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/server/ArraySetSorted.java b/src/main/java/net/minecraft/server/ArraySetSorted.java
index a3afe60b0d85cf90bf7a170dc0a0b61a796381a7..85f799a713db0c822d46b689010f9f6bd43f5280 100644
--- a/src/main/java/net/minecraft/server/ArraySetSorted.java
+++ b/src/main/java/net/minecraft/server/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/server/BiomeBase.java b/src/main/java/net/minecraft/server/BiomeBase.java
index 6c2ed9c1b8567abcdb11bdc3dbaeed217a2f61e7..ae0ac8d383ca11a683465d8c83a8b8a66e567079 100644
--- a/src/main/java/net/minecraft/server/BiomeBase.java
+++ b/src/main/java/net/minecraft/server/BiomeBase.java
@@ -26,76 +26,31 @@ import org.apache.logging.log4j.Logger;
 public class BiomeBase {
 
     public static final Logger LOGGER = LogManager.getLogger();
-    public static final Codec<BiomeBase> b = RecordCodecBuilder.create((instance) -> {
-        RecordCodecBuilder recordcodecbuilder = BiomeBase.Precipitation.d.fieldOf("precipitation").forGetter((biomebase) -> {
-            return biomebase.o;
-        });
-        RecordCodecBuilder recordcodecbuilder1 = BiomeBase.Geography.r.fieldOf("category").forGetter((biomebase) -> {
-            return biomebase.n;
-        });
-        RecordCodecBuilder recordcodecbuilder2 = Codec.FLOAT.fieldOf("depth").forGetter((biomebase) -> {
-            return biomebase.h;
-        });
-        RecordCodecBuilder recordcodecbuilder3 = Codec.FLOAT.fieldOf("scale").forGetter((biomebase) -> {
-            return biomebase.i;
-        });
-        RecordCodecBuilder recordcodecbuilder4 = Codec.FLOAT.fieldOf("temperature").forGetter((biomebase) -> {
-            return biomebase.j;
-        });
-        RecordCodecBuilder recordcodecbuilder5 = Codec.FLOAT.fieldOf("downfall").forGetter((biomebase) -> {
-            return biomebase.k;
-        });
-        RecordCodecBuilder recordcodecbuilder6 = BiomeFog.a.fieldOf("effects").forGetter((biomebase) -> {
-            return biomebase.p;
-        });
-        RecordCodecBuilder recordcodecbuilder7 = Codec.INT.fieldOf("sky_color").forGetter((biomebase) -> {
-            return biomebase.t;
-        });
-        RecordCodecBuilder recordcodecbuilder8 = WorldGenSurfaceComposite.a.fieldOf("surface_builder").forGetter((biomebase) -> {
-            return biomebase.m;
-        });
-        Codec codec = WorldGenStage.Features.c;
-        Codec codec1 = WorldGenCarverWrapper.a.listOf();
-        Logger logger = BiomeBase.LOGGER;
-
-        logger.getClass();
-        RecordCodecBuilder recordcodecbuilder9 = Codec.simpleMap(codec, codec1.promotePartial(SystemUtils.a("Carver: ", logger::error)), INamable.a(WorldGenStage.Features.values())).fieldOf("carvers").forGetter((biomebase) -> {
-            return biomebase.q;
-        });
-
-        codec1 = WorldGenStage.Decoration.k;
-        Codec codec2 = WorldGenFeatureConfigured.b.listOf();
-        Logger logger1 = BiomeBase.LOGGER;
-
-        logger1.getClass();
-        RecordCodecBuilder recordcodecbuilder10 = Codec.simpleMap(codec1, codec2.promotePartial(SystemUtils.a("Feature: ", logger1::error)), INamable.a(WorldGenStage.Decoration.values())).fieldOf("features").forGetter((biomebase) -> {
-            return biomebase.r;
-        });
-
-        codec2 = StructureFeature.a.listOf();
-        logger1 = BiomeBase.LOGGER;
-        logger1.getClass();
-        RecordCodecBuilder recordcodecbuilder11 = codec2.promotePartial(SystemUtils.a("Structure start: ", logger1::error)).fieldOf("starts").forGetter((biomebase) -> {
-            return (List) biomebase.u.values().stream().sorted(Comparator.comparing((structurefeature) -> {
-                return IRegistry.STRUCTURE_FEATURE.getKey(structurefeature.b);
-            })).collect(Collectors.toList());
-        });
-        Codec codec3 = EnumCreatureType.g;
