Paper/Spigot-Server-Patches/0003-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/SystemUtils.java b/src/main/java/net/minecraft/SystemUtils.java
index 14b1a51b9b675aa175c32990402551fa43ec1599..bc7757b929ecce998094ddcdf51a4703e165a6d6 100644
--- a/src/main/java/net/minecraft/SystemUtils.java
+++ b/src/main/java/net/minecraft/SystemUtils.java
@@ -65,8 +65,8 @@ public class SystemUtils {
         return Collectors.toMap(Entry::getKey, Entry::getValue);
     }
 
-    public static <T extends Comparable<T>> String a(IBlockState<T> iblockstate, Object object) {
-        return iblockstate.a((Comparable) object);
+    public static <T extends Comparable<T>> String a(IBlockState<T> iblockstate, T object) { // Paper - decompile fix
+        return iblockstate.a(object); // Paper - decompile fix
     }
 
     public static String a(String s, @Nullable MinecraftKey minecraftkey) {
@@ -234,8 +234,8 @@ public class SystemUtils {
     public static <T> T b(Iterable<T> iterable, @Nullable T t0) {
         Iterator<T> iterator = iterable.iterator();
 
-        Object object;
-        Object object1;
+        T object; // Paper - decompile fix
+        T object1; // Paper - decompile fix
 
         for (object1 = null; iterator.hasNext(); object1 = object) {
             object = iterator.next();
@@ -260,7 +260,7 @@ public class SystemUtils {
     }
 
     public static <K> Strategy<K> k() {
-        return SystemUtils.IdentityHashingStrategy.INSTANCE;
+        return (Strategy<K>) SystemUtils.IdentityHashingStrategy.INSTANCE; // Paper - decompile fix
     }
 
     public static <V> CompletableFuture<List<V>> b(List<? extends CompletableFuture<? extends V>> list) {
@@ -271,7 +271,7 @@ public class SystemUtils {
         list.forEach((completablefuture1) -> {
             int i = list1.size();
 
-            list1.add((Object) null);
+            list1.add(null); // Paper - decompile fix
             acompletablefuture[i] = completablefuture1.whenComplete((object, throwable) -> {
                 if (throwable != null) {
                     completablefuture.completeExceptionally(throwable);
diff --git a/src/main/java/net/minecraft/core/BlockPosition.java b/src/main/java/net/minecraft/core/BlockPosition.java
index f85889a232998520761731a17f3d293d3360fe2c..76675ad1633dbaebb180842b9914fac18741c62e 100644
--- a/src/main/java/net/minecraft/core/BlockPosition.java
+++ b/src/main/java/net/minecraft/core/BlockPosition.java
@@ -241,8 +241,8 @@ public class BlockPosition extends BaseBlockPosition {
         };
     }
 
-    public static Iterable<BlockPosition> a(BlockPosition blockposition, int i, int j, int k) {
-        int l = i + j + k;
+    public static Iterable<BlockPosition> a(BlockPosition blockposition, int p_i, int p_j, int p_k) { // Paper - decompile issues - variable name conflicts to inner class field refs
+        int l_decompiled = p_i + p_j + p_k; // Paper - decompile issues
         int i1 = blockposition.getX();
         int j1 = blockposition.getY();
         int k1 = blockposition.getZ();
@@ -270,15 +270,15 @@ public class BlockPosition extends BaseBlockPosition {
                                 ++this.l;
                                 if (this.l > this.j) {
                                     ++this.i;
-                                    if (this.i > l) {
+                                    if (this.i > l_decompiled) { // Paper - use proper l above (first line of this method)
                                         return (BlockPosition) this.endOfData();
                                     }
 
-                                    this.j = Math.min(i, this.i);
+                                    this.j = Math.min(p_i, this.i); // Paper - decompile issues
                                     this.l = -this.j;
                                 }
 
-                                this.k = Math.min(j, this.i - Math.abs(this.l));
+                                this.k = Math.min(p_j, this.i - Math.abs(this.l)); // Paper - decompile issues
                                 this.m = -this.k;
                             }
 
@@ -286,7 +286,7 @@ public class BlockPosition extends BaseBlockPosition {
                             int i2 = this.m;
                             int j2 = this.i - Math.abs(l1) - Math.abs(i2);
 
-                            if (j2 <= k) {
+                            if (j2 <= p_k) { // Paper - decompile issues
                                 this.n = j2 != 0;
                                 blockposition_mutableblockposition = this.h.d(i1 + l1, j1 + i2, k1 + j2);
                             }
@@ -355,13 +355,13 @@ public class BlockPosition extends BaseBlockPosition {
         };
     }
 
-    public static Iterable<BlockPosition.MutableBlockPosition> a(BlockPosition blockposition, int i, EnumDirection enumdirection, EnumDirection enumdirection1) {
+    public static Iterable<BlockPosition.MutableBlockPosition> a(BlockPosition blockposition, int I, EnumDirection enumdirection, EnumDirection enumdirection1) { // Paper - decompile fix
         Validate.validState(enumdirection.n() != enumdirection1.n(), "The two directions cannot be on the same axis", new Object[0]);
         return () -> {
             return new AbstractIterator<BlockPosition.MutableBlockPosition>() {
                 private final EnumDirection[] e = new EnumDirection[]{enumdirection, enumdirection1, enumdirection.opposite(), enumdirection1.opposite()};
                 private final BlockPosition.MutableBlockPosition f = blockposition.i().c(enumdirection1);
-                private final int g = 4 * i;
+                private final int g = 4 * I;
                 private int h = -1;
                 private int i;
                 private int j;
diff --git a/src/main/java/net/minecraft/core/RegistryBlockID.java b/src/main/java/net/minecraft/core/RegistryBlockID.java
index b173ed8a6abeee41ce48e03f6403f2eb4978155b..e543b6927280a14e1d1220534758289934e31282 100644
--- a/src/main/java/net/minecraft/core/RegistryBlockID.java
+++ b/src/main/java/net/minecraft/core/RegistryBlockID.java
@@ -27,7 +27,7 @@ public class RegistryBlockID<T> implements Registry<T> {
         this.b.put(t0, i);
 
         while (this.c.size() <= i) {
-            this.c.add((Object) null);
+            this.c.add(null); // Paper - decompile fix
         }
 
         this.c.set(i, t0);
@@ -41,6 +41,13 @@ public class RegistryBlockID<T> implements Registry<T> {
         this.a(t0, this.a);
     }
 
+    // Paper start - decompile fix
+    @Override
+    public int a(T t) {
+        return getId(t);
+    }
+    // Paper end
+
     public int getId(T t0) {
         Integer integer = (Integer) this.b.get(t0);
 
diff --git a/src/main/java/net/minecraft/nbt/NBTBase.java b/src/main/java/net/minecraft/nbt/NBTBase.java
index 170a65cb13e7b87f64cd28331431ba55d53702cd..d6e51f82f6df2d7058806f3e483766e18398af77 100644
--- a/src/main/java/net/minecraft/nbt/NBTBase.java
+++ b/src/main/java/net/minecraft/nbt/NBTBase.java
@@ -20,7 +20,7 @@ public interface NBTBase {
 
     NBTTagType<?> b();
 
-    NBTBase clone();
+    public NBTBase clone(); // Paper - decompile fix
 
     default String asString() {
         return this.toString();
diff --git a/src/main/java/net/minecraft/nbt/NBTCompressedStreamTools.java b/src/main/java/net/minecraft/nbt/NBTCompressedStreamTools.java
index 020c041461aaf771d5ec35a9afc6c4b914966d64..f792ac1639e16522695082caed754b1c2cb333b9 100644
--- a/src/main/java/net/minecraft/nbt/NBTCompressedStreamTools.java
+++ b/src/main/java/net/minecraft/nbt/NBTCompressedStreamTools.java
@@ -17,6 +17,7 @@ import java.util.zip.GZIPOutputStream;
 import net.minecraft.CrashReport;
 import net.minecraft.CrashReportSystemDetails;
 import net.minecraft.ReportedException;
+import io.netty.buffer.ByteBufInputStream; // Paper
 
 public class NBTCompressedStreamTools {
 
@@ -136,7 +137,7 @@ public class NBTCompressedStreamTools {
 
     public static NBTTagCompound a(DataInput datainput, NBTReadLimiter nbtreadlimiter) throws IOException {
         // Spigot start
-        if ( datainput instanceof io.netty.buffer.ByteBufInputStream )
+        if ( datainput instanceof ByteBufInputStream) // Paper
         {
             datainput = new DataInputStream(new org.spigotmc.LimitStream((InputStream) datainput, nbtreadlimiter));
         }
diff --git a/src/main/java/net/minecraft/nbt/NBTTagList.java b/src/main/java/net/minecraft/nbt/NBTTagList.java
index 35cca76fb7c7aa736e64185b44016e65cfaef6cd..4f6f6f51f9807bafa88482c0fe776c8b163107d7 100644
--- a/src/main/java/net/minecraft/nbt/NBTTagList.java
+++ b/src/main/java/net/minecraft/nbt/NBTTagList.java
@@ -53,7 +53,7 @@ public class NBTTagList extends NBTList<NBTBase> {
             return "TAG_List";
         }
     };
-    private static final ByteSet b = new ByteOpenHashSet(Arrays.asList(1, 2, 3, 4, 5, 6));
+    private static final ByteSet b = new ByteOpenHashSet(Arrays.asList((byte) 1, (byte) 2, (byte) 3, (byte) 4, (byte) 5, (byte) 6)); // Paper - decompiler fix
     private final List<NBTBase> list;
     private byte type;
 
