Add (untested) processing capability and second passes where appropriate

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/ext/fawe/v1_20_R2/PaperweightAdapter.java

@@ -857,12 +857,12 @@ public final class PaperweightAdapter implements BukkitImplAdapter<net.minecraft
     }
 
     private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
-        SideEffect.NEIGHBORS,
+            //FAWE start - FAWE-supported side effects
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
             SideEffect.LIGHTING,
-        SideEffect.VALIDATION,
+            SideEffect.NEIGHBORS
-        SideEffect.ENTITY_AI,
+            //FAWE end
-        SideEffect.EVENTS,
-        SideEffect.UPDATE
     );
 
     @Override

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/FaweMutableBlockPlaceContext.java

@@ -16,7 +16,11 @@ import javax.annotation.Nullable;
 
 public class FaweMutableBlockPlaceContext extends BlockPlaceContext {
 
-    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(Vec3.ZERO, Direction.NORTH, BlockPos.ZERO, false);
+    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(new Vec3(
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE
+    ), Direction.NORTH, BlockPos.ZERO, false);
     private final ServerLevel level;
     private BlockHitResult hitResult = null;
     private Direction direction = null;

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightFaweAdapter.java

@@ -4,7 +4,7 @@ import com.fastasyncworldedit.bukkit.adapter.FaweAdapter;
 import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
@@ -14,6 +14,7 @@ import com.fastasyncworldedit.core.util.NbtUtils;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Sets;
 import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
@@ -35,7 +36,6 @@ import com.sk89q.worldedit.registry.state.IntegerProperty;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.util.SideEffect;
-import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.world.RegenOptions;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -294,9 +294,16 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         return state.toBaseBlock();
     }
 
+    private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
+            SideEffect.LIGHTING,
+            SideEffect.NEIGHBORS
+    );
+
     @Override
     public Set<SideEffect> getSupportedSideEffects() {
-        return SideEffectSet.defaults().getSideEffectsToApply();
+        return SUPPORTED_SIDE_EFFECTS;
     }
 
     @Override
@@ -445,7 +452,7 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     public net.minecraft.world.level.block.state.BlockState adapt(BlockState blockState) {
-        return Block.stateById(ordinalToIbdID[blockState.getOrdinal()]);
+        return Block.stateById(getOrdinalToIbdID()[blockState.getOrdinal()]);
     }
 
     @Override
@@ -617,8 +624,8 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     @Override
-    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, Region region) {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(extent, mask, region);
     }
 
     private boolean wasAccessibleSinceLastSave(ChunkHolder holder) {

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightGetBlocks.java

@@ -20,6 +20,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
@@ -834,7 +835,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         nmsChunk.mustNotSave = false;
                         nmsChunk.setUnsaved(true);
                         // send to player
-                        if (Settings.settings().LIGHTING.MODE == 0 || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
+                        if (!set
+                                .getSideEffectSet()
+                                .shouldApply(SideEffect.LIGHTING) || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
                             this.send();
                         }
                         if (finalizer != null) {

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightLevelProxy.java

@@ -2,12 +2,12 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2;
 
 import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.extent.Extent;
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.FluidTags;
 import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.material.FluidState;
@@ -20,17 +20,15 @@ import javax.annotation.Nullable;
 public class PaperweightLevelProxy extends ServerLevel {
 
     private PaperweightFaweAdapter adapter;
-    private Extent extent;
+    private PaperweightPlacementStateProcessor processor;
-    private ServerLevel serverLevel;
-    private boolean enabled = false;
 
     @SuppressWarnings("DataFlowIssue")
-    public PaperweightLevelProxy() {
+    private PaperweightLevelProxy() {
         super(null, null, null, null, null, null, null, true, 0L, null, true, null, null, null, null);
         throw new IllegalStateException("Cannot be instantiated");
     }
 
-    public static PaperweightLevelProxy getInstance(ServerLevel level, Extent extent) {
+    public static PaperweightLevelProxy getInstance(PaperweightPlacementStateProcessor processor) {
         Unsafe unsafe = ReflectionUtils.getUnsafe();
 
         PaperweightLevelProxy newLevel;
@@ -39,45 +37,41 @@ public class PaperweightLevelProxy extends ServerLevel {
         } catch (InstantiationException e) {
             throw new RuntimeException(e);
         }
-        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin
+        newLevel.processor = processor;
-                .getInstance()
+        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin.getInstance().getBukkitImplAdapter());
-                .getBukkitImplAdapter());
-        newLevel.extent = extent;
-        newLevel.serverLevel = level;
         return newLevel;
     }
 
-    public void setEnabled(boolean enabled) {
-        this.enabled = enabled;
-    }
-
     @Nullable
     @Override
     public BlockEntity getBlockEntity(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getX() == Integer.MAX_VALUE) {
             return null;
         }
-        BlockEntity tileEntity = this.serverLevel.getChunkAt(blockPos).getBlockEntity(blockPos);
+        com.sk89q.jnbt.CompoundTag tag = processor.getTileAt(blockPos.getX(), blockPos.getY(), blockPos.getZ());
-        if (tileEntity == null) {
+        if (tag == null) {
             return null;
         }
-        BlockEntity newEntity = tileEntity.getType().create(blockPos, getBlockState(blockPos));
+        BlockState state = adapter.adapt(processor.getBlockStateAt(blockPos.getX(), blockPos.getY(), blockPos.getZ()));
-        newEntity.load((CompoundTag) adapter.fromNativeLin(this.extent.getFullBlock(
+        if (!(state.getBlock() instanceof EntityBlock entityBlock)) {
-                blockPos.getX(),
+            return null;
-                blockPos.getY(),
+        }
-                blockPos.getZ()
+        BlockEntity tileEntity = entityBlock.newBlockEntity(blockPos, state);
-        ).getNbtReference().getValue()));
+        tileEntity.load((CompoundTag) adapter.fromNative(tag));
-
+        return tileEntity;
-        return newEntity;
     }
 
     @Override
     @Nonnull
     public BlockState getBlockState(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getX() == Integer.MAX_VALUE) {
             return Blocks.AIR.defaultBlockState();
         }
-        com.sk89q.worldedit.world.block.BlockState state = this.extent.getBlock(blockPos.getX(), blockPos.getY(), blockPos.getZ());
+        com.sk89q.worldedit.world.block.BlockState state = processor.getBlockStateAt(
+                blockPos.getX(),
+                blockPos.getY(),
+                blockPos.getZ()
+        );
         return adapter.adapt(state);
     }
 
@@ -85,7 +79,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @Override
     @Nonnull
     public FluidState getFluidState(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getX() == Integer.MAX_VALUE) {
             return Fluids.EMPTY.defaultFluidState();
         }
         return getBlockState(pos).getFluidState();
@@ -94,7 +88,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @SuppressWarnings("unused")
     @Override
     public boolean isWaterAt(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getX() == Integer.MAX_VALUE) {
             return false;
         }
         return getBlockState(pos).getFluidState().is(FluidTags.WATER);

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightPlacementStateProcessor.java

@@ -1,26 +1,23 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R2;
 
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
-import com.fastasyncworldedit.core.util.ExtentTraverser;
-import com.fastasyncworldedit.core.wrappers.WorldWrapper;
-import com.sk89q.worldedit.EditSession;
-import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BlockTypeMask;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Direction;
-import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.Vec3;
-import org.bukkit.craftbukkit.v1_20_R2.CraftWorld;
 
 import javax.annotation.Nullable;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public class PaperweightPlacementStateProcessor extends PlacementStateProcessor {
 
@@ -28,33 +25,25 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
             .getInstance()
             .getBukkitImplAdapter());
     private final FaweMutableBlockPlaceContext mutableBlockPlaceContext;
+    private final PaperweightLevelProxy proxyLevel;
 
-    public PaperweightPlacementStateProcessor(
+    public PaperweightPlacementStateProcessor(Extent extent, BlockTypeMask mask, Region region) {
-            final Extent extent,
+        super(extent, mask, region);
-            final BlockTypeMask mask,
+        this.proxyLevel = PaperweightLevelProxy.getInstance(this);
-            final boolean includeUnedited
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
+    }
+
+    private PaperweightPlacementStateProcessor(
+            Extent extent,
+            BlockTypeMask mask,
+            Map<SecondPass, Character> crossChunkSecondPasses,
+            ThreadLocal<PlacementStateProcessor> threadProcessors,
+            Region region,
+            AtomicBoolean finished
     ) {
-        super(extent, mask, includeUnedited);
+        super(extent, mask, crossChunkSecondPasses, threadProcessors, region, finished);
-        World world;
+        this.proxyLevel = PaperweightLevelProxy.getInstance(this);
-        if (extent.isWorld()) {
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
-            world = (World) extent;
-        } else if (extent instanceof EditSession session) {
-            world = session.getWorld();
-        } else if ((world = new ExtentTraverser<>(extent).findAndGet(BukkitWorld.class)) == null) {
-            throw new UnsupportedOperationException("Cannot find world of extent.");
-        }
-        BukkitWorld bukkitWorld;
-        if (world instanceof WorldWrapper wrapper) {
-            bukkitWorld = (BukkitWorld) wrapper.getParent();
-        } else {
-            bukkitWorld = (BukkitWorld) world;
-        }
-        PaperweightLevelProxy proxyLevel = PaperweightLevelProxy.getInstance(
-                ((CraftWorld) bukkitWorld.getWorld()).getHandle(),
-                extent
-        );
-        mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
-        proxyLevel.setEnabled(true);
     }
 
     @Override
@@ -75,8 +64,8 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
                 new BlockHitResult(pos, side, blockPos, false),
                 side.getOpposite()
         ));
-        return newState == null ? BlockTypesCache.ReservedIDs.AIR :
+        return newState == null ? BlockTypesCache.ReservedIDs.AIR : adapter.ibdIDToOrdinal(Block.BLOCK_STATE_REGISTRY.getId(
-                adapter.ibdIDToOrdinal(Block.BLOCK_STATE_REGISTRY.getId(newState));
+                newState));
     }
 
     @Override
@@ -85,12 +74,12 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
         if (child == getExtent()) {
             return this;
         }
-        return new PaperweightPlacementStateProcessor(child, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(child, mask, region);
     }
 
     @Override
     public PlacementStateProcessor fork() {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(extent, mask, postCompleteSecondPasses, threadProcessors, region, finished);
     }
 
 }

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/ext.fawe/v1_20_R3/PaperweightAdapter.java

@@ -856,12 +856,12 @@ public final class PaperweightAdapter implements BukkitImplAdapter<net.minecraft
     }
 
     private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
-        SideEffect.NEIGHBORS,
+            //FAWE start - FAWE-supported side effects
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
             SideEffect.LIGHTING,
-        SideEffect.VALIDATION,
+            SideEffect.NEIGHBORS
-        SideEffect.ENTITY_AI,
+            //FAWE end
-        SideEffect.EVENTS,
-        SideEffect.UPDATE
     );
 
     @Override

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/FaweMutableBlockPlaceContext.java

@@ -16,7 +16,11 @@ import javax.annotation.Nullable;
 
 public class FaweMutableBlockPlaceContext extends BlockPlaceContext {
 
-    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(Vec3.ZERO, Direction.NORTH, BlockPos.ZERO, false);
+    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(new Vec3(
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE
+    ), Direction.NORTH, BlockPos.ZERO, false);
     private final ServerLevel level;
     private BlockHitResult hitResult = null;
     private Direction direction = null;

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightFaweAdapter.java

@@ -4,7 +4,7 @@ import com.fastasyncworldedit.bukkit.adapter.FaweAdapter;
 import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
@@ -14,6 +14,7 @@ import com.fastasyncworldedit.core.util.NbtUtils;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Sets;
 import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
@@ -34,7 +35,6 @@ import com.sk89q.worldedit.registry.state.IntegerProperty;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.util.SideEffect;
-import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.world.RegenOptions;
 import com.sk89q.worldedit.world.biome.BiomeType;
@@ -293,9 +293,16 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         return state.toBaseBlock();
     }
 
+    private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
+            SideEffect.LIGHTING,
+            SideEffect.NEIGHBORS
+    );
+
     @Override
     public Set<SideEffect> getSupportedSideEffects() {
-        return SideEffectSet.defaults().getSideEffectsToApply();
+        return SUPPORTED_SIDE_EFFECTS;
     }
 
     @Override
@@ -444,7 +451,7 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     public net.minecraft.world.level.block.state.BlockState adapt(BlockState blockState) {
-        return Block.stateById(ordinalToIbdID[blockState.getOrdinal()]);
+        return Block.stateById(getOrdinalToIbdID()[blockState.getOrdinal()]);
     }
 
     @Override
@@ -484,7 +491,7 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
 
     @Override
     public boolean canPlaceAt(org.bukkit.World world, BlockVector3 blockVector3, BlockState blockState) {
-        net.minecraft.world.level.block.state.BlockState blockState1 = Block.stateById(ordinalToIbdID[blockState.getOrdinal()]);
+        net.minecraft.world.level.block.state.BlockState blockState1 = Block.stateById(getOrdinalToIbdID()[blockState.getOrdinal()]);
         return blockState1.hasPostProcess(
                 getServerLevel(world),
                 new BlockPos(blockVector3.x(), blockVector3.y(), blockVector3.z())
@@ -615,8 +622,8 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     @Override
-    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, Region region) {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(extent, mask, region);
     }
 
     private boolean wasAccessibleSinceLastSave(ChunkHolder holder) {

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightGetBlocks.java

@@ -20,6 +20,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
@@ -834,7 +835,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         nmsChunk.mustNotSave = false;
                         nmsChunk.setUnsaved(true);
                         // send to player
-                        if (Settings.settings().LIGHTING.MODE == 0 || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
+                        if (!set
+                                .getSideEffectSet()
+                                .shouldApply(SideEffect.LIGHTING) || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
                             this.send();
                         }
                         if (finalizer != null) {

