Sonar: [squid:S3776] make the method easier

proto_1.12.2/src/main/java/mc/core/network/proto_1_12_2/packets/serverside/ChunkDataPacket.java

@@ -17,6 +17,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 /*
 Packet structure
@@ -89,19 +90,13 @@ public class ChunkDataPacket implements SCPacket {
         this.sectionList = sectionList;
     }
 
-    @Override
-    public void writeSelf(NetOutputStream netStream) {
-        if (sectionList == null && chunk == null) {
-            log.warn("Empty chunk data!"); //TODO для такого нужна заглушка
-            return;
-        }
-
-        netStream.writeInt(x); // Chunk X
-        netStream.writeInt(z); // Chunk Y
-        netStream.writeBoolean(initChunk); // Init Chunk
-
+    /**
+     * @return max height chunk
+     */
+    private int calcAndWriteBitMask(NetOutputStream netStream) {
         int maxH = 0;
         int bitMask = 0;
+
         if (sectionList == null && chunk != null) {
             for (int h = 15; h >= 0; h--) {
                 bitMask = bitMask << 1;
@@ -126,28 +121,27 @@ public class ChunkDataPacket implements SCPacket {
                 }
             }
         }
+
         netStream.writeVarInt(bitMask); // Primary Bit Mask
 
-        try (ByteArrayOutputNetStream data = new ByteArrayOutputNetStream();
-             ByteArrayOutputNetStream biomes = new ByteArrayOutputNetStream()) {
-
-            boolean biomeWrite = true;
-
-            List<CompoundTag> nbtList = new ArrayList<>();
-
-            for (int h = 0; h < maxH; h++) {
-                ChunkSection chunkSection = null;
+        return maxH;
+    }
 
+    private ChunkSection getChunkSection(int h) {
         if (chunk != null) {
-                    chunkSection = chunk.getChunkSection(h);
+            return chunk.getChunkSection(h);
         } else if (sectionList != null) {
-                    chunkSection = sectionList.remove(0);
+            return sectionList.remove(0);
         }
 
-                if (chunkSection == null) {
-                    continue;
+        return null;
     }
 
+    private PalettedChunkSection createPalette(final ChunkSection chunkSection,
+                                               final List<CompoundTag> nbtList,
+                                               final AtomicBoolean biomeWrite,
+                                               final ByteArrayOutputNetStream biomes) {
+
         final PalettedChunkSection palettedChunkSection = new PalettedChunkSection();
 
         for (int y = 0; y < 16; y++) {
@@ -165,21 +159,51 @@ public class ChunkDataPacket implements SCPacket {
                         nbtList.add(nbt);
                     }
 
-                            if (biomeWrite) {
+                    if (biomeWrite.get()) {
                         biomes.writeByte(chunk.getBiome(
                                 (chunk.getX() << 4) + x,
                                 (chunk.getZ() << 4) + z
                         ).getId());
                         if (x == 15 && z == 15) {
-                                    biomeWrite = false;
+                            biomeWrite.set(false);
                         }
                     }
                 }
             }
         }
 
+        return palettedChunkSection;
+    }
+
+    @Override
+    public void writeSelf(NetOutputStream netStream) {
+        if (sectionList == null && chunk == null) {
+            log.warn("Empty chunk data!"); //TODO для такого нужна заглушка
+            return;
+        }
+
+        netStream.writeInt(x); // Chunk X
+        netStream.writeInt(z); // Chunk Y
+        netStream.writeBoolean(initChunk); // Init Chunk
+
+        final int maxH = calcAndWriteBitMask(netStream);
+
+        try (ByteArrayOutputNetStream data = new ByteArrayOutputNetStream();
+             ByteArrayOutputNetStream biomes = new ByteArrayOutputNetStream()) {
+
+            AtomicBoolean biomeWrite = new AtomicBoolean(true);
+
+            List<CompoundTag> nbtList = new ArrayList<>();
+
+            for (int h = 0; h < maxH; h++) {
+                final ChunkSection chunkSection = getChunkSection(h);
+                if (chunkSection == null) {
+                    continue;
+                }
+
                 // <Chunk Section>
-                palettedChunkSection.writeToNetStream(data);
+                createPalette(chunkSection, nbtList, biomeWrite, biomes)
+                        .writeToNetStream(data);
                 // </Chunk Section>
             }
             // <Biomes>