LandscapeEvents.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 <landscapedef/LandscapeEvents.h>
#include <landscapemap/LandscapeMaps.h>
#include <engine/ScorchedContext.h>
#include <engine/ActionController.h>
#include <weapons/AccessoryStore.h>
#include <common/Logger.h>
#include <XML/XMLNode.h>

// LandscapeEvent
LandscapeEvent::~LandscapeEvent()
{
        delete condition;
        delete action;
}

bool LandscapeEvent::readXML(XMLNode *node)
{
        {
                XMLNode *conditionNode;
                std::string conditiontype;
                if (!node->getNamedChild("condition", conditionNode)) return false;
                if (!conditionNode->getNamedParameter("type", conditiontype)) return false;
                if (!(condition = LandscapeCondition::create(conditiontype.c_str()))) return false;
                if (!condition->readXML(conditionNode)) return false;
        }
        {
                XMLNode *actionNode;
                std::string actiontype;
                if (!node->getNamedChild("action", actionNode)) return false;
                if (!actionNode->getNamedParameter("type", actiontype)) return false;
                if (!(action = LandscapeAction::create(actiontype.c_str()))) return false;
                if (!action->readXML(actionNode)) return false;
        }       
        
        return node->failChildren();
}

LandscapeCondition *LandscapeCondition::create(const char *type)
{
        if (0 == strcmp(type, "time")) return new LandscapeConditionTime;
        if (0 == strcmp(type, "random")) return new LandscapeConditionRandom;
        if (0 == strcmp(type, "groupsize")) return new LandscapeConditionGroupSize;
        S3D::dialogMessage("LandscapeCondition", S3D::formatStringBuffer("Unknown condition type %s", type));
        return 0;
}

// LandscapeConditionGroupSize
fixed LandscapeConditionGroupSize::getNextEventTime(ScorchedContext &context, int eventNumber)
{
        return fixed::MAX_FIXED;
}

bool LandscapeConditionGroupSize::fireEvent(ScorchedContext &context, 
        fixed timeLeft, int eventNumber)
{
        if (eventNumber == 1) // i.e. the first event
        {
                TargetGroupsGroupEntry *groupEntry =
                        context.getLandscapeMaps().getGroundMaps().getGroups().getGroup(
                                groupname.c_str());
                if (groupEntry)
                {
                        int groupCount = groupEntry->getObjectCount();
                        if (groupCount <= groupsize) return true;
                }
        }

        return false;
}

bool LandscapeConditionGroupSize::readXML(XMLNode *node)
{
        if (!node->getNamedChild("groupname", groupname)) return false;
        if (!node->getNamedChild("groupsize", groupsize)) return false;
        return node->failChildren();
}

// LandscapeConditionTime
fixed LandscapeConditionTime::getNextEventTime(ScorchedContext &context, int eventNumber)
{
        if (eventNumber > 1 &&
                singletimeonly)
        {
                return fixed::MAX_FIXED;
        }

        return context.getActionController().getRandom().getRandFixed() * 
                (maxtime - mintime) + mintime;
}

bool LandscapeConditionTime::fireEvent(ScorchedContext &context, 
        fixed timeLeft, int eventNumber)
{
        return (timeLeft < fixed(0));
}

bool LandscapeConditionTime::readXML(XMLNode *node)
{
        if (!node->getNamedChild("mintime", mintime)) return false;
        if (!node->getNamedChild("maxtime", maxtime)) return false;
        if (!node->getNamedChild("singletimeonly", singletimeonly)) return false;
        return node->failChildren();
}

// LandscapeConditionRandom
fixed LandscapeConditionRandom::getNextEventTime(ScorchedContext &context, int eventNumber)
{
        if (eventNumber > 1)
        {
                return fixed::MAX_FIXED;
        }

        if (context.getActionController().getRandom().getRandFixed() < randomchance)
        {
                return randomdelay;
        }
        return fixed::MAX_FIXED;
}

bool LandscapeConditionRandom::fireEvent(ScorchedContext &context, 
        fixed timeLeft, int eventNumber)
{
        return (timeLeft < fixed(0));
}

bool LandscapeConditionRandom::readXML(XMLNode *node)
{
        if (!node->getNamedChild("randomchance", randomchance)) return false;
        if (!node->getNamedChild("randomdelay", randomdelay)) return false;
        return node->failChildren();
}

LandscapeAction *LandscapeAction::create(const char *type)
{
        if (0 == strcmp(type, "fireweapon")) return new LandscapeActionFireWeapon;
        S3D::dialogMessage("LandscapeAction", S3D::formatStringBuffer("Unknown action type %s", type));
        return 0;
}

// LandscapeActionFireWeapon
void LandscapeActionFireWeapon::fireAction(ScorchedContext &context)
{
        Accessory *accessory = 
                context.getAccessoryStore().findByPrimaryAccessoryName(
                        weapon.c_str());
        if (!accessory) S3D::dialogExit("LandscapeActionFireWeapon",
                S3D::formatStringBuffer("Failed to find weapon named \"%s\"", weapon.c_str()));
        if (accessory->getType() != AccessoryPart::AccessoryWeapon) 
                S3D::dialogExit("LandscapeActionFireWeapon",
                        S3D::formatStringBuffer("Accessory named \"%s\" is not a weapon", weapon.c_str()));
        Weapon *weapon = (Weapon *) accessory->getAction();

        WeaponFireContext weaponContext(0, Weapon::eDataDeathAnimation);
        FixedVector pos, vel;
        weapon->fireWeapon(context, weaponContext, pos, vel);
}

bool LandscapeActionFireWeapon::readXML(XMLNode *node)
{
        if (!node->getNamedChild("weapon", weapon)) return false;
        return node->failChildren();
}

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