Fix fast schematic reader/writer

- Have both sponge and fast r/w available but default to "fast"
 - Correctly "offset" entities in the schematic, and add a legacy mode for loading old FAWE schematics with entities required.
 - Lazily reading means it's read in order of appearance in the inputstream so we need to read schematic version first (skip past everything) and then reset the stream. Fixes #740
 - Add an FAWEVersion to the metadata
 - Correctly actually return a BlockArrayClipboard when required. Fixes #454

worldedit-core/src/main/java/com/boydti/fawe/jnbt/streamer/StreamDelegate.java

@@ -200,7 +200,7 @@ public class StreamDelegate {
             Object raw = is.readTagPayloadRaw(type, depth);
             valueReader.apply(0, raw);
         } else {
-            is.readTagPaylodLazy(type, depth + 1, this);
+            is.readTagPayloadLazy(type, depth + 1, this);
         }
     }
 

worldedit-core/src/main/java/com/sk89q/jnbt/NBTInputStream.java

@@ -61,6 +61,14 @@ public final class NBTInputStream implements Closeable {
         this.is = dis;
     }
 
+    public void mark(int mark) {
+        is.mark(mark);
+    }
+
+    public void reset() throws IOException {
+        is.reset();
+    }
+
     /**
      * Reads an NBT tag from the stream.
      *
@@ -99,7 +107,7 @@ public final class NBTInputStream implements Closeable {
             if (child != null) {
                 child.acceptRoot(this, type, 0);
             } else {
-                readTagPaylodLazy(type, 0);
+                readTagPayloadLazy(type, 0);
             }
         } catch (Throwable e) {
             e.printStackTrace();
@@ -119,7 +127,7 @@ public final class NBTInputStream implements Closeable {
 
     private byte[] buf;
 
-    public void readTagPaylodLazy(int type, int depth) throws IOException {
+    public void readTagPayloadLazy(int type, int depth) throws IOException {
         switch (type) {
             case NBTConstants.TYPE_END:
                 return;
@@ -152,7 +160,7 @@ public final class NBTInputStream implements Closeable {
                 int childType = is.readByte();
                 length = is.readInt();
                 for (int i = 0; i < length; ++i) {
-                    readTagPaylodLazy(childType, depth + 1);
+                    readTagPayloadLazy(childType, depth + 1);
                 }
                 return;
             }
@@ -165,7 +173,7 @@ public final class NBTInputStream implements Closeable {
                         return;
                     }
                     is.skipBytes(is.readShort() & 0xFFFF);
-                    readTagPaylodLazy(childType, depth + 1);
+                    readTagPayloadLazy(childType, depth + 1);
                 }
             }
             case NBTConstants.TYPE_INT_ARRAY: {
@@ -181,7 +189,7 @@ public final class NBTInputStream implements Closeable {
         }
     }
 
-    public void readTagPaylodLazy(int type, int depth, StreamDelegate scope) throws IOException {
+    public void readTagPayloadLazy(int type, int depth, StreamDelegate scope) throws IOException {
         switch (type) {
             case NBTConstants.TYPE_END:
                 return;
@@ -293,11 +301,11 @@ public final class NBTInputStream implements Closeable {
                 child = scope.get0();
                 if (child == null) {
                     for (int i = 0; i < length; ++i) {
-                        readTagPaylodLazy(childType, depth + 1);
+                        readTagPayloadLazy(childType, depth + 1);
                     }
                 } else {
                     for (int i = 0; i < length; ++i) {
-                        readTagPaylodLazy(childType, depth + 1, child);
+                        readTagPayloadLazy(childType, depth + 1, child);
                     }
                 }
                 return;
@@ -330,9 +338,9 @@ public final class NBTInputStream implements Closeable {
                     }
                     StreamDelegate child = scope.get(is);
                     if (child == null) {
-                        readTagPaylodLazy(childType, depth + 1);
+                        readTagPayloadLazy(childType, depth + 1);
                     } else {
-                        readTagPaylodLazy(childType, depth + 1, child);
+                        readTagPayloadLazy(childType, depth + 1, child);
                     }
                 }
             }

