hytale-server/com/hypixel/hytale/protocol/packets/interface_/UpdateVisibleHudComponents.java

package com.hypixel.hytale.protocol.packets.interface_;

import com.hypixel.hytale.protocol.Packet;
import com.hypixel.hytale.protocol.io.ProtocolException;
import com.hypixel.hytale.protocol.io.ValidationResult;
import com.hypixel.hytale.protocol.io.VarInt;
import io.netty.buffer.ByteBuf;
import java.util.Arrays;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class UpdateVisibleHudComponents implements Packet {
   public static final int PACKET_ID = 230;
   public static final boolean IS_COMPRESSED = false;
   public static final int NULLABLE_BIT_FIELD_SIZE = 1;
   public static final int FIXED_BLOCK_SIZE = 1;
   public static final int VARIABLE_FIELD_COUNT = 1;
   public static final int VARIABLE_BLOCK_START = 1;
   public static final int MAX_SIZE = 4096006;
   @Nullable
   public HudComponent[] visibleComponents;

   @Override
   public int getId() {
      return 230;
   }

   public UpdateVisibleHudComponents() {
   }

   public UpdateVisibleHudComponents(@Nullable HudComponent[] visibleComponents) {
      this.visibleComponents = visibleComponents;
   }

   public UpdateVisibleHudComponents(@Nonnull UpdateVisibleHudComponents other) {
      this.visibleComponents = other.visibleComponents;
   }

   @Nonnull
   public static UpdateVisibleHudComponents deserialize(@Nonnull ByteBuf buf, int offset) {
      UpdateVisibleHudComponents obj = new UpdateVisibleHudComponents();
      byte nullBits = buf.getByte(offset);
      int pos = offset + 1;
      if ((nullBits & 1) != 0) {
         int visibleComponentsCount = VarInt.peek(buf, pos);
         if (visibleComponentsCount < 0) {
            throw ProtocolException.negativeLength("VisibleComponents", visibleComponentsCount);
         }

         if (visibleComponentsCount > 4096000) {
            throw ProtocolException.arrayTooLong("VisibleComponents", visibleComponentsCount, 4096000);
         }

         int visibleComponentsVarLen = VarInt.size(visibleComponentsCount);
         if (pos + visibleComponentsVarLen + visibleComponentsCount * 1L > buf.readableBytes()) {
            throw ProtocolException.bufferTooSmall("VisibleComponents", pos + visibleComponentsVarLen + visibleComponentsCount * 1, buf.readableBytes());
         }

         pos += visibleComponentsVarLen;
         obj.visibleComponents = new HudComponent[visibleComponentsCount];

         for (int i = 0; i < visibleComponentsCount; i++) {
            obj.visibleComponents[i] = HudComponent.fromValue(buf.getByte(pos));
            pos++;
         }
      }

      return obj;
   }

   public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
      byte nullBits = buf.getByte(offset);
      int pos = offset + 1;
      if ((nullBits & 1) != 0) {
         int arrLen = VarInt.peek(buf, pos);
         pos += VarInt.length(buf, pos) + arrLen * 1;
      }

      return pos - offset;
   }

   @Override
   public void serialize(@Nonnull ByteBuf buf) {
      byte nullBits = 0;
      if (this.visibleComponents != null) {
         nullBits = (byte)(nullBits | 1);
      }

      buf.writeByte(nullBits);
      if (this.visibleComponents != null) {
         if (this.visibleComponents.length > 4096000) {
            throw ProtocolException.arrayTooLong("VisibleComponents", this.visibleComponents.length, 4096000);
         }

         VarInt.write(buf, this.visibleComponents.length);

         for (HudComponent item : this.visibleComponents) {
            buf.writeByte(item.getValue());
         }
      }
   }

   @Override
   public int computeSize() {
      int size = 1;
      if (this.visibleComponents != null) {
         size += VarInt.size(this.visibleComponents.length) + this.visibleComponents.length * 1;
      }

      return size;
   }

   public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
      if (buffer.readableBytes() - offset < 1) {
         return ValidationResult.error("Buffer too small: expected at least 1 bytes");
      } else {
         byte nullBits = buffer.getByte(offset);
         int pos = offset + 1;
         if ((nullBits & 1) != 0) {
            int visibleComponentsCount = VarInt.peek(buffer, pos);
            if (visibleComponentsCount < 0) {
               return ValidationResult.error("Invalid array count for VisibleComponents");
            }

            if (visibleComponentsCount > 4096000) {
               return ValidationResult.error("VisibleComponents exceeds max length 4096000");
            }

            pos += VarInt.length(buffer, pos);
            pos += visibleComponentsCount * 1;
            if (pos > buffer.writerIndex()) {
               return ValidationResult.error("Buffer overflow reading VisibleComponents");
            }
         }

         return ValidationResult.OK;
      }
   }

   public UpdateVisibleHudComponents clone() {
      UpdateVisibleHudComponents copy = new UpdateVisibleHudComponents();
      copy.visibleComponents = this.visibleComponents != null ? Arrays.copyOf(this.visibleComponents, this.visibleComponents.length) : null;
      return copy;
   }

   @Override
   public boolean equals(Object obj) {
      if (this == obj) {
         return true;
      } else {
         return obj instanceof UpdateVisibleHudComponents other ? Arrays.equals((Object[])this.visibleComponents, (Object[])other.visibleComponents) : false;
      }
   }

   @Override
   public int hashCode() {
      int result = 1;
      return 31 * result + Arrays.hashCode((Object[])this.visibleComponents);
   }
}