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightLevelProxy.java

@@ -2,12 +2,12 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3;
 
 import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.extent.Extent;
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.FluidTags;
 import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.material.FluidState;
@@ -20,17 +20,15 @@ import javax.annotation.Nullable;
 public class PaperweightLevelProxy extends ServerLevel {
 
     private PaperweightFaweAdapter adapter;
-    private Extent extent;
+    private PaperweightPlacementStateProcessor processor;
-    private ServerLevel serverLevel;
-    private boolean enabled = false;
 
     @SuppressWarnings("DataFlowIssue")
-    public PaperweightLevelProxy() {
+    private PaperweightLevelProxy() {
         super(null, null, null, null, null, null, null, true, 0L, null, true, null, null, null, null);
         throw new IllegalStateException("Cannot be instantiated");
     }
 
-    public static PaperweightLevelProxy getInstance(ServerLevel level, Extent extent) {
+    public static PaperweightLevelProxy getInstance(PaperweightPlacementStateProcessor processor) {
         Unsafe unsafe = ReflectionUtils.getUnsafe();
 
         PaperweightLevelProxy newLevel;
@@ -39,45 +37,41 @@ public class PaperweightLevelProxy extends ServerLevel {
         } catch (InstantiationException e) {
             throw new RuntimeException(e);
         }
-        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin
+        newLevel.processor = processor;
-                .getInstance()
+        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin.getInstance().getBukkitImplAdapter());
-                .getBukkitImplAdapter());
-        newLevel.extent = extent;
-        newLevel.serverLevel = level;
         return newLevel;
     }
 
-    public void setEnabled(boolean enabled) {
-        this.enabled = enabled;
-    }
-
     @Nullable
     @Override
     public BlockEntity getBlockEntity(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getY() == Integer.MAX_VALUE) {
             return null;
         }
-        BlockEntity tileEntity = this.serverLevel.getChunkAt(blockPos).getBlockEntity(blockPos);
+        com.sk89q.jnbt.CompoundTag tag = processor.getTileAt(blockPos.getX(), blockPos.getY(), blockPos.getZ());
-        if (tileEntity == null) {
+        if (tag == null) {
             return null;
         }
-        BlockEntity newEntity = tileEntity.getType().create(blockPos, getBlockState(blockPos));
+        BlockState state = adapter.adapt(processor.getBlockStateAt(blockPos.getX(), blockPos.getY(), blockPos.getZ()));
-        newEntity.load((CompoundTag) adapter.fromNativeLin(this.extent.getFullBlock(
+        if (!(state.getBlock() instanceof EntityBlock entityBlock)) {
-                blockPos.getX(),
+            return null;
-                blockPos.getY(),
+        }
-                blockPos.getZ()
+        BlockEntity tileEntity = entityBlock.newBlockEntity(blockPos, state);
-        ).getNbtReference().getValue()));
+        tileEntity.load((CompoundTag) adapter.fromNative(tag));
-
+        return tileEntity;
-        return newEntity;
     }
 
     @Override
     @Nonnull
     public BlockState getBlockState(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getY() == Integer.MAX_VALUE) {
             return Blocks.AIR.defaultBlockState();
         }
-        com.sk89q.worldedit.world.block.BlockState state = this.extent.getBlock(blockPos.getX(), blockPos.getY(), blockPos.getZ());
+        com.sk89q.worldedit.world.block.BlockState state = processor.getBlockStateAt(
+                blockPos.getX(),
+                blockPos.getY(),
+                blockPos.getZ()
+        );
         return adapter.adapt(state);
     }
 
@@ -85,7 +79,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @Override
     @Nonnull
     public FluidState getFluidState(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getY() == Integer.MAX_VALUE) {
             return Fluids.EMPTY.defaultFluidState();
         }
         return getBlockState(pos).getFluidState();
@@ -94,7 +88,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @SuppressWarnings("unused")
     @Override
     public boolean isWaterAt(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getY() == Integer.MAX_VALUE) {
             return false;
         }
         return getBlockState(pos).getFluidState().is(FluidTags.WATER);

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightPlacementStateProcessor.java

@@ -1,26 +1,23 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R3;
 
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
-import com.fastasyncworldedit.core.util.ExtentTraverser;
-import com.fastasyncworldedit.core.wrappers.WorldWrapper;
-import com.sk89q.worldedit.EditSession;
-import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BlockTypeMask;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Direction;
-import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.Vec3;
-import org.bukkit.craftbukkit.v1_20_R3.CraftWorld;
 
 import javax.annotation.Nullable;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public class PaperweightPlacementStateProcessor extends PlacementStateProcessor {
 
@@ -28,44 +25,30 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
             .getInstance()
             .getBukkitImplAdapter());
     private final FaweMutableBlockPlaceContext mutableBlockPlaceContext;
+    private final PaperweightLevelProxy proxyLevel;
 
-    public PaperweightPlacementStateProcessor(
+    public PaperweightPlacementStateProcessor(Extent extent, BlockTypeMask mask, Region region) {
-            final Extent extent,
+        super(extent, mask, region);
-            final BlockTypeMask mask,
+        this.proxyLevel = PaperweightLevelProxy.getInstance(this);
-            final boolean includeUnedited
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
+    }
+
+    private PaperweightPlacementStateProcessor(
+            Extent extent,
+            BlockTypeMask mask,
+            Map<SecondPass, Character> crossChunkSecondPasses,
+            ThreadLocal<PlacementStateProcessor> threadProcessors,
+            Region region,
+            AtomicBoolean finished
     ) {
-        super(extent, mask, includeUnedited);
+        super(extent, mask, crossChunkSecondPasses, threadProcessors, region, finished);
-        World world;
+        this.proxyLevel = PaperweightLevelProxy.getInstance(this);
-        if (extent.isWorld()) {
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
-            world = (World) extent;
-        } else if (extent instanceof EditSession session) {
-            world = session.getWorld();
-        } else if ((world = new ExtentTraverser<>(extent).findAndGet(BukkitWorld.class)) == null) {
-            throw new UnsupportedOperationException("Cannot find world of extent.");
-        }
-        BukkitWorld bukkitWorld;
-        if (world instanceof WorldWrapper wrapper) {
-            bukkitWorld = (BukkitWorld) wrapper.getParent();
-        } else {
-            bukkitWorld = (BukkitWorld) world;
-        }
-        PaperweightLevelProxy proxyLevel = PaperweightLevelProxy.getInstance(
-                ((CraftWorld) bukkitWorld.getWorld()).getHandle(),
-                extent
-        );
-        mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
-        proxyLevel.setEnabled(true);
     }
 
     @Override
     protected char getStateAtFor(
-            int x,
+            int x, int y, int z, BlockState state, Vector3 clickPos, Direction clickedFaceDirection, BlockVector3 clickedBlock
-            int y,
-            int z,
-            BlockState state,
-            Vector3 clickPos,
-            Direction clickedFaceDirection,
-            BlockVector3 clickedBlock
     ) {
         Block block = ((PaperweightBlockMaterial) state.getMaterial()).getBlock();
         Vec3 pos = new Vec3(clickPos.x(), clickPos.y(), clickPos.z());
@@ -75,8 +58,8 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
                 new BlockHitResult(pos, side, blockPos, false),
                 side.getOpposite()
         ));
-        return newState == null ? BlockTypesCache.ReservedIDs.AIR :
+        return newState == null ? BlockTypesCache.ReservedIDs.AIR : adapter.ibdIDToOrdinal(Block.BLOCK_STATE_REGISTRY.getId(
-                adapter.ibdIDToOrdinal(Block.BLOCK_STATE_REGISTRY.getId(newState));
+                newState));
     }
 
     @Override
@@ -85,12 +68,12 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
         if (child == getExtent()) {
             return this;
         }
-        return new PaperweightPlacementStateProcessor(child, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(child, mask, region);
     }
 
     @Override
     public PlacementStateProcessor fork() {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(extent, mask, postCompleteSecondPasses, threadProcessors, region, finished);
     }
 
 }

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/ext.fawe/v1_20_R4/PaperweightAdapter.java

@@ -880,12 +880,12 @@ public final class PaperweightAdapter implements BukkitImplAdapter<net.minecraft
     }
 
     private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
-        SideEffect.NEIGHBORS,
+            //FAWE start - FAWE-supported side effects
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
             SideEffect.LIGHTING,
-        SideEffect.VALIDATION,
+            SideEffect.NEIGHBORS
-        SideEffect.ENTITY_AI,
+            //FAWE end
-        SideEffect.EVENTS,
-        SideEffect.UPDATE
     );
 
     @Override

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/FaweMutableBlockPlaceContext.java

@@ -16,7 +16,11 @@ import javax.annotation.Nullable;
 
 public class FaweMutableBlockPlaceContext extends BlockPlaceContext {
 
-    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(Vec3.ZERO, Direction.NORTH, BlockPos.ZERO, false);
+    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(new Vec3(
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE
+    ), Direction.NORTH, BlockPos.ZERO, false);
     private final ServerLevel level;
     private BlockHitResult hitResult = null;
     private Direction direction = null;

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightFaweAdapter.java

@@ -4,7 +4,7 @@ import com.fastasyncworldedit.bukkit.adapter.FaweAdapter;
 import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
@@ -14,6 +14,7 @@ import com.fastasyncworldedit.core.util.NbtUtils;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Sets;
 import com.mojang.serialization.Codec;
 import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.blocks.BaseItemStack;
@@ -36,7 +37,6 @@ import com.sk89q.worldedit.registry.state.IntegerProperty;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.util.SideEffect;
-import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.concurrency.LazyReference;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.world.RegenOptions;
@@ -303,9 +303,16 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         return state.toBaseBlock();
     }
 
+    private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
+            SideEffect.LIGHTING,
+            SideEffect.NEIGHBORS
+    );
+
     @Override
     public Set<SideEffect> getSupportedSideEffects() {
-        return SideEffectSet.defaults().getSideEffectsToApply();
+        return SUPPORTED_SIDE_EFFECTS;
     }
 
     @Override
@@ -454,7 +461,7 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     public net.minecraft.world.level.block.state.BlockState adapt(BlockState blockState) {
-        return Block.stateById(ordinalToIbdID[blockState.getOrdinal()]);
+        return Block.stateById(getOrdinalToIbdID()[blockState.getOrdinal()]);
     }
 
     @Override
@@ -639,8 +646,8 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     @Override
-    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, Region region) {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(extent, mask, region);
     }
 
     private boolean wasAccessibleSinceLastSave(ChunkHolder holder) {

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightGetBlocks.java

@@ -20,6 +20,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
@@ -833,7 +834,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         nmsChunk.mustNotSave = false;
                         nmsChunk.setUnsaved(true);
                         // send to player
-                        if (Settings.settings().LIGHTING.MODE == 0 || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
+                        if (!set
+                                .getSideEffectSet()
+                                .shouldApply(SideEffect.LIGHTING) || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
                             this.send();
                         }
                         if (finalizer != null) {

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightLevelProxy.java

@@ -2,12 +2,12 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4;
 
 import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.extent.Extent;
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.FluidTags;
 import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.material.FluidState;
@@ -19,18 +19,17 @@ import javax.annotation.Nullable;
 
 public class PaperweightLevelProxy extends ServerLevel {
 
+    protected ServerLevel serverLevel;
+    private PaperweightPlacementStateProcessor processor;
     private PaperweightFaweAdapter adapter;
-    private Extent extent;
-    private ServerLevel serverLevel;
-    private boolean enabled = false;
 
     @SuppressWarnings("DataFlowIssue")
-    public PaperweightLevelProxy() {
+    private PaperweightLevelProxy() {
         super(null, null, null, null, null, null, null, true, 0L, null, true, null, null, null, null);
         throw new IllegalStateException("Cannot be instantiated");
     }
 
-    public static PaperweightLevelProxy getInstance(ServerLevel level, Extent extent) {
+    public static PaperweightLevelProxy getInstance(ServerLevel serverLevel, PaperweightPlacementStateProcessor processor) {
         Unsafe unsafe = ReflectionUtils.getUnsafe();
 
         PaperweightLevelProxy newLevel;
@@ -39,48 +38,38 @@ public class PaperweightLevelProxy extends ServerLevel {
         } catch (InstantiationException e) {
             throw new RuntimeException(e);
         }
-        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin
+        newLevel.processor = processor;
-                .getInstance()
+        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin.getInstance().getBukkitImplAdapter());
-                .getBukkitImplAdapter());
+        newLevel.serverLevel = serverLevel;
-        newLevel.extent = extent;
-        newLevel.serverLevel = level;
         return newLevel;
     }
 
-    public void setEnabled(boolean enabled) {
-        this.enabled = enabled;
-    }
-
     @Nullable
     @Override
     public BlockEntity getBlockEntity(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getX() == Integer.MAX_VALUE) {
             return null;
         }
-        BlockEntity tileEntity = this.serverLevel.getChunkAt(blockPos).getBlockEntity(blockPos);
+        com.sk89q.jnbt.CompoundTag tag = processor.getTileAt(blockPos.getX(), blockPos.getY(), blockPos.getZ());
-        if (tileEntity == null) {
+        if (tag == null) {
             return null;
         }
-        BlockEntity newEntity = tileEntity.getType().create(blockPos, getBlockState(blockPos));
+        BlockState state = adapter.adapt(processor.getBlockStateAt(blockPos.getX(), blockPos.getY(), blockPos.getZ()));
-        newEntity.loadWithComponents(
+        if (!(state.getBlock() instanceof EntityBlock entityBlock)) {
-                (CompoundTag) adapter.fromNativeLin(this.extent.getFullBlock(
+            return null;
-                        blockPos.getX(),
+        }
-                        blockPos.getY(),
+        BlockEntity tileEntity = entityBlock.newBlockEntity(blockPos, state);
-                        blockPos.getZ()
+        tileEntity.loadWithComponents((CompoundTag) adapter.fromNative(tag), serverLevel.registryAccess());
-                ).getNbtReference().getValue()),
+        return tileEntity;
-                this.serverLevel.registryAccess()
-        );
-
-        return newEntity;
     }
 