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

@@ -147,7 +147,7 @@ public class SchematicCommands {
     @Deprecated
     @CommandPermissions({"worldedit.clipboard.load", "worldedit.schematic.load", "worldedit.schematic.load.web", "worldedit.schematic.load.asset"})
     public void loadall(Player player, LocalSession session,
-                        @Arg(desc = "Format name.", def = "schematic")
+                        @Arg(desc = "Format name.", def = "fast")
                             String formatName,
                         @Arg(desc = "File name.")
                             String filename,
@@ -223,7 +223,7 @@ public class SchematicCommands {
     public void load(Actor actor, LocalSession session,
                      @Arg(desc = "File name.")
                          String filename,
-                     @Arg(desc = "Format name.", def = "sponge")
+                     @Arg(desc = "Format name.", def = "fast")
                          String formatName) throws FilenameException {
         LocalConfiguration config = worldEdit.getConfiguration();
 
@@ -323,7 +323,7 @@ public class SchematicCommands {
     public void save(Actor actor, LocalSession session,
                      @Arg(desc = "File name.")
                          String filename,
-                     @Arg(desc = "Format name.", def = "sponge")
+                     @Arg(desc = "Format name.", def = "fast")
                          String formatName,
                      @Switch(name = 'f', desc = "Overwrite an existing file.")
                          boolean allowOverwrite,

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/BuiltInClipboardFormat.java

@@ -24,8 +24,11 @@ import com.boydti.fawe.object.io.ResettableFileInputStream;
 import com.boydti.fawe.object.schematic.MinecraftStructure;
 import com.boydti.fawe.object.schematic.PNGWriter;
 import com.google.common.collect.ImmutableSet;
+import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.NBTInputStream;
 import com.sk89q.jnbt.NBTOutputStream;
+import com.sk89q.jnbt.NamedTag;
+import com.sk89q.jnbt.Tag;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
@@ -35,6 +38,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.Locale;
+import java.util.Map;
 import java.util.Set;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.GZIPOutputStream;
@@ -44,6 +48,44 @@ import java.util.zip.GZIPOutputStream;
  */
 public enum BuiltInClipboardFormat implements ClipboardFormat {
 
+    FAST("fast", "fawe") {
+
+        @Override
+        public String getPrimaryFileExtension() {
+            return "schem";
+        }
+
+        @Override
+        public ClipboardReader getReader(InputStream inputStream) throws IOException {
+            if (inputStream instanceof FileInputStream) {
+                inputStream = new ResettableFileInputStream((FileInputStream) inputStream);
+            }
+            BufferedInputStream buffered = new BufferedInputStream(inputStream);
+            NBTInputStream nbtStream = new NBTInputStream(new BufferedInputStream(new GZIPInputStream(buffered)));
+            return new FastSchematicReader(nbtStream);
+        }
+
+        @Override
+        public ClipboardWriter getWriter(OutputStream outputStream) throws IOException {
+            OutputStream gzip;
+            if (outputStream instanceof PGZIPOutputStream || outputStream instanceof GZIPOutputStream) {
+                gzip = outputStream;
+            } else {
+                outputStream = new BufferedOutputStream(outputStream);
+                gzip = new PGZIPOutputStream(outputStream);
+            }
+            NBTOutputStream nbtStream = new NBTOutputStream(new BufferedOutputStream(gzip));
+            return new FastSchematicWriter(nbtStream);
+        }
+
+        @Override
+        public boolean isFormat(File file) {
+            String name = file.getName().toLowerCase(Locale.ROOT);
+            return name.endsWith(".schem") || name.endsWith(".sponge");
+        }
+
+    },
+
     /**
      * The Schematic format used by MCEdit.
      */
@@ -77,8 +119,49 @@ public enum BuiltInClipboardFormat implements ClipboardFormat {
             return name.endsWith(".schematic") || name.endsWith(".mcedit") || name.endsWith(".mce");
         }
     },
+
     SPONGE_SCHEMATIC("sponge", "schem") {
 