diff --git a/src/main/java/net/minecraft/network/EnumProtocol.java b/src/main/java/net/minecraft/network/EnumProtocol.java
index ab08336043d4f558434ed1f38d25cc555ace1ac0..a892521db1197369bf6363bd2f5da24bf53643ab 100644
--- a/src/main/java/net/minecraft/network/EnumProtocol.java
+++ b/src/main/java/net/minecraft/network/EnumProtocol.java
@@ -12,6 +12,8 @@ import javax.annotation.Nullable;
 import net.minecraft.SystemUtils;
 import net.minecraft.network.protocol.EnumProtocolDirection;
 import net.minecraft.network.protocol.Packet;
+import net.minecraft.network.protocol.game.PacketListenerPlayIn;
+import net.minecraft.network.protocol.game.PacketListenerPlayOut;
 import net.minecraft.network.protocol.game.PacketPlayInAbilities;
 import net.minecraft.network.protocol.game.PacketPlayInAdvancements;
 import net.minecraft.network.protocol.game.PacketPlayInArmAnimation;
@@ -146,24 +148,30 @@ import net.minecraft.network.protocol.game.PacketPlayOutWindowItems;
 import net.minecraft.network.protocol.game.PacketPlayOutWorldBorder;
 import net.minecraft.network.protocol.game.PacketPlayOutWorldEvent;
 import net.minecraft.network.protocol.game.PacketPlayOutWorldParticles;
+import net.minecraft.network.protocol.handshake.PacketHandshakingInListener;
 import net.minecraft.network.protocol.handshake.PacketHandshakingInSetProtocol;
 import net.minecraft.network.protocol.login.PacketLoginInCustomPayload;
 import net.minecraft.network.protocol.login.PacketLoginInEncryptionBegin;
+import net.minecraft.network.protocol.login.PacketLoginInListener;
 import net.minecraft.network.protocol.login.PacketLoginInStart;
 import net.minecraft.network.protocol.login.PacketLoginOutCustomPayload;
 import net.minecraft.network.protocol.login.PacketLoginOutDisconnect;
 import net.minecraft.network.protocol.login.PacketLoginOutEncryptionBegin;
+import net.minecraft.network.protocol.login.PacketLoginOutListener;
 import net.minecraft.network.protocol.login.PacketLoginOutSetCompression;
 import net.minecraft.network.protocol.login.PacketLoginOutSuccess;
+import net.minecraft.network.protocol.status.PacketStatusInListener;
 import net.minecraft.network.protocol.status.PacketStatusInPing;
 import net.minecraft.network.protocol.status.PacketStatusInStart;
+import net.minecraft.network.protocol.status.PacketStatusOutListener;
 import net.minecraft.network.protocol.status.PacketStatusOutPong;
 import net.minecraft.network.protocol.status.PacketStatusOutServerInfo;
 import org.apache.logging.log4j.LogManager;
 
 public enum EnumProtocol {
 
-    HANDSHAKING(-1, b().a(EnumProtocolDirection.SERVERBOUND, (new EnumProtocol.a<>()).a(PacketHandshakingInSetProtocol.class, PacketHandshakingInSetProtocol::new))), PLAY(0, b().a(EnumProtocolDirection.CLIENTBOUND, (new EnumProtocol.a<>()).a(PacketPlayOutSpawnEntity.class, PacketPlayOutSpawnEntity::new).a(PacketPlayOutSpawnEntityExperienceOrb.class, PacketPlayOutSpawnEntityExperienceOrb::new).a(PacketPlayOutSpawnEntityLiving.class, PacketPlayOutSpawnEntityLiving::new).a(PacketPlayOutSpawnEntityPainting.class, PacketPlayOutSpawnEntityPainting::new).a(PacketPlayOutNamedEntitySpawn.class, PacketPlayOutNamedEntitySpawn::new).a(PacketPlayOutAnimation.class, PacketPlayOutAnimation::new).a(PacketPlayOutStatistic.class, PacketPlayOutStatistic::new).a(PacketPlayOutBlockBreak.class, PacketPlayOutBlockBreak::new).a(PacketPlayOutBlockBreakAnimation.class, PacketPlayOutBlockBreakAnimation::new).a(PacketPlayOutTileEntityData.class, PacketPlayOutTileEntityData::new).a(PacketPlayOutBlockAction.class, PacketPlayOutBlockAction::new).a(PacketPlayOutBlockChange.class, PacketPlayOutBlockChange::new).a(PacketPlayOutBoss.class, PacketPlayOutBoss::new).a(PacketPlayOutServerDifficulty.class, PacketPlayOutServerDifficulty::new).a(PacketPlayOutChat.class, PacketPlayOutChat::new).a(PacketPlayOutTabComplete.class, PacketPlayOutTabComplete::new).a(PacketPlayOutCommands.class, PacketPlayOutCommands::new).a(PacketPlayOutTransaction.class, PacketPlayOutTransaction::new).a(PacketPlayOutCloseWindow.class, PacketPlayOutCloseWindow::new).a(PacketPlayOutWindowItems.class, PacketPlayOutWindowItems::new).a(PacketPlayOutWindowData.class, PacketPlayOutWindowData::new).a(PacketPlayOutSetSlot.class, PacketPlayOutSetSlot::new).a(PacketPlayOutSetCooldown.class, PacketPlayOutSetCooldown::new).a(PacketPlayOutCustomPayload.class, PacketPlayOutCustomPayload::new).a(PacketPlayOutCustomSoundEffect.class, PacketPlayOutCustomSoundEffect::new).a(PacketPlayOutKickDisconnect.class, PacketPlayOutKickDisconnect::new).a(PacketPlayOutEntityStatus.class, PacketPlayOutEntityStatus::new).a(PacketPlayOutExplosion.class, PacketPlayOutExplosion::new).a(PacketPlayOutUnloadChunk.class, PacketPlayOutUnloadChunk::new).a(PacketPlayOutGameStateChange.class, PacketPlayOutGameStateChange::new).a(PacketPlayOutOpenWindowHorse.class, PacketPlayOutOpenWindowHorse::new).a(PacketPlayOutKeepAlive.class, PacketPlayOutKeepAlive::new).a(PacketPlayOutMapChunk.class, PacketPlayOutMapChunk::new).a(PacketPlayOutWorldEvent.class, PacketPlayOutWorldEvent::new).a(PacketPlayOutWorldParticles.class, PacketPlayOutWorldParticles::new).a(PacketPlayOutLightUpdate.class, PacketPlayOutLightUpdate::new).a(PacketPlayOutLogin.class, PacketPlayOutLogin::new).a(PacketPlayOutMap.class, PacketPlayOutMap::new).a(PacketPlayOutOpenWindowMerchant.class, PacketPlayOutOpenWindowMerchant::new).a(PacketPlayOutEntity.PacketPlayOutRelEntityMove.class, PacketPlayOutEntity.PacketPlayOutRelEntityMove::new).a(PacketPlayOutEntity.PacketPlayOutRelEntityMoveLook.class, PacketPlayOutEntity.PacketPlayOutRelEntityMoveLook::new).a(PacketPlayOutEntity.PacketPlayOutEntityLook.class, PacketPlayOutEntity.PacketPlayOutEntityLook::new).a(PacketPlayOutEntity.class, PacketPlayOutEntity::new).a(PacketPlayOutVehicleMove.class, PacketPlayOutVehicleMove::new).a(PacketPlayOutOpenBook.class, PacketPlayOutOpenBook::new).a(PacketPlayOutOpenWindow.class, PacketPlayOutOpenWindow::new).a(PacketPlayOutOpenSignEditor.class, PacketPlayOutOpenSignEditor::new).a(PacketPlayOutAutoRecipe.class, PacketPlayOutAutoRecipe::new).a(PacketPlayOutAbilities.class, PacketPlayOutAbilities::new).a(PacketPlayOutCombatEvent.class, PacketPlayOutCombatEvent::new).a(PacketPlayOutPlayerInfo.class, PacketPlayOutPlayerInfo::new).a(PacketPlayOutLookAt.class, PacketPlayOutLookAt::new).a(PacketPlayOutPosition.class, PacketPlayOutPosition::new).a(PacketPlayOutRecipes.class, PacketPlayOutRecipes::new).a(PacketPlayOutEntityDestroy.class, PacketPlayOutEntityDestroy::new).a(PacketPlayOutRemoveEntityEffect.class, PacketPlayOutRemoveEntityEffect::new).a(PacketPlayOutResourcePackSend.class, PacketPla
+    // Paper - fix decompile error - add generic names to < > like PacketListenerPlayOut
+    HANDSHAKING(-1, b().a(EnumProtocolDirection.SERVERBOUND, (new EnumProtocol.a<PacketHandshakingInListener>()).a(PacketHandshakingInSetProtocol.class, PacketHandshakingInSetProtocol::new))), PLAY(0, b().a(EnumProtocolDirection.CLIENTBOUND, (new EnumProtocol.a<PacketListenerPlayOut>()).a(PacketPlayOutSpawnEntity.class, PacketPlayOutSpawnEntity::new).a(PacketPlayOutSpawnEntityExperienceOrb.class, PacketPlayOutSpawnEntityExperienceOrb::new).a(PacketPlayOutSpawnEntityLiving.class, PacketPlayOutSpawnEntityLiving::new).a(PacketPlayOutSpawnEntityPainting.class, PacketPlayOutSpawnEntityPainting::new).a(PacketPlayOutNamedEntitySpawn.class, PacketPlayOutNamedEntitySpawn::new).a(PacketPlayOutAnimation.class, PacketPlayOutAnimation::new).a(PacketPlayOutStatistic.class, PacketPlayOutStatistic::new).a(PacketPlayOutBlockBreak.class, PacketPlayOutBlockBreak::new).a(PacketPlayOutBlockBreakAnimation.class, PacketPlayOutBlockBreakAnimation::new).a(PacketPlayOutTileEntityData.class, PacketPlayOutTileEntityData::new).a(PacketPlayOutBlockAction.class, PacketPlayOutBlockAction::new).a(PacketPlayOutBlockChange.class, PacketPlayOutBlockChange::new).a(PacketPlayOutBoss.class, PacketPlayOutBoss::new).a(PacketPlayOutServerDifficulty.class, PacketPlayOutServerDifficulty::new).a(PacketPlayOutChat.class, PacketPlayOutChat::new).a(PacketPlayOutTabComplete.class, PacketPlayOutTabComplete::new).a(PacketPlayOutCommands.class, PacketPlayOutCommands::new).a(PacketPlayOutTransaction.class, PacketPlayOutTransaction::new).a(PacketPlayOutCloseWindow.class, PacketPlayOutCloseWindow::new).a(PacketPlayOutWindowItems.class, PacketPlayOutWindowItems::new).a(PacketPlayOutWindowData.class, PacketPlayOutWindowData::new).a(PacketPlayOutSetSlot.class, PacketPlayOutSetSlot::new).a(PacketPlayOutSetCooldown.class, PacketPlayOutSetCooldown::new).a(PacketPlayOutCustomPayload.class, PacketPlayOutCustomPayload::new).a(PacketPlayOutCustomSoundEffect.class, PacketPlayOutCustomSoundEffect::new).a(PacketPlayOutKickDisconnect.class, PacketPlayOutKickDisconnect::new).a(PacketPlayOutEntityStatus.class, PacketPlayOutEntityStatus::new).a(PacketPlayOutExplosion.class, PacketPlayOutExplosion::new).a(PacketPlayOutUnloadChunk.class, PacketPlayOutUnloadChunk::new).a(PacketPlayOutGameStateChange.class, PacketPlayOutGameStateChange::new).a(PacketPlayOutOpenWindowHorse.class, PacketPlayOutOpenWindowHorse::new).a(PacketPlayOutKeepAlive.class, PacketPlayOutKeepAlive::new).a(PacketPlayOutMapChunk.class, PacketPlayOutMapChunk::new).a(PacketPlayOutWorldEvent.class, PacketPlayOutWorldEvent::new).a(PacketPlayOutWorldParticles.class, PacketPlayOutWorldParticles::new).a(PacketPlayOutLightUpdate.class, PacketPlayOutLightUpdate::new).a(PacketPlayOutLogin.class, PacketPlayOutLogin::new).a(PacketPlayOutMap.class, PacketPlayOutMap::new).a(PacketPlayOutOpenWindowMerchant.class, PacketPlayOutOpenWindowMerchant::new).a(PacketPlayOutEntity.PacketPlayOutRelEntityMove.class, PacketPlayOutEntity.PacketPlayOutRelEntityMove::new).a(PacketPlayOutEntity.PacketPlayOutRelEntityMoveLook.class, PacketPlayOutEntity.PacketPlayOutRelEntityMoveLook::new).a(PacketPlayOutEntity.PacketPlayOutEntityLook.class, PacketPlayOutEntity.PacketPlayOutEntityLook::new).a(PacketPlayOutEntity.class, PacketPlayOutEntity::new).a(PacketPlayOutVehicleMove.class, PacketPlayOutVehicleMove::new).a(PacketPlayOutOpenBook.class, PacketPlayOutOpenBook::new).a(PacketPlayOutOpenWindow.class, PacketPlayOutOpenWindow::new).a(PacketPlayOutOpenSignEditor.class, PacketPlayOutOpenSignEditor::new).a(PacketPlayOutAutoRecipe.class, PacketPlayOutAutoRecipe::new).a(PacketPlayOutAbilities.class, PacketPlayOutAbilities::new).a(PacketPlayOutCombatEvent.class, PacketPlayOutCombatEvent::new).a(PacketPlayOutPlayerInfo.class, PacketPlayOutPlayerInfo::new).a(PacketPlayOutLookAt.class, PacketPlayOutLookAt::new).a(PacketPlayOutPosition.class, PacketPlayOutPosition::new).a(PacketPlayOutRecipes.class, PacketPlayOutRecipes::new).a(PacketPlayOutEntityDestroy.class, PacketPlayOutEntityDestroy::new).a(PacketPlayOutRemoveEntityEffect.class, PacketPlayOutRemoveEntityEffect::new).
 