     @Override
     @Nonnull
     public BlockState getBlockState(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getX() == Integer.MAX_VALUE) {
             return Blocks.AIR.defaultBlockState();
         }
-        com.sk89q.worldedit.world.block.BlockState state = this.extent.getBlock(
+        com.sk89q.worldedit.world.block.BlockState state = processor.getBlockStateAt(
                 blockPos.getX(),
                 blockPos.getY(),
                 blockPos.getZ()
@@ -92,7 +81,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @Override
     @Nonnull
     public FluidState getFluidState(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getX() == Integer.MAX_VALUE) {
             return Fluids.EMPTY.defaultFluidState();
         }
         return getBlockState(pos).getFluidState();
@@ -101,7 +90,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @SuppressWarnings("unused")
     @Override
     public boolean isWaterAt(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getX() == Integer.MAX_VALUE) {
             return false;
         }
         return getBlockState(pos).getFluidState().is(FluidTags.WATER);

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightPlacementStateProcessor.java

@@ -1,47 +1,44 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_20_R4;
 
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.util.ExtentTraverser;
 import com.fastasyncworldedit.core.wrappers.WorldWrapper;
-import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BlockTypeMask;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import net.minecraft.core.BlockPos;
+import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.Vec3;
 import org.bukkit.craftbukkit.CraftWorld;
 
 import javax.annotation.Nullable;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public class PaperweightPlacementStateProcessor extends PlacementStateProcessor {
 
     private final PaperweightFaweAdapter adapter = ((PaperweightFaweAdapter) WorldEditPlugin
             .getInstance()
             .getBukkitImplAdapter());
+    private final PaperweightLevelProxy proxyLevel;
     private final FaweMutableBlockPlaceContext mutableBlockPlaceContext;
 
-    public PaperweightPlacementStateProcessor(
+    public PaperweightPlacementStateProcessor(Extent extent, BlockTypeMask mask, Region region) {
-            final Extent extent,
+        super(extent, mask, region);
-            final BlockTypeMask mask,
+        World world = ExtentTraverser.getWorldFromExtent(extent);
-            final boolean includeUnedited
+        if (world == null) {
-    ) {
+            throw new UnsupportedOperationException(
-        super(extent, mask, includeUnedited);
+                    "World is required for PlacementStateProcessor but none found in given extent.");
-        World world;
-        if (extent.isWorld()) {
-            world = (World) extent;
-        } else if (extent instanceof EditSession session) {
-            world = session.getWorld();
-        } else if ((world = new ExtentTraverser<>(extent).findAndGet(BukkitWorld.class)) == null) {
-            throw new UnsupportedOperationException("Cannot find world of extent.");
         }
         BukkitWorld bukkitWorld;
         if (world instanceof WorldWrapper wrapper) {
@@ -49,12 +46,22 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
         } else {
             bukkitWorld = (BukkitWorld) world;
         }
-        PaperweightLevelProxy proxyLevel = PaperweightLevelProxy.getInstance(
+        this.proxyLevel = PaperweightLevelProxy.getInstance(((CraftWorld) bukkitWorld.getWorld()).getHandle(), this);
-                ((CraftWorld) bukkitWorld.getWorld()).getHandle(),
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
-                extent
+    }
-        );
+
-        mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
+    private PaperweightPlacementStateProcessor(
-        proxyLevel.setEnabled(true);
+            Extent extent,
+            BlockTypeMask mask,
+            Map<SecondPass, Character> crossChunkSecondPasses,
+            ServerLevel serverLevel,
+            ThreadLocal<PlacementStateProcessor> threadProcessors,
+            Region region,
+            AtomicBoolean finished
+    ) {
+        super(extent, mask, crossChunkSecondPasses, threadProcessors, region, finished);
+        this.proxyLevel = PaperweightLevelProxy.getInstance(serverLevel, this);
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
     }
 
     @Override
@@ -75,8 +82,8 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
                 new BlockHitResult(pos, side, blockPos, false),
                 side.getOpposite()
         ));
-        return newState == null ? BlockTypesCache.ReservedIDs.AIR :
+        return newState == null ? BlockTypesCache.ReservedIDs.AIR : adapter.ibdIDToOrdinal(Block.BLOCK_STATE_REGISTRY.getId(
-                adapter.ibdIDToOrdinal(Block.BLOCK_STATE_REGISTRY.getId(newState));
+                newState));
     }
 
     @Override
@@ -85,12 +92,20 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
         if (child == getExtent()) {
             return this;
         }
-        return new PaperweightPlacementStateProcessor(child, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(child, mask, region);
     }
 
     @Override
     public PlacementStateProcessor fork() {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(
+                extent,
+                mask,
+                postCompleteSecondPasses,
+                proxyLevel.serverLevel,
+                threadProcessors,
+                region,
+                finished
+        );
     }
 
 }

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/ext/fawe/v1_21_R1/PaperweightAdapter.java

@@ -886,12 +886,12 @@ public final class PaperweightAdapter implements BukkitImplAdapter<net.minecraft
     }
 
     private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
-        SideEffect.NEIGHBORS,
+            //FAWE start - FAWE-supported side effects
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
             SideEffect.LIGHTING,
-        SideEffect.VALIDATION,
+            SideEffect.NEIGHBORS
-        SideEffect.ENTITY_AI,
+            //FAWE end
-        SideEffect.EVENTS,
-        SideEffect.UPDATE
     );
 
     @Override

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/FaweMutableBlockPlaceContext.java

@@ -16,7 +16,11 @@ import javax.annotation.Nullable;
 
 public class FaweMutableBlockPlaceContext extends BlockPlaceContext {
 
-    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(Vec3.ZERO, Direction.NORTH, BlockPos.ZERO, false);
+    private static final BlockHitResult DEFAULT_BLOCK_HIT = new BlockHitResult(new Vec3(
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE,
+            Integer.MAX_VALUE
+    ), Direction.NORTH, BlockPos.ZERO, false);
     private final ServerLevel level;
     private BlockHitResult hitResult = null;
     private Direction direction = null;

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightFaweAdapter.java

@@ -4,7 +4,7 @@ import com.fastasyncworldedit.bukkit.adapter.FaweAdapter;
 import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.FaweCache;
 import com.fastasyncworldedit.core.entity.LazyBaseEntity;
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
@@ -14,6 +14,7 @@ import com.fastasyncworldedit.core.util.NbtUtils;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Sets;
 import com.mojang.serialization.Codec;
 import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.blocks.BaseItemStack;
@@ -36,7 +37,6 @@ import com.sk89q.worldedit.registry.state.IntegerProperty;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.util.SideEffect;
-import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.concurrency.LazyReference;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.world.RegenOptions;
@@ -303,9 +303,16 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
         return state.toBaseBlock();
     }
 
+    private static final Set<SideEffect> SUPPORTED_SIDE_EFFECTS = Sets.immutableEnumSet(
+            SideEffect.HISTORY,
+            SideEffect.HEIGHTMAPS,
+            SideEffect.LIGHTING,
+            SideEffect.NEIGHBORS
+    );
+
     @Override
     public Set<SideEffect> getSupportedSideEffects() {
-        return SideEffectSet.defaults().getSideEffectsToApply();
+        return SUPPORTED_SIDE_EFFECTS;
     }
 
     @Override
@@ -454,7 +461,7 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     public net.minecraft.world.level.block.state.BlockState adapt(BlockState blockState) {
-        return Block.stateById(ordinalToIbdID[blockState.getOrdinal()]);
+        return Block.stateById(getOrdinalToIbdID()[blockState.getOrdinal()]);
     }
 
     @Override
@@ -639,8 +646,8 @@ public final class PaperweightFaweAdapter extends FaweAdapter<net.minecraft.nbt.
     }
 
     @Override
-    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, Region region ) {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(extent, mask, region);
     }
 
     private boolean wasAccessibleSinceLastSave(ChunkHolder holder) {

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightGetBlocks.java

@@ -20,6 +20,7 @@ import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.internal.Constants;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
@@ -828,7 +829,9 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
                         nmsChunk.mustNotSave = false;
                         nmsChunk.setUnsaved(true);
                         // send to player
-                        if (Settings.settings().LIGHTING.MODE == 0 || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
+                        if (!set
+                                .getSideEffectSet()
+                                .shouldApply(SideEffect.LIGHTING) || !Settings.settings().LIGHTING.DELAY_PACKET_SENDING || finalMask == 0 && biomes != null) {
                             this.send();
                         }
                         if (finalizer != null) {

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightLevelProxy.java

@@ -2,12 +2,12 @@ package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1;
 
 import com.fastasyncworldedit.core.util.ReflectionUtils;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
-import com.sk89q.worldedit.extent.Extent;
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.FluidTags;
 import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.material.FluidState;
@@ -19,18 +19,17 @@ import javax.annotation.Nullable;
 
 public class PaperweightLevelProxy extends ServerLevel {
 
+    protected ServerLevel serverLevel;
     private PaperweightFaweAdapter adapter;
-    private Extent extent;
+    private PaperweightPlacementStateProcessor processor;
-    private ServerLevel serverLevel;
-    private boolean enabled = false;
 
     @SuppressWarnings("DataFlowIssue")
-    public PaperweightLevelProxy() {
+    private PaperweightLevelProxy() {
         super(null, null, null, null, null, null, null, true, 0L, null, true, null, null, null, null);
         throw new IllegalStateException("Cannot be instantiated");
     }
 
-    public static PaperweightLevelProxy getInstance(ServerLevel level, Extent extent) {
+    public static PaperweightLevelProxy getInstance(ServerLevel serverLevel, PaperweightPlacementStateProcessor processor) {
         Unsafe unsafe = ReflectionUtils.getUnsafe();
 
         PaperweightLevelProxy newLevel;
@@ -39,48 +38,38 @@ public class PaperweightLevelProxy extends ServerLevel {
         } catch (InstantiationException e) {
             throw new RuntimeException(e);
         }
-        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin
+        newLevel.processor = processor;
-                .getInstance()
+        newLevel.adapter = ((PaperweightFaweAdapter) WorldEditPlugin.getInstance().getBukkitImplAdapter());
-                .getBukkitImplAdapter());
+        newLevel.serverLevel = serverLevel;
-        newLevel.extent = extent;
-        newLevel.serverLevel = level;
         return newLevel;
     }
 
-    public void setEnabled(boolean enabled) {
-        this.enabled = enabled;
-    }
-
     @Nullable
     @Override
     public BlockEntity getBlockEntity(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getX() == Integer.MAX_VALUE) {
             return null;
         }
-        BlockEntity tileEntity = this.serverLevel.getChunkAt(blockPos).getBlockEntity(blockPos);
+        com.sk89q.jnbt.CompoundTag tag = processor.getTileAt(blockPos.getX(), blockPos.getY(), blockPos.getZ());
-        if (tileEntity == null) {
+        if (tag == null) {
             return null;
         }
-        BlockEntity newEntity = tileEntity.getType().create(blockPos, getBlockState(blockPos));
+        BlockState state = adapter.adapt(processor.getBlockStateAt(blockPos.getX(), blockPos.getY(), blockPos.getZ()));
-        newEntity.loadWithComponents(
+        if (!(state.getBlock() instanceof EntityBlock entityBlock)) {
-                (CompoundTag) adapter.fromNativeLin(this.extent.getFullBlock(
+            return null;
-                        blockPos.getX(),
+        }
-                        blockPos.getY(),
+        BlockEntity tileEntity = entityBlock.newBlockEntity(blockPos, state);
-                        blockPos.getZ()
+        tileEntity.loadWithComponents((CompoundTag) adapter.fromNative(tag), serverLevel.registryAccess());
-                ).getNbtReference().getValue()),
+        return tileEntity;
-                this.serverLevel.registryAccess()
-        );
-
-        return newEntity;
     }
 
     @Override
     @Nonnull
     public BlockState getBlockState(@Nonnull BlockPos blockPos) {
-        if (!enabled) {
+        if (blockPos.getX() == Integer.MAX_VALUE) {
             return Blocks.AIR.defaultBlockState();
         }
-        com.sk89q.worldedit.world.block.BlockState state = this.extent.getBlock(
+        com.sk89q.worldedit.world.block.BlockState state = processor.getBlockStateAt(
                 blockPos.getX(),
                 blockPos.getY(),
                 blockPos.getZ()
@@ -92,7 +81,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @Override
     @Nonnull
     public FluidState getFluidState(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getX() == Integer.MAX_VALUE) {
             return Fluids.EMPTY.defaultFluidState();
         }
         return getBlockState(pos).getFluidState();
@@ -101,7 +90,7 @@ public class PaperweightLevelProxy extends ServerLevel {
     @SuppressWarnings("unused")
     @Override
     public boolean isWaterAt(@Nonnull BlockPos pos) {
-        if (!enabled) {
+        if (pos.getX() == Integer.MAX_VALUE) {
             return false;
         }
         return getBlockState(pos).getFluidState().is(FluidTags.WATER);

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightPlacementStateProcessor.java

@@ -1,26 +1,29 @@
 package com.sk89q.worldedit.bukkit.adapter.impl.fawe.v1_21_R1;
 
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.util.ExtentTraverser;
 import com.fastasyncworldedit.core.wrappers.WorldWrapper;
-import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.bukkit.WorldEditPlugin;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BlockTypeMask;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Direction;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import net.minecraft.core.BlockPos;
+import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.Vec3;
 import org.bukkit.craftbukkit.CraftWorld;
 
 import javax.annotation.Nullable;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public class PaperweightPlacementStateProcessor extends PlacementStateProcessor {
 
@@ -28,20 +31,14 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
             .getInstance()
             .getBukkitImplAdapter());
     private final FaweMutableBlockPlaceContext mutableBlockPlaceContext;
+    private final PaperweightLevelProxy proxyLevel;
 
