axmol/extensions/CCArmature/physics/CCColliderDetector.cpp

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#include "CCColliderDetector.h"
#include "CCPhysicsWorld.h"
#include "../CCBone.h"
#include "Box2D/Box2D.h"

NS_CC_EXT_BEGIN

CCColliderDetector *CCColliderDetector::create()
{
    CCColliderDetector *pColliderDetector = new CCColliderDetector();
    if (pColliderDetector && pColliderDetector->init())
    {
        pColliderDetector->autorelease();
        return pColliderDetector;
    }
    CC_SAFE_DELETE(pColliderDetector);
    return NULL;
}

CCColliderDetector *CCColliderDetector::create(CCBone *bone)
{
    CCColliderDetector *pColliderDetector = new CCColliderDetector();
    if (pColliderDetector && pColliderDetector->init(bone))
    {
        pColliderDetector->autorelease();
        return pColliderDetector;
    }
    CC_SAFE_DELETE(pColliderDetector);
    return NULL;
}

CCColliderDetector::CCColliderDetector()
    : m_pColliderBodyList(NULL)
{
}

CCColliderDetector::~CCColliderDetector()
{
    CCObject *object = NULL;
    CCARRAY_FOREACH(m_pColliderBodyList, object)
    {
        ColliderBody *colliderBody = (ColliderBody *)object;

        b2Body *body = colliderBody->getB2Body();
        CCPhysicsWorld::sharedPhysicsWorld()->getNoGravityWorld()->DestroyBody(body);
    }


    m_pColliderBodyList->removeAllObjects();
    CC_SAFE_DELETE(m_pColliderBodyList);
}

bool CCColliderDetector::init()
{
    m_pColliderBodyList = CCArray::create();
    CCAssert(m_pColliderBodyList, "create m_pColliderBodyList failed!");
    m_pColliderBodyList->retain();

    return true;
}

bool CCColliderDetector::init(CCBone *bone)
{
    init();
    setBone(bone);

    return true;
}

void CCColliderDetector::addContourData(CCContourData *contourData)
{
    const CCArray *array = &contourData->vertexList;
    CCObject *object = NULL;

    b2Vec2 *b2bv = new b2Vec2[contourData->vertexList.count()];

    int i = 0;
    CCARRAY_FOREACH(array, object)