     private static final EnumProtocol[] e = new EnumProtocol[4];
     private static final Map<Class<? extends Packet<?>>, EnumProtocol> f = Maps.newHashMap();
@@ -248,7 +256,7 @@ public enum EnumProtocol {
         private final List<Supplier<? extends Packet<T>>> b;
 
         private a() {
-            this.a = (Object2IntMap) SystemUtils.a((Object) (new Object2IntOpenHashMap()), (object2intopenhashmap) -> {
+            this.a = (Object2IntMap) SystemUtils.a(new Object2IntOpenHashMap(), (object2intopenhashmap) -> { // Paper - fix decompile error
                 object2intopenhashmap.defaultReturnValue(-1);
             });
             this.b = Lists.newArrayList();
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index e4fae57da4ee232a818e608912f021694bcea0f2..078631631616874741b0e0662e51b3faadcddcec 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1665,9 +1665,9 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
             ResourcePackRepository resourcepackrepository = this.resourcePackRepository;
 
             this.resourcePackRepository.getClass();
-            return stream.map(resourcepackrepository::a).filter(Objects::nonNull).map(ResourcePackLoader::d).collect(ImmutableList.toImmutableList()); // CraftBukkit - decompile error
+            return stream.<ResourcePackLoader>map(resourcepackrepository::a).filter(Objects::nonNull).map(ResourcePackLoader::d).collect(ImmutableList.toImmutableList()); // CraftBukkit - decompile error // Paper - decompile error
         }, this).thenCompose((immutablelist) -> {
-            return DataPackResources.a(immutablelist, this.j() ? CommandDispatcher.ServerType.DEDICATED : CommandDispatcher.ServerType.INTEGRATED, this.h(), this.executorService, this);
+            return DataPackResources.a(immutablelist, this.j() ? CommandDispatcher.ServerType.DEDICATED : CommandDispatcher.ServerType.INTEGRATED, this.h(), this.executorService, this); // Paper - decompile error
         }).thenAcceptAsync((datapackresources) -> {
             this.dataPackResources.close();
             this.dataPackResources = datapackresources;
diff --git a/src/main/java/net/minecraft/server/level/LightEngineThreaded.java b/src/main/java/net/minecraft/server/level/LightEngineThreaded.java
index 5a51f47f747382ec2a30bb47bcb1f7c61dd4c369..e066848127cb9a42e8c39422691cc65132cac6bb 100644
--- a/src/main/java/net/minecraft/server/level/LightEngineThreaded.java
+++ b/src/main/java/net/minecraft/server/level/LightEngineThreaded.java
@@ -179,7 +179,7 @@ public class LightEngineThreaded extends LightEngine implements AutoCloseable {
 
     public void queueUpdate() {
         if ((!this.c.isEmpty() || super.a()) && this.g.compareAndSet(false, true)) {
-            this.b.a((Object) (() -> {
+            this.b.a((() -> { // Paper - decompile error
                 this.b();
                 this.g.set(false);
             }));
diff --git a/src/main/java/net/minecraft/server/level/Ticket.java b/src/main/java/net/minecraft/server/level/Ticket.java
index 1c500e1193296f92f03a94e2cf085b215daaad6c..51ef4adf66c1e21093e63ab46fa47e66c2425fdb 100644
--- a/src/main/java/net/minecraft/server/level/Ticket.java
+++ b/src/main/java/net/minecraft/server/level/Ticket.java
@@ -23,7 +23,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
         } else {
             int j = Integer.compare(System.identityHashCode(this.a), System.identityHashCode(ticket.a));
 
-            return j != 0 ? j : this.a.a().compare(this.identifier, ticket.identifier);
+            return j != 0 ? j : this.a.a().compare(this.identifier, (T)ticket.identifier); // Paper - decompile fix
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/level/WorldServer.java b/src/main/java/net/minecraft/server/level/WorldServer.java
index d1e11c1b3300ebc324ad88d05170d4b1232f2ddb..b88b0890cb5b5b0c4c2c35456fdffb02e8cfcf91 100644
--- a/src/main/java/net/minecraft/server/level/WorldServer.java
+++ b/src/main/java/net/minecraft/server/level/WorldServer.java
@@ -1918,7 +1918,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
             }
 
             // CraftBukkit - decompile error
-            return (String) object2intopenhashmap.object2IntEntrySet().stream().sorted(Comparator.comparing(it.unimi.dsi.fastutil.objects.Object2IntMap.Entry<MinecraftKey>::getIntValue).reversed()).limit(5L).map((it_unimi_dsi_fastutil_objects_object2intmap_entry) -> {
+            return (String) object2intopenhashmap.object2IntEntrySet().stream().sorted(Comparator.comparing(Object2IntMap.Entry<MinecraftKey>::getIntValue).reversed()).limit(5L).map((it_unimi_dsi_fastutil_objects_object2intmap_entry) -> { // Paper - decompile fix
                 return it_unimi_dsi_fastutil_objects_object2intmap_entry.getKey() + ":" + it_unimi_dsi_fastutil_objects_object2intmap_entry.getIntValue();
             }).collect(Collectors.joining(","));
         } catch (Exception exception) {
diff --git a/src/main/java/net/minecraft/stats/ServerStatisticManager.java b/src/main/java/net/minecraft/stats/ServerStatisticManager.java
index a920e1de04a3b3d2f794c1490075f32072f48fb2..de87ed44e09b61f6d2e6a93d770a7c37b9f95fa1 100644
--- a/src/main/java/net/minecraft/stats/ServerStatisticManager.java
+++ b/src/main/java/net/minecraft/stats/ServerStatisticManager.java
@@ -203,7 +203,7 @@ public class ServerStatisticManager extends StatisticManager {
         ObjectIterator objectiterator = this.a.object2IntEntrySet().iterator();
 
         while (objectiterator.hasNext()) {
-            it.unimi.dsi.fastutil.objects.Object2IntMap.Entry<Statistic<?>> it_unimi_dsi_fastutil_objects_object2intmap_entry = (it.unimi.dsi.fastutil.objects.Object2IntMap.Entry) objectiterator.next();
+            Object2IntMap.Entry<Statistic<?>> it_unimi_dsi_fastutil_objects_object2intmap_entry = (Object2IntMap.Entry) objectiterator.next(); // Paper - decompile fix
             Statistic<?> statistic = (Statistic) it_unimi_dsi_fastutil_objects_object2intmap_entry.getKey();
 
