minecraft-src/net/minecraft/network/protocol/game/ClientboundMoveEntityPacket.java

package net.minecraft.network.protocol.game;

import net.minecraft.network.FriendlyByteBuf;
import net.minecraft.network.codec.StreamCodec;
import net.minecraft.network.protocol.Packet;
import net.minecraft.network.protocol.PacketType;
import net.minecraft.util.Mth;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.Level;
import org.jetbrains.annotations.Nullable;

public abstract class ClientboundMoveEntityPacket implements Packet<ClientGamePacketListener> {
	protected final int entityId;
	protected final short xa;
	protected final short ya;
	protected final short za;
	protected final byte yRot;
	protected final byte xRot;
	protected final boolean onGround;
	protected final boolean hasRot;
	protected final boolean hasPos;

	protected ClientboundMoveEntityPacket(int entityId, short xa, short ya, short za, byte yRot, byte xRot, boolean onGround, boolean hasRot, boolean hasPos) {
		this.entityId = entityId;
		this.xa = xa;
		this.ya = ya;
		this.za = za;
		this.yRot = yRot;
		this.xRot = xRot;
		this.onGround = onGround;
		this.hasRot = hasRot;
		this.hasPos = hasPos;
	}

	@Override
	public abstract PacketType<? extends ClientboundMoveEntityPacket> type();

	/**
	 * Passes this Packet on to the NetHandler for processing.
	 */
	public void handle(ClientGamePacketListener handler) {
		handler.handleMoveEntity(this);
	}

	public String toString() {
		return "Entity_" + super.toString();
	}

	@Nullable
	public Entity getEntity(Level level) {
		return level.getEntity(this.entityId);
	}

	public short getXa() {
		return this.xa;
	}

	public short getYa() {
		return this.ya;
	}

	public short getZa() {
		return this.za;
	}

	public float getYRot() {
		return Mth.unpackDegrees(this.yRot);
	}

	public float getXRot() {
		return Mth.unpackDegrees(this.xRot);
	}

	public boolean hasRotation() {
		return this.hasRot;
	}

	public boolean hasPosition() {
		return this.hasPos;
	}

	public boolean isOnGround() {
		return this.onGround;
	}

	public static class Pos extends ClientboundMoveEntityPacket {
		public static final StreamCodec<FriendlyByteBuf, ClientboundMoveEntityPacket.Pos> STREAM_CODEC = Packet.codec(
			ClientboundMoveEntityPacket.Pos::write, ClientboundMoveEntityPacket.Pos::read
		);

		public Pos(int entityId, short xa, short ya, short za, boolean onGround) {
			super(entityId, xa, ya, za, (byte)0, (byte)0, onGround, false, true);
		}

		private static ClientboundMoveEntityPacket.Pos read(FriendlyByteBuf buffer) {
			int i = buffer.readVarInt();
			short s = buffer.readShort();
			short t = buffer.readShort();
			short u = buffer.readShort();
			boolean bl = buffer.readBoolean();
			return new ClientboundMoveEntityPacket.Pos(i, s, t, u, bl);
		}

		/**
		 * Writes the raw packet data to the data stream.
		 */
		private void write(FriendlyByteBuf buffer) {
			buffer.writeVarInt(this.entityId);
			buffer.writeShort(this.xa);
			buffer.writeShort(this.ya);
			buffer.writeShort(this.za);
			buffer.writeBoolean(this.onGround);
		}

		@Override
		public PacketType<ClientboundMoveEntityPacket.Pos> type() {
			return GamePacketTypes.CLIENTBOUND_MOVE_ENTITY_POS;
		}
	}

	public static class PosRot extends ClientboundMoveEntityPacket {
		public static final StreamCodec<FriendlyByteBuf, ClientboundMoveEntityPacket.PosRot> STREAM_CODEC = Packet.codec(
			ClientboundMoveEntityPacket.PosRot::write, ClientboundMoveEntityPacket.PosRot::read
		);

		public PosRot(int entityId, short xa, short ya, short za, byte yRot, byte xRot, boolean onGround) {
			super(entityId, xa, ya, za, yRot, xRot, onGround, true, true);
		}

		private static ClientboundMoveEntityPacket.PosRot read(FriendlyByteBuf buffer) {
			int i = buffer.readVarInt();
			short s = buffer.readShort();
			short t = buffer.readShort();
			short u = buffer.readShort();
			byte b = buffer.readByte();
			byte c = buffer.readByte();
			boolean bl = buffer.readBoolean();
			return new ClientboundMoveEntityPacket.PosRot(i, s, t, u, b, c, bl);
		}

		/**
		 * Writes the raw packet data to the data stream.
		 */
		private void write(FriendlyByteBuf buffer) {
			buffer.writeVarInt(this.entityId);
			buffer.writeShort(this.xa);
			buffer.writeShort(this.ya);
			buffer.writeShort(this.za);
			buffer.writeByte(this.yRot);
			buffer.writeByte(this.xRot);
			buffer.writeBoolean(this.onGround);
		}

		@Override
		public PacketType<ClientboundMoveEntityPacket.PosRot> type() {
			return GamePacketTypes.CLIENTBOUND_MOVE_ENTITY_POS_ROT;
		}
	}

	public static class Rot extends ClientboundMoveEntityPacket {
		public static final StreamCodec<FriendlyByteBuf, ClientboundMoveEntityPacket.Rot> STREAM_CODEC = Packet.codec(
			ClientboundMoveEntityPacket.Rot::write, ClientboundMoveEntityPacket.Rot::read
		);

		public Rot(int entityId, byte yRot, byte xRot, boolean onGround) {
			super(entityId, (short)0, (short)0, (short)0, yRot, xRot, onGround, true, false);
		}

		private static ClientboundMoveEntityPacket.Rot read(FriendlyByteBuf buffer) {
			int i = buffer.readVarInt();
			byte b = buffer.readByte();
			byte c = buffer.readByte();
			boolean bl = buffer.readBoolean();
			return new ClientboundMoveEntityPacket.Rot(i, b, c, bl);
		}

		/**
		 * Writes the raw packet data to the data stream.
		 */
		private void write(FriendlyByteBuf buffer) {
			buffer.writeVarInt(this.entityId);
			buffer.writeByte(this.yRot);
			buffer.writeByte(this.xRot);
			buffer.writeBoolean(this.onGround);
		}

		@Override
		public PacketType<ClientboundMoveEntityPacket.Rot> type() {
			return GamePacketTypes.CLIENTBOUND_MOVE_ENTITY_ROT;
		}
	}
}