mirror of
https://github.com/Nan1t/NanoLimbo.git
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80 lines
2.6 KiB
Java
80 lines
2.6 KiB
Java
/*
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* Copyright (C) 2020 Nan1t
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package ua.nanit.limbo.connection.pipeline;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.MessageToByteEncoder;
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import ua.nanit.limbo.protocol.ByteMessage;
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import ua.nanit.limbo.protocol.Packet;
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import ua.nanit.limbo.protocol.PacketSnapshot;
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import ua.nanit.limbo.protocol.registry.State;
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import ua.nanit.limbo.protocol.registry.Version;
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import ua.nanit.limbo.server.Logger;
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public class PacketEncoder extends MessageToByteEncoder<Packet> {
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private State.PacketRegistry registry;
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private Version version;
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public PacketEncoder() {
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updateVersion(Version.getMin());
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updateState(State.HANDSHAKING);
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}
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@Override
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protected void encode(ChannelHandlerContext ctx, Packet packet, ByteBuf out) throws Exception {
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if (registry == null) return;
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ByteMessage msg = new ByteMessage(out);
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int packetId;
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if (packet instanceof PacketSnapshot) {
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packetId = registry.getPacketId(((PacketSnapshot)packet).getWrappedPacket().getClass());
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} else {
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packetId = registry.getPacketId(packet.getClass());
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}
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if (packetId == -1) {
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Logger.warning("Undefined packet class: %s[0x%s]", packet.getClass().getName(), Integer.toHexString(packetId));
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return;
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}
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msg.writeVarInt(packetId);
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try {
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packet.encode(msg, version);
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if (Logger.getLevel() >= Logger.Level.DEBUG.getIndex()) {
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Logger.debug("Sending %s[0x%s] packet (%d bytes)", packet.toString(), Integer.toHexString(packetId), msg.readableBytes());
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}
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} catch (Exception e) {
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Logger.error("Cannot encode packet 0x%s: %s", Integer.toHexString(packetId), e.getMessage());
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}
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}
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public void updateVersion(Version version) {
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this.version = version;
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}
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public void updateState(State state) {
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this.registry = state.clientBound.getRegistry(version);
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}
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}
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