-        Codec codec4 = BiomeBase.BiomeMeta.b.listOf();
-        Logger logger2 = BiomeBase.LOGGER;
-
-        logger2.getClass();
-        return instance.group(recordcodecbuilder, recordcodecbuilder1, recordcodecbuilder2, recordcodecbuilder3, recordcodecbuilder4, recordcodecbuilder5, recordcodecbuilder6, recordcodecbuilder7, recordcodecbuilder8, recordcodecbuilder9, recordcodecbuilder10, recordcodecbuilder11, Codec.simpleMap(codec3, codec4.promotePartial(SystemUtils.a("Spawn data: ", logger2::error)), INamable.a(EnumCreatureType.values())).fieldOf("spawners").forGetter((biomebase) -> {
-            return biomebase.v;
-        }), BiomeBase.d.a.listOf().fieldOf("climate_parameters").forGetter((biomebase) -> {
-            return biomebase.x;
-        }), Codec.STRING.optionalFieldOf("parent").forGetter((biomebase) -> {
-            return Optional.ofNullable(biomebase.l);
-        })).apply(instance, BiomeBase::new);
+    // Paper decompile error - Spigots stupid decompiler
+    public static final Codec<BiomeBase> b = RecordCodecBuilder.create(i -> {
+        Codec k1 = WorldGenStage.Decoration.k; // Erase type - WorldGenstage.Decoration has wrong type
+        return i.group(
+            Precipitation.d.fieldOf("precipitation").forGetter(biome -> biome.o),
+            Geography.r.fieldOf("category").forGetter(biome -> biome.n),
+            Codec.FLOAT.fieldOf("depth").forGetter(biome -> biome.h),
+            Codec.FLOAT.fieldOf("scale").forGetter(biome -> biome.i),
+            Codec.FLOAT.fieldOf("temperature").forGetter(biome -> biome.j),
+            Codec.FLOAT.fieldOf("downfall").forGetter(biome -> biome.k),
+            BiomeFog.a.fieldOf("effects").forGetter(biome -> biome.p),
+            Codec.INT.fieldOf("sky_color").forGetter(biome -> biome.t),
+            WorldGenSurfaceComposite.a.fieldOf("surface_builder").forGetter(biome -> biome.m),
+            Codec.simpleMap(WorldGenStage.Features.c, WorldGenCarverWrapper.a.listOf().promotePartial(SystemUtils.a("Carver: ", LOGGER::error)), INamable.a(WorldGenStage.Features.values())).fieldOf("carvers").forGetter(biome -> biome.q),
+            Codec.simpleMap((Codec<WorldGenStage.Decoration>) k1, WorldGenFeatureConfigured.b.listOf().promotePartial(SystemUtils.a("Feature: ", LOGGER::error)), INamable.a(WorldGenStage.Decoration.values())).fieldOf("features").forGetter(biome -> biome.r),
+            StructureFeature.a.listOf().promotePartial(SystemUtils.a("Structure start: ", LOGGER::error)).fieldOf("starts").forGetter(biome -> biome.u.values().stream().sorted(Comparator.comparing(cf -> IRegistry.STRUCTURE_FEATURE.getKey(cf.b))).collect(Collectors.toList())),
+            Codec.simpleMap(EnumCreatureType.g, BiomeMeta.b.listOf().promotePartial(SystemUtils.a("Spawn data: ", LOGGER::error)), INamable.a(EnumCreatureType.values())).fieldOf("spawners").forGetter(biome -> biome.v),
+            d.a.listOf().fieldOf("climate_parameters").forGetter(biome -> biome.x),
+            Codec.STRING.optionalFieldOf("parent").forGetter(biome -> Optional.ofNullable(biome.l))
+        ).apply(i, BiomeBase::new);
+        // Paper end
     });
     public static final Set<BiomeBase> c = Sets.newHashSet();
-    public static final RegistryBlockID<BiomeBase> d = new RegistryBlockID<>();
-    protected static final NoiseGenerator3 e = new NoiseGenerator3(new SeededRandom(1234L), ImmutableList.of(0));
+    public static final RegistryBlockID<BiomeBase> reg = new RegistryBlockID<>(); // Paper - decompile error - rename
+    protected static final NoiseGenerator3 NOISE_GENERATOR_3 = new NoiseGenerator3(new SeededRandom(1234L), ImmutableList.of(0)); // Paper - decompile error - rename
     public static final NoiseGenerator3 f = new NoiseGenerator3(new SeededRandom(2345L), ImmutableList.of(0));
     @Nullable
     protected String g;
@@ -130,7 +85,7 @@ public class BiomeBase {
 