             ((JsonObject) map.computeIfAbsent(statistic.getWrapper(), (statisticwrapper) -> {
diff --git a/src/main/java/net/minecraft/util/ArraySetSorted.java b/src/main/java/net/minecraft/util/ArraySetSorted.java
index e56b8e172d96c5508457fcf3f5a0cf0d2d2d8d7c..427daa94322f47b4eaf881d85a01fed239db549a 100644
--- a/src/main/java/net/minecraft/util/ArraySetSorted.java
+++ b/src/main/java/net/minecraft/util/ArraySetSorted.java
@@ -23,11 +23,11 @@ public class ArraySetSorted<T> extends AbstractSet<T> {
     }
 
     public static <T extends Comparable<T>> ArraySetSorted<T> a(int i) {
-        return new ArraySetSorted<>(i, Comparator.naturalOrder());
+        return new ArraySetSorted<>(i, (Comparator)Comparator.naturalOrder()); // Paper - decompile fix
     }
 
     private static <T> T[] a(Object[] aobject) {
-        return (Object[]) aobject;
+        return (T[])aobject; // Paper - decompile fix
     }
 
     private int c(T t0) {
@@ -101,7 +101,7 @@ public class ArraySetSorted<T> extends AbstractSet<T> {
     }
 
     public boolean remove(Object object) {
-        int i = this.c(object);
+        int i = this.c((T)object); // Paper - decompile fix
 
         if (i >= 0) {
             this.d(i);
@@ -116,7 +116,7 @@ public class ArraySetSorted<T> extends AbstractSet<T> {
     }
 
     public boolean contains(Object object) {
-        int i = this.c(object);
+        int i = this.c((T)object); // Paper - decompile fix
 
         return i >= 0;
     }
@@ -135,7 +135,7 @@ public class ArraySetSorted<T> extends AbstractSet<T> {
 
     public <U> U[] toArray(U[] au) {
         if (au.length < this.c) {
-            return (Object[]) Arrays.copyOf(this.b, this.c, au.getClass());
+            return (U[])Arrays.copyOf(this.b, this.c, au.getClass()); // Paper - decompile fix
         } else {
             System.arraycopy(this.b, 0, au, 0, this.c);
             if (au.length > this.c) {
diff --git a/src/main/java/net/minecraft/util/RegistryID.java b/src/main/java/net/minecraft/util/RegistryID.java
index d88e55c64f80707b4a9b1e271714c2dbdee9a38a..6150f7a5c5004ac79414ab22dbaa3439dc8afdb4 100644
--- a/src/main/java/net/minecraft/util/RegistryID.java
+++ b/src/main/java/net/minecraft/util/RegistryID.java
@@ -18,11 +18,18 @@ public class RegistryID<K> implements Registry<K> {
 
     public RegistryID(int i) {
         i = (int) ((float) i / 0.8F);
-        this.b = (Object[]) (new Object[i]);
+        this.b = (K[]) (new Object[i]); // Paper - decompile fix
         this.c = new int[i];
-        this.d = (Object[]) (new Object[i]);
+        this.d = (K[]) (new Object[i]); // Paper - decompile fix
     }
 
+    // Paper start - decompile fix
+    @Override
+    public int a(K k) {
+        return getId(k);
+    }
+    // Paper end
+
     public int getId(@Nullable K k0) {
         return this.c(this.b(k0, this.d(k0)));
     }
@@ -56,9 +63,9 @@ public class RegistryID<K> implements Registry<K> {
         K[] ak = this.b;
         int[] aint = this.c;
 
-        this.b = (Object[]) (new Object[i]);
+        this.b = (K[]) (new Object[i]); // Paper - decompile fix
         this.c = new int[i];
-        this.d = (Object[]) (new Object[i]);
+        this.d = (K[]) (new Object[i]); // Paper - decompile fix
         this.e = 0;
         this.f = 0;
 
diff --git a/src/main/java/net/minecraft/util/thread/IAsyncTaskHandler.java b/src/main/java/net/minecraft/util/thread/IAsyncTaskHandler.java
index 6abf1459cc97c261daf3c116521574d31a77a338..2b2c03ab62816f3d21ef953c4a45f55e3997cca6 100644
--- a/src/main/java/net/minecraft/util/thread/IAsyncTaskHandler.java
+++ b/src/main/java/net/minecraft/util/thread/IAsyncTaskHandler.java
@@ -55,7 +55,7 @@ public abstract class IAsyncTaskHandler<R extends Runnable> implements Mailbox<R
             return this.executeFuture(runnable);
         } else {
             runnable.run();
-            return CompletableFuture.completedFuture((Object) null);
+            return CompletableFuture.completedFuture(null); // Paper - decompile fix
         }
     }
 
@@ -90,14 +90,14 @@ public abstract class IAsyncTaskHandler<R extends Runnable> implements Mailbox<R
     }
 
     protected boolean executeNext() {
-        R r0 = (Runnable) this.d.peek();
+        R r0 = this.d.peek(); // Paper - decompile fix
 
         if (r0 == null) {
             return false;
         } else if (this.e == 0 && !this.canExecute(r0)) {
             return false;
         } else {
-            this.executeTask((Runnable) this.d.remove());
+            this.executeTask(this.d.remove()); // Paper - decompile fix
             return true;
         }
     }
diff --git a/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java b/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java
index e872e5c9157ca499491042040f0cc0f14f7d2946..2efca1fe92b2e93dcbf5337eea8855b1b2b9a564 100644
--- a/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java
+++ b/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java
@@ -100,7 +100,7 @@ public class ThreadedMailbox<T> implements Mailbox<T>, AutoCloseable, Runnable {
 
     public void run() {
         try {
-            this.a((i) -> {
+            this.a((int i) -> { // Paper - decompile fix
                 return i == 0;
             });
         } finally {
diff --git a/src/main/java/net/minecraft/world/entity/ai/village/poi/VillagePlace.java b/src/main/java/net/minecraft/world/entity/ai/village/poi/VillagePlace.java
index fe5dcce3873ca2724ac9d416d6f5d3c65d0fdafe..aa1d948e6aebef25f0f4c4c07f5131d2e8387e59 100644
--- a/src/main/java/net/minecraft/world/entity/ai/village/poi/VillagePlace.java
+++ b/src/main/java/net/minecraft/world/entity/ai/village/poi/VillagePlace.java
@@ -191,9 +191,9 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
     }
 
     private static boolean a(ChunkSection chunksection) {
-        Set set = VillagePlaceType.x;
+        Set<IBlockData> set = VillagePlaceType.x; // Paper - decompile error
 
-        set.getClass();
+        //set.getClass(); // Paper - decompile error
         return chunksection.a(set::contains);
     }
 
@@ -211,7 +211,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
         SectionPosition.b(new ChunkCoordIntPair(blockposition), Math.floorDiv(i, 16)).map((sectionposition) -> {
             return Pair.of(sectionposition, this.d(sectionposition.s()));
         }).filter((pair) -> {
-            return !(Boolean) ((Optional) pair.getSecond()).map(VillagePlaceSection::a).orElse(false);
+            return !(Boolean) (pair.getSecond()).map(VillagePlaceSection::a).orElse(false); // Paper - decompile fix
         }).map((pair) -> {
             return ((SectionPosition) pair.getFirst()).r();
         }).filter((chunkcoordintpair) -> {
@@ -263,7 +263,7 @@ public class VillagePlace extends RegionFileSection<VillagePlaceSection> {
 
         private final Predicate<? super VillagePlaceRecord> d;
 
-        private Occupancy(Predicate predicate) {
+        private Occupancy(Predicate<? super VillagePlaceRecord> predicate) { // Paper - decompile fix
             this.d = predicate;
         }
 
diff --git a/src/main/java/net/minecraft/world/entity/monster/EntityVindicator.java b/src/main/java/net/minecraft/world/entity/monster/EntityVindicator.java
index fc1f0cd4b70cdd0dda538d8867fab4cb8443120e..c181d5f5e6108ade54fc97c665897d1db5e90719 100644
--- a/src/main/java/net/minecraft/world/entity/monster/EntityVindicator.java
+++ b/src/main/java/net/minecraft/world/entity/monster/EntityVindicator.java
@@ -65,7 +65,7 @@ public class EntityVindicator extends EntityIllagerAbstract {
         this.goalSelector.a(2, new EntityIllagerAbstract.b(this));
         this.goalSelector.a(3, new EntityRaider.a(this, 10.0F));
         this.goalSelector.a(4, new EntityVindicator.c(this));
-        this.targetSelector.a(1, (new PathfinderGoalHurtByTarget(this, new Class[]{EntityRaider.class})).a());
+        this.targetSelector.a(1, (new PathfinderGoalHurtByTarget(this, new Class[]{EntityRaider.class})).a(new Class[0])); // Paper - decompile fix
         this.targetSelector.a(2, new PathfinderGoalNearestAttackableTarget<>(this, EntityHuman.class, true));
         this.targetSelector.a(3, new PathfinderGoalNearestAttackableTarget<>(this, EntityVillagerAbstract.class, true));
         this.targetSelector.a(3, new PathfinderGoalNearestAttackableTarget<>(this, EntityIronGolem.class, true));
diff --git a/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java b/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
index fe1dde99f758daa730acacc78237d92aa443ab6d..764ff5d9ffb541a356a6bc8b321e619849dde747 100644
--- a/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
+++ b/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
@@ -47,12 +47,12 @@ import net.minecraft.world.level.saveddata.maps.WorldMap;
 
