboundLevelChunkWithLightPacket::new).addPacket(ClientboundLevelEventPacket.class, ClientboundLevelEventPacket::new).addPacket(ClientboundLevelParticlesPacket.class, ClientboundLevelParticlesPacket::new).addPacket(ClientboundLightUpdatePacket.class, ClientboundLightUpdatePacket::new).addPacket(ClientboundLoginPacket.class, ClientboundLoginPacket::new).addPacket(ClientboundMapItemDataPacket.class, ClientboundMapItemDataPacket::new).addPacket(ClientboundMerchantOffersPacket.class, ClientboundMerchantOffersPacket::new).addPacket(ClientboundMoveEntityPacket.Pos.class, ClientboundMoveEntityPacket.Pos::read).addPacket(ClientboundMoveEntityPacket.PosRot.class, ClientboundMoveEntityPacket.PosRot::read).addPacket(ClientboundMoveEntityPacket.Rot.class, ClientboundMoveEntityPacket.Rot::read).addPacket(ClientboundMoveVehiclePacket.class, ClientboundMoveVehiclePacket::new).addPacket(ClientboundOpenBookPacket.class, ClientboundOpenBookPacket::new).addPacket(ClientboundOpenScreenPacket.class, ClientboundOpenScreenPacket::new).addPacket(ClientboundOpenSignEditorPacket.class, ClientboundOpenSignEd
+    STATUS(1, protocol().addFlow(PacketFlow.SERVERBOUND, (new ConnectionProtocol.PacketSet<ServerStatusPacketListener>()).addPacket(ServerboundStatusRequestPacket.class, ServerboundStatusRequestPacket::new).addPacket(ServerboundPingRequestPacket.class, ServerboundPingRequestPacket::new)).addFlow(PacketFlow.CLIENTBOUND, (new ConnectionProtocol.PacketSet<ClientStatusPacketListener>()).addPacket(ClientboundStatusResponsePacket.class, ClientboundStatusResponsePacket::new).addPacket(ClientboundPongResponsePacket.class, ClientboundPongResponsePacket::new))),
+    LOGIN(2, protocol().addFlow(PacketFlow.CLIENTBOUND, (new ConnectionProtocol.PacketSet<ClientLoginPacketListener>()).addPacket(ClientboundLoginDisconnectPacket.class, ClientboundLoginDisconnectPacket::new).addPacket(ClientboundHelloPacket.class, ClientboundHelloPacket::new).addPacket(ClientboundGameProfilePacket.class, ClientboundGameProfilePacket::new).addPacket(ClientboundLoginCompressionPacket.class, ClientboundLoginCompressionPacket::new).addPacket(ClientboundCustomQueryPacket.class, ClientboundCustomQueryPacket::new)).addFlow(PacketFlow.SERVERBOUND, (new ConnectionProtocol.PacketSet<ServerLoginPacketListener>()).addPacket(ServerboundHelloPacket.class, ServerboundHelloPacket::new).addPacket(ServerboundKeyPacket.class, ServerboundKeyPacket::new).addPacket(ServerboundCustomQueryPacket.class, ServerboundCustomQueryPacket::new)));
+    // Paper end
 
     private static final int MIN_PROTOCOL_ID = -1;
     private static final int MAX_PROTOCOL_ID = 2;
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLoginPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLoginPacket.java
index a444455e8b216f9d1a34089c5793788923eec916..5b08eaaf42566827e1cb755710736f1306ef04db 100644
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLoginPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLoginPacket.java
@@ -12,32 +12,13 @@ import net.minecraft.world.level.GameType;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.dimension.DimensionType;
 
