ThingMO.cpp

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/*
SagaEngine library
Copyright (c) 2002-2006 Skalden Studio AS

This software is provided 'as-is', without any express or implied 
warranty. In no event will the authors be held liable for any 
damages arising from the use of this software.

Permission is granted to distribute the library under the terms of the 
Q Public License version 1.0. Be sure to read and understand the license
before using the library. It should be included here, or you may read it
at http://www.trolltech.com/products/qt/licenses/licensing/qpl

The original version of this library can be located at:
http://www.sagaengine.com/

Rune Myrland
rune@skalden.com
*/


#include "ThingMO.hpp"
#include "ThingMOInfo.hpp"
#include "../schema/O3dSchema.hpp"
#include "util/math/all.hpp"
#include <OgreSceneManager.h>

using namespace se_client;
using namespace se_core;


namespace se_ogre {

    ThingMO
    ::ThingMO(se_core::PosComponent& thing, const ThingMOInfo& info, const ThingMOFactory& factory) 
        : thing_(thing), factory_(factory), info_(info), hasAnimation_(false), isVisible_(false), currentScale_(1) {

        parentNode_ = O3dSchema::sceneManager->getRootSceneNode();

        // Create things node, and add it to scene manager
        node_ = O3dSchema::sceneManager->createSceneNode();
        node_->setPosition(info_.offset_);
        node_->setOrientation(info_.rot_);

        // Scale all children of this node
        Ogre::Real s = info_.scale_;
        node_->setScale(s, s, s);
    }


    ThingMO
    ::~ThingMO() {
        if(O3dSchema::sceneManager) {
            node_->removeAndDestroyAllChildren();
            O3dSchema::sceneManager->destroySceneNode(node_->getName());
        }
        node_ = 0;
    }


    void ThingMO
    ::move(long when, float stepDelta, float timeSinceLastFrame) {
        // Check if mesh entity is visible
        const Point3& playerCoor = ClientSchema::player->pos().worldCoor();
        coor_double_t distSq = playerCoor.distanceSquared(thing_.pos().worldCoor());
        // Must be farther away than popIn distance, and closer than popOut distance
        // (if popOut distance is defined)
        bool isVisible = (distSq >= info_.popInSq_ && (info_.popOutSq_ == 0 || distSq < info_.popOutSq_));
        setVisible(isVisible);
        if(!isVisible) {
            return;
        }

        // If radius scales the model
        if(info_.doScaleByRadius_) {
            Ogre::Real r1 = CoorT::toFloat(thing_.pos().radius());
            Ogre::Real r2 = CoorT::toFloat(thing_.nextPos().radius());
            Ogre::Real s = r1 + stepDelta * (r2 - r1);

            // If scale has changed
            if(s != currentScale_) {
                // Store scale for future scale change checks
                currentScale_ = s;

                //
                s *= info_.scale_;

                // Scale all children of this node
                node_->setScale(s, s, s);
            }
        }

        if(hasAnimation_) {
            animate(when, stepDelta, timeSinceLastFrame);
        }
    }


    void ThingMO
    ::setVisible(bool state) {
        if(state == isVisible_) return;

        isVisible_ = state;
        if(isVisible_)
            parentNode_->addChild(node_);
        else
            parentNode_->removeChild(node_);
    }


    void ThingMO
    ::setParentNode(Ogre::SceneNode* sn) {
        if(sn == parentNode_)
            return;

        if(isVisible_)
            parentNode_->removeChild(node_);

        node_->setPosition(node_->getPosition() + parentNode_->getPosition());
        parentNode_ = sn;
        node_->setPosition(node_->getPosition() - parentNode_->getPosition());

        if(isVisible_)
            parentNode_->addChild(node_);
    }


    void ThingMO
    ::resetPos() {
        node_->setPosition(info_.offset_);
        node_->setOrientation(info_.rot_);
    }

}

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