     @Nullable
     public static BiomeBase a(BiomeBase biomebase) {
-        return (BiomeBase) BiomeBase.d.fromId(IRegistry.BIOME.a((Object) biomebase));
+        return (BiomeBase) BiomeBase.reg.fromId(IRegistry.BIOME.a(biomebase)); // Paper - decompile fix / rename
     }
 
     public static <C extends WorldGenCarverConfiguration> WorldGenCarverWrapper<C> a(WorldGenCarverAbstract<C> worldgencarverabstract, C c0) {
@@ -197,7 +152,7 @@ public class BiomeBase {
         }, Function.identity()));
         this.v = map2;
         this.x = list1;
-        this.l = (String) optional.orElse((Object) null);
+        this.l = (String) optional.orElse(null); // Paper - decompile fix
         Stream stream = map1.values().stream().flatMap(Collection::stream).filter((worldgenfeatureconfigured) -> {
             return worldgenfeatureconfigured.d == WorldGenerator.DECORATED_FLOWER;
         });
@@ -250,7 +205,7 @@ public class BiomeBase {
 
     protected float a(BlockPosition blockposition) {
         if (blockposition.getY() > 64) {
-            float f = (float) (BiomeBase.e.a((double) ((float) blockposition.getX() / 8.0F), (double) ((float) blockposition.getZ() / 8.0F), false) * 4.0D);
+            float f = (float) (BiomeBase.NOISE_GENERATOR_3.a((double) ((float) blockposition.getX() / 8.0F), (double) ((float) blockposition.getZ() / 8.0F), false) * 4.0D); // Paper - decompile error - rename
 
             return this.getTemperature() - (f + (float) blockposition.getY() - 64.0F) * 0.05F / 30.0F;
         } else {
diff --git a/src/main/java/net/minecraft/server/BiomeFrozenDeepOcean.java b/src/main/java/net/minecraft/server/BiomeFrozenDeepOcean.java
index 2ac69bf2ae5cbb763fc95c948725373a5c9b95b3..fdc66fc1e3440b6678a1318e9a109f2b41bc8847 100644
--- a/src/main/java/net/minecraft/server/BiomeFrozenDeepOcean.java
+++ b/src/main/java/net/minecraft/server/BiomeFrozenDeepOcean.java
@@ -58,7 +58,7 @@ public class BiomeFrozenDeepOcean extends BiomeBase {
         }
 
         if (blockposition.getY() > 64) {
-            float f1 = (float) (BiomeFrozenDeepOcean.e.a((double) ((float) blockposition.getX() / 8.0F), (double) ((float) blockposition.getZ() / 8.0F), false) * 4.0D);
+            float f1 = (float) (BiomeFrozenDeepOcean.NOISE_GENERATOR_3.a((double) ((float) blockposition.getX() / 8.0F), (double) ((float) blockposition.getZ() / 8.0F), false) * 4.0D); // Paper - rename
 
             return f - (f1 + (float) blockposition.getY() - 64.0F) * 0.05F / 30.0F;
         } else {
diff --git a/src/main/java/net/minecraft/server/BiomeFrozenOcean.java b/src/main/java/net/minecraft/server/BiomeFrozenOcean.java
index 0d0ccaec8c497c9d222c7593684ed2d913d1881e..4b18e29ccb0cb15568367abb507b844011bd7f80 100644
--- a/src/main/java/net/minecraft/server/BiomeFrozenOcean.java
+++ b/src/main/java/net/minecraft/server/BiomeFrozenOcean.java
@@ -57,7 +57,7 @@ public final class BiomeFrozenOcean extends BiomeBase {
         }
 