-public record ClientboundLoginPacket(int playerId, boolean hardcore, GameType gameType, GameType previousGameType, Set<ResourceKey<Level>> levels, RegistryAccess.RegistryHolder registryHolder, DimensionType dimensionType, ResourceKey<Level> dimension, long seed, int maxPlayers, int chunkRadius, int simulationDistance, boolean reducedDebugInfo, boolean showDeathScreen, boolean isDebug, boolean isFlat) implements Packet {
+public record ClientboundLoginPacket(int playerId, boolean hardcore, GameType gameType, GameType previousGameType, Set<ResourceKey<Level>> levels, RegistryAccess.RegistryHolder registryHolder, DimensionType dimensionType, ResourceKey<Level> dimension, long seed, int maxPlayers, int chunkRadius, int simulationDistance, boolean reducedDebugInfo, boolean showDeathScreen, boolean isDebug, boolean isFlat) implements Packet<ClientGamePacketListener> { // Paper - fix missing generic
     public ClientboundLoginPacket(FriendlyByteBuf buf) {
         this(buf.readInt(), buf.readBoolean(), GameType.byId(buf.readByte()), GameType.byNullableId(buf.readByte()), buf.readCollection(Sets::newHashSetWithExpectedSize, (b) -> {
             return ResourceKey.create(Registry.DIMENSION_REGISTRY, b.readResourceLocation());
         }), buf.readWithCodec(RegistryAccess.RegistryHolder.NETWORK_CODEC), buf.readWithCodec(DimensionType.CODEC).get(), ResourceKey.create(Registry.DIMENSION_REGISTRY, buf.readResourceLocation()), buf.readLong(), buf.readVarInt(), buf.readVarInt(), buf.readVarInt(), buf.readBoolean(), buf.readBoolean(), buf.readBoolean(), buf.readBoolean());
     }
 
-    public ClientboundLoginPacket(int playerEntityId, boolean bl, GameType previousGameMode, @Nullable GameType gameType, Set<ResourceKey<Level>> set, RegistryAccess.RegistryHolder registryHolder, DimensionType dimensionType, ResourceKey<Level> resourceKey, long l, int maxPlayers, int chunkLoadDistance, int i, boolean bl2, boolean bl3, boolean bl4, boolean bl5) {
-        this.playerId = playerEntityId;
-        this.hardcore = bl;
-        this.gameType = previousGameMode;
-        this.previousGameType = gameType;
-        this.levels = set;
-        this.registryHolder = registryHolder;
-        this.dimensionType = dimensionType;
-        this.dimension = resourceKey;
-        this.seed = l;
-        this.maxPlayers = maxPlayers;
-        this.chunkRadius = chunkLoadDistance;
-        this.simulationDistance = i;
-        this.reducedDebugInfo = bl2;
-        this.showDeathScreen = bl3;
-        this.isDebug = bl4;
-        this.isFlat = bl5;
-    }
-
     @Override
     public void write(FriendlyByteBuf buf) {
         buf.writeInt(this.playerId);
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 6e97d5101be851518461df440d8160a2710afc0d..b06105d3920f68bcedb81359b0f62925421b338d 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1724,7 +1724,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
             PackRepository resourcepackrepository = this.packRepository;
 
             Objects.requireNonNull(this.packRepository);
-            return stream.map(resourcepackrepository::getPack).filter(Objects::nonNull).map(Pack::open).collect(ImmutableList.toImmutableList()); // CraftBukkit - decompile error
+            return stream.<Pack>map(resourcepackrepository::getPack).filter(Objects::nonNull).map(Pack::open).collect(ImmutableList.toImmutableList()); // CraftBukkit - decompile error // Paper - decompile error // todo: is this needed anymore?
         }, this).thenCompose((immutablelist) -> {
             return ServerResources.loadResources(immutablelist, this.registryHolder, this.isDedicatedServer() ? Commands.CommandSelection.DEDICATED : Commands.CommandSelection.INTEGRATED, this.getFunctionCompilationLevel(), this.executor, this);
         }).thenAcceptAsync((datapackresources) -> {
diff --git a/src/main/java/net/minecraft/server/level/Ticket.java b/src/main/java/net/minecraft/server/level/Ticket.java
index 062da1bddd9704f5fbc46e974e13e60cd500bbe2..ffc43e5d3d0563c9e9c171064511b2c65ddf67e1 100644
--- a/src/main/java/net/minecraft/server/level/Ticket.java
+++ b/src/main/java/net/minecraft/server/level/Ticket.java
@@ -21,7 +21,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
             return i;
         } else {
             int j = Integer.compare(System.identityHashCode(this.type), System.identityHashCode(ticket.type));
-            return j != 0 ? j : this.type.getComparator().compare(this.key, ticket.key);
+            return j != 0 ? j : this.type.getComparator().compare(this.key, (T)ticket.key); // Paper - decompile fix
         }
     }
 