 public class VillagerTrades {
 
-    public static final Map<VillagerProfession, Int2ObjectMap<VillagerTrades.IMerchantRecipeOption[]>> a = (Map) SystemUtils.a((Object) Maps.newHashMap(), (hashmap) -> {
+    public static final Map<VillagerProfession, Int2ObjectMap<VillagerTrades.IMerchantRecipeOption[]>> a = SystemUtils.a(Maps.newHashMap(), (hashmap) -> { // Paper - decompile fix
         hashmap.put(VillagerProfession.FARMER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WHEAT, 20, 16, 2), new VillagerTrades.b(Items.POTATO, 26, 16, 2), new VillagerTrades.b(Items.CARROT, 22, 16, 2), new VillagerTrades.b(Items.BEETROOT, 15, 16, 2), new VillagerTrades.h(Items.BREAD, 1, 6, 16, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Blocks.PUMPKIN, 6, 12, 10), new VillagerTrades.h(Items.PUMPKIN_PIE, 1, 4, 5), new VillagerTrades.h(Items.APPLE, 1, 4, 16, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.COOKIE, 3, 18, 10), new VillagerTrades.b(Blocks.MELON, 4, 12, 20)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Blocks.CAKE, 1, 1, 12, 15), new VillagerTrades.i(MobEffects.NIGHT_VISION, 100, 15), new VillagerTrades.i(MobEffects.JUMP, 160, 15), new VillagerTrades.i(MobEffects.WEAKNESS, 140, 15), new VillagerTrades.i(MobEffects.BLINDNESS, 120, 15), new VillagerTrades.i(MobEffects.POISON, 280, 15), new VillagerTrades.i(MobEffects.SATURATION, 7, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.GOLDEN_CARROT, 3, 3, 30), new VillagerTrades.h(Items.GLISTERING_MELON_SLICE, 4, 3, 30)})));
-        hashmap.put(VillagerProfession.FISHERMAN, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STRING, 20, 16, 2), new VillagerTrades.b(Items.COAL, 10, 16, 2), new VillagerTrades.g(Items.COD, 6, Items.COOKED_COD, 6, 16, 1), new VillagerTrades.h(Items.COD_BUCKET, 3, 1, 16, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COD, 15, 16, 10), new VillagerTrades.g(Items.SALMON, 6, Items.COOKED_SALMON, 6, 16, 5), new VillagerTrades.h(Items.rn, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.SALMON, 13, 16, 20), new VillagerTrades.e(Items.FISHING_ROD, 3, 3, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.TROPICAL_FISH, 6, 12, 30)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PUFFERFISH, 4, 12, 30), new VillagerTrades.c(1, 12, 30, ImmutableMap.builder().put(VillagerType.PLAINS, Items.OAK_BOAT).put(VillagerType.TAIGA, Items.SPRUCE_BOAT).put(VillagerType.SNOW, Items.SPRUCE_BOAT).put(VillagerType.DESERT, Items.JUNGLE_BOAT).put(VillagerType.JUNGLE, Items.JUNGLE_BOAT).put(VillagerType.SAVANNA, Items.ACACIA_BOAT).put(VillagerType.SWAMP, Items.DARK_OAK_BOAT).build())})));
+        hashmap.put(VillagerProfession.FISHERMAN, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STRING, 20, 16, 2), new VillagerTrades.b(Items.COAL, 10, 16, 2), new VillagerTrades.g(Items.COD, 6, Items.COOKED_COD, 6, 16, 1), new VillagerTrades.h(Items.COD_BUCKET, 3, 1, 16, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COD, 15, 16, 10), new VillagerTrades.g(Items.SALMON, 6, Items.COOKED_SALMON, 6, 16, 5), new VillagerTrades.h(Items.rn, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.SALMON, 13, 16, 20), new VillagerTrades.e(Items.FISHING_ROD, 3, 3, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.TROPICAL_FISH, 6, 12, 30)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PUFFERFISH, 4, 12, 30), new VillagerTrades.c(1, 12, 30, ImmutableMap.<VillagerType, Item>builder().put(VillagerType.PLAINS, Items.OAK_BOAT).put(VillagerType.TAIGA, Items.SPRUCE_BOAT).put(VillagerType.SNOW, Items.SPRUCE_BOAT).put(VillagerType.DESERT, Items.JUNGLE_BOAT).put(VillagerType.JUNGLE, Items.JUNGLE_BOAT).put(VillagerType.SAVANNA, Items.ACACIA_BOAT).put(VillagerType.SWAMP, Items.DARK_OAK_BOAT).build())}))); // Paper - add <VillagerType, Item> to ImmutableMap.<VillagerType, Item>.builder()
         hashmap.put(VillagerProfession.SHEPHERD, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Blocks.WHITE_WOOL, 18, 16, 2), new VillagerTrades.b(Blocks.BROWN_WOOL, 18, 16, 2), new VillagerTrades.b(Blocks.BLACK_WOOL, 18, 16, 2), new VillagerTrades.b(Blocks.GRAY_WOOL, 18, 16, 2), new VillagerTrades.h(Items.SHEARS, 2, 1, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WHITE_DYE, 12, 16, 10), new VillagerTrades.b(Items.GRAY_DYE, 12, 16, 10), new VillagerTrades.b(Items.BLACK_DYE, 12, 16, 10), new VillagerTrades.b(Items.LIGHT_BLUE_DYE, 12, 16, 10), new VillagerTrades.b(Items.LIME_DYE, 12, 16, 10), new VillagerTrades.h(Blocks.WHITE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.ORANGE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.MAGENTA_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.LIGHT_BLUE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.YELLOW_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.LIME_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.PINK_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.GRAY_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.LIGHT_GRAY_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.CYAN_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.PURPLE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.BLUE_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.BROWN_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.GREEN_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.RED_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.BLACK_WOOL, 1, 1, 16, 5), new VillagerTrades.h(Blocks.WHITE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.ORANGE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.MAGENTA_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.LIGHT_BLUE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.YELLOW_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.LIME_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.PINK_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.GRAY_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.LIGHT_GRAY_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.CYAN_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.PURPLE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.BLUE_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.BROWN_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.GREEN_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.RED_CARPET, 1, 4, 16, 5), new VillagerTrades.h(Blocks.BLACK_CARPET, 1, 4, 16, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.YELLOW_DYE, 12, 16, 20), new VillagerTrades.b(Items.LIGHT_GRAY_DYE, 12, 16, 20), new VillagerTrades.b(Items.ORANGE_DYE, 12, 16, 20), new VillagerTrades.b(Items.RED_DYE, 12, 16, 20), new VillagerTrades.b(Items.PINK_DYE, 12, 16, 20), new VillagerTrades.h(Blocks.WHITE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.YELLOW_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.RED_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.BLACK_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.BLUE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.BROWN_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.CYAN_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.GRAY_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.GREEN_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.LIGHT_BLUE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.LIGHT_GRAY_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.LIME_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.MAGENTA_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.ORANGE_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.PINK_BED, 3, 1, 12, 10), new VillagerTrades.h(Blocks.PURPLE_BED, 3, 1, 12, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.BROWN_DYE, 12, 16, 30), new VillagerTrades.b(Items.PURPLE_DYE, 12, 16, 30), new VillagerTrades.b(Items.BLUE_DYE, 12, 16, 30), new VillagerTrades.b(Items.GREEN_DYE, 12, 16, 30), new VillagerTrades.b(Items.MAGENTA_DYE, 12, 16, 30), new VillagerTrades.b(Items.CYAN_DYE, 12, 16, 30), new VillagerTrades.h(Items.WHITE_BANNER, 3, 1, 12, 15), new VillagerTrades.h(Items.BLUE_BANNER, 3, 1, 12, 15), new V
         hashmap.put(VillagerProfession.FLETCHER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STICK, 32, 16, 2), new VillagerTrades.h(Items.ARROW, 1, 16, 1), new VillagerTrades.g(Blocks.GRAVEL, 10, Items.FLINT, 10, 12, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.FLINT, 26, 12, 10), new VillagerTrades.h(Items.BOW, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.STRING, 14, 16, 20), new VillagerTrades.h(Items.CROSSBOW, 3, 1, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.FEATHER, 24, 16, 30), new VillagerTrades.e(Items.BOW, 2, 3, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.es, 8, 12, 30), new VillagerTrades.e(Items.CROSSBOW, 3, 3, 15), new VillagerTrades.j(Items.ARROW, 5, Items.TIPPED_ARROW, 5, 2, 12, 30)})));
-        hashmap.put(VillagerProfession.LIBRARIAN, a(ImmutableMap.builder().put(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PAPER, 24, 16, 2), new VillagerTrades.d(1), new VillagerTrades.h(Blocks.BOOKSHELF, 9, 1, 12, 1)}).put(2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.BOOK, 4, 12, 10), new VillagerTrades.d(5), new VillagerTrades.h(Items.rk, 1, 1, 5)}).put(3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.INK_SAC, 5, 12, 20), new VillagerTrades.d(10), new VillagerTrades.h(Items.az, 1, 4, 10)}).put(4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WRITABLE_BOOK, 2, 12, 30), new VillagerTrades.d(15), new VillagerTrades.h(Items.CLOCK, 5, 1, 15), new VillagerTrades.h(Items.COMPASS, 4, 1, 15)}).put(5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.NAME_TAG, 20, 1, 30)}).build()));
+        hashmap.put(VillagerProfession.LIBRARIAN, a(ImmutableMap.<Integer, IMerchantRecipeOption[]>builder().put(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PAPER, 24, 16, 2), new VillagerTrades.d(1), new VillagerTrades.h(Blocks.BOOKSHELF, 9, 1, 12, 1)}).put(2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.BOOK, 4, 12, 10), new VillagerTrades.d(5), new VillagerTrades.h(Items.rk, 1, 1, 5)}).put(3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.INK_SAC, 5, 12, 20), new VillagerTrades.d(10), new VillagerTrades.h(Items.az, 1, 4, 10)}).put(4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.WRITABLE_BOOK, 2, 12, 30), new VillagerTrades.d(15), new VillagerTrades.h(Items.CLOCK, 5, 1, 15), new VillagerTrades.h(Items.COMPASS, 4, 1, 15)}).put(5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.NAME_TAG, 20, 1, 30)}).build())); // Paper - add <Integer, IMerchantRecipeOption[]> to ImmutableMap.<Integer, IMerchantRecipeOption[]>.builder()
         hashmap.put(VillagerProfession.CARTOGRAPHER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.PAPER, 24, 16, 2), new VillagerTrades.h(Items.MAP, 7, 1, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.dP, 11, 16, 10), new VillagerTrades.k(13, StructureGenerator.MONUMENT, MapIcon.Type.MONUMENT, 12, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COMPASS, 1, 12, 20), new VillagerTrades.k(14, StructureGenerator.MANSION, MapIcon.Type.MANSION, 12, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.ITEM_FRAME, 7, 1, 15), new VillagerTrades.h(Items.WHITE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BLUE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIGHT_BLUE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.RED_BANNER, 3, 1, 15), new VillagerTrades.h(Items.PINK_BANNER, 3, 1, 15), new VillagerTrades.h(Items.GREEN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIME_BANNER, 3, 1, 15), new VillagerTrades.h(Items.GRAY_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BLACK_BANNER, 3, 1, 15), new VillagerTrades.h(Items.PURPLE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.MAGENTA_BANNER, 3, 1, 15), new VillagerTrades.h(Items.CYAN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BROWN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.YELLOW_BANNER, 3, 1, 15), new VillagerTrades.h(Items.ORANGE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIGHT_GRAY_BANNER, 3, 1, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.h(Items.GLOBE_BANNER_PATTERN, 8, 1, 30)})));
         hashmap.put(VillagerProfession.CLERIC, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.ROTTEN_FLESH, 32, 16, 2), new VillagerTrades.h(Items.REDSTONE, 1, 2, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.GOLD_INGOT, 3, 12, 10), new VillagerTrades.h(Items.LAPIS_LAZULI, 1, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.RABBIT_FOOT, 2, 12, 20), new VillagerTrades.h(Blocks.GLOWSTONE, 4, 1, 12, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.SCUTE, 4, 12, 30), new VillagerTrades.b(Items.GLASS_BOTTLE, 9, 12, 30), new VillagerTrades.h(Items.ENDER_PEARL, 5, 1, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.NETHER_WART, 22, 12, 30), new VillagerTrades.h(Items.EXPERIENCE_BOTTLE, 3, 1, 30)})));
         hashmap.put(VillagerProfession.ARMORER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.COAL, 15, 16, 2), new VillagerTrades.h(new ItemStack(Items.IRON_LEGGINGS), 7, 1, 12, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_BOOTS), 4, 1, 12, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_HELMET), 5, 1, 12, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_CHESTPLATE), 9, 1, 12, 1, 0.2F)}, 2, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.IRON_INGOT, 4, 12, 10), new VillagerTrades.h(new ItemStack(Items.rj), 36, 1, 12, 5, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_BOOTS), 1, 1, 12, 5, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_LEGGINGS), 3, 1, 12, 5, 0.2F)}, 3, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.b(Items.LAVA_BUCKET, 1, 12, 20), new VillagerTrades.b(Items.DIAMOND, 1, 12, 20), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_HELMET), 1, 1, 12, 10, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_CHESTPLATE), 4, 1, 12, 10, 0.2F), new VillagerTrades.h(new ItemStack(Items.SHIELD), 5, 1, 12, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.e(Items.DIAMOND_LEGGINGS, 14, 3, 15, 0.2F), new VillagerTrades.e(Items.DIAMOND_BOOTS, 8, 3, 15, 0.2F)}, 5, new VillagerTrades.IMerchantRecipeOption[]{new VillagerTrades.e(Items.DIAMOND_HELMET, 8, 3, 30, 0.2F), new VillagerTrades.e(Items.DIAMOND_CHESTPLATE, 16, 3, 30, 0.2F)})));
diff --git a/src/main/java/net/minecraft/world/item/crafting/CraftingManager.java b/src/main/java/net/minecraft/world/item/crafting/CraftingManager.java
index 54a636a3d5fdd0107cd0a41167ab1626469fe042..5ba58bf1a47c696235e6e7a4a6815104bc23de80 100644
--- a/src/main/java/net/minecraft/world/item/crafting/CraftingManager.java
+++ b/src/main/java/net/minecraft/world/item/crafting/CraftingManager.java
@@ -75,7 +75,7 @@ public class CraftingManager extends ResourceDataJson {
         }
 
