/*
 * Minecraft Forge
 * Copyright (c) 2016-2019.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation version 2.1
 * of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.minecraftforge.fml.common.registry;

import net.minecraft.network.PacketBuffer;

/**
 * A interface for Entities that need extra information to be communicated
 * between the server and client when they are spawned.
 */
public interface IEntityAdditionalSpawnData
{
    /**
     * Called by the server when constructing the spawn packet.
     * Data should be added to the provided stream.
     *
     * @param buffer The packet data stream
     */
    void writeSpawnData(PacketBuffer buffer);

    /**
     * Called by the client when it receives a Entity spawn packet.
     * Data should be read out of the stream in the same way as it was written.
     *
     * @param additionalData The packet data stream
     */
    void readSpawnData(PacketBuffer additionalData);
}