diff --git a/src/main/java/net/minecraft/util/SortedArraySet.java b/src/main/java/net/minecraft/util/SortedArraySet.java
index d0f6eb3981a171c0f34870cb0472599d6cca9642..d1b2ba24ef54e01c6249c3b2ca16e80f03c001a6 100644
--- a/src/main/java/net/minecraft/util/SortedArraySet.java
+++ b/src/main/java/net/minecraft/util/SortedArraySet.java
@@ -28,7 +28,7 @@ public class SortedArraySet<T> extends AbstractSet<T> {
     }
 
     public static <T extends Comparable<T>> SortedArraySet<T> create(int initialCapacity) {
-        return new SortedArraySet<>(initialCapacity, Comparator.naturalOrder());
+        return new SortedArraySet<>(initialCapacity, Comparator.<T>naturalOrder()); // Paper - decompile fix
     }
 
     public static <T> SortedArraySet<T> create(Comparator<T> comparator) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiSection.java b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiSection.java
index 4c56628f7a930e1d46e486a957551425e25b0508..6514401da53772301be2b3abc827504903e43644 100644
--- a/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiSection.java
+++ b/src/main/java/net/minecraft/world/entity/ai/village/poi/PoiSection.java
@@ -30,7 +30,7 @@ public class PoiSection {
     private boolean isValid;
 
     public static Codec<PoiSection> codec(Runnable updateListener) {
-        return RecordCodecBuilder.create((instance) -> {
+        return RecordCodecBuilder.<PoiSection>create((instance) -> { // Paper - decompile fix
             return instance.group(RecordCodecBuilder.point(updateListener), Codec.BOOL.optionalFieldOf("Valid", Boolean.valueOf(false)).forGetter((poiSet) -> {
                 return poiSet.isValid;
             }), PoiRecord.codec(updateListener).listOf().fieldOf("Records").forGetter((poiSet) -> {
diff --git a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
index 2e2bc7213b7e19e945eba885ff5614f809c81db0..b4edadc980c8305613bb4277c7028e2588653857 100644
--- a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
+++ b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
@@ -75,7 +75,7 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
         }
 
         this.recipes = (Map) map1.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry1) -> {
-            return (entry1.getValue()); // CraftBukkit
+            return entry1.getValue(); // CraftBukkit // Paper - decompile fix - *shrugs internally* // todo: is this needed anymore?
         }));
         RecipeManager.LOGGER.info("Loaded {} recipes", map1.size());
     }
diff --git a/src/main/java/net/minecraft/world/level/TickNextTickData.java b/src/main/java/net/minecraft/world/level/TickNextTickData.java
index eb07e63f3c40fd8914cde50dfa789b1ed20b755a..3af31dc2c82c11ee78d497c5777615c17cb13c7a 100644
--- a/src/main/java/net/minecraft/world/level/TickNextTickData.java
+++ b/src/main/java/net/minecraft/world/level/TickNextTickData.java
@@ -39,7 +39,7 @@ public class TickNextTickData<T> {
     }
 
     public static <T> Comparator<TickNextTickData<T>> createTimeComparator() {
-        return Comparator.comparingLong((tickNextTickData) -> {
+        return Comparator.<TickNextTickData<T>>comparingLong((tickNextTickData) -> { // Paper - decompile fix
             return tickNextTickData.triggerTick;
         }).thenComparing((tickNextTickData) -> {
             return tickNextTickData.priority;
diff --git a/src/main/java/net/minecraft/world/level/biome/Biome.java b/src/main/java/net/minecraft/world/level/biome/Biome.java
index 3c20bd9405f7844d92fdb42a49efd260bff7c7a0..315a6bbdfa59d85be721735cfe727d34b28fc0ad 100644
--- a/src/main/java/net/minecraft/world/level/biome/Biome.java
+++ b/src/main/java/net/minecraft/world/level/biome/Biome.java
@@ -39,8 +39,32 @@ import org.apache.logging.log4j.Logger;
 