         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*
         }));
         CraftingManager.LOGGER.info("Loaded {} recipes", map1.size());
     }
diff --git a/src/main/java/net/minecraft/world/level/IEntityAccess.java b/src/main/java/net/minecraft/world/level/IEntityAccess.java
index d24f97593777d6929271520f7501a800f1aadaa6..4ece69851e7b05016f52c291ce911eb791cf3a23 100644
--- a/src/main/java/net/minecraft/world/level/IEntityAccess.java
+++ b/src/main/java/net/minecraft/world/level/IEntityAccess.java
@@ -167,22 +167,22 @@ public interface IEntityAccess {
 
     @Nullable
     default <T extends EntityLiving> T a(Class<? extends T> oclass, PathfinderTargetCondition pathfindertargetcondition, @Nullable EntityLiving entityliving, double d0, double d1, double d2, AxisAlignedBB axisalignedbb) {
-        return this.a(this.a(oclass, axisalignedbb, (Predicate) null), pathfindertargetcondition, entityliving, d0, d1, d2);
+        return this.a(this.a(oclass, axisalignedbb, null), pathfindertargetcondition, entityliving, d0, d1, d2); // Paper - decompile fix
     }
 
     @Nullable
     default <T extends EntityLiving> T b(Class<? extends T> oclass, PathfinderTargetCondition pathfindertargetcondition, @Nullable EntityLiving entityliving, double d0, double d1, double d2, AxisAlignedBB axisalignedbb) {
-        return this.a(this.b(oclass, axisalignedbb, (Predicate) null), pathfindertargetcondition, entityliving, d0, d1, d2);
+        return this.a(this.b(oclass, axisalignedbb, null), pathfindertargetcondition, entityliving, d0, d1, d2); // Paper - decompile fix
     }
 
     @Nullable
     default <T extends EntityLiving> T a(List<? extends T> list, PathfinderTargetCondition pathfindertargetcondition, @Nullable EntityLiving entityliving, double d0, double d1, double d2) {
         double d3 = -1.0D;
         T t0 = null;
-        Iterator iterator = list.iterator();
+        Iterator<? extends T> iterator = list.iterator(); // Paper - decompile fix
 
         while (iterator.hasNext()) {
-            T t1 = (EntityLiving) iterator.next();
+            T t1 = iterator.next(); // Paper - decompile fix
 
             if (pathfindertargetcondition.a(entityliving, t1)) {
                 double d4 = t1.h(d0, d1, d2);
@@ -215,10 +215,10 @@ public interface IEntityAccess {
     default <T extends EntityLiving> List<T> a(Class<? extends T> oclass, PathfinderTargetCondition pathfindertargetcondition, EntityLiving entityliving, AxisAlignedBB axisalignedbb) {
         List<T> list = this.a(oclass, axisalignedbb, (Predicate) null);
         List<T> list1 = Lists.newArrayList();
-        Iterator iterator = list.iterator();
+        Iterator<T> iterator = list.iterator(); // Paper - decompile fix
 
         while (iterator.hasNext()) {
-            T t0 = (EntityLiving) iterator.next();
+            T t0 = iterator.next(); // Paper - decompile fix
 
             if (pathfindertargetcondition.a(entityliving, t0)) {
                 list1.add(t0);
diff --git a/src/main/java/net/minecraft/world/level/NextTickListEntry.java b/src/main/java/net/minecraft/world/level/NextTickListEntry.java
index 116a5e4ded3ccf935fd143f2512098c22ec2ad76..f3bcb96232d18abbcd86b079a7c5830bb30d75d2 100644
--- a/src/main/java/net/minecraft/world/level/NextTickListEntry.java
+++ b/src/main/java/net/minecraft/world/level/NextTickListEntry.java
@@ -38,13 +38,13 @@ public class NextTickListEntry<T> {
         return this.a.hashCode();
     }
 
-    public static <T> Comparator<NextTickListEntry<T>> a() {
+    public static <T> Comparator<Object> a() { // Paper - decompile fix
         return Comparator.comparingLong((nextticklistentry) -> {
-            return nextticklistentry.b;
+            return ((NextTickListEntry<T>) nextticklistentry).b; // Paper - decompile fix
         }).thenComparing((nextticklistentry) -> {
-            return nextticklistentry.c;
+            return ((NextTickListEntry<T>) nextticklistentry).c; // Paper - decompile fix
         }).thenComparingLong((nextticklistentry) -> {
-            return nextticklistentry.f;
+            return ((NextTickListEntry<T>) nextticklistentry).f; // Paper - decompile fix
         });
     }
 
diff --git a/src/main/java/net/minecraft/world/level/biome/BiomeBase.java b/src/main/java/net/minecraft/world/level/biome/BiomeBase.java
index 6672d74426d6a334d52f641c48d3a352c2bb6605..7147cdda756ccb3d4f6880802128f68601783883 100644
--- a/src/main/java/net/minecraft/world/level/biome/BiomeBase.java
+++ b/src/main/java/net/minecraft/world/level/biome/BiomeBase.java
@@ -49,8 +49,15 @@ import org.apache.logging.log4j.Logger;
 public final class BiomeBase {
 
