WeaponTankPosition.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <weapons/WeaponTankPosition.h>
#include <weapons/AccessoryStore.h>
#include <tank/TankContainer.h>
#include <tank/TankState.h>
#include <tank/TankPosition.h>
#include <target/TargetLife.h>

REGISTER_ACCESSORY_SOURCE(WeaponTankPosition);

WeaponTankPosition::WeaponTankPosition() : sightPos_(false)
{

}

WeaponTankPosition::~WeaponTankPosition()
{

}

bool WeaponTankPosition::parseXML(AccessoryCreateContext &context, XMLNode *accessoryNode)
{
        if (!Weapon::parseXML(context, accessoryNode)) return false;

        // Get the next weapon
        XMLNode *subNode = 0;
        if (!accessoryNode->getNamedChild("aimedweapon", subNode)) return false;

        // Check next weapon is correct type
        AccessoryPart *accessory = context.getAccessoryStore().
                createAccessoryPart(context, parent_, subNode);
        if (!accessory || accessory->getType() != AccessoryPart::AccessoryWeapon)
        {
                return subNode->returnError("Failed to find sub weapon, not a weapon");
        }
        aimedWeapon_ = (Weapon*) accessory;

        accessoryNode->getNamedChild("sightpos", sightPos_, false);

        return true;
}

void WeaponTankPosition::fireWeapon(ScorchedContext &context,
        WeaponFireContext &weaponContext, FixedVector &position, FixedVector &velocity)
{
        // This weapon re-centers the current shot on the firing tank.
        // This can be used for firing from a moving tank

        Tank *tank = context.getTankContainer().getTankById(weaponContext.getPlayerId());
        if (tank && tank->getState().getState() == TankState::sNormal)
        {
                FixedVector newPosition = tank->getLife().getTargetPosition();
                if (sightPos_)
                {
                        newPosition = tank->getPosition().getTankGunPosition();
                }

                aimedWeapon_->fireWeapon(context, weaponContext, newPosition, velocity);
        }
}

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