         if (blockposition.getY() > 64) {
-            float f1 = (float) (BiomeFrozenOcean.e.a((double) ((float) blockposition.getX() / 8.0F), (double) ((float) blockposition.getZ() / 8.0F), false) * 4.0D);
+            float f1 = (float) (BiomeFrozenOcean.NOISE_GENERATOR_3.a((double) ((float) blockposition.getX() / 8.0F), (double) ((float) blockposition.getZ() / 8.0F), false) * 4.0D);  // Paper - rename
 
             return f - (f1 + (float) blockposition.getY() - 64.0F) * 0.05F / 30.0F;
         } else {
diff --git a/src/main/java/net/minecraft/server/Biomes.java b/src/main/java/net/minecraft/server/Biomes.java
index 0aa66addb2cb472b2ab90000d3f0e0f967353e0f..eaa527f4fe289a9492b12591154a60e5aa045252 100644
--- a/src/main/java/net/minecraft/server/Biomes.java
+++ b/src/main/java/net/minecraft/server/Biomes.java
@@ -88,7 +88,7 @@ public abstract class Biomes {
     private static BiomeBase a(int i, String s, BiomeBase biomebase) {
         IRegistry.a(IRegistry.BIOME, i, s, biomebase);
         if (biomebase.b()) {
-            BiomeBase.d.a(biomebase, IRegistry.BIOME.a(IRegistry.BIOME.get(new MinecraftKey(biomebase.l))));
+            BiomeBase.reg.a(biomebase, IRegistry.BIOME.a(IRegistry.BIOME.get(new MinecraftKey(biomebase.l))));
         }
 
         return biomebase;
diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
index 8eb94bcb605f882c9ce096fc758df5e3ae3ab28d..886b43e2b8f21c358b4d6785c677f14c91d191f3 100644
--- a/src/main/java/net/minecraft/server/BlockPosition.java
+++ b/src/main/java/net/minecraft/server/BlockPosition.java
@@ -220,8 +220,8 @@ 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();
@@ -249,15 +249,15 @@ 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;
                             }
 
@@ -265,7 +265,7 @@ 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);
                             }
diff --git a/src/main/java/net/minecraft/server/BlockStateEnum.java b/src/main/java/net/minecraft/server/BlockStateEnum.java
index 771841e08591955e61c7bcc5b09c8457652c1b9c..8162c11d14b8e88c2b572f9ddf6b7a15977047f8 100644
--- a/src/main/java/net/minecraft/server/BlockStateEnum.java
+++ b/src/main/java/net/minecraft/server/BlockStateEnum.java
@@ -20,10 +20,10 @@ 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/server/ChunkStatus.java b/src/main/java/net/minecraft/server/ChunkStatus.java
index 026c51b5ce80ff4161d2f126e8df9dc493a46957..fb3ddcc5d5a1154a7e0583135ecd541e8f67ff0b 100644
--- a/src/main/java/net/minecraft/server/ChunkStatus.java
+++ b/src/main/java/net/minecraft/server/ChunkStatus.java
@@ -90,7 +90,7 @@ public class ChunkStatus {
         return (CompletableFuture) function.apply(ichunkaccess);
     });
     private static final List<ChunkStatus> q = ImmutableList.of(ChunkStatus.FULL, ChunkStatus.FEATURES, ChunkStatus.LIQUID_CARVERS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS, ChunkStatus.STRUCTURE_STARTS);
-    private static final IntList r = (IntList) SystemUtils.a((Object) (new IntArrayList(a().size())), (intarraylist) -> {
+    private static final IntList r = (IntList) SystemUtils.a((new IntArrayList(a().size())), (java.util.function.Consumer<IntArrayList>)(IntArrayList intarraylist) -> { // Paper - decompile fix
         int i = 0;
 