-    public PaperweightPlacementStateProcessor(
+    public PaperweightPlacementStateProcessor(Extent extent, BlockTypeMask mask, Region region) {
-            final Extent extent,
+        super(extent, mask, region);
-            final BlockTypeMask mask,
+        World world = ExtentTraverser.getWorldFromExtent(extent);
-            final boolean includeUnedited
+        if (world == null) {
-    ) {
+            throw new UnsupportedOperationException(
-        super(extent, mask, includeUnedited);
+                    "World is required for PlacementStateProcessor but none found in given extent.");
-        World world;
-        if (extent.isWorld()) {
-            world = (World) extent;
-        } else if (extent instanceof EditSession session) {
-            world = session.getWorld();
-        } else if ((world = new ExtentTraverser<>(extent).findAndGet(BukkitWorld.class)) == null) {
-            throw new UnsupportedOperationException("Cannot find world of extent.");
         }
         BukkitWorld bukkitWorld;
         if (world instanceof WorldWrapper wrapper) {
@@ -49,12 +46,22 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
         } else {
             bukkitWorld = (BukkitWorld) world;
         }
-        PaperweightLevelProxy proxyLevel = PaperweightLevelProxy.getInstance(
+        this.proxyLevel = PaperweightLevelProxy.getInstance(((CraftWorld) bukkitWorld.getWorld()).getHandle(), this);
-                ((CraftWorld) bukkitWorld.getWorld()).getHandle(),
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
-                extent
+    }
-        );
+
-        mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
+    private PaperweightPlacementStateProcessor(
-        proxyLevel.setEnabled(true);
+            Extent extent,
+            BlockTypeMask mask,
+            Map<SecondPass, Character> crossChunkSecondPasses,
+            ServerLevel serverLevel,
+            ThreadLocal<PlacementStateProcessor> threadProcessors,
+            Region region,
+            AtomicBoolean finished
+    ) {
+        super(extent, mask, crossChunkSecondPasses, threadProcessors, region, finished);
+        this.proxyLevel = PaperweightLevelProxy.getInstance(serverLevel, this);
+        this.mutableBlockPlaceContext = new FaweMutableBlockPlaceContext(proxyLevel);
     }
 
     @Override
@@ -85,12 +92,20 @@ public class PaperweightPlacementStateProcessor extends PlacementStateProcessor
         if (child == getExtent()) {
             return this;
         }
-        return new PaperweightPlacementStateProcessor(child, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(child, mask, region);
     }
 
     @Override
     public PlacementStateProcessor fork() {
-        return new PaperweightPlacementStateProcessor(extent, mask, includeUnedited);
+        return new PaperweightPlacementStateProcessor(
+                extent,
+                mask,
+                postCompleteSecondPasses,
+                proxyLevel.serverLevel,
+                threadProcessors,
+                region,
+                finished
+        );
     }
 
 }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitServerInterface.java

@@ -21,7 +21,7 @@ package com.sk89q.worldedit.bukkit;
 
 import com.fastasyncworldedit.bukkit.util.MinecraftVersion;
 import com.fastasyncworldedit.core.configuration.Settings;
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.google.common.collect.Sets;
@@ -41,6 +41,7 @@ import com.sk89q.worldedit.extension.platform.Watchdog;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BlockTypeMask;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.util.lifecycle.Lifecycled;
 import com.sk89q.worldedit.world.DataFixer;
@@ -314,8 +315,8 @@ public class BukkitServerInterface extends AbstractPlatform implements MultiUser
     }
 
     @Override
-    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    public PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, Region region) {
-        return this.plugin.getBukkitImplAdapter().getPlatformPlacementProcessor(extent, mask, includeUnedited);
+        return this.plugin.getBukkitImplAdapter().getPlatformPlacementProcessor(extent, mask, region);
     }
     //FAWE end
 }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplAdapter.java

@@ -23,7 +23,7 @@ import com.fastasyncworldedit.bukkit.FaweBukkit;
 import com.fastasyncworldedit.bukkit.adapter.IBukkitAdapter;
 import com.fastasyncworldedit.bukkit.adapter.NMSRelighterFactory;
 import com.fastasyncworldedit.core.Fawe;
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.fastasyncworldedit.core.queue.IChunkGet;
@@ -409,7 +409,7 @@ public interface BukkitImplAdapter<T> extends IBukkitAdapter {
      * Returns an {@link PlacementStateProcessor} instance for processing placed blocks to "fix" them.
      * @since TODO
      */
-    default PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    default PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, Region region) {
         return null;
     }
     //FAWE end

worldedit-core/src/main/java/com/fastasyncworldedit/core/FaweAPI.java

@@ -32,6 +32,8 @@ import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
+import com.sk89q.worldedit.util.SideEffect;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.world.World;
 import org.apache.logging.log4j.Logger;
@@ -355,8 +357,12 @@ public class FaweAPI {
             if (unwrapped instanceof IQueueExtent) {
                 queue = (IQueueExtent) unwrapped;
             } else if (Settings.settings().QUEUE.PARALLEL_THREADS > 1) {
-                ParallelQueueExtent parallel =
+                ParallelQueueExtent parallel = new ParallelQueueExtent(
-                        new ParallelQueueExtent(Fawe.instance().getQueueHandler(), world, true);
+                        Fawe.instance().getQueueHandler(),
+                        world,
+                        true,
+                        SideEffectSet.none().with(SideEffect.LIGHTING, SideEffect.State.ON)
+                );
                 queue = parallel.getExtent();
             } else {
                 queue = Fawe.instance().getQueueHandler().getQueue(world);

worldedit-core/src/main/java/com/fastasyncworldedit/core/extension/factory/parser/mask/Adjacent2DMaskParser.java

@@ -0,0 +1,51 @@
+package com.fastasyncworldedit.core.extension.factory.parser.mask;
+
+import com.fastasyncworldedit.core.extension.factory.parser.RichParser;
+import com.fastasyncworldedit.core.function.mask.Adjacent2DMask;
+import com.fastasyncworldedit.core.function.mask.AdjacentAny2DMask;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.command.util.SuggestionHelper;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.Mask;
+
+import javax.annotation.Nonnull;
+import java.util.stream.Stream;
+
+public class Adjacent2DMaskParser extends RichParser<Mask> {
+
+    public Adjacent2DMaskParser(WorldEdit worldEdit) {
+        super(worldEdit, "~2d", "adjacent2d");
+    }
+
+    @Override
+    protected Stream<String> getSuggestions(String argumentInput, int index) {
+        if (index == 0) {
+            return worldEdit.getMaskFactory().getSuggestions(argumentInput).stream();
+        } else if (index == 1 || index == 2) {
+            return SuggestionHelper.suggestPositiveDoubles(argumentInput);
+        }
+        return Stream.empty();
+    }
+
+    @Override
+    protected Mask parseFromInput(@Nonnull String[] arguments, ParserContext context) throws InputParseException {
+        if (arguments.length == 0) {
+            return null;
+        }
+        Mask subMask = worldEdit.getMaskFactory().parseFromInput(arguments[0], context);
+        int min = arguments.length > 1 ? Integer.parseInt(arguments[1]) : -1;
+        int max = arguments.length > 2 ? Integer.parseInt(arguments[2]) : -1;
+        if (min == -1 && max == -1) {
+            min = 1;
+            max = 4;
+        } else if (max == -1) {
+            max = min;
+        }
+        if (max >= 4 && min == 1) {
+            return new AdjacentAny2DMask(subMask);
+        }
+        return new Adjacent2DMask(subMask, min, max);
+    }
+
+}

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/PassthroughExtent.java

@@ -10,7 +10,6 @@ import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.mask.Mask;
-import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
@@ -215,12 +214,6 @@ public class PassthroughExtent extends AbstractDelegateExtent {
         return getExtent().setBiome(position, biome);
     }
 
-    @Override
-    @Nullable
-    public Operation commit() {
-        return getExtent().commit();
-    }
-
     @Override
     public boolean cancel() {
         return getExtent().cancel();

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/PlacementStateProcessor.java