     public static final Logger LOGGER = LogManager.getLogger();
+    // Paper start
+    private static class dProxy extends BiomeBase.d {
+        private dProxy(Precipitation biomebase_precipitation, float f, TemperatureModifier biomebase_temperaturemodifier, float f1) {
+            super(biomebase_precipitation, f, biomebase_temperaturemodifier, f1);
+        }
+    };
+    // Paper end
     public static final Codec<BiomeBase> b = RecordCodecBuilder.create((instance) -> {
-        return instance.group(BiomeBase.d.a.forGetter((biomebase) -> {
+        return instance.group(dProxy.a.forGetter((biomebase) -> { // Paper
             return biomebase.j;
         }), BiomeBase.Geography.r.fieldOf("category").forGetter((biomebase) -> {
             return biomebase.o;
@@ -67,7 +74,7 @@ public final class BiomeBase {
         })).apply(instance, BiomeBase::new);
     });
     public static final Codec<BiomeBase> c = RecordCodecBuilder.create((instance) -> {
-        return instance.group(BiomeBase.d.a.forGetter((biomebase) -> {
+        return instance.group(dProxy.a.forGetter((biomebase) -> { // Paper
             return biomebase.j;
         }), BiomeBase.Geography.r.fieldOf("category").forGetter((biomebase) -> {
             return biomebase.o;
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
index a549195e67236c0146861b896fb9e4907073af58..8d13e60f40e1b760e9e69969dc3f37bc6c70dbe9 100644
--- a/src/main/java/net/minecraft/world/level/block/piston/TileEntityPiston.java
+++ b/src/main/java/net/minecraft/world/level/block/piston/TileEntityPiston.java
@@ -160,7 +160,7 @@ public class TileEntityPiston extends TileEntity implements ITickable {
     private static void a(EnumDirection enumdirection, Entity entity, double d0, EnumDirection enumdirection1) {
         TileEntityPiston.h.set(enumdirection);
         entity.move(EnumMoveType.PISTON, new Vec3D(d0 * (double) enumdirection1.getAdjacentX(), d0 * (double) enumdirection1.getAdjacentY(), d0 * (double) enumdirection1.getAdjacentZ()));
-        TileEntityPiston.h.set((Object) null);
+        TileEntityPiston.h.set(null); // Paper - decompile fix
     }
 
     private void g(float f) {
diff --git a/src/main/java/net/minecraft/world/level/block/state/IBlockDataHolder.java b/src/main/java/net/minecraft/world/level/block/state/IBlockDataHolder.java
index 074bd5f060c6bb80568b72d23ce84c27ba774578..e4b59a85ee9b435b2e86d4c7d78b7224773f6967 100644
--- a/src/main/java/net/minecraft/world/level/block/state/IBlockDataHolder.java
+++ b/src/main/java/net/minecraft/world/level/block/state/IBlockDataHolder.java
@@ -28,11 +28,11 @@ public abstract class IBlockDataHolder<O, S> {
             } else {
                 IBlockState<?> iblockstate = (IBlockState) entry.getKey();
 
-                return iblockstate.getName() + "=" + this.a(iblockstate, (Comparable) entry.getValue());
+                return iblockstate.getName() + "=" + this.a((IBlockState) iblockstate, (Comparable) entry.getValue()); // Paper - decompile fix
             }
         }
 
-        private <T extends Comparable<T>> String a(IBlockState<T> iblockstate, Comparable<?> comparable) {
+        private <T extends Comparable<T>> String a(IBlockState<T> iblockstate, T comparable) { // Paper - decompile error
             return iblockstate.a(comparable);
         }
     };
@@ -48,11 +48,11 @@ public abstract class IBlockDataHolder<O, S> {
     }
 
     public <T extends Comparable<T>> S a(IBlockState<T> iblockstate) {
-        return this.set(iblockstate, (Comparable) a(iblockstate.getValues(), (Object) this.get(iblockstate)));
+        return this.set(iblockstate, a(iblockstate.getValues(), this.get(iblockstate))); // Paper - decompile error
     }
 
     protected static <T> T a(Collection<T> collection, T t0) {
-        Iterator iterator = collection.iterator();
+        Iterator<T> iterator = collection.iterator(); // Paper
 
         do {
             if (!iterator.hasNext()) {
@@ -94,7 +94,7 @@ public abstract class IBlockDataHolder<O, S> {
         if (comparable == null) {
             throw new IllegalArgumentException("Cannot get property " + iblockstate + " as it does not exist in " + this.c);
         } else {
-            return (Comparable) iblockstate.getType().cast(comparable);
+            return iblockstate.getType().cast(comparable); // Paper - decompile error
         }
     }
 
@@ -110,7 +110,7 @@ public abstract class IBlockDataHolder<O, S> {
         if (comparable == null) {
             throw new IllegalArgumentException("Cannot set property " + iblockstate + " as it does not exist in " + this.c);
         } else if (comparable == v0) {
-            return this;
+            return (S) this; // Paper - decompile error
         } else {
             S s0 = this.e.get(iblockstate, v0);
 
@@ -162,7 +162,7 @@ public abstract class IBlockDataHolder<O, S> {
         return codec.dispatch("Name", (iblockdataholder) -> {
             return iblockdataholder.c;
         }, (object) -> {
-            S s0 = (IBlockDataHolder) function.apply(object);
+            S s0 = function.apply(object); // Paper - decompile error
 
             return s0.getStateMap().isEmpty() ? Codec.unit(s0) : s0.d.fieldOf("Properties").codec();
         });
diff --git a/src/main/java/net/minecraft/world/level/block/state/properties/BlockStateEnum.java b/src/main/java/net/minecraft/world/level/block/state/properties/BlockStateEnum.java
index a6aaf0efed5a9c5e458ca04a80a7a5e71a31d886..de85894beae7ee7d276cf2af3daa77377ce131c3 100644
--- a/src/main/java/net/minecraft/world/level/block/state/properties/BlockStateEnum.java
+++ b/src/main/java/net/minecraft/world/level/block/state/properties/BlockStateEnum.java
@@ -21,10 +21,10 @@ public class BlockStateEnum<T extends Enum<T> & INamable> extends IBlockState<T>
     protected BlockStateEnum(String s, Class<T> oclass, Collection<T> collection) {
         super(s, oclass);
         this.a = ImmutableSet.copyOf(collection);
-        Iterator iterator = collection.iterator();
+        Iterator<T> iterator = collection.iterator(); // Paper - decompile fix
 
         while (iterator.hasNext()) {
-            T t0 = (Enum) iterator.next();
+            T t0 = iterator.next(); // Paper - Decompile fix
             String s1 = ((INamable) t0).getName();
 
             if (this.b.containsKey(s1)) {
diff --git a/src/main/java/net/minecraft/world/level/block/state/properties/IBlockState.java b/src/main/java/net/minecraft/world/level/block/state/properties/IBlockState.java
index 3e6ba74027685c6190426c825736e84cda87ca63..e3969bad5be64bb41e2973751605d6820c16f021 100644
--- a/src/main/java/net/minecraft/world/level/block/state/properties/IBlockState.java
+++ b/src/main/java/net/minecraft/world/level/block/state/properties/IBlockState.java
@@ -17,12 +17,10 @@ public abstract class IBlockState<T extends Comparable<T>> {
     private final Codec<IBlockState.a<T>> e;
 
     protected IBlockState(String s, Class<T> oclass) {
-        this.d = Codec.STRING.comapFlatMap((s1) -> {
-            return (DataResult) this.b(s1).map(DataResult::success).orElseGet(() -> {
-                return DataResult.error("Unable to read property: " + this + " with value: " + s1);
-            });
-        }, this::a);
-        this.e = this.d.xmap(this::b, IBlockState.a::b);
+        this.d = Codec.STRING.comapFlatMap((s1) -> this.b(s1).map(DataResult::success).orElseGet(() -> { // Paper - decompile error
+            return DataResult.error("Unable to read property: " + this + " with value: " + s1);
+        }), this::a);
+        this.e = this.d.xmap(this::b, (IBlockState.a<T> param) -> param.b()); // Paper - decompile fix
         this.a = oclass;
         this.b = s;
     }
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/IOWorker.java b/src/main/java/net/minecraft/world/level/chunk/storage/IOWorker.java
index 88c2643a18165bd7a9e6e056b926d6e894ff60d4..859561a5dccba6548967b685b20e8fcfc296db2a 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/IOWorker.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/IOWorker.java
@@ -89,7 +89,7 @@ public class IOWorker implements AutoCloseable {
             return this.a(() -> {
                 try {
                     this.d.a();
-                    return Either.left((Object) null);
+                    return Either.left(null); // Paper - decompile error
                 } catch (Exception exception) {
                     IOWorker.LOGGER.warn("Failed to synchronized chunks", exception);
                     return Either.right(exception);
@@ -123,13 +123,13 @@ public class IOWorker implements AutoCloseable {
     }
 
     private void c() {
-        this.c.a((Object) (new PairedQueue.b(IOWorker.Priority.LOW.ordinal(), this::b)));
+        this.c.a((new PairedQueue.b(IOWorker.Priority.LOW.ordinal(), this::b))); // Paper - decompile error
     }
 
     private void a(ChunkCoordIntPair chunkcoordintpair, IOWorker.a ioworker_a) {
         try {
             this.d.write(chunkcoordintpair, ioworker_a.a);
-            ioworker_a.b.complete((Object) null);
+            ioworker_a.b.complete(null); // Paper - decompile fix
         } catch (Exception exception) {
             IOWorker.LOGGER.error("Failed to store chunk {}", chunkcoordintpair, exception);
             ioworker_a.b.completeExceptionally(exception);
diff --git a/src/main/java/net/minecraft/world/level/dimension/end/EnderDragonBattle.java b/src/main/java/net/minecraft/world/level/dimension/end/EnderDragonBattle.java
index 6fb0c92e7cb6117d919af613dae87fa4e99f5081..f727cc456bd23816c4e70be83c395d1d8ca7d876 100644
--- a/src/main/java/net/minecraft/world/level/dimension/end/EnderDragonBattle.java
+++ b/src/main/java/net/minecraft/world/level/dimension/end/EnderDragonBattle.java
@@ -430,7 +430,7 @@ public class EnderDragonBattle {
             }
         }
 