         for (int j = a().size() - 1; j >= 0; --j) {
diff --git a/src/main/java/net/minecraft/server/CraftingManager.java b/src/main/java/net/minecraft/server/CraftingManager.java
index fbb708f5f7e4d2da9d96b595498da436b088a408..f27c7041cdc2f062f0abb222b02026194ab33c60 100644
--- a/src/main/java/net/minecraft/server/CraftingManager.java
+++ b/src/main/java/net/minecraft/server/CraftingManager.java
@@ -64,7 +64,7 @@ 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/server/EntityVindicator.java b/src/main/java/net/minecraft/server/EntityVindicator.java
index 4ab6e82a1415c40f3e2eee7414bf7de97f53b420..9c152b79164710d3d4175d0acbc9548d61390097 100644
--- a/src/main/java/net/minecraft/server/EntityVindicator.java
+++ b/src/main/java/net/minecraft/server/EntityVindicator.java
@@ -25,7 +25,7 @@ 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/server/IAsyncTaskHandler.java b/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
index 8886cedfe8809fe4711b5f2451e3e6456d2a6513..b77a0f0c2ee30df44b113aa6c8d4fa9206d3e2ba 100644
--- a/src/main/java/net/minecraft/server/IAsyncTaskHandler.java
+++ b/src/main/java/net/minecraft/server/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/server/IBlockState.java b/src/main/java/net/minecraft/server/IBlockState.java
index 88f1f201240ef0479c4f0f93f4caca454bbe7e9e..d63a4e4916ed5f5d901be0f4dd2c13cf66239055 100644
--- a/src/main/java/net/minecraft/server/IBlockState.java
+++ b/src/main/java/net/minecraft/server/IBlockState.java
@@ -16,12 +16,10 @@ 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/server/IEntityAccess.java b/src/main/java/net/minecraft/server/IEntityAccess.java
index 2517b70ddeb985ae7d708c6a1708b42c6a67dd00..c469b5db81fb040fc27cd2e4f7cd61797f56a62d 100644
--- a/src/main/java/net/minecraft/server/IEntityAccess.java
+++ b/src/main/java/net/minecraft/server/IEntityAccess.java
@@ -150,22 +150,22 @@ 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.g(d0, d1, d2);
@@ -198,10 +198,10 @@ 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/server/IOWorker.java b/src/main/java/net/minecraft/server/IOWorker.java
index c5a95f51ba43b94fd07f8df6576f45c3dd0216a3..38ccfd78639a85abcefb915c5c231be5881cebc1 100644
--- a/src/main/java/net/minecraft/server/IOWorker.java
+++ b/src/main/java/net/minecraft/server/IOWorker.java
@@ -83,7 +83,7 @@ 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);
@@ -117,13 +117,13 @@ 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/server/LightEngineStorageSky.java b/src/main/java/net/minecraft/server/LightEngineStorageSky.java
index 1e1f7ec6e6e6fc698a8a5118ce21321d104dc5eb..75d9065b32731dc635d9d09c48fb9643172381a9 100644
--- a/src/main/java/net/minecraft/server/LightEngineStorageSky.java
+++ b/src/main/java/net/minecraft/server/LightEngineStorageSky.java
@@ -28,10 +28,10 @@ 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/server/LightEngineThreaded.java b/src/main/java/net/minecraft/server/LightEngineThreaded.java
index 8b1f9116afd92b13426eb0e97066297705d202fb..a9dc8466278f9ec2becbcb643e6e1c973df72b82 100644
--- a/src/main/java/net/minecraft/server/LightEngineThreaded.java
+++ b/src/main/java/net/minecraft/server/LightEngineThreaded.java
@@ -167,7 +167,7 @@ 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/LootEntryAbstract.java b/src/main/java/net/minecraft/server/LootEntryAbstract.java
index 8cc8c60d3297a4ed98f3950a3971d83499ad1dfa..788078c209b8bcbd551cf0a52eb6172928d7b5f9 100644
--- a/src/main/java/net/minecraft/server/LootEntryAbstract.java
+++ b/src/main/java/net/minecraft/server/LootEntryAbstract.java
@@ -36,7 +36,7 @@ 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/server/LootItemFunctionExplorationMap.java b/src/main/java/net/minecraft/server/LootItemFunctionExplorationMap.java
index 3aa5cc4281cdba8738890e9ffd5c7a129e60c310..32a98e758b9df48005ddc5283eacdc5123a32c39 100644
--- a/src/main/java/net/minecraft/server/LootItemFunctionExplorationMap.java
+++ b/src/main/java/net/minecraft/server/LootItemFunctionExplorationMap.java
@@ -73,7 +73,7 @@ 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/server/LootSelectorEntry.java b/src/main/java/net/minecraft/server/LootSelectorEntry.java
index 998101592723abb26c91d1f92e98be1cf24c954d..ee9069c744df63cbb7f21dd9d28d6d554593674c 100644
--- a/src/main/java/net/minecraft/server/LootSelectorEntry.java
+++ b/src/main/java/net/minecraft/server/LootSelectorEntry.java
@@ -123,7 +123,7 @@ 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() {
@@ -132,12 +132,12 @@ 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/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 1360385091332ddf032b075990e59eee5543feb1..bae5ddbd97bd3f3422c699c42f025337b7cef574 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1549,9 +1549,9 @@ 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((List<IResourcePack>) 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/NBTBase.java b/src/main/java/net/minecraft/server/NBTBase.java
index 829a7ae0a2b77205fb8e8c5754d0d4333afa224d..8b9e47b4c7f5dc464fa617a59583df9e30a54045 100644
--- a/src/main/java/net/minecraft/server/NBTBase.java
+++ b/src/main/java/net/minecraft/server/NBTBase.java
@@ -18,7 +18,7 @@ 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/server/NBTCompressedStreamTools.java b/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java
index db66d4ac7dc1bede8b674cd9ad8f56dd989b6693..c9be8c7f40917056091f63d36311a10d6302acbb 100644
--- a/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java
+++ b/src/main/java/net/minecraft/server/NBTCompressedStreamTools.java
@@ -11,6 +11,7 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.GZIPOutputStream;
+import io.netty.buffer.ByteBufInputStream; // Paper
 