+        @Override
+        public String getPrimaryFileExtension() {
+            return "schem";
+        }
+        @Override
+        public ClipboardReader getReader(InputStream inputStream) throws IOException {
+            NBTInputStream nbtStream = new NBTInputStream(new GZIPInputStream(inputStream));
+            return new SpongeSchematicReader(nbtStream);
+        }
+
+        @Override
+        public ClipboardWriter getWriter(OutputStream outputStream) throws IOException {
+            NBTOutputStream nbtStream = new NBTOutputStream(new GZIPOutputStream(outputStream));
+            return new SpongeSchematicWriter(nbtStream);
+        }
+
+        @Override
+        public boolean isFormat(File file) {
+            try (NBTInputStream str = new NBTInputStream(new GZIPInputStream(new FileInputStream(file)))) {
+                NamedTag rootTag = str.readNamedTag();
+                if (!rootTag.getName().equals("Schematic")) {
+                    return false;
+                }
+                CompoundTag schematicTag = (CompoundTag) rootTag.getTag();
+
+                // Check
+                Map<String, Tag> schematic = schematicTag.getValue();
+                if (!schematic.containsKey("Version")) {
+                    return false;
+                }
+            } catch (Exception e) {
+                return false;
+            }
+
+            return true;
+        }
+    },
+
+    BROKENENTITY("brokenentity", "legacyentity", "le", "be", "brokenentities", "legacyentities") {
+
         @Override
         public String getPrimaryFileExtension() {
             return "schem";
@@ -91,7 +174,9 @@ public enum BuiltInClipboardFormat implements ClipboardFormat {
             }
             BufferedInputStream buffered = new BufferedInputStream(inputStream);
             NBTInputStream nbtStream = new NBTInputStream(new BufferedInputStream(new GZIPInputStream(buffered)));
-            return new FastSchematicReader(nbtStream);
+            FastSchematicReader reader = new FastSchematicReader(nbtStream);
+            reader.setBrokenEntities(true);
+            return reader;
         }
 
         @Override
@@ -104,13 +189,14 @@ public enum BuiltInClipboardFormat implements ClipboardFormat {
                 gzip = new PGZIPOutputStream(outputStream);
             }
             NBTOutputStream nbtStream = new NBTOutputStream(new BufferedOutputStream(gzip));
-            return new FastSchematicWriter(nbtStream);
+            FastSchematicWriter writer = new FastSchematicWriter(nbtStream);
+            writer.setBrokenEntities(true);
+            return writer;
         }
 
         @Override
         public boolean isFormat(File file) {
-            String name = file.getName().toLowerCase(Locale.ROOT);
+            return false;
-            return name.endsWith(".schem") || name.endsWith(".sponge");
         }
 
     },

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/FastSchematicReader.java

@@ -30,10 +30,12 @@ import com.boydti.fawe.object.io.FastByteArraysInputStream;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.IntTag;
 import com.sk89q.jnbt.NBTInputStream;
+import com.sk89q.jnbt.NamedTag;
 import com.sk89q.jnbt.StringTag;
 import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.BaseEntity;
+import com.sk89q.worldedit.entity.Entity;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
@@ -45,6 +47,7 @@ import com.sk89q.worldedit.world.DataFixer;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
 import com.sk89q.worldedit.world.entity.EntityType;
 import com.sk89q.worldedit.world.entity.EntityTypes;
@@ -58,6 +61,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.OptionalInt;
 import java.util.UUID;
 import java.util.function.Function;
 
