255 lines
8.5 KiB
Java
255 lines
8.5 KiB
Java
package com.hypixel.hytale.protocol.packets.entities;
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import com.hypixel.hytale.protocol.AnimationSlot;
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import com.hypixel.hytale.protocol.Packet;
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import com.hypixel.hytale.protocol.io.PacketIO;
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import com.hypixel.hytale.protocol.io.ProtocolException;
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import com.hypixel.hytale.protocol.io.ValidationResult;
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import com.hypixel.hytale.protocol.io.VarInt;
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import io.netty.buffer.ByteBuf;
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import java.util.Objects;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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public class PlayAnimation implements Packet {
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public static final int PACKET_ID = 162;
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public static final boolean IS_COMPRESSED = false;
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public static final int NULLABLE_BIT_FIELD_SIZE = 1;
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public static final int FIXED_BLOCK_SIZE = 6;
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public static final int VARIABLE_FIELD_COUNT = 2;
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public static final int VARIABLE_BLOCK_START = 14;
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public static final int MAX_SIZE = 32768024;
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public int entityId;
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@Nullable
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public String itemAnimationsId;
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@Nullable
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public String animationId;
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@Nonnull
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public AnimationSlot slot = AnimationSlot.Movement;
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@Override
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public int getId() {
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return 162;
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}
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public PlayAnimation() {
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}
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public PlayAnimation(int entityId, @Nullable String itemAnimationsId, @Nullable String animationId, @Nonnull AnimationSlot slot) {
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this.entityId = entityId;
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this.itemAnimationsId = itemAnimationsId;
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this.animationId = animationId;
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this.slot = slot;
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}
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public PlayAnimation(@Nonnull PlayAnimation other) {
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this.entityId = other.entityId;
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this.itemAnimationsId = other.itemAnimationsId;
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this.animationId = other.animationId;
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this.slot = other.slot;
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}
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@Nonnull
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public static PlayAnimation deserialize(@Nonnull ByteBuf buf, int offset) {
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PlayAnimation obj = new PlayAnimation();
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byte nullBits = buf.getByte(offset);
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obj.entityId = buf.getIntLE(offset + 1);
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obj.slot = AnimationSlot.fromValue(buf.getByte(offset + 5));
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if ((nullBits & 1) != 0) {
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int varPos0 = offset + 14 + buf.getIntLE(offset + 6);
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int itemAnimationsIdLen = VarInt.peek(buf, varPos0);
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if (itemAnimationsIdLen < 0) {
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throw ProtocolException.negativeLength("ItemAnimationsId", itemAnimationsIdLen);
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}
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if (itemAnimationsIdLen > 4096000) {
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throw ProtocolException.stringTooLong("ItemAnimationsId", itemAnimationsIdLen, 4096000);
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}
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obj.itemAnimationsId = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
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}
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if ((nullBits & 2) != 0) {
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int varPos1 = offset + 14 + buf.getIntLE(offset + 10);
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int animationIdLen = VarInt.peek(buf, varPos1);
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if (animationIdLen < 0) {
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throw ProtocolException.negativeLength("AnimationId", animationIdLen);
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}
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if (animationIdLen > 4096000) {
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throw ProtocolException.stringTooLong("AnimationId", animationIdLen, 4096000);
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}
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obj.animationId = PacketIO.readVarString(buf, varPos1, PacketIO.UTF8);
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}
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return obj;
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}
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public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
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byte nullBits = buf.getByte(offset);
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int maxEnd = 14;
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if ((nullBits & 1) != 0) {
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int fieldOffset0 = buf.getIntLE(offset + 6);
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int pos0 = offset + 14 + fieldOffset0;
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int sl = VarInt.peek(buf, pos0);
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pos0 += VarInt.length(buf, pos0) + sl;
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if (pos0 - offset > maxEnd) {
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maxEnd = pos0 - offset;
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}
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}
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if ((nullBits & 2) != 0) {
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int fieldOffset1 = buf.getIntLE(offset + 10);
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int pos1 = offset + 14 + fieldOffset1;
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int sl = VarInt.peek(buf, pos1);
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pos1 += VarInt.length(buf, pos1) + sl;
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if (pos1 - offset > maxEnd) {
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maxEnd = pos1 - offset;
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}
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}
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return maxEnd;
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}
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@Override
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public void serialize(@Nonnull ByteBuf buf) {
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int startPos = buf.writerIndex();
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byte nullBits = 0;
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if (this.itemAnimationsId != null) {
