gps.GpsPacket.java Source code

Introduction

Here is the source code for gps.GpsPacket.java

Source

/**
 * The code of the GPS mod and all related materials like textures is licensed under the
 * GNU GENERAL PUBLIC LICENSE Version 3.
 * <p>
 * See https://github.com/Aroma1997/GPS/blob/master/license.txt for more information.
 */
package gps;

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

import io.netty.buffer.ByteBuf;
import org.apache.logging.log4j.Level;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.server.MinecraftServer;
import net.minecraft.util.math.BlockPos;

import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
import net.minecraftforge.fml.relauncher.Side;

import aroma1997.core.log.LogHelper;

public class GpsPacket implements IMessage, IMessageHandler<GpsPacket, IMessage> {

    public GpsPacket(EntityPlayer target, MinecraftServer server) {
        dataList = new LinkedList<>();
        //      dataList.add(new PlayerData("Origin", 0, BlockPos.ORIGIN));
        for (EntityPlayer player : server.getPlayerList().getPlayers()) {
            if (player == target) {
                continue;
            }
            if (GPS.gps.shouldShowOnGPS(target, player)) {
                dataList.add(new PlayerData(player.getDisplayNameString(), player.world.provider.getDimension(),
                        player.getPosition()));
            }
        }
    }

    public GpsPacket() {
    }

    List<PlayerData> dataList;

    @Override
    public IMessage onMessage(GpsPacket message, MessageContext ctx) {
        if (ctx.side == Side.CLIENT) {
            ClientProxy proxy = (ClientProxy) GPS.proxy;
            List<PlayerData> data = message.dataList;
            Collections.sort(data, proxy.playerDatComparator);
            proxy.dataList = data;
        } else {
            LogHelper.log(Level.ERROR, "Received GPS message on the server. Aborting.");
        }
        return null;
    }

    @Override
    public void fromBytes(ByteBuf buf) {
        int size = buf.readUnsignedByte();
        dataList = new ArrayList<>(size);
        for (int i = 0; i < size; i++) {
            dataList.add(readPlayerData(buf));
        }
    }

    @Override
    public void toBytes(ByteBuf buf) {
        buf.writeByte(dataList.size());
        for (PlayerData data : dataList) {
            writePlayerData(data, buf);
        }
    }

    private PlayerData readPlayerData(ByteBuf buf) {
        char[] chars = new char[buf.readUnsignedByte()];
        for (int i = 0; i < chars.length; i++) {
            chars[i] = buf.readChar();
        }
        String username = new String(chars);
        BlockPos pos = new BlockPos(buf.readInt(), buf.readInt(), buf.readInt());
        int dimension = buf.readInt();
        return new PlayerData(username, dimension, pos);
    }

    private void writePlayerData(PlayerData data, ByteBuf buf) {
        buf.writeByte(data.username.length());
        for (int i = 0; i < data.username.length(); i++) {
            buf.writeChar(data.username.charAt(i));
        }
        buf.writeInt(data.pos.getX());
        buf.writeInt(data.pos.getY());
        buf.writeInt(data.pos.getZ());
        buf.writeInt(data.dimension);
    }

}