 public class NBTCompressedStreamTools {
 
@@ -75,7 +76,7 @@ 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/server/NBTTagList.java b/src/main/java/net/minecraft/server/NBTTagList.java
index b8bb5027ecccfc9b664145a1bfe3755f1a8af3eb..ad8a506bb430b26fe147a657a2f826daf9bf4d45 100644
--- a/src/main/java/net/minecraft/server/NBTTagList.java
+++ b/src/main/java/net/minecraft/server/NBTTagList.java
@@ -51,7 +51,7 @@ 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/server/NextTickListEntry.java b/src/main/java/net/minecraft/server/NextTickListEntry.java
index 8471920b8b92f0bbd0d3ee827e1b0a120f405f6c..e9c405fb5376c5733b9b0191cd5309173f4021e8 100644
--- a/src/main/java/net/minecraft/server/NextTickListEntry.java
+++ b/src/main/java/net/minecraft/server/NextTickListEntry.java
@@ -37,13 +37,13 @@ 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/server/RegistryBlockID.java b/src/main/java/net/minecraft/server/RegistryBlockID.java
index 7f89562e90ede1bdd06b71c0798d986ccbb7886e..4efcb8b595750891b421e524812542f0f67e9f3f 100644
--- a/src/main/java/net/minecraft/server/RegistryBlockID.java
+++ b/src/main/java/net/minecraft/server/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);
diff --git a/src/main/java/net/minecraft/server/RegistryID.java b/src/main/java/net/minecraft/server/RegistryID.java
index 2dc20b5c930c6845af41b35d69cdb03db639d63e..6cdd4d46d987132c3c241800b5d59cee2dfa25e2 100644
--- a/src/main/java/net/minecraft/server/RegistryID.java
+++ b/src/main/java/net/minecraft/server/RegistryID.java
@@ -17,9 +17,9 @@ 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
     }
 
