001/*
002 * Trident - A Multithreaded Server Alternative
003 * Copyright 2014 The TridentSDK Team
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *    http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package net.tridentsdk.server.packets.play.in;
019
020import io.netty.buffer.ByteBuf;
021import net.tridentsdk.base.Position;
022import net.tridentsdk.event.player.PlayerTabCompleteEvent;
023import net.tridentsdk.server.netty.ClientConnection;
024import net.tridentsdk.server.netty.Codec;
025import net.tridentsdk.server.netty.packet.InPacket;
026import net.tridentsdk.server.netty.packet.Packet;
027import net.tridentsdk.server.packets.play.out.PacketPlayOutTabComplete;
028import net.tridentsdk.server.player.PlayerConnection;
029
030/**
031 * Sent when the user presses tab while writing text. The payload contains all text behind the cursor.
032 */
033public class PacketPlayInTabComplete extends InPacket {
034    /**
035     * Text currently written
036     */
037    protected String text;
038    /**
039     * If player is looking at a specific block
040     */
041    protected boolean hasPosition;
042    /**
043     * PositionWritable of the block the player is looking at, only sent if hasPosition is true
044     */
045    protected Position lookedAtBlock;
046
047    @Override
048    public int id() {
049        return 0x01;
050    }
051
052    @Override
053    public Packet decode(ByteBuf buf) {
054        this.text = Codec.readString(buf);
055        this.hasPosition = buf.readBoolean();
056
057        if (this.hasPosition) {
058            long encoded = buf.readLong();
059            double x = (double) (encoded << 38);
060            double y = (double) (encoded << 26 >> 52);
061            double z = (double) (encoded << 38 >> 38);
062
063            this.lookedAtBlock = Position.create(null, x, y, z);
064        }
065
066        return this;
067    }
068
069    public String text() {
070        return this.text;
071    }
072
073    public boolean hasPosition() {
074        return this.hasPosition;
075    }
076
077    public Position lookedAtBlock() {
078        return this.lookedAtBlock;
079    }
080
081    @Override
082    public void handleReceived(ClientConnection connection) {
083        PlayerTabCompleteEvent event = new PlayerTabCompleteEvent(((PlayerConnection) connection).player(),
084                this.text);
085
086        if (event.suggestions().length > 0) {
087            connection.sendPacket(new PacketPlayOutTabComplete().set("matches", event.suggestions()));
088        }
089    }
090}