@@ -70,9 +74,10 @@ public class FastSchematicReader extends NBTSchematicReader {
 
     private static final Logger log = LoggerFactory.getLogger(FastSchematicReader.class);
     private final NBTInputStream inputStream;
-    private DataFixer fixer = null;
+    private DataFixer fixer;
     private int dataVersion = -1;
     private int version = -1;
+    private int faweWritten = -1;
 
     private FastByteArrayOutputStream blocksOut;
     private FaweOutputStream blocks;
@@ -92,6 +97,7 @@ public class FastSchematicReader extends NBTSchematicReader {
     private char[] palette;
     private char[] biomePalette;
     private BlockVector3 min = BlockVector3.ZERO;
+    private boolean brokenEntities = false;
 
 
     /**
@@ -105,6 +111,10 @@ public class FastSchematicReader extends NBTSchematicReader {
         this.fixer = WorldEdit.getInstance().getPlatformManager().queryCapability(Capability.WORLD_EDITING).getDataFixer();
     }
 
+    public void setBrokenEntities(boolean brokenEntities) {
+        this.brokenEntities = brokenEntities;
+    }
+
     private String fix(String palettePart) {
         if (fixer == null || dataVersion == -1) {
             return palettePart;
@@ -133,7 +143,7 @@ public class FastSchematicReader extends NBTSchematicReader {
         return fixer.fixUp(DataFixer.FixTypes.BIOME, biomePalettePart, dataVersion);
     }
 
-    public StreamDelegate createDelegate() {
+    public StreamDelegate createVersionDelegate() {
         StreamDelegate root = new StreamDelegate();
         StreamDelegate schematic = root.add("Schematic");
         schematic.add("DataVersion").withInt((i, v) -> dataVersion = v);
@@ -143,6 +153,12 @@ public class FastSchematicReader extends NBTSchematicReader {
                 dataVersion = Constants.DATA_VERSION_MC_1_13_2;
             }
         });
+        return root;
+    }
+
+    public StreamDelegate createDelegate() {
+        StreamDelegate root = new StreamDelegate();
+        StreamDelegate schematic = root.add("Schematic");
         schematic.add("Width").withInt((i, v) -> width = v);
         schematic.add("Height").withInt((i, v) -> height = v);
         schematic.add("Length").withInt((i, v) -> length = v);
@@ -152,17 +168,19 @@ public class FastSchematicReader extends NBTSchematicReader {
         metadata.add("WEOffsetX").withInt((i, v) -> offsetX = v);
         metadata.add("WEOffsetY").withInt((i, v) -> offsetY = v);
         metadata.add("WEOffsetZ").withInt((i, v) -> offsetZ = v);
+        metadata.add("FAWEVersion").withInt((i, v) -> faweWritten = v);
 
         StreamDelegate paletteDelegate = schematic.add("Palette");
         paletteDelegate.withValue((ValueReader<Map<String, Object>>) (ignore, v) -> {
             palette = new char[v.size()];
             for (Entry<String, Object> entry : v.entrySet()) {
-                BlockState state = null;
+                BlockState state;
+                String palettePart = fix(entry.getKey());
                 try {
-                    String palettePart = fix(entry.getKey());
                     state = BlockState.get(palettePart);
-                } catch (InputParseException e) {
+                } catch (InputParseException ignored) {
-                    e.printStackTrace();
+                    log.warn("Invalid BlockState in palette: " + palettePart + ". Block will be replaced with air.");
+                    state = BlockTypes.AIR.getDefaultState();
                 }
                 int index = (int) entry.getValue();
                 palette[index] = (char) state.getOrdinal();
@@ -224,10 +242,14 @@ public class FastSchematicReader extends NBTSchematicReader {
     @Override
     public Clipboard read(UUID uuid, Function<BlockVector3, Clipboard> createOutput) throws IOException {
         StreamDelegate root = createDelegate();
+        StreamDelegate versions = createVersionDelegate();
+        inputStream.mark(Integer.MAX_VALUE);
+        inputStream.readNamedTagLazy(versions);
+        inputStream.reset();
         inputStream.readNamedTagLazy(root);
 
         if (version != 1 && version != 2) {
-            throw new IOException("This schematic version is currently not supported");
+            throw new IOException("This schematic version is currently not supported (" + version + ")");
         }
 
         if (blocks != null) {
@@ -240,9 +262,11 @@ public class FastSchematicReader extends NBTSchematicReader {
         biomes = null;
 