@@ -0,0 +1,462 @@
+package com.fastasyncworldedit.core.extent;
+
+import com.fastasyncworldedit.core.extent.filter.block.FilterBlock;
+import com.fastasyncworldedit.core.extent.processor.ProcessorScope;
+import com.fastasyncworldedit.core.function.mask.AdjacentAny2DMask;
+import com.fastasyncworldedit.core.math.BlockVector3ChunkMap;
+import com.fastasyncworldedit.core.math.MutableBlockVector3;
+import com.fastasyncworldedit.core.math.MutableVector3;
+import com.fastasyncworldedit.core.queue.IBatchProcessor;
+import com.fastasyncworldedit.core.queue.IChunk;
+import com.fastasyncworldedit.core.queue.IChunkGet;
+import com.fastasyncworldedit.core.queue.IChunkSet;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.extent.AbstractDelegateExtent;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.extent.NullExtent;
+import com.sk89q.worldedit.function.mask.BlockTypeMask;
+import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.registry.state.Property;
+import com.sk89q.worldedit.util.Direction;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.BlockCategories;
+import com.sk89q.worldedit.world.block.BlockCategory;
+import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockTypes;
+import com.sk89q.worldedit.world.block.BlockTypesCache;
+import org.enginehub.linbus.tree.LinCompoundTag;
+
+import java.util.EnumSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.stream.Collectors;
+
+public abstract class PlacementStateProcessor extends AbstractDelegateExtent implements IBatchProcessor, Pattern {
+
+    private static final Direction[] NESW = new Direction[]{Direction.NORTH, Direction.EAST, Direction.SOUTH, Direction.WEST};
+    private static final int CHUNK_BLOCK_POS_MASK = -1 << 4;
+
+    private static volatile boolean SETUP = false;
+    private static BlockTypeMask DEFAULT_MASK = null;
+    private static BlockTypeMask REQUIRES_SECOND_PASS = null;
+    private static AdjacentAny2DMask ADJACENT_STAIR_MASK = null;
+
+    protected final Extent extent;
+    protected final BlockTypeMask mask;
+    protected final Region region;
+    protected final Map<SecondPass, Character> postCompleteSecondPasses;
+    protected final ThreadLocal<PlacementStateProcessor> threadProcessors;
+    protected final AtomicBoolean finished;
+    private final MutableVector3 clickPos = new MutableVector3();
+    private final MutableBlockVector3 clickedBlock = new MutableBlockVector3();
+
+    private IChunkGet processChunkGet = null;
+    private IChunkSet processChunkSet = null;
+    private int processChunkX;
+    private int processChunkZ;
+
+    /**
+     * Process/extent/pattern for performing block updates, e.g. stair shape and glass pane connections
+     *
+     * @param extent Extent to use
+     * @param mask   Mask of blocks to perform updates on
+     * @since TODO
+     */
+    public PlacementStateProcessor(Extent extent, BlockTypeMask mask, Region region) {
+        super(extent);
+        // Required here as child classes are located within adapters and will therefore be statically accessed on startup,
+        // meaning we attempt to access BlockTypes class before it is correctly initialised.
+        if (!SETUP) {
+            synchronized (PlacementStateProcessor.class) {
+                if (!SETUP) {
+                    setup();
+                }
+            }
+        }
+        this.extent = extent;
+        this.mask = mask == null ? DEFAULT_MASK : mask;
+        this.region = region;
+        this.postCompleteSecondPasses = new ConcurrentHashMap<>();
+        this.threadProcessors = ThreadLocal.withInitial(this::fork);
+        this.finished = new AtomicBoolean();
+    }
+
+    protected PlacementStateProcessor(
+            Extent extent,
+            BlockTypeMask mask,
+            Map<SecondPass, Character> crossChunkSecondPasses,
+            ThreadLocal<PlacementStateProcessor> threadProcessors,
+            Region region,
+            AtomicBoolean finished
+    ) {
+        super(extent);
+        this.extent = extent;
+        this.mask = mask;
+        this.region = region;
+        this.postCompleteSecondPasses = crossChunkSecondPasses;
+        this.threadProcessors = threadProcessors;
+        this.finished = finished;
+    }
+
+    private static void setup() {
+        REQUIRES_SECOND_PASS = new BlockTypeMask(new NullExtent());
+        REQUIRES_SECOND_PASS.add(
+                BlockTypes.IRON_BARS,
+                BlockTypes.GLASS_PANE,
+                BlockTypes.BLACK_STAINED_GLASS_PANE,
+                BlockTypes.BLUE_STAINED_GLASS_PANE,
+                BlockTypes.BROWN_STAINED_GLASS_PANE,
+                BlockTypes.LIGHT_BLUE_STAINED_GLASS_PANE,
+                BlockTypes.PINK_STAINED_GLASS_PANE,
+                BlockTypes.LIGHT_GRAY_STAINED_GLASS_PANE,
+                BlockTypes.GRAY_STAINED_GLASS_PANE,
+                BlockTypes.CYAN_STAINED_GLASS_PANE,
+                BlockTypes.PURPLE_STAINED_GLASS_PANE,
+                BlockTypes.GREEN_STAINED_GLASS_PANE,
+                BlockTypes.LIME_STAINED_GLASS_PANE,
+                BlockTypes.MAGENTA_STAINED_GLASS_PANE,
+                BlockTypes.YELLOW_STAINED_GLASS_PANE,
+                BlockTypes.ORANGE_STAINED_GLASS_PANE,
+                BlockTypes.RED_STAINED_GLASS_PANE,
+                BlockTypes.WHITE_STAINED_GLASS_PANE,
+                BlockTypes.TRIPWIRE,
+                BlockTypes.TWISTING_VINES_PLANT,
+                BlockTypes.CAVE_VINES_PLANT,
+                BlockTypes.WEEPING_VINES_PLANT,
+                BlockTypes.VINE,
+                BlockTypes.REDSTONE_WIRE
+        );
+        BlockCategory[] categories = new BlockCategory[]{BlockCategories.FENCES, BlockCategories.FENCE_GATES, BlockCategories.WALLS, BlockCategories.CAVE_VINES};
+        for (BlockCategory category : categories) {
+            if (category != null) {
+                REQUIRES_SECOND_PASS.add(category.getAll());
+            }
+        }
+
+        DEFAULT_MASK = REQUIRES_SECOND_PASS.copy();
+        DEFAULT_MASK.add(
+                BlockTypes.CHORUS_PLANT,
+                BlockTypes.DRIPSTONE_BLOCK,
+                BlockTypes.POINTED_DRIPSTONE,
+                BlockTypes.BIG_DRIPLEAF,
+                BlockTypes.BIG_DRIPLEAF_STEM,
+                BlockTypes.CAMPFIRE,
+                BlockTypes.CHEST,
+                BlockTypes.TRAPPED_CHEST,
+                BlockTypes.CRAFTER,
+                BlockTypes.MUSHROOM_STEM,
+                BlockTypes.BROWN_MUSHROOM_BLOCK,
+                BlockTypes.RED_MUSHROOM_BLOCK
+        );
+        categories = new BlockCategory[]{BlockCategories.STAIRS, BlockCategories.BAMBOO_BLOCKS, BlockCategories.TALL_FLOWERS};
+        for (BlockCategory category : categories) {
+            if (category != null) {
+                DEFAULT_MASK.add(category.getAll());
+            }
+        }
+        BlockTypeMask stairs = new BlockTypeMask(new NullExtent(), BlockCategories.STAIRS.getAll());
+        ADJACENT_STAIR_MASK = new AdjacentAny2DMask(stairs, false);
+        SETUP = true;
+    }
+
+    @Override
+    public IChunkSet processSet(IChunk iChunk, IChunkGet chunkGet, IChunkSet chunkSet) {
+        if (finished.get()) {
+            return chunkSet;
+        }
+        PlacementStateProcessor threadProcessor = threadProcessors.get();
+        try {
+            threadProcessor.initProcess(iChunk, chunkGet, chunkSet);
+            return threadProcessor.process();
+        } finally {
+            threadProcessor.uninit();
+        }
+    }
+
+    private void initProcess(IChunk iChunk, IChunkGet chunkGet, IChunkSet chunkSet) {
+        this.processChunkX = iChunk.getX() << 4;
+        this.processChunkZ = iChunk.getZ() << 4;
+        this.processChunkGet = chunkGet;
+        this.processChunkSet = chunkSet;
+    }
+
+    private void uninit() {
+        this.processChunkGet = null;
+        this.processChunkSet = null;
+    }
+
+    private IChunkSet process() {
+        Map<BlockVector3, CompoundTag> setTiles = processChunkSet.getTiles();
+        for (int layer = processChunkGet.getMinSectionPosition(); layer <= processChunkGet.getMaxSectionPosition(); layer++) {
+            int layerY = layer << 4;
+            char[] set = processChunkSet.loadIfPresent(layer);
+            if (set == null) {
+                continue;
+            }
+            for (int y = 0, i = 0; y < 16; y++, i += 256) {
+                int blockY = layerY + y;
+                checkAndPerformUpdate(setTiles, set, i, blockY, true);
+                checkAndPerformUpdate(setTiles, set, i, blockY, false);
+            }
+        }
+        return processChunkSet;
+    }
+
+    private void checkAndPerformUpdate(Map<BlockVector3, CompoundTag> setTiles, char[] set, int index, int blockY, boolean firstPass) {
+        for (int z = 0; z < 16; z++) {
+            int blockZ = processChunkZ + z;
+            for (int x = 0; x < 16; x++, index++) {
+                int blockX = processChunkX + x;
+                char ordinal = set[index];
+                BlockState state = BlockTypesCache.states[ordinal];
+                if (firstPass && !BlockCategories.STAIRS.contains(state)) {
+                    continue;
+                }
+                if (!mask.test(state)) {
+                    continue;
+                }
+                if (!firstPass && REQUIRES_SECOND_PASS.test(state)) {
+                    postCompleteSecondPasses.put(new SecondPass(
+                            blockX,
+                            blockY,
+                            blockZ,
+                            setTiles.isEmpty() ? null : ((BlockVector3ChunkMap<CompoundTag>) setTiles).remove(x, blockY, z)
+                    ), ordinal);
+                    set[index] = BlockTypesCache.ReservedIDs.__RESERVED__;
+                    continue;
+                }
+                char newOrdinal = getBlockOrdinal(blockX, blockY, blockZ, state);
+                if (newOrdinal == ordinal) {
+                    continue;
+                }
+                set[index] = newOrdinal;
+            }
+        }
+    }
+
+    @Override
+    public ProcessorScope getScope() {
+        return ProcessorScope.CHANGING_BLOCKS;
+    }
+
+    @Override
+    public void finish() {
+        flush();
+    }
+
+    @Override
+    public void flush() {
+        finished.set(true);
+        for (Map.Entry<SecondPass, Character> entry : postCompleteSecondPasses.entrySet()) {
+            BlockState state;
+            char ordinal = entry.getValue();
+            SecondPass secondPass = entry.getKey();
+            if (ordinal != 0) {
+                state = BlockTypesCache.states[ordinal];
+            } else {
+                state = extent.getBlock(secondPass.x, secondPass.y, secondPass.z);
+            }
+            char newOrdinal = getBlockOrdinal(secondPass.x, secondPass.y, secondPass.z, state);
+            if (newOrdinal == state.getOrdinalChar() && ordinal == 0) {
+                continue;
+            }
+            if (secondPass.tile != null) {
+                extent.setTile(secondPass.x, secondPass.y, secondPass.z, secondPass.tile);
+            }
+            extent.setBlock(secondPass.x, secondPass.y, secondPass.z, BlockTypesCache.states[newOrdinal]);
+        }
+        postCompleteSecondPasses.clear();
+    }
+
+    @Override
+    public abstract PlacementStateProcessor fork();
+
+    protected abstract char getStateAtFor(
+            int x,
+            int y,
+            int z,
+            BlockState state,
+            Vector3 clickPos,
+            Direction clickedFaceDirection,
+            BlockVector3 clickedBlock
+    );
+
+    public BlockState getBlockStateAt(int x, int y, int z) {
+        Character ord = postCompleteSecondPasses.get(new SecondPass(x, y, z, null));
+        if (ord != null && ord != 0) {
+            return BlockTypesCache.states[ord];
+        }
+        if (processChunkSet == null || (x & CHUNK_BLOCK_POS_MASK) != processChunkX || (z & CHUNK_BLOCK_POS_MASK) != processChunkZ) {
+            return extent.getBlock(x, y, z);
+        }
+        char[] set = processChunkSet.loadIfPresent(y >> 4);
+        if (set == null) {
+            return processChunkGet.getBlock(x & 15, y, z & 15);
+        }
+        char ordinal = set[(y & 15) << 8 | (z & 15) << 4 | (x & 15)];
+        if (ordinal == BlockTypesCache.ReservedIDs.__RESERVED__) {
+            return processChunkGet.getBlock(x & 15, y, z & 15);
+        }
+        return BlockTypesCache.states[ordinal];
+    }
+
+    public CompoundTag getTileAt(int x, int y, int z) {
+        SecondPass secondPass = new SecondPass(x, y, z, null);
+        Character ord = postCompleteSecondPasses.get(secondPass);
+        if (ord != null && ord != 0) {
+            // This should be rare enough...
+            for (SecondPass pass : postCompleteSecondPasses.keySet()) {
+                if (pass.hashCode() == secondPass.hashCode()) {
+                    return pass.tile != null ? pass.tile : BlockTypesCache.states[ord].getNbtData();
+                }
+            }
+            return BlockTypesCache.states[ord].getNbtData();
+        }
+        if (processChunkSet == null || (x & CHUNK_BLOCK_POS_MASK) != processChunkX || (z & CHUNK_BLOCK_POS_MASK) != processChunkZ) {
+            return extent.getFullBlock(x, y, z).getNbtData();
+        }
+        CompoundTag tile = processChunkSet.getTile(x & 15, y, z & 15);
+        if (tile != null) {
+            return tile;
+        }
+        char[] set = processChunkSet.loadIfPresent(y >> 4);
+        if (set == null) {
+            return processChunkGet.getFullBlock(x & 15, y, z & 15).getNbtData();
+        }
+        char ordinal = set[(y & 15) << 8 | (z & 15) << 4 | (x & 15)];
+        if (ordinal == BlockTypesCache.ReservedIDs.__RESERVED__) {
+            return processChunkGet.getFullBlock(x & 15, y, z & 15).getNbtData();
+        }
+        return BlockTypesCache.states[ordinal].getNbtData();
+    }
+
+    private char getBlockOrdinal(final int blockX, final int blockY, final int blockZ, final BlockState state) {
+        EnumSet<Direction> dirs = Direction.getDirections(state);
+        Direction clickedFaceDirection = null; // This should be always be set by the below.
+        Set<String> states = state.getStates().keySet().stream().map(Property::getName).collect(Collectors.toSet());
+        if (dirs.isEmpty() || states.contains("NORTH") && states.contains("EAST")) {
+            clickPos.setComponents(blockX + 0.5d, blockY, blockZ + 0.5d);
+            clickedFaceDirection = Direction.UP;
+            clickedBlock.setComponents(blockX, blockY - 1, blockZ);
+        } else {
+            boolean hadNesw = false;
+            for (Direction dir : NESW) {
+                if (dirs.contains(dir)) {
+                    clickedFaceDirection = dir.getLeft().getLeft(); // opposite
+                    clickPos.setComponents(
+                            (double) blockX + 0.5 * (1 + dir.getBlockX()),
+                            (double) blockY + 0.2,
+                            (double) blockZ + 0.5 * (1 + dir.getBlockZ())
+                    );
+                    clickedBlock.setComponents(blockX, blockY, blockZ).add(dir.toBlockVector());
+                    hadNesw = true;
+                    break;
+                }
+            }
+            if (hadNesw) {
+                if (dirs.contains(Direction.UP)) {
+                    clickPos.mutY(blockY + 0.5);
+                }
+            } else if (dirs.contains(Direction.UP)) {
+                clickedFaceDirection = Direction.DOWN;
+                clickPos.setComponents(blockX + 0.5d, blockY + 1d, blockZ + 0.5d);
+                clickedBlock.setComponents(blockX, blockY + 1, blockZ);
+            } else if (dirs.contains(Direction.DOWN)) {
+                clickedFaceDirection = Direction.UP;
+                clickPos.setComponents(blockX + 0.5d, blockY - 1d, blockZ + 0.5d);
+                clickedBlock.setComponents(blockX, blockY - 1, blockZ);
+            }
+        }
+        return getStateAtFor(blockX, blockY, blockZ, state, clickPos, clickedFaceDirection, clickedBlock);
+    }
+
+    @Override
+    public void applyBlock(FilterBlock block) {
+        if (finished.get()) {
+            return;
+        }
+        BlockState state = BlockTypesCache.states[block.getOrdinal()];
+        if (!mask.test(state)) {
+            return;
+        }
+        if (REQUIRES_SECOND_PASS.test(block.getBlock()) && ADJACENT_STAIR_MASK.test(extent, block)) {
+            postCompleteSecondPasses.put(new SecondPass(block), (char) 0);
+        }
+        char ordinal = (char) block.getOrdinal();
+        char newOrdinal = getBlockOrdinal(block.x(), block.y(), block.z(), block.getBlock());
+        if (ordinal != newOrdinal) {
+            block.setBlock(BlockTypesCache.states[newOrdinal]);
+        }
+    }
+
+    @Override
+    public boolean apply(Extent orDefault, BlockVector3 get, BlockVector3 set) throws WorldEditException {
+        if (orDefault == null) {
+            orDefault = extent;
+        }
+        BaseBlock block = orDefault.getFullBlock(get);
+        if (!mask.test(block)) {
+            return false;
+        }
+        if (REQUIRES_SECOND_PASS.test(block) && ADJACENT_STAIR_MASK.test(extent, set)) {
+            postCompleteSecondPasses.put(new SecondPass(set), (char) 0);
+            return false;
+        }
+        char newOrdinal = getBlockOrdinal(set.x(), set.y(), set.z(), block.toBlockState());
+        if (block.getOrdinalChar() != newOrdinal) {
+            BlockState newState = BlockTypesCache.states[newOrdinal];
+            orDefault.setBlock(set.x(), set.y(), set.z(), newState);
+            LinCompoundTag nbt = block.getNbt();
+            if (nbt != null && newState.getBlockType() == block.getBlockType()) {
+                orDefault.setTile(set.x(), set.y(), set.z(), new CompoundTag(nbt));
+            }
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public BaseBlock applyBlock(BlockVector3 position) {
+        if (finished.get()) {
+            return null;
+        }
+        BaseBlock block = extent.getFullBlock(position);
+        if (!mask.test(block)) {
+            return null;
+        }
+        if (REQUIRES_SECOND_PASS.test(block) && ADJACENT_STAIR_MASK.test(extent, position)) {
+            postCompleteSecondPasses.put(new SecondPass(position), (char) 0);
+            return null;
+        }
+        char newOrdinal = getBlockOrdinal(position.x(), position.y(), position.z(), block.toBlockState());
+        if (block.getOrdinalChar() != newOrdinal) {
+            BlockState state = BlockTypesCache.states[newOrdinal];
+            LinCompoundTag nbt = block.getNbt();
+            if (nbt != null && state.getBlockType() == block.getBlockType()) {
+                state.toBaseBlock(nbt);
+            }
+            return state.toBaseBlock();
+        }
+        return null;
+    }
+
+    protected record SecondPass(int x, int y, int z, CompoundTag tile) {
+
+        private SecondPass(BlockVector3 pos) {
+            this(pos.x(), pos.y(), pos.z(), null);
+        }
+
+        @Override
+        public int hashCode() {
+            return (x ^ (z << 12)) ^ (y << 24);
+        }
+
+    }
+
+}

worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/processor/PlacementStateProcessor.java

