com.vethrfolnir.game.network.mu.received.MovedToLocation.java Source code

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Here is the source code for com.vethrfolnir.game.network.mu.received.MovedToLocation.java

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/**
 * Copyright (C) 2013-2014 Project-Vethrfolnir
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.vethrfolnir.game.network.mu.received;

import io.netty.buffer.ByteBuf;

import com.vethrfolnir.game.entitys.GameObject;
import com.vethrfolnir.game.entitys.components.Positioning;
import com.vethrfolnir.game.entitys.components.player.PlayerMapping;
import com.vethrfolnir.game.entitys.components.player.PlayerState;
import com.vethrfolnir.game.network.mu.MuClient;
import com.vethrfolnir.game.network.mu.packets.MuReadPacket;
import com.vethrfolnir.game.util.MuUtils;

/**
 * @author Vlad
 * This.. this is just wrong.
 */
public class MovedToLocation extends MuReadPacket {

    private static final short stepDirections[] = { -1, -1, 0, -1, 1, -1, 1, 0, 1, 1, 0, 1, -1, 1, -1, 0 };

    @Override
    public void read(MuClient client, ByteBuf buff, Object... params) {
        GameObject entity = client.getEntity();
        Positioning positioning = entity.get(PlayerMapping.Positioning);

        int origianlX = readC(buff);
        int origianlY = readC(buff);

        int offset = buff.readerIndex();
        byte[] data = buff.array();

        int pack = data[offset];
        int stepCount = (pack & 0x0F) + 1; // ... seriously now ...
        int heading = (pack & 0xF0) >> 4;

        int x = origianlX, y = origianlY;

        int TableIndex = 0;
        for (int i = 1; i < stepCount; i++) {
            if ((i % 2) == 1)
                TableIndex = data[offset + (i + 1) / 2] >> 4;
            else
                TableIndex = data[offset + (i + 1) / 2] & 0x0F;

            x += stepDirections[TableIndex * 2];
            y += stepDirections[TableIndex * 2 + 1];
        }

        PlayerState state = entity.get(PlayerMapping.PlayerState);

        // Cheap yet effective, for now
        int distance = (int) MuUtils.distanceSquared(positioning.getX(), positioning.getY(), x, y);

        if (!state.isGM() && (distance > 10 && !positioning.moveFlag())) {
            client.close();
        }

        positioning.moveTo(x, y, heading);
        //System.out.println(getClass().getSimpleName()+": player "+entity.getName()+" "+x+" X "+y+" Y from[x "+origianlX+" y "+origianlY+"]  Heading: "+(heading)+". Step Count: "+stepCount);
    }
}