         BlockVector3 dimensions = BlockVector3.at(width, height, length);
-        BlockVector3 origin = BlockVector3.ZERO;
+        BlockVector3 origin;
         if (offsetX != Integer.MIN_VALUE && offsetY != Integer.MIN_VALUE  && offsetZ != Integer.MIN_VALUE) {
             origin = BlockVector3.at(-offsetX, -offsetY, -offsetZ);
+        } else {
+            origin = BlockVector3.ZERO;
         }
 
         Clipboard clipboard = createOutput.apply(dimensions);
@@ -352,7 +376,7 @@ public class FastSchematicReader extends NBTSchematicReader {
                 if (id == null) {
                     id = (StringTag) value.get("id");
                     if (id == null) {
-                        return null;
+                        continue;
                     }
                 }
                 value.put("id", id);
@@ -363,7 +387,26 @@ public class FastSchematicReader extends NBTSchematicReader {
                     ent = fixEntity(ent);
                     BaseEntity state = new BaseEntity(type, ent);
                     Location loc = ent.getEntityLocation(clipboard);
-                    clipboard.createEntity(loc, state);
+                    if (brokenEntities) {
+                        clipboard.createEntity(loc, state);
+                        continue;
+                    }
+                    if (faweWritten == -1) {
+                        int locX = loc.getBlockX();
+                        int locY = loc.getBlockY();
+                        int locZ = loc.getBlockZ();
+                        BlockVector3 max = min.add(dimensions).subtract(BlockVector3.ONE);
+                        if (locX < min.getX() || locY < min.getY() || locZ < min.getZ()
+                            || locX > max.getX() || locY > max.getY() || locZ > max.getZ()) {
+                            for (Entity e : clipboard.getEntities()) {
+                                clipboard.removeEntity(e);
+                            }
+                            log.error("Detected schematic entity outside clipboard region. FAWE will not load entities. "
+                                + "Please try loading the schematic with the format \"legacyentity\"");
+                            break;
+                        }
+                    }
+                    clipboard.createEntity(loc.setPosition(loc.subtract(min.toVector3())), state);
                 } else {
                     log.debug("Invalid entity: " + id);
                 }
@@ -372,7 +415,7 @@ public class FastSchematicReader extends NBTSchematicReader {
         clipboard.setOrigin(origin);
 
         if (!min.equals(BlockVector3.ZERO)) {
-            new BlockArrayClipboard(clipboard, min);
+            clipboard = new BlockArrayClipboard(clipboard, min);
         }
 
         return clipboard;

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/FastSchematicWriter.java

@@ -19,10 +19,10 @@
 
 package com.sk89q.worldedit.extent.clipboard.io;
 
+import com.boydti.fawe.Fawe;
 import com.boydti.fawe.jnbt.streamer.IntValueReader;
 import com.boydti.fawe.object.FaweOutputStream;
 import com.boydti.fawe.util.IOUtil;
-import com.google.common.collect.Maps;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.jnbt.IntArrayTag;
 import com.sk89q.jnbt.ListTag;
@@ -39,6 +39,7 @@ import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.visitor.Order;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.biome.BiomeTypes;
 import com.sk89q.worldedit.world.block.BaseBlock;
@@ -58,8 +59,6 @@ import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
-import java.util.Objects;
-import java.util.stream.Collectors;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -72,6 +71,7 @@ public class FastSchematicWriter implements ClipboardWriter {
 
     private static final int MAX_SIZE = Short.MAX_VALUE - Short.MIN_VALUE;
     private final NBTOutputStream outputStream;
+    private boolean brokenEntities = false;
 
