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.world.entity.Entity;
import net.minecraft.world.level.Level;
import org.jetbrains.annotations.Nullable;

public class ClientboundSetCameraPacket implements Packet<ClientGamePacketListener> {
	public static final StreamCodec<FriendlyByteBuf, ClientboundSetCameraPacket> STREAM_CODEC = Packet.codec(
		ClientboundSetCameraPacket::write, ClientboundSetCameraPacket::new
	);
	private final int cameraId;

	public ClientboundSetCameraPacket(Entity cameraEntity) {
		this.cameraId = cameraEntity.getId();
	}

	private ClientboundSetCameraPacket(FriendlyByteBuf buffer) {
		this.cameraId = buffer.readVarInt();
	}

	/**
	 * Writes the raw packet data to the data stream.
	 */
	private void write(FriendlyByteBuf buffer) {
		buffer.writeVarInt(this.cameraId);
	}

	@Override
	public PacketType<ClientboundSetCameraPacket> type() {
		return GamePacketTypes.CLIENTBOUND_SET_CAMERA;
	}

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

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