     public int getId(@Nullable K k0) {
@@ -59,9 +59,9 @@ 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/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
index 68510457b527e61bf60bf1e7dfd664578172c00a..eefad79a01de61eff5e0bd3f709bfda030ebe20d 100644
--- a/src/main/java/net/minecraft/server/StructureGenerator.java
+++ b/src/main/java/net/minecraft/server/StructureGenerator.java
@@ -42,7 +42,7 @@ public abstract class StructureGenerator<C extends WorldGenFeatureConfiguration>
     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/server/SystemUtils.java b/src/main/java/net/minecraft/server/SystemUtils.java
index a1a5460e429356b52a75037c809cec85bd99084a..80ee8d196436e271833503a0e123401d1b3314a9 100644
--- a/src/main/java/net/minecraft/server/SystemUtils.java
+++ b/src/main/java/net/minecraft/server/SystemUtils.java
@@ -55,8 +55,8 @@ 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) {
@@ -224,8 +224,8 @@ 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();
@@ -250,7 +250,7 @@ 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) {
@@ -261,7 +261,7 @@ 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/server/ThreadedMailbox.java b/src/main/java/net/minecraft/server/ThreadedMailbox.java
index b64fc6e3dc8f628ead2c243baa48f2872bd8da0c..35f4d2d9591e625ab0bbeab7b606761e74965eec 100644
--- a/src/main/java/net/minecraft/server/ThreadedMailbox.java
+++ b/src/main/java/net/minecraft/server/ThreadedMailbox.java
@@ -99,7 +99,7 @@ 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/server/Ticket.java b/src/main/java/net/minecraft/server/Ticket.java
index ee2059cf8ef0a0372e02b91a4bf6fa8a0ab31bca..77bb6b092a0763ff27f90f0401a8a81b15aebb8c 100644
--- a/src/main/java/net/minecraft/server/Ticket.java
+++ b/src/main/java/net/minecraft/server/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/TileEntityPiston.java b/src/main/java/net/minecraft/server/TileEntityPiston.java
index dc52856856796524e4519c34ab92e37031013759..5b941321a7fdc561e6b794a1dce5d600083c505d 100644
--- a/src/main/java/net/minecraft/server/TileEntityPiston.java
+++ b/src/main/java/net/minecraft/server/TileEntityPiston.java
@@ -140,7 +140,7 @@ 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/server/VillagePlace.java b/src/main/java/net/minecraft/server/VillagePlace.java
index bc2fab806ee1cc7628841a065436f0339f17ecce..b8c15047771bd4527b86e514a3b950b2ffc6eef0 100644
--- a/src/main/java/net/minecraft/server/VillagePlace.java
+++ b/src/main/java/net/minecraft/server/VillagePlace.java
@@ -170,9 +170,9 @@ 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);
     }
 
@@ -190,7 +190,7 @@ 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) -> {
@@ -242,7 +242,7 @@ 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/server/VillagerTrades.java b/src/main/java/net/minecraft/server/VillagerTrades.java
index b0ec371c058c428a909faafe027e58e9c7f0cb38..532460e7549192dfe6170e2bf489edb46b8b5737 100644
--- a/src/main/java/net/minecraft/server/VillagerTrades.java
+++ b/src/main/java/net/minecraft/server/VillagerTrades.java
@@ -14,12 +14,12 @@ import javax.annotation.Nullable;
 
 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.rm, 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.rm, 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())}))); // <VillagerType, Item>
         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.rj, 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.rj, 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())); // Integer, IMerchantRecipeOption[]
         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.ri), 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/server/VoxelShapeMergerList.java b/src/main/java/net/minecraft/server/VoxelShapeMergerList.java
index e8daa74986f07163fd5318f431398b4f0efde6e8..71d2ae2a9c5a05351241b5a313e66ca15b0624ef 100644
--- a/src/main/java/net/minecraft/server/VoxelShapeMergerList.java
+++ b/src/main/java/net/minecraft/server/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);
diff --git a/src/main/java/net/minecraft/server/WorldPersistentData.java b/src/main/java/net/minecraft/server/WorldPersistentData.java
index 55fe7625af2207062f69188e9ab345ea68fac6ca..19e68a78310de787bca701bc2597c64e34a77d7c 100644
--- a/src/main/java/net/minecraft/server/WorldPersistentData.java
+++ b/src/main/java/net/minecraft/server/WorldPersistentData.java
@@ -37,7 +37,7 @@ 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;
@@ -46,7 +46,7 @@ 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);
@@ -62,7 +62,7 @@ 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"));