     /**
      * Create a new schematic writer.
@@ -83,6 +83,10 @@ public class FastSchematicWriter implements ClipboardWriter {
         this.outputStream = outputStream;
     }
 
+    public void setBrokenEntities(boolean brokenEntities) {
+        this.brokenEntities = brokenEntities;
+    }
+
     @Override
     public void write(Clipboard clipboard) throws IOException {
         // For now always write the latest version. Maybe provide support for earlier if more appear.
@@ -132,6 +136,7 @@ public class FastSchematicWriter implements ClipboardWriter {
                 out1.writeNamedTag("WEOffsetX", offset.getBlockX());
                 out1.writeNamedTag("WEOffsetY", offset.getBlockY());
                 out1.writeNamedTag("WEOffsetZ", offset.getBlockZ());
+                out1.writeNamedTag("FAWEVersion", Fawe.get().getVersion().build);
             });
 
             ByteArrayOutputStream blocksCompressed = new ByteArrayOutputStream();
@@ -240,8 +245,12 @@ public class FastSchematicWriter implements ClipboardWriter {
 
                     // Store our location data, overwriting any
                     values.remove("id");
+                    Location loc = entity.getLocation();
+                    if (!brokenEntities) {
+                        loc = loc.setPosition(loc.add(min.toVector3()));
+                    }
                     values.put("Id", new StringTag(state.getType().getId()));
-                    values.put("Pos", writeVector(entity.getLocation()));
+                    values.put("Pos", writeVector(loc));
                     values.put("Rotation", writeRotation(entity.getLocation()));
 
                     CompoundTag entityTag = new CompoundTag(values);
@@ -311,30 +320,6 @@ public class FastSchematicWriter implements ClipboardWriter {
         }
     }
 
-    private void writeEntities(Clipboard clipboard, NBTOutputStream schematic) throws IOException {
-        List<CompoundTag> entities = clipboard.getEntities().stream().map(e -> {
-            BaseEntity state = e.getState();
-            if (state == null) {
-                return null;
-            }
-            Map<String, Tag> values = Maps.newHashMap();
-            CompoundTag rawData = state.getNbtData();
-            if (rawData != null) {
-                values.putAll(rawData.getValue());
-            }
-            values.remove("id");
-            values.put("Id", new StringTag(state.getType().getId()));
-            values.put("Pos", writeVector(e.getLocation().toVector()));
-            values.put("Rotation", writeRotation(e.getLocation()));
-
-            return new CompoundTag(values);
-        }).filter(Objects::nonNull).collect(Collectors.toList());
-        if (entities.isEmpty()) {
-            return;
-        }
-        schematic.writeNamedTag("Entities", new ListTag(CompoundTag.class, entities));
-    }
-
     @Override
     public void close() throws IOException {
         outputStream.close();

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/SchematicReader.java

@@ -378,7 +378,7 @@ public class SchematicReader implements ClipboardReader {
 
         BlockVector3 min = BlockVector3.at(originX, originY, originZ);
         if (!min.equals(BlockVector3.ZERO)) {
-            new BlockArrayClipboard(clipboard, min);
+            clipboard = new BlockArrayClipboard(clipboard, min);
         }
         return clipboard;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/SpongeSchematicWriter.java

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldedit.extent.clipboard.io;
 
+import com.boydti.fawe.Fawe;
 import com.google.common.collect.Maps;
 import com.sk89q.jnbt.ByteArrayTag;
 import com.sk89q.jnbt.CompoundTag;
@@ -114,6 +115,7 @@ public class SpongeSchematicWriter implements ClipboardWriter {
         metadata.put("WEOffsetX", new IntTag(offset.getBlockX()));
         metadata.put("WEOffsetY", new IntTag(offset.getBlockY()));
         metadata.put("WEOffsetZ", new IntTag(offset.getBlockZ()));
+        metadata.put("FAWEVersion", new IntTag(Fawe.get().getVersion().build));
 
         schematic.put("Metadata", new CompoundTag(metadata));