-        worldgenendtrophy.b((WorldGenFeatureConfiguration) WorldGenFeatureConfiguration.k).a(this.world, this.world.getChunkProvider().getChunkGenerator(), new Random(), this.exitPortalLocation);
+        worldgenendtrophy.b(WorldGenFeatureConfiguration.k).a(this.world, this.world.getChunkProvider().getChunkGenerator(), new Random(), this.exitPortalLocation); // Paper - decompile fix
     }
 
     private EntityEnderDragon o() {
diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/StructureGenerator.java b/src/main/java/net/minecraft/world/level/levelgen/feature/StructureGenerator.java
index 44ad3fb2551f681b58b82e7c4f56bbc5a3b4486e..6724927be178cb9a358a9276d01894a63154b7b3 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/feature/StructureGenerator.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/feature/StructureGenerator.java
@@ -71,13 +71,13 @@ public abstract class StructureGenerator<C extends WorldGenFeatureConfiguration>
     public static final StructureGenerator<WorldGenFeatureVillageConfiguration> BASTION_REMNANT = a("Bastion_Remnant", new WorldGenFeatureBastionRemnant(WorldGenFeatureVillageConfiguration.a), WorldGenStage.Decoration.SURFACE_STRUCTURES);
     public static final List<StructureGenerator<?>> t = ImmutableList.of(StructureGenerator.PILLAGER_OUTPOST, StructureGenerator.VILLAGE, StructureGenerator.NETHER_FOSSIL);
     private static final MinecraftKey w = new MinecraftKey("jigsaw");
-    private static final Map<MinecraftKey, MinecraftKey> x = ImmutableMap.builder().put(new MinecraftKey("nvi"), StructureGenerator.w).put(new MinecraftKey("pcp"), StructureGenerator.w).put(new MinecraftKey("bastionremnant"), StructureGenerator.w).put(new MinecraftKey("runtime"), StructureGenerator.w).build();
+    private static final Map<MinecraftKey, MinecraftKey> x = ImmutableMap.<MinecraftKey, MinecraftKey>builder().put(new MinecraftKey("nvi"), StructureGenerator.w).put(new MinecraftKey("pcp"), StructureGenerator.w).put(new MinecraftKey("bastionremnant"), StructureGenerator.w).put(new MinecraftKey("runtime"), StructureGenerator.w).build(); // Paper - decompile fix
     private final Codec<StructureFeature<C, StructureGenerator<C>>> y;
 
     private static <F extends StructureGenerator<?>> F a(String s, F f0, WorldGenStage.Decoration worldgenstage_decoration) {
         StructureGenerator.a.put(s.toLowerCase(Locale.ROOT), f0);
         StructureGenerator.u.put(f0, worldgenstage_decoration);
-        return (StructureGenerator) IRegistry.a(IRegistry.STRUCTURE_FEATURE, s.toLowerCase(Locale.ROOT), (Object) f0);
+        return (F) IRegistry.<StructureGenerator<?>>a(IRegistry.STRUCTURE_FEATURE, s.toLowerCase(Locale.ROOT), f0); // Paper - decomp fix
     }
 
     public StructureGenerator(Codec<C> codec) {
diff --git a/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java b/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java
index 52564cce4146f49a906729b3ed9488a7a829ea3f..befc8f846c772d58ee687ad427bb71206b4dc43e 100644
--- a/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java
+++ b/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java
@@ -34,10 +34,10 @@ public class LightEngineStorageSky extends LightEngineStorage<LightEngineStorage
         int l = lightenginestoragesky_a.c.get(SectionPosition.f(j));
 
         if (l != lightenginestoragesky_a.b && k < l) {
-            NibbleArray nibblearray = this.a((LightEngineStorageArray) lightenginestoragesky_a, j);
+            NibbleArray nibblearray = this.a(lightenginestoragesky_a, j); // Paper - decompile fix
 
             if (nibblearray == null) {
-                for (i = BlockPosition.f(i); nibblearray == null; nibblearray = this.a((LightEngineStorageArray) lightenginestoragesky_a, j)) {
+                for (i = BlockPosition.f(i); nibblearray == null; nibblearray = this.a(lightenginestoragesky_a, j)) { // Paper - decompile fix
                     j = SectionPosition.a(j, EnumDirection.UP);
                     ++k;
                     if (k >= l) {
diff --git a/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java b/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java
index 45c1d79e0bb2fcffea31513c3d003d28140146b9..3910daeaa177639fa8055301304634c2014dc20f 100644
--- a/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java
+++ b/src/main/java/net/minecraft/world/level/storage/WorldPersistentData.java
@@ -44,7 +44,7 @@ public class WorldPersistentData {
         if (t0 != null) {
             return t0;
         } else {
-            T t1 = (PersistentBase) supplier.get();
+            T t1 = supplier.get(); // Paper - decompile fix
 
             this.a(t1);
             return t1;
@@ -53,7 +53,7 @@ public class WorldPersistentData {
 
     @Nullable
     public <T extends PersistentBase> T b(Supplier<T> supplier, String s) {
-        PersistentBase persistentbase = (PersistentBase) this.data.get(s);
+        T persistentbase = (T) this.data.get(s); // Paper - decompile fix
 
         if (persistentbase == null && !this.data.containsKey(s)) {
             persistentbase = this.c(supplier, s);
@@ -69,7 +69,7 @@ public class WorldPersistentData {
             File file = this.a(s);
 
             if (file.exists()) {
-                T t0 = (PersistentBase) supplier.get();
+                T t0 = supplier.get(); // Paper - decompile fix
                 NBTTagCompound nbttagcompound = this.a(s, SharedConstants.getGameVersion().getWorldVersion());
 
                 t0.a(nbttagcompound.getCompound("data"));
diff --git a/src/main/java/net/minecraft/world/level/storage/loot/entries/LootEntryAbstract.java b/src/main/java/net/minecraft/world/level/storage/loot/entries/LootEntryAbstract.java
index 9421e175fffab7014461aa02e7e36d719837ec11..b6abbe9f1de66cd8e9d2e7127813ce56a0446faf 100644
--- a/src/main/java/net/minecraft/world/level/storage/loot/entries/LootEntryAbstract.java
+++ b/src/main/java/net/minecraft/world/level/storage/loot/entries/LootEntryAbstract.java
@@ -43,7 +43,7 @@ public abstract class LootEntryAbstract implements LootEntryChildren {
 
         // CraftBukkit start
         @Override
-        public final void a(JsonObject jsonobject, T t0, JsonSerializationContext jsonserializationcontext) {
+        public void a(JsonObject jsonobject, T t0, JsonSerializationContext jsonserializationcontext) { // Paper - remove final
             if (!org.apache.commons.lang3.ArrayUtils.isEmpty(t0.d)) {
                 jsonobject.add("conditions", jsonserializationcontext.serialize(t0.d));
             }
diff --git a/src/main/java/net/minecraft/world/level/storage/loot/entries/LootSelectorEntry.java b/src/main/java/net/minecraft/world/level/storage/loot/entries/LootSelectorEntry.java
index 0e3fe138fc11bd7e648296922c651cecaab8e71e..ceb9a1e1b1d55a0a8cd74189450f356b9ad4c46c 100644
--- a/src/main/java/net/minecraft/world/level/storage/loot/entries/LootSelectorEntry.java
+++ b/src/main/java/net/minecraft/world/level/storage/loot/entries/LootSelectorEntry.java
@@ -132,7 +132,7 @@ public abstract class LootSelectorEntry extends LootEntryAbstract {
         @Override
         public T b(LootItemFunction.a lootitemfunction_a) {
             this.c.add(lootitemfunction_a.b());
-            return (LootSelectorEntry.a) this.d();
+            return this.d(); // Paper - decompile fix
         }
 
         protected LootItemFunction[] a() {
@@ -141,12 +141,12 @@ public abstract class LootSelectorEntry extends LootEntryAbstract {
 
         public T a(int i) {
             this.a = i;
-            return (LootSelectorEntry.a) this.d();
+            return this.d(); // Paper - decompile fix
         }
 
         public T b(int i) {
             this.b = i;
-            return (LootSelectorEntry.a) this.d();
+            return this.d(); // Paper - decompile fix
         }
     }
 
diff --git a/src/main/java/net/minecraft/world/level/storage/loot/functions/LootItemFunctionExplorationMap.java b/src/main/java/net/minecraft/world/level/storage/loot/functions/LootItemFunctionExplorationMap.java
index f516e7440ed306b1ace9b35ae82f70ca69df51f3..38125a60bad4830db9de3580ab6d85fd122a0689 100644
--- a/src/main/java/net/minecraft/world/level/storage/loot/functions/LootItemFunctionExplorationMap.java
+++ b/src/main/java/net/minecraft/world/level/storage/loot/functions/LootItemFunctionExplorationMap.java
@@ -89,7 +89,7 @@ public class LootItemFunctionExplorationMap extends LootItemFunctionConditional
         public b() {}
 
         public void a(JsonObject jsonobject, LootItemFunctionExplorationMap lootitemfunctionexplorationmap, JsonSerializationContext jsonserializationcontext) {
-            super.a(jsonobject, (LootItemFunctionConditional) lootitemfunctionexplorationmap, jsonserializationcontext);
+            super.a(jsonobject, lootitemfunctionexplorationmap, jsonserializationcontext); // Paper - decompile fix
             if (!lootitemfunctionexplorationmap.e.equals(LootItemFunctionExplorationMap.a)) {
                 jsonobject.add("destination", jsonserializationcontext.serialize(lootitemfunctionexplorationmap.e.i()));
             }
diff --git a/src/main/java/net/minecraft/world/phys/shapes/VoxelShapeMergerList.java b/src/main/java/net/minecraft/world/phys/shapes/VoxelShapeMergerList.java
index afd30320da51bf467d66e94f682936ed8db96d90..c58d380b96e81d65d7c254a9e53017e5157769b0 100644
--- a/src/main/java/net/minecraft/world/phys/shapes/VoxelShapeMergerList.java
+++ b/src/main/java/net/minecraft/world/phys/shapes/VoxelShapeMergerList.java
@@ -38,7 +38,7 @@ public final class VoxelShapeMergerList implements VoxelShapeMerger {
             double d1 = flag4 ? doublelist.getDouble(i++) : doublelist1.getDouble(j++);
 
             if ((i != 0 && flag2 || flag4 || flag1) && (j != 0 && flag3 || !flag4 || flag)) {
-                if (d0 < d1 - 1.0E-7D) {
+                if (!(d0 >= d1 - 1.0E-7D)) { // Paper - decompile error - welcome to hell
                     this.b.add(i - 1);
                     this.c.add(j - 1);
                     this.a.add(d1);