MissileProcess.cpp

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/*
Copyright (C) 2003-2007 The Pentagram team

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/



// This class is DEPRECATED.
// It only exists to provide backward compatibility for savegames



#include "pent_include.h"

#include "MissileProcess.h"
#include "Item.h"
#include "getObject.h"

#include "IDataSource.h"
#include "ODataSource.h"

// p_dynamic_cast stuff
DEFINE_RUNTIME_CLASSTYPE_CODE(MissileProcess,Process);

MissileProcess::MissileProcess()
        : Process()
{

}

bool MissileProcess::run(const uint32 /*framenum*/)
{
        // some values to make items use a nice arc :-)
        // (No, this isn't permanent, but it makes the fish fly nicely ;-) )
        static const int sinvals[21] = 
                {0, 156, 309, 454, 588, 705, 809, 891, 952, 987, 1000,
                 987, 952, 891, 809, 705, 588, 454, 309, 156, 0};

        Item *it = getItem(item_num);

        if (!it) {
                // item gone
                terminate();
                return false;
        }

        sint32 x, y, z;

        currentpos += 1;
        if (currentpos > (2500/speed)) currentpos = (2500/speed);

        x = from_x + (((to_x - from_x) * currentpos) * speed) / 2500;
        y = from_y + (((to_y - from_y) * currentpos) * speed) / 2500;
        z = from_z + (((to_z - from_z) * currentpos) * speed) / 2500;
        if (curve) z += sinvals[(20*currentpos*speed)/2500]/25;

        it->collideMove(x,y,z,false,false);

        if (currentpos >= (2500/speed)) {
                it->fall();
                terminate();
        }

        return true;
}

void MissileProcess::saveData(ODataSource* ods)
{
        Process::saveData(ods);

        ods->write4(static_cast<uint32>(from_x));
        ods->write4(static_cast<uint32>(from_y));
        ods->write4(static_cast<uint32>(from_z));
        ods->write4(static_cast<uint32>(to_x));
        ods->write4(static_cast<uint32>(to_y));
        ods->write4(static_cast<uint32>(to_z));
        ods->write4(static_cast<uint32>(speed));
        ods->write4(static_cast<uint32>(currentpos));

        uint8 c = (curve ? 1 : 0);
        ods->write1(c);

}

bool MissileProcess::loadData(IDataSource* ids, uint32 version)
{
        if (!Process::loadData(ids, version)) return false;

        from_x = static_cast<int>(ids->read4());
        from_y = static_cast<int>(ids->read4());
        from_z = static_cast<int>(ids->read4());
        to_x = static_cast<int>(ids->read4());
        to_y = static_cast<int>(ids->read4());
        to_z = static_cast<int>(ids->read4());
        speed = static_cast<int>(ids->read4());
        currentpos = static_cast<int>(ids->read4());

        curve = (ids->read1() != 0);

        return true;
}

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