@@ -1,268 +0,0 @@
-package com.fastasyncworldedit.core.extent.processor;
-
-import com.fastasyncworldedit.core.extent.filter.block.FilterBlock;
-import com.fastasyncworldedit.core.math.MutableBlockVector3;
-import com.fastasyncworldedit.core.math.MutableVector3;
-import com.fastasyncworldedit.core.queue.Filter;
-import com.fastasyncworldedit.core.queue.IBatchProcessor;
-import com.fastasyncworldedit.core.queue.IChunk;
-import com.fastasyncworldedit.core.queue.IChunkGet;
-import com.fastasyncworldedit.core.queue.IChunkSet;
-import com.sk89q.jnbt.CompoundTag;
-import com.sk89q.jnbt.NBTUtils;
-import com.sk89q.worldedit.WorldEditException;
-import com.sk89q.worldedit.extent.AbstractDelegateExtent;
-import com.sk89q.worldedit.extent.Extent;
-import com.sk89q.worldedit.extent.NullExtent;
-import com.sk89q.worldedit.function.mask.BlockTypeMask;
-import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.math.BlockVector3;
-import com.sk89q.worldedit.math.Vector3;
-import com.sk89q.worldedit.registry.state.Property;
-import com.sk89q.worldedit.util.Direction;
-import com.sk89q.worldedit.world.block.BaseBlock;
-import com.sk89q.worldedit.world.block.BlockCategories;
-import com.sk89q.worldedit.world.block.BlockCategory;
-import com.sk89q.worldedit.world.block.BlockState;
-import com.sk89q.worldedit.world.block.BlockTypes;
-import com.sk89q.worldedit.world.block.BlockTypesCache;
-import org.enginehub.linbus.tree.LinCompoundTag;
-
-import java.util.EnumSet;
-import java.util.Set;
-import java.util.stream.Collectors;
-
-public abstract class PlacementStateProcessor extends AbstractDelegateExtent implements IBatchProcessor, Filter, Pattern {
-
-    private static final Direction[] NESW = new Direction[]{Direction.NORTH, Direction.EAST, Direction.SOUTH, Direction.WEST};
-    private static volatile boolean SETUP = false;
-    private static BlockTypeMask DEFAULT_MASK = null;
-
-    protected final Extent extent;
-    protected final BlockTypeMask mask;
-    protected final boolean includeUnedited;
-    private final MutableVector3 clickPos = new MutableVector3();
-    private final MutableBlockVector3 clickedBlock = new MutableBlockVector3();
-
-    public PlacementStateProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
-        super(extent);
-        // Required here as child classes are located within adapters and will therefore be statically accessed on startup,
-        // meaning we attempt to access BlockTypes class before it is correctly initialised.
-        if (!SETUP) {
-            synchronized (PlacementStateProcessor.class) {
-                if (!SETUP) {
-                    setup();
-                }
-            }
-        }
-        this.extent = extent;
-        this.mask = mask == null ? DEFAULT_MASK : mask;
-        this.includeUnedited = includeUnedited;
-    }
-
-    private static void setup() {
-        DEFAULT_MASK = new BlockTypeMask(new NullExtent());
-        DEFAULT_MASK.add(
-                BlockTypes.IRON_BARS,
-                BlockTypes.GLASS_PANE,
-                BlockTypes.BLACK_STAINED_GLASS_PANE,
-                BlockTypes.BLUE_STAINED_GLASS_PANE,
-                BlockTypes.BROWN_STAINED_GLASS_PANE,
-                BlockTypes.LIGHT_BLUE_STAINED_GLASS_PANE,
-                BlockTypes.PINK_STAINED_GLASS_PANE,
-                BlockTypes.LIGHT_GRAY_STAINED_GLASS_PANE,
-                BlockTypes.GRAY_STAINED_GLASS_PANE,
-                BlockTypes.CYAN_STAINED_GLASS_PANE,
-                BlockTypes.PURPLE_STAINED_GLASS_PANE,
-                BlockTypes.GREEN_STAINED_GLASS_PANE,
-                BlockTypes.LIME_STAINED_GLASS_PANE,
-                BlockTypes.MAGENTA_STAINED_GLASS_PANE,
-                BlockTypes.YELLOW_STAINED_GLASS_PANE,
-                BlockTypes.ORANGE_STAINED_GLASS_PANE,
-                BlockTypes.RED_STAINED_GLASS_PANE,
-                BlockTypes.WHITE_STAINED_GLASS_PANE,
-                BlockTypes.CHORUS_PLANT,
-                BlockTypes.DRIPSTONE_BLOCK,
-                BlockTypes.POINTED_DRIPSTONE,
-                BlockTypes.BIG_DRIPLEAF,
-                BlockTypes.BIG_DRIPLEAF_STEM,
-                BlockTypes.CAMPFIRE,
-                BlockTypes.CHEST,
-                BlockTypes.TRAPPED_CHEST,
-                BlockTypes.CRAFTER,
-                BlockTypes.MUSHROOM_STEM,
-                BlockTypes.BROWN_MUSHROOM_BLOCK,
-                BlockTypes.RED_MUSHROOM_BLOCK,
-                BlockTypes.TRIPWIRE,
-                BlockTypes.TWISTING_VINES_PLANT,
-                BlockTypes.CAVE_VINES_PLANT,
-                BlockTypes.WEEPING_VINES_PLANT,
-                BlockTypes.VINE,
-                BlockTypes.REDSTONE_WIRE
-        );
-        BlockCategory[] categories = new BlockCategory[]{BlockCategories.FENCES, BlockCategories.FENCE_GATES, BlockCategories.STAIRS, BlockCategories.WALLS, BlockCategories.BAMBOO_BLOCKS, BlockCategories.CAVE_VINES, BlockCategories.TALL_FLOWERS};
-        for (BlockCategory category : categories) {
-            if (category != null) {
-                DEFAULT_MASK.add(category.getAll());
-            }
-        }
-        SETUP = true;
-    }
-
-    @Override
-    public IChunkSet processSet(IChunk iChunk, IChunkGet iChunkGet, IChunkSet iChunkSet) {
-        int chunkX = iChunk.getX() << 4;
-        int chunkZ = iChunk.getZ() << 4;
-        for (int layer = iChunkGet.getMinSectionPosition(); layer <= iChunkGet.getMaxSectionPosition(); layer++) {
-            int layerY = layer << 4;
-            char[] set = iChunkSet.loadIfPresent(layer);
-            char[] get = null;
-            if (set == null) {
-                if (!includeUnedited) {
-                    continue;
-                }
-            }
-            for (int y = 0, i = 0; y < 16; y++) {
-                int blockY = layerY + y;
-                for (int z = 0; z < 16; z++) {
-                    int blockZ = chunkZ + z;
-                    for (int x = 0; x < 16; x++, i++) {
-                        int blockX = chunkX + x;
-                        char ordinal = set == null ? BlockTypesCache.ReservedIDs.__RESERVED__ : set[i];
-                        if (ordinal == BlockTypesCache.ReservedIDs.__RESERVED__) {
-                            if (!includeUnedited) {
-                                continue;
-                            }
-                            if (get == null) {
-                                get = iChunkGet.load(layer);
-                            }
-                            ordinal = get[i];
-                        }
-                        BlockState state = BlockTypesCache.states[ordinal];
-                        if (!mask.test(state.getBlockType())) {
-                            continue;
-                        }
-                        char newOrdinal = getBlockOrdinal(blockX, blockY, blockZ, state);
-                        if (set == null) {
-                            set = iChunkSet.load(layer);
-                        }
-                        set[i] = newOrdinal;
-                    }
-                }
-            }
-        }
-        return iChunkSet;
-    }
-
-    @Override
-    public ProcessorScope getScope() {
-        return ProcessorScope.CHANGING_BLOCKS;
-    }
-
-    @Override
-    public abstract PlacementStateProcessor fork();
-
-    // Require block type to avoid duplicate lookup
-    protected abstract char getStateAtFor(
-            int x, int y, int z, BlockState state, Vector3 clickPos, Direction clickedFaceDirection, BlockVector3 clickedBlock
-    );
-
-    private char getBlockOrdinal(
-            final int blockX,
-            final int blockY,
-            final int blockZ,
-            final BlockState state
-    ) {
-        EnumSet<Direction> dirs = Direction.getDirections(state);
-        Direction clickedFaceDirection = null; // This should be always be set by the below.
-        Set<String> states = state.getStates().keySet().stream().map(Property::getName).collect(Collectors.toSet());
-        if (dirs.isEmpty() || states.contains("NORTH") && states.contains("EAST")) {
-            clickPos.setComponents(blockX + 0.5d, blockY, blockZ + 0.5d);
-            clickedFaceDirection = Direction.UP;
-            clickedBlock.setComponents(blockX, blockY - 1, blockZ);
-        } else {
-            boolean hadNesw = false;
-            for (Direction dir : NESW) {
-                if (dirs.contains(dir)) {
-                    clickedFaceDirection = dir.getLeft().getLeft(); // opposite
-                    clickPos.setComponents(
-                            (double) blockX + 0.5 * (1 + dir.getBlockX()),
-                            (double) blockY + 0.2,
-                            (double) blockZ + 0.5 * (1 + dir.getBlockZ())
-                    );
-                    clickedBlock.setComponents(blockX, blockY, blockZ).add(dir.toBlockVector());
-                    hadNesw = true;
-                    break;
-                }
-            }
-            if (hadNesw) {
-                if (dirs.contains(Direction.UP)) {
-                    clickPos.mutY(blockY + 0.5);
-                }
-            } else if (dirs.contains(Direction.UP)) {
-                clickedFaceDirection = Direction.DOWN;
-                clickPos.setComponents(blockX + 0.5d, blockY + 1d, blockZ + 0.5d);
-                clickedBlock.setComponents(blockX, blockY + 1, blockZ);
-            } else if (dirs.contains(Direction.DOWN)) {
-                clickedFaceDirection = Direction.UP;
-                clickPos.setComponents(blockX + 0.5d, blockY - 1d, blockZ + 0.5d);
-                clickedBlock.setComponents(blockX, blockY - 1, blockZ);
-            }
-        }
-        return getStateAtFor(blockX, blockY, blockZ, state, clickPos, clickedFaceDirection, clickedBlock);
-    }
-
-    @Override
-    public void applyBlock(FilterBlock block) {
-        BlockState state = BlockTypesCache.states[block.getOrdinal()];
-        if (!mask.test(state.getBlockType())) {
-            return;
-        }
-        char ordinal = (char) block.getOrdinal();
-        char newOrdinal = getBlockOrdinal(block.x(), block.y(), block.z(), block.getBlock());
-        if (ordinal != newOrdinal) {
-            block.setBlock(BlockTypesCache.states[newOrdinal]);
-        }
-    }
-
-    @Override
-    public boolean apply(Extent orDefault, BlockVector3 get, BlockVector3 set) throws WorldEditException {
-        if (orDefault == null) {
-            orDefault = extent;
-        }
-        BaseBlock block = orDefault.getFullBlock(get);
-        if (!mask.test(block.getBlockType())) {
-            return false;
-        }
-        char newOrdinal = getBlockOrdinal(set.x(), set.y(), set.z(), block.toBlockState());
-        if (block.getOrdinalChar() != newOrdinal) {
-            BlockState newState = BlockTypesCache.states[newOrdinal];
-            orDefault.setBlock(set, newState);
-            LinCompoundTag nbt = block.getNbt();
-            if (nbt != null && newState.getBlockType() == block.getBlockType()) {
-                orDefault.setTile(set.x(), set.y(), set.z(), new CompoundTag(nbt));
-            }
-            return true;
-        }
-        return false;
-    }
-
-    @Override
-    public BaseBlock applyBlock(final BlockVector3 position) {
-        BaseBlock block = extent.getFullBlock(position);
-        if (!mask.test(block.getBlockType())) {
-            return null;
-        }
-        char newOrdinal = getBlockOrdinal(position.x(), position.y(), position.z(), block.toBlockState());
-        if (block.getOrdinalChar() != newOrdinal) {
-            BlockState state = BlockTypesCache.states[newOrdinal];
-            LinCompoundTag nbt = block.getNbt();
-            if (nbt != null && state.getBlockType() == block.getBlockType()) {
-                return state.toBaseBlock(nbt);
-            }
-            return state.toBaseBlock();
-        }
-        return null;
-    }
-
-}

worldedit-core/src/main/java/com/fastasyncworldedit/core/function/mask/Adjacent2DMask.java

@@ -0,0 +1,53 @@
+package com.fastasyncworldedit.core.function.mask;
+
+import com.fastasyncworldedit.core.math.MutableBlockVector3;
+import com.sk89q.worldedit.function.mask.AbstractMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.math.BlockVector3;
+
+public class Adjacent2DMask extends AbstractMask {
+
+    private final int min;
+    private final int max;
+    private final Mask mask;
+    private final MutableBlockVector3 vector;
+
+    public Adjacent2DMask(Mask mask, int requiredMin, int requiredMax) {
+        this.mask = mask;
+        this.min = requiredMin;
+        this.max = requiredMax;
+        this.vector = new MutableBlockVector3();
+    }
+
+    @Override
+    public boolean test(BlockVector3 bv) {
+        vector.setComponents(bv);
+        double x = bv.x();
+        double z = bv.z();
+        vector.mutX(x + 1);
+        int count = 0;
+        if (mask.test(vector) && ++count == min && max >= 4) {
+            return true;
+        }
+        vector.mutX(x - 1);
+        if (mask.test(vector) && ++count == min && max >= 4) {
+            return true;
+        }
+        vector.mutX(x);
+        vector.mutZ(z + 1);
+        if (mask.test(vector) && ++count == min && max >= 4) {
+            return true;
+        }
+        vector.mutZ(z - 1);
+        if (mask.test(vector) && ++count == min && max >= 4) {
+            return true;
+        }
+        return count >= min && count <= max;
+    }
+
+    @Override
+    public Mask copy() {
+        return new Adjacent2DMask(mask.copy(), min, max);
+    }
+
+}

worldedit-core/src/main/java/com/fastasyncworldedit/core/function/mask/AdjacentAny2DMask.java