 public final class Biome {
     public static final Logger LOGGER = LogManager.getLogger();
-    public static final Codec<Biome> DIRECT_CODEC;
-    public static final Codec<Biome> NETWORK_CODEC;
+    // Paper start - decompile fix: move up verbatim from static block
+    public static final Codec<Biome> DIRECT_CODEC = RecordCodecBuilder.create((instance) -> {
+        return instance.group(Biome.ClimateSettings.CODEC.forGetter((biome) -> {
+            return biome.climateSettings;
+        }), Biome.BiomeCategory.CODEC.fieldOf("category").forGetter((biome) -> {
+            return biome.biomeCategory;
+        }), BiomeSpecialEffects.CODEC.fieldOf("effects").forGetter((biome) -> {
+            return biome.specialEffects;
+        }), BiomeGenerationSettings.CODEC.forGetter((biome) -> {
+            return biome.generationSettings;
+        }), MobSpawnSettings.CODEC.forGetter((biome) -> {
+            return biome.mobSettings;
+        })).apply(instance, Biome::new);
+    });
+    public static final Codec<Biome> NETWORK_CODEC = RecordCodecBuilder.create((instance) -> {
+        return instance.group(Biome.ClimateSettings.CODEC.forGetter((biome) -> {
+            return biome.climateSettings;
+        }), Biome.BiomeCategory.CODEC.fieldOf("category").forGetter((biome) -> {
+            return biome.biomeCategory;
+        }), BiomeSpecialEffects.CODEC.fieldOf("effects").forGetter((biome) -> {
+            return biome.specialEffects;
+        })).apply(instance, (climateSettings, biomeCategory, biomeSpecialEffects) -> {
+            return new Biome(climateSettings, biomeCategory, biomeSpecialEffects, BiomeGenerationSettings.EMPTY, MobSpawnSettings.EMPTY);
+        });
+    });
+    // Paper end
     public static final Codec<Supplier<Biome>> CODEC = RegistryFileCodec.create(Registry.BIOME_REGISTRY, DIRECT_CODEC);
     public static final Codec<List<Supplier<Biome>>> LIST_CODEC = RegistryFileCodec.homogeneousList(Registry.BIOME_REGISTRY, DIRECT_CODEC);
     private static final PerlinSimplexNoise TEMPERATURE_NOISE = new PerlinSimplexNoise(new WorldgenRandom(new LegacyRandomSource(1234L)), ImmutableList.of(0));
@@ -242,33 +266,6 @@ public final class Biome {
         return resourceLocation == null ? super.toString() : resourceLocation.toString();
     }
 
-    static {
-        DIRECT_CODEC = RecordCodecBuilder.create((instance) -> {
-            return instance.group(Biome.ClimateSettings.CODEC.forGetter((biome) -> {
-                return biome.climateSettings;
-            }), Biome.BiomeCategory.CODEC.fieldOf("category").forGetter((biome) -> {
-                return biome.biomeCategory;
-            }), BiomeSpecialEffects.CODEC.fieldOf("effects").forGetter((biome) -> {
-                return biome.specialEffects;
-            }), BiomeGenerationSettings.CODEC.forGetter((biome) -> {
-                return biome.generationSettings;
-            }), MobSpawnSettings.CODEC.forGetter((biome) -> {
-                return biome.mobSettings;
-            })).apply(instance, Biome::new);
-        });
-        NETWORK_CODEC = RecordCodecBuilder.create((instance) -> {
-            return instance.group(Biome.ClimateSettings.CODEC.forGetter((biome) -> {
-                return biome.climateSettings;
-            }), Biome.BiomeCategory.CODEC.fieldOf("category").forGetter((biome) -> {
-                return biome.biomeCategory;
-            }), BiomeSpecialEffects.CODEC.fieldOf("effects").forGetter((biome) -> {
-                return biome.specialEffects;
-            })).apply(instance, (climateSettings, biomeCategory, biomeSpecialEffects) -> {
-                return new Biome(climateSettings, biomeCategory, biomeSpecialEffects, BiomeGenerationSettings.EMPTY, MobSpawnSettings.EMPTY);
-            });
-        });
-    }
-
     public static class BiomeBuilder {
         @Nullable
         private Biome.Precipitation precipitation;