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nullBits = (byte)(nullBits | 1);
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}
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if (this.animationId != null) {
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nullBits = (byte)(nullBits | 2);
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}
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buf.writeByte(nullBits);
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buf.writeIntLE(this.entityId);
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buf.writeByte(this.slot.getValue());
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int itemAnimationsIdOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int animationIdOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int varBlockStart = buf.writerIndex();
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if (this.itemAnimationsId != null) {
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buf.setIntLE(itemAnimationsIdOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.itemAnimationsId, 4096000);
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} else {
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buf.setIntLE(itemAnimationsIdOffsetSlot, -1);
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}
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if (this.animationId != null) {
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buf.setIntLE(animationIdOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.animationId, 4096000);
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} else {
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buf.setIntLE(animationIdOffsetSlot, -1);
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}
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}
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@Override
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public int computeSize() {
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int size = 14;
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if (this.itemAnimationsId != null) {
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size += PacketIO.stringSize(this.itemAnimationsId);
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}
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if (this.animationId != null) {
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size += PacketIO.stringSize(this.animationId);
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}
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return size;
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}
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public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
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if (buffer.readableBytes() - offset < 14) {
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return ValidationResult.error("Buffer too small: expected at least 14 bytes");
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} else {
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byte nullBits = buffer.getByte(offset);
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if ((nullBits & 1) != 0) {
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int itemAnimationsIdOffset = buffer.getIntLE(offset + 6);
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if (itemAnimationsIdOffset < 0) {
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return ValidationResult.error("Invalid offset for ItemAnimationsId");
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}
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int pos = offset + 14 + itemAnimationsIdOffset;
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if (pos >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for ItemAnimationsId");
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}
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int itemAnimationsIdLen = VarInt.peek(buffer, pos);
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if (itemAnimationsIdLen < 0) {
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return ValidationResult.error("Invalid string length for ItemAnimationsId");
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}
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if (itemAnimationsIdLen > 4096000) {
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return ValidationResult.error("ItemAnimationsId exceeds max length 4096000");
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}
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pos += VarInt.length(buffer, pos);
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pos += itemAnimationsIdLen;
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if (pos > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading ItemAnimationsId");
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}
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}
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if ((nullBits & 2) != 0) {
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int animationIdOffset = buffer.getIntLE(offset + 10);
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if (animationIdOffset < 0) {
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return ValidationResult.error("Invalid offset for AnimationId");
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}
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int posx = offset + 14 + animationIdOffset;
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if (posx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for AnimationId");
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}
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int animationIdLen = VarInt.peek(buffer, posx);
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if (animationIdLen < 0) {
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return ValidationResult.error("Invalid string length for AnimationId");
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}
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if (animationIdLen > 4096000) {
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return ValidationResult.error("AnimationId exceeds max length 4096000");
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}
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posx += VarInt.length(buffer, posx);
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posx += animationIdLen;
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if (posx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading AnimationId");
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}
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}
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return ValidationResult.OK;
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}
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}
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public PlayAnimation clone() {
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PlayAnimation copy = new PlayAnimation();
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copy.entityId = this.entityId;
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copy.itemAnimationsId = this.itemAnimationsId;
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copy.animationId = this.animationId;
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copy.slot = this.slot;
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return copy;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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} else {
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return !(obj instanceof PlayAnimation other)
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? false
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: this.entityId == other.entityId
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&& Objects.equals(this.itemAnimationsId, other.itemAnimationsId)
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&& Objects.equals(this.animationId, other.animationId)
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&& Objects.equals(this.slot, other.slot);
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}
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}
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@Override
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public int hashCode() {
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return Objects.hash(this.entityId, this.itemAnimationsId, this.animationId, this.slot);
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}
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}
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