парсинг level.dat - LevelInfo

anvil-loader/src/main/java/mc/world/anvil/LevelInfo.java

@@ -0,0 +1,26 @@
+package mc.world.anvil;
+
+import com.flowpowered.nbt.*;
+import lombok.Getter;
+import lombok.ToString;
+import mc.core.world.block.BlockLocation;
+
+@Getter
+@ToString
+class LevelInfo {
+    private long seed;
+    private BlockLocation spawn;
+    private int version;
+
+    LevelInfo(CompoundTag levelDatTag) {
+        CompoundMap dataMapTag = ((CompoundTag) levelDatTag.getValue().get("Data")).getValue();
+
+        seed = ((LongTag) dataMapTag.get("RandomSeed")).getValue();
+        spawn = new BlockLocation(
+                ((IntTag) dataMapTag.get("SpawnX")).getValue(),
+                ((IntTag) dataMapTag.get("SpawnY")).getValue(),
+                ((IntTag) dataMapTag.get("SpawnZ")).getValue()
+        );
+        version = ((IntTag) dataMapTag.get("version")).getValue();
+    }
+}

anvil-loader/src/main/java/mc/world/anvil/Main.java

@@ -1,14 +1,29 @@
 package mc.world.anvil;
 
+import com.flowpowered.nbt.CompoundTag;
+import com.flowpowered.nbt.Tag;
+import com.flowpowered.nbt.stream.NBTInputStream;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.FileInputStream;
 import java.io.IOException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 
+@Slf4j
 public class Main {
     public static void main(String[] args) throws IOException {
-        final Path levelDatPath = Paths.get(args[0]);
+        final Path worldPath = Paths.get(args[0]);
 
-        RegionFile regionFile = new RegionFile(levelDatPath.toFile());
-        regionFile.getChunk(0,0);
+        // level.dat
+        FileInputStream fis = new FileInputStream(worldPath.resolve("level.dat").toFile());
+        NBTInputStream nbtInputStream = new NBTInputStream(fis);
+
+        Tag rootTag = nbtInputStream.readTag();
+        LevelInfo levelInfo = new LevelInfo((CompoundTag) rootTag);
+        nbtInputStream.close();
+        fis.close();
+
+        log.info(levelInfo.toString());
     }
 }