Created PaletteStorage#clean

src/main/java/net/minestom/server/benchmark/BenchmarkManager.java

@@ -91,7 +91,7 @@ public final class BenchmarkManager {
     }
 
     /**
-     * Gets the memory used by the server in bytes.
+     * Gets the heap memory used by the server in bytes.
      *
      * @return the memory used by the server
      */

src/main/java/net/minestom/server/entity/Entity.java

@@ -181,7 +181,7 @@ public abstract class Entity implements Viewable, EventHandler, DataContainer, P
     /**
      * Called each tick.
      *
-     * @param time the time of update in milliseconds
+     * @param time time of the update in milliseconds
      */
     public abstract void update(long time);
 

src/main/java/net/minestom/server/instance/palette/PaletteStorage.java

@@ -112,6 +112,33 @@ public class PaletteStorage {
         return sectionBlocks;
     }
 
+    /**
+     * Loops through all the sections and blocks to find unused array (empty chunk section)
+     * <p>
+     * Useful after clearing one or multiple sections of a chunk. Can be unnecessarily expensive if the chunk
+     * is composed of almost-empty sections since the loop will not stop until a non-air block is discovered.
+     */
+    public synchronized void clean() {
+        for (int i = 0; i < sectionBlocks.length; i++) {
+            long[] section = sectionBlocks[i];
+
+            if (section.length != 0) {
+                boolean canClear = true;
+                for (long blockGroup : section) {
+                    if (blockGroup != 0) {
+                        canClear = false;
+                        break;
+                    }
+                }
+                if (canClear) {
+                    sectionBlocks[i] = new long[0];
+                }
+
+            }
+
+        }
+    }
+
     public PaletteStorage copy() {
         PaletteStorage paletteStorage = new PaletteStorage(bitsPerEntry, bitsIncrement);
         paletteStorage.sectionBlocks = sectionBlocks.clone();

src/main/java/net/minestom/server/network/PacketProcessor.java

@@ -149,7 +149,7 @@ public final class PacketProcessor {
      * @param reader     the buffer containing the packet
      */
     private void safeRead(@NotNull PlayerConnection connection, @NotNull Readable readable, @NotNull BinaryReader reader) {
-        final int readableBytes = reader.getBuffer().readableBytes();
+        final int readableBytes = reader.available();
 
         // Check if there is anything to read
         if (readableBytes == 0) {