WeaponScript.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/WeaponScript.h>
#include <weapons/AccessoryStore.h>
#include <common/Defines.h>
#include <lua/LUAScriptFactory.h>
#include <lua/LUAScript.h>

REGISTER_ACCESSORY_SOURCE(WeaponScript);

WeaponScript::WeaponScript() :
        script_(0)
{

}

WeaponScript::~WeaponScript()
{
        delete script_;
        script_ = 0;
}

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

        std::string filename;
        if (!accessoryNode->getNamedChild("filename", filename)) return false;
        if (!accessoryNode->getNamedChild("entrypoint", entrypoint_)) return false;

        std::string luaErrorString;
        script_ = context.getScorchedContext().getLUAScriptFactory().createScript();
        script_->addWeaponFunctions();
        if (!script_->loadFromFile(S3D::getDataFile(filename), luaErrorString))
        {
                return accessoryNode->returnError(
                        S3D::formatStringBuffer("Failed to load lua script %s : %s", 
                        filename.c_str(), luaErrorString.c_str()));
        }
        script_->setWeapon(this);

        XMLNode *variable;
        while (accessoryNode->getNamedChild("variable", variable, false))
        {
                std::string name;
                fixed value;
                if (!variable->getNamedChild("name", name)) return false;
                if (!variable->getNamedChild("value", value)) return false;

                script_->setGlobal(name, value);
        }

        return accessoryNode->failChildren();
}

void WeaponScript::fireWeapon(ScorchedContext &context,
        WeaponFireContext &weaponContext, FixedVector &position, FixedVector &velocity)
{
        fixed fPlayerId(true, weaponContext.getPlayerId());

        script_->startFunction(entrypoint_);
        script_->addNumberParameter(fPlayerId);
        script_->addVectorParameter(position);
        script_->addVectorParameter(velocity);
        script_->endFunction(3);
}

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