Java tutorial
/* * This file is part of Applied Energistics 2. * Copyright (c) 2013 - 2015, AlgorithmX2, All rights reserved. * * Applied Energistics 2 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, either version 3 of the License, or * (at your option) any later version. * * Applied Energistics 2 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 Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>. */ package appeng.core.sync.packets; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.entity.player.EntityPlayerMP; import appeng.api.util.DimensionalCoord; import appeng.core.sync.AppEngPacket; import appeng.core.sync.network.INetworkInfo; import appeng.core.sync.network.NetworkHandler; import appeng.core.worlddata.WorldData; import appeng.services.compass.ICompassCallback; public class PacketCompassRequest extends AppEngPacket implements ICompassCallback { final long attunement; final int cx; final int cz; final int cdy; private EntityPlayer talkBackTo; // automatic. public PacketCompassRequest(final ByteBuf stream) { this.attunement = stream.readLong(); this.cx = stream.readInt(); this.cz = stream.readInt(); this.cdy = stream.readInt(); } // api public PacketCompassRequest(final long attunement, final int cx, final int cz, final int cdy) { final ByteBuf data = Unpooled.buffer(); data.writeInt(this.getPacketID()); data.writeLong(this.attunement = attunement); data.writeInt(this.cx = cx); data.writeInt(this.cz = cz); data.writeInt(this.cdy = cdy); this.configureWrite(data); } @Override public void calculatedDirection(final boolean hasResult, final boolean spin, final double radians, final double dist) { NetworkHandler.instance().sendTo(new PacketCompassResponse(this, hasResult, spin, radians), (EntityPlayerMP) this.talkBackTo); } @Override public void serverPacketData(final INetworkInfo manager, final AppEngPacket packet, final EntityPlayer player) { this.talkBackTo = player; final DimensionalCoord loc = new DimensionalCoord(player.worldObj, this.cx << 4, this.cdy << 5, this.cz << 4); WorldData.instance().compassData().service().getCompassDirection(loc, 174, this); } }