@@ -0,0 +1,66 @@
+package com.fastasyncworldedit.core.function.mask;
+
+import com.fastasyncworldedit.core.math.MutableBlockVector3;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.function.mask.AbstractExtentMask;
+import com.sk89q.worldedit.function.mask.AbstractMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.math.BlockVector3;
+
+/**
+ * Just an optimized version of the Adjacent Mask for single adjacency.
+ */
+public class AdjacentAny2DMask extends AbstractMask {
+
+    private final Mask mask;
+    private final MutableBlockVector3 mutable;
+
+    public AdjacentAny2DMask(Mask mask) {
+        this(mask, true);
+    }
+
+    public AdjacentAny2DMask(Mask mask, boolean cache) {
+        this.mask = cache ? CachedMask.cache(mask) : mask;
+        mutable = new MutableBlockVector3();
+    }
+
+    @Override
+    public boolean test(BlockVector3 v) {
+        int x = v.x();
+        int y = v.y();
+        int z = v.z();
+        if (mask.test(mutable.setComponents(x + 1, y, z))) {
+            return true;
+        }
+        if (mask.test(mutable.setComponents(x - 1, y, z))) {
+            return true;
+        }
+        if (mask.test(mutable.setComponents(x, y, z + 1))) {
+            return true;
+        }
+        return mask.test(mutable.setComponents(x, y, z - 1));
+    }
+
+    public boolean test(Extent extent, BlockVector3 v) {
+        AbstractExtentMask extentMask = (AbstractExtentMask) mask;
+        int x = v.x();
+        int y = v.y();
+        int z = v.z();
+        if (extentMask.test(extent, mutable.setComponents(x + 1, y, z))) {
+            return true;
+        }
+        if (extentMask.test(extent, mutable.setComponents(x - 1, y, z))) {
+            return true;
+        }
+        if (extentMask.test(extent, mutable.setComponents(x, y, z + 1))) {
+            return true;
+        }
+        return extentMask.test(extent, mutable.setComponents(x, y, z - 1));
+    }
+
+    @Override
+    public Mask copy() {
+        return new AdjacentAny2DMask(mask.copy(), false);
+    }
+
+}

worldedit-core/src/main/java/com/fastasyncworldedit/core/function/mask/AdjacentAnyMask.java

@@ -23,7 +23,7 @@ public class AdjacentAnyMask extends AbstractMask implements ResettableMask {
     }
 
     AdjacentAnyMask(CachedMask mask, int minY, int maxY) {
-        this.mask = CachedMask.cache(mask);
+        this.mask = mask;
         mutable = new MutableBlockVector3();
         this.minY = minY;
         this.maxY = maxY;

worldedit-core/src/main/java/com/fastasyncworldedit/core/history/changeset/FaweStreamChangeSet.java

@@ -461,7 +461,6 @@ public abstract class FaweStreamChangeSet extends AbstractChangeSet {
                 } catch (EOFException ignored) {
                 } catch (Exception e) {
                     e.printStackTrace();
-                    e.printStackTrace();
                 }
                 try {
                     is.close();

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/Filter.java

@@ -62,4 +62,13 @@ public interface Filter {
 
     }
 
+    /**
+     * Signals to the filter the edit has concluded
+     *
+     * @since TODO
+     */
+    default void finish() {
+
+    }
+
 }

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/IChunkSet.java

@@ -7,6 +7,7 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.OutputExtent;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
@@ -139,4 +140,19 @@ public interface IChunkSet extends IBlocks, OutputExtent {
         return this;
     }
 
+    /**
+     * Set the side effects to be used when settings these blocks
+     *
+     * @since TODO
+     */
+    void setSideEffectSet(@Nonnull SideEffectSet sideEffectSet);
+
+    /**
+     * Get the side effects to be used when settings these blocks
+     *
+     * @since TODO
+     */
+    @Nonnull
+    SideEffectSet getSideEffectSet();
+
 }

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/IDelegateFilter.java

@@ -38,6 +38,11 @@ public interface IDelegateFilter extends Filter {
         return this;
     }
 
+    @Override
+    default void finish() {
+        getParent().finish();
+    }
+
     Filter newInstance(Filter other);
 
 }

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/IQueueExtent.java

@@ -10,6 +10,7 @@ import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.util.SideEffectSet;
 
 import javax.annotation.Nullable;
 import java.io.Flushable;
@@ -81,6 +82,20 @@ public interface IQueueExtent<T extends IChunk> extends Flushable, Trimable, ICh
 
     boolean isFastMode();
 
+    /**
+     * Set the side effects to be used with this extent
+     *
+     * @since TODO
+     */
+    void setSideEffectSet(SideEffectSet sideEffectSet);
+
+    /**
+     * Get the side effects to be used with this extent
+     *
+     * @since TODO
+     */
+    SideEffectSet getSideEffectSet();
+
     /**
      * Create a new root IChunk object. Full chunks will be reused, so a more optimized chunk can be
      * returned in that case.

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/ParallelQueueExtent.java

@@ -20,11 +20,14 @@ import com.fastasyncworldedit.core.queue.Filter;
 import com.fastasyncworldedit.core.queue.IQueueChunk;
 import com.fastasyncworldedit.core.queue.IQueueExtent;
 import com.sk89q.worldedit.MaxChangedBlocksException;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.mask.BlockMask;
 import com.sk89q.worldedit.function.mask.ExistingBlockMask;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.operation.Operation;
+import com.sk89q.worldedit.function.operation.RunContext;
 import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
@@ -32,6 +35,7 @@ import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Countable;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
@@ -39,6 +43,7 @@ import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import org.apache.logging.log4j.Logger;
 
+import javax.annotation.Nullable;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
@@ -58,11 +63,12 @@ public class ParallelQueueExtent extends PassthroughExtent {
     // not very important)
     private final boolean[] faweExceptionReasonsUsed = new boolean[FaweException.Type.values().length];
     private final boolean fastmode;
+    private final SideEffectSet sideEffectSet;
     private int changes;
     private int lastException = Integer.MIN_VALUE;
     private int exceptionCount = 0;
 
-    public ParallelQueueExtent(QueueHandler handler, World world, boolean fastmode) {
+    public ParallelQueueExtent(QueueHandler handler, World world, boolean fastmode, @Nullable SideEffectSet sideEffectSet) {
         super(handler.getQueue(world, new BatchProcessorHolder(), new BatchProcessorHolder()));
         this.world = world;
         this.handler = handler;
@@ -75,6 +81,7 @@ public class ParallelQueueExtent extends PassthroughExtent {
             ((MultiBatchProcessor) this.postProcessor.getProcessor()).setFaweExceptionArray(faweExceptionReasonsUsed);
         }
         this.fastmode = fastmode;
+        this.sideEffectSet = sideEffectSet == null ? SideEffectSet.defaults() : sideEffectSet;
     }
 
     /**
@@ -121,7 +128,12 @@ public class ParallelQueueExtent extends PassthroughExtent {
 
     @SuppressWarnings("rawtypes")
     private IQueueExtent<IQueueChunk> getNewQueue() {
-        return handler.getQueue(world, this.processor, this.postProcessor);
+        SingleThreadQueueExtent queue = (SingleThreadQueueExtent) handler.getQueue(world, this.processor, this.postProcessor);
+        queue.setFastMode(fastmode);
+        queue.setSideEffectSet(sideEffectSet);
+        queue.setFaweExceptionArray(faweExceptionReasonsUsed);
+        enter(queue);
+        return queue;
     }
 
     @Override
@@ -140,6 +152,8 @@ public class ParallelQueueExtent extends PassthroughExtent {
                 BlockVector2 pos = chunksIter.next();
                 block = getExtent().apply(block, filter, region, pos.x(), pos.z(), full);
             }
+            getExtent().flush();
+            filter.finish();
         } else {
             final ForkJoinTask[] tasks = IntStream.range(0, size).mapToObj(i -> handler.submit(() -> {
                 try {
@@ -147,13 +161,9 @@ public class ParallelQueueExtent extends PassthroughExtent {
                     final Region newRegion = region.clone();
                     // Create a chunk that we will reuse/reset for each operation
                     final SingleThreadQueueExtent queue = (SingleThreadQueueExtent) getNewQueue();
-                    queue.setFastMode(fastmode);
-                    queue.setFaweExceptionArray(faweExceptionReasonsUsed);
-                    enter(queue);
                     synchronized (queue) {
                         try {
                             ChunkFilterBlock block = null;
-
                             while (true) {
                                 // Get the next chunk posWeakChunk
                                 final int chunkX;
@@ -169,6 +179,7 @@ public class ParallelQueueExtent extends PassthroughExtent {
                                 block = queue.apply(block, newFilter, newRegion, chunkX, chunkZ, full);
                             }
                             queue.flush();
+                            filter.finish();
                         } catch (Throwable t) {
                             if (t instanceof FaweException) {
                                 Fawe.handleFaweException(faweExceptionReasonsUsed, (FaweException) t, LOGGER);
@@ -205,6 +216,24 @@ public class ParallelQueueExtent extends PassthroughExtent {
         return filter;
     }
 
+    @Override
+    protected Operation commitBefore() {
+        return new Operation() {
+            @Override
+            public Operation resume(final RunContext run) throws WorldEditException {
+                getExtent().commit();
+                processor.flush();
+                getExtent().flush();
+                return null;
+            }
+
+            @Override
+            public void cancel() {
+
+            }
+        };
+    }
+
     @Override
     public int countBlocks(Region region, Mask searchMask) {
         return

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/SingleThreadQueueExtent.java

@@ -27,6 +27,7 @@ import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.World;
 import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap;
 import org.apache.logging.log4j.Logger;
@@ -68,6 +69,7 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
     private boolean[] faweExceptionReasonsUsed = new boolean[FaweException.Type.values().length];
     private int lastException = Integer.MIN_VALUE;
     private int exceptionCount = 0;
+    private SideEffectSet sideEffectSet = SideEffectSet.defaults();
 
     public SingleThreadQueueExtent() {
     }
@@ -110,6 +112,16 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
         this.fastmode = fastmode;
     }
 
+    @Override
+    public void setSideEffectSet(SideEffectSet sideEffectSet) {
+        this.sideEffectSet = sideEffectSet;
+    }
+
+    @Override
+    public SideEffectSet getSideEffectSet() {
+        return sideEffectSet;
+    }
+
     @Override
     public int getMinY() {
         return minY;
@@ -120,6 +132,10 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
         return maxY;
     }
 
+    public World getWorld() {
+        return world;
+    }
+
     /**
      * Sets the cached boolean array of length {@code FaweException.Type.values().length} that determines if a thrown
      * {@link FaweException} of type {@link FaweException.Type} should be output to console, rethrown to attempt to be visible
@@ -278,10 +294,16 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
     private ChunkHolder poolOrCreate(int chunkX, int chunkZ) {
         ChunkHolder next = create(false);
         next.init(this, chunkX, chunkZ);
-        next.setFastMode(isFastMode());
         return next;
     }
 
+    @Override
+    public IQueueChunk wrap(IQueueChunk chunk) {
+        chunk.setFastMode(isFastMode());
+        chunk.setSideEffectSet(getSideEffectSet());
+        return chunk;
+    }
+
     @Override
     public final IQueueChunk getOrCreateChunk(int x, int z) {
         getChunkLock.lock();

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/blocks/BitSetBlocks.java

@@ -6,6 +6,7 @@ import com.fastasyncworldedit.core.nbt.FaweCompoundTag;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.util.collection.MemBlockSet;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
@@ -212,6 +213,16 @@ public class BitSetBlocks implements IChunkSet {
         return false;
     }
 
+    @Override
+    public void setSideEffectSet(SideEffectSet sideEffectSet) {
+
+    }
+
+    @Override
+    public SideEffectSet getSideEffectSet() {
+        return SideEffectSet.none();
+    }
+
     @Override
     public int getSectionCount() {
         return layers;

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/blocks/CharSetBlocks.java

@@ -9,6 +9,7 @@ import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.queue.Pool;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
@@ -44,6 +45,7 @@ public class CharSetBlocks extends CharBlocks implements IChunkSet {
     public EnumMap<HeightMapType, int[]> heightMaps;
     private boolean fastMode = false;
     private int bitMask = -1;
+    private SideEffectSet sideEffectSet = SideEffectSet.defaults();
 
     private CharSetBlocks() {
         // Expand as we go
@@ -374,10 +376,21 @@ public class CharSetBlocks extends CharBlocks implements IChunkSet {
                 heightMaps != null ? new EnumMap<>(heightMaps) : null,
                 defaultOrdinal(),
                 fastMode,
-                bitMask
+                bitMask,
+                sideEffectSet
         );
     }
 
+    @Override
+    public void setSideEffectSet(SideEffectSet sideEffectSet) {
+        this.sideEffectSet = sideEffectSet;
+    }
+
+    @Override
+    public SideEffectSet getSideEffectSet() {
+        return sideEffectSet;
+    }
+
     static char[][] createLightCopy(char[][] lightArr, int sectionCount) {
         if (lightArr == null) {
             return null;

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/blocks/ThreadUnsafeCharBlocks.java

@@ -9,6 +9,7 @@ import com.fastasyncworldedit.core.queue.IBlocks;
 import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
@@ -51,6 +52,7 @@ public class ThreadUnsafeCharBlocks implements IChunkSet, IBlocks {
     private Map<HeightMapType, int[]> heightMaps;
     private boolean fastMode;
     private int bitMask;
+    private SideEffectSet sideEffectSet;
 
     /**
      * New instance given the data stored in a {@link CharSetBlocks} instance.
@@ -71,7 +73,8 @@ public class ThreadUnsafeCharBlocks implements IChunkSet, IBlocks {
             Map<HeightMapType, int[]> heightMaps,
             char defaultOrdinal,
             boolean fastMode,
-            int bitMask
+            int bitMask,
+            SideEffectSet sideEffectSet
     ) {
         this.blocks = blocks;
         this.minSectionPosition = minSectionPosition;
@@ -87,6 +90,7 @@ public class ThreadUnsafeCharBlocks implements IChunkSet, IBlocks {
         this.defaultOrdinal = defaultOrdinal;
         this.fastMode = fastMode;
         this.bitMask = bitMask;
+        this.sideEffectSet = sideEffectSet;
     }
 
     @Override
@@ -480,10 +484,21 @@ public class ThreadUnsafeCharBlocks implements IChunkSet, IBlocks {
                 heightMaps != null ? new HashMap<>(heightMaps) : null,
                 defaultOrdinal,
                 fastMode,
-                bitMask
+                bitMask,
+                sideEffectSet
         );
     }
 
