com.valaphee.netcode.mcbe.network.packet.CacheBlobsPacket.kt Maven / Gradle / Ivy

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Minecraft: Bedrock Edition Netcode

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/*
 * Copyright (c) 2021-2022, Valaphee.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.valaphee.netcode.mcbe.network.packet

import com.valaphee.netcode.mcbe.network.Packet
import com.valaphee.netcode.mcbe.network.PacketBuffer
import com.valaphee.netcode.mcbe.network.PacketHandler
import com.valaphee.netcode.mcbe.network.PacketReader
import com.valaphee.netcode.mcbe.network.Restrict
import com.valaphee.netcode.mcbe.network.Restriction
import it.unimi.dsi.fastutil.longs.Long2ObjectMap
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap

/**
 * @author Kevin Ludwig
 */
@Restrict(Restriction.ToClient)
class CacheBlobsPacket(
    val blobs: Long2ObjectMap
) : Packet() {
    override val id get() = 0x88

    override fun write(buffer: PacketBuffer, version: Int) {
        buffer.writeVarUInt(blobs.size)
        blobs.forEach { (key, value) ->
            buffer.writeLongLE(key)
            buffer.writeByteArray(value)
        }
    }

    override fun handle(handler: PacketHandler) = handler.cacheBlobs(this)

    override fun toString() = "CacheBlobsPacket(blobs=${blobs.values})"
}

/**
 * @author Kevin Ludwig
 */
object CacheBlobsPacketReader : PacketReader {
    override fun read(buffer: PacketBuffer, version: Int): CacheBlobsPacket {
        val blobCount = buffer.readVarUInt()
        return CacheBlobsPacket(Long2ObjectOpenHashMap(blobCount).apply { repeat(blobCount) { this[buffer.readLongLE()] = buffer.readByteArray() } })
    }
}