+    @Override
+    public void setSideEffectSet(SideEffectSet sideEffectSet) {
+        this.sideEffectSet = sideEffectSet;
+    }
+
+    @Override
+    public SideEffectSet getSideEffectSet() {
+        return sideEffectSet;
+    }
+
     @Override
     public boolean trim(boolean aggressive) {
         return false;

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/chunk/ChunkHolder.java

@@ -15,6 +15,7 @@ import com.fastasyncworldedit.core.util.MemUtil;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
@@ -51,6 +52,7 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
     private boolean isInit = false; // Lighting handles queue differently. It relies on the chunk cache and not doing init.
     private boolean createCopy = false;
     private long initTime = -1L;
+    private SideEffectSet sideEffectSet;
 
     private ChunkHolder() {
         this.delegate = NULL;
@@ -150,6 +152,16 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
         return chunkSet != null && chunkSet.hasBiomes(layer);
     }
 
+    @Override
+    public void setSideEffectSet(SideEffectSet sideEffectSet) {
+        this.sideEffectSet = sideEffectSet;
+    }
+
+    @Override
+    public SideEffectSet getSideEffectSet() {
+        return sideEffectSet;
+    }
+
     public boolean isInit() {
         return isInit;
     }
@@ -874,7 +886,6 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
     public synchronized void filterBlocks(Filter filter, ChunkFilterBlock block, @Nullable Region region, boolean full) {
         final IChunkGet get = getOrCreateGet();
         final IChunkSet set = getOrCreateSet();
-        set.setFastMode(fastmode);
         try {
             block.filter(this, get, set, filter, region, full);
         } finally {
@@ -948,13 +959,21 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
         return chunkSet;
     }
 
+    public final IChunkSet getChunkSet() {
+        return chunkSet;
+    }
+
     /**
      * Create a wrapped set object
      * - The purpose of wrapping is to allow different extents to intercept / alter behavior
      * - e.g., caching, optimizations, filtering
      */
     private IChunkSet newWrappedSet() {
-        return extent.getCachedSet(chunkX, chunkZ);
+        IChunkSet set = extent.getCachedSet(chunkX, chunkZ);
+        set.setFastMode(fastmode);
+        set.setSideEffectSet(sideEffectSet);
+        set.setBitMask(bitMask);
+        return set;
     }
 
     /**
@@ -985,7 +1004,6 @@ public class ChunkHolder<T extends Future<T>> implements IQueueChunk<T> {
     @Override
     public synchronized T call() {
         if (chunkSet != null && !chunkSet.isEmpty()) {
-            chunkSet.setBitMask(bitMask);
             IChunkSet copy = chunkSet.createCopy();
             return this.call(copy, () -> {
                 // Do nothing

worldedit-core/src/main/java/com/fastasyncworldedit/core/queue/implementation/chunk/NullChunk.java

@@ -8,6 +8,7 @@ import com.fastasyncworldedit.core.queue.IChunkSet;
 import com.fastasyncworldedit.core.queue.IQueueChunk;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
@@ -86,6 +87,16 @@ public final class NullChunk implements IQueueChunk {
         return false;
     }
 
+    @Override
+    public void setSideEffectSet(SideEffectSet sideEffectSet) {
+
+    }
+
+    @Override
+    public SideEffectSet getSideEffectSet() {
+        return SideEffectSet.none();
+    }
+
     @Nonnull
     public int[] getHeightMap(@Nullable HeightMapType type) {
         return new int[256];

worldedit-core/src/main/java/com/fastasyncworldedit/core/util/ExtentTraverser.java

@@ -1,7 +1,11 @@
 package com.fastasyncworldedit.core.util;
 
+import com.fastasyncworldedit.core.queue.implementation.ParallelQueueExtent;
+import com.fastasyncworldedit.core.queue.implementation.SingleThreadQueueExtent;
+import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.extent.AbstractDelegateExtent;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.world.World;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
@@ -21,6 +25,26 @@ public class ExtentTraverser<T extends Extent> {
         this.parent = parent;
     }
 
+    /**
+     * Get the world backing the given extent, if present, else null.
+     *
+     * @since TODO
+     */
+    @Nullable
+    public static World getWorldFromExtent(Extent extent) {
+        if (extent.isWorld()) {
+            return (World) extent;
+        } else if (extent instanceof EditSession session) {
+            return session.getWorld();
+        } else if (extent instanceof SingleThreadQueueExtent stqe) {
+            return stqe.getWorld();
+        } else if (extent instanceof ParallelQueueExtent pqe) {
+            return ((SingleThreadQueueExtent) pqe.getExtent()).getWorld();
+        } else {
+            return new ExtentTraverser<>(extent).findAndGet(World.class);
+        }
+    }
+
     public boolean exists() {
         return root != null;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/EditSessionBuilder.java

@@ -64,7 +64,10 @@ import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.regions.RegionIntersection;
 import com.sk89q.worldedit.util.Identifiable;
+import com.sk89q.worldedit.util.SideEffect;
+import com.sk89q.worldedit.util.SideEffectSet;
 import com.sk89q.worldedit.util.eventbus.EventBus;
 import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
@@ -104,6 +107,7 @@ public final class EditSessionBuilder {
     private Extent extent;
     private boolean compiled;
     private boolean wrapped;
+    private SideEffectSet sideEffectSet = SideEffectSet.defaults();
 
     private @Nullable
     World world;
@@ -415,6 +419,14 @@ public final class EditSessionBuilder {
         return setDirty();
     }
 
+    /**
+     * Set the side effects to be used with this edit
+     */
+    public EditSessionBuilder setSideEffectSet(@Nullable SideEffectSet sideEffectSet) {
+        this.sideEffectSet = sideEffectSet;
+        return setDirty();
+    }
+
     /**
      * Compile the builder to the settings given. Prepares history, limits, lighting, etc.
      */
@@ -445,6 +457,9 @@ public final class EditSessionBuilder {
                 fastMode = actor.getSession().hasFastMode();
             }
         }
+        if (fastMode) {
+            sideEffectSet = SideEffectSet.none();
+        }
         if (checkMemory == null) {
             checkMemory = actor != null && !this.fastMode;
         }
@@ -470,7 +485,12 @@ public final class EditSessionBuilder {
                 if (unwrapped instanceof IQueueExtent) {
                     extent = queue = (IQueueExtent) unwrapped;
                 } else if (Settings.settings().QUEUE.PARALLEL_THREADS > 1 && !Fawe.isMainThread()) {
-                    ParallelQueueExtent parallel = new ParallelQueueExtent(Fawe.instance().getQueueHandler(), world, fastMode);
+                    ParallelQueueExtent parallel = new ParallelQueueExtent(
+                            Fawe.instance().getQueueHandler(),
+                            world,
+                            fastMode,
+                            sideEffectSet
+                    );
                     queue = parallel.getExtent();
                     extent = parallel;
                 } else {
@@ -491,7 +511,7 @@ public final class EditSessionBuilder {
             }
             extent = this.bypassAll = wrapExtent(extent, eventBus, event, EditSession.Stage.BEFORE_CHANGE);
             this.bypassHistory = this.extent = wrapExtent(bypassAll, eventBus, event, EditSession.Stage.BEFORE_REORDER);
-            if (!this.fastMode || changeSet != null) {
+            if (!this.fastMode  || this.sideEffectSet.shouldApply(SideEffect.HISTORY) || changeSet != null) {
                 if (changeSet == null) {
                     if (Settings.settings().HISTORY.USE_DISK) {
                         UUID uuid = actor == null ? Identifiable.CONSOLE : actor.getUniqueId();
@@ -546,13 +566,29 @@ public final class EditSessionBuilder {
             }
             // There's no need to do the below (and it'll also just be a pain to implement) if we're not placing chunks
             if (placeChunks) {
-                if (((relightMode != null && relightMode != RelightMode.NONE) || (relightMode == null && Settings.settings().LIGHTING.MODE > 0))) {
+                if (this.sideEffectSet.shouldApply(SideEffect.LIGHTING) || (relightMode != null && relightMode != RelightMode.NONE)) {
-                    relighter = WorldEdit.getInstance().getPlatformManager()
+                    relighter = WorldEdit
+                            .getInstance()
+                            .getPlatformManager()
                             .queryCapability(Capability.WORLD_EDITING)
-                            .getRelighterFactory().createRelighter(relightMode, world, queue);
+                            .getRelighterFactory()
+                            .createRelighter(relightMode, world, queue);
                     queue.addProcessor(new RelightProcessor(relighter));
                 }
+                if (this.sideEffectSet.shouldApply(SideEffect.HEIGHTMAPS)) {
                     queue.addProcessor(new HeightmapProcessor(world.getMinY(), world.getMaxY()));
+                }
+                if (this.sideEffectSet.shouldApply(SideEffect.UPDATE) || this.sideEffectSet.shouldApply(SideEffect.NEIGHBORS) || this.sideEffectSet.shouldApply(
+                        SideEffect.VALIDATION)) {
+                    Region region = allowedRegions == null || allowedRegions.length == 0
+                            ? null
+                            : allowedRegions.length == 1 ? allowedRegions[0] : new RegionIntersection(allowedRegions);
+                    queue.addProcessor(WorldEdit
+                            .getInstance()
+                            .getPlatformManager()
+                            .queryCapability(Capability.WORLD_EDITING)
+                            .getPlatformPlacementProcessor(extent, null, region));
+                }
 
                 if (!Settings.settings().EXPERIMENTAL.KEEP_ENTITIES_IN_BLOCKS) {
                     queue.addProcessor(new EntityInBlockRemovingProcessor());
@@ -714,6 +750,13 @@ public final class EditSessionBuilder {
         return changeSet;
     }
 
+    /**
+     * Get the SideEffectSet that will be used
+     */
+    public SideEffectSet getSideEffectSet() {
+        return sideEffectSet;
+    }
+
     /**
      * Get the ultimate resultant extent
      */

worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -1749,6 +1749,7 @@ public class LocalSession implements TextureHolder {
         }
         builder.command(command);
         builder.fastMode(!this.sideEffectSet.doesApplyAny());
+        builder.setSideEffectSet(this.sideEffectSet);
 
         editSession = builder.build();
 

worldedit-core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java

@@ -929,7 +929,7 @@ public class RegionCommands {
                         .getInstance()
                         .getPlatformManager()
                         .queryCapability(Capability.WORLD_EDITING)
-                        .getPlatformPlacementProcessor(editSession, null, true)
+                        .getPlatformPlacementProcessor(editSession, null, region)
         );
         if (affected != 0) {
             actor.print(Caption.of("worldedit.set.done", TextComponent.of(affected)));

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/Platform.java

@@ -19,16 +19,16 @@
 
 package com.sk89q.worldedit.extension.platform;
 
-import com.fastasyncworldedit.core.extent.processor.PlacementStateProcessor;
+import com.fastasyncworldedit.core.extent.PlacementStateProcessor;
 import com.fastasyncworldedit.core.extent.processor.lighting.Relighter;
 import com.fastasyncworldedit.core.extent.processor.lighting.RelighterFactory;
 import com.fastasyncworldedit.core.queue.IBatchProcessor;
 import com.sk89q.worldedit.LocalConfiguration;
-import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BlockTypeMask;
 import com.sk89q.worldedit.internal.util.NonAbstractForCompatibility;
+import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.registry.Keyed;
 import com.sk89q.worldedit.util.SideEffect;
 import com.sk89q.worldedit.util.io.ResourceLoader;
@@ -281,10 +281,12 @@ public interface Platform extends Keyed {
     }
 
     /**
-     * Returns an {@link PlacementStateProcessor} instance for processing placed blocks to "fix" them.
+     * Returns an {@link PlacementStateProcessor} instance for processing placed blocks to "fix" them. Optional region to
+     * prevent any changes outside of, as sometimes block neighbours will also be updated otherwise.
+     *
      * @since TODO
      */
-    default PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, boolean includeUnedited) {
+    default PlacementStateProcessor getPlatformPlacementProcessor(Extent extent, BlockTypeMask mask, @Nullable Region region) {
         return null;
     }
     //FAWE end

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/BlockTypeMask.java

@@ -21,6 +21,7 @@ package com.sk89q.worldedit.function.mask;
 
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
 
@@ -140,6 +141,10 @@ public class BlockTypeMask extends AbstractExtentMask {
     public boolean test(BlockType block) {
         return types[block.getInternalId()];
     }
+
+    public <B extends BlockStateHolder<B>> boolean test(B blockStateHolder) {
+        return types[blockStateHolder.getBlockType().getInternalId()];
+    }
     //FAWE end
 
     @Nullable
@@ -149,7 +154,7 @@ public class BlockTypeMask extends AbstractExtentMask {
     }
 
     @Override
-    public Mask copy() {
+    public BlockTypeMask copy() {
         return new BlockTypeMask(getExtent(), types.clone(), hasAir);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/SideEffect.java

@@ -19,23 +19,30 @@
 
 package com.sk89q.worldedit.util;
 
+import com.fastasyncworldedit.core.configuration.Settings;
+
 import java.util.Locale;
 
 public enum SideEffect {
-    LIGHTING(State.ON, true),
+    //FAWE start - adjust defaults, add history and heightmaps
-    NEIGHBORS(State.ON, true),
+    HISTORY(State.ON, true),
-    UPDATE(State.ON, true),
+    HEIGHTMAPS(State.ON, true),
+    LIGHTING(Settings.settings().LIGHTING.MODE == 0 ? State.OFF : State.ON, true),
+    NEIGHBORS(State.OFF, true),
+    UPDATE(State.OFF, true),
+    //FAWE end
     VALIDATION(State.OFF, true),
     ENTITY_AI(State.OFF, true),
     EVENTS(State.OFF, true),
     /**
      * Internal use only.
      */
-    POI_UPDATE(State.ON, false),
+    POI_UPDATE(State.OFF, false),
     /**
      * Internal use only.
      */
-    NETWORK(State.ON, false);
+    NETWORK(State.OFF, false);
+    //FAWE end
 
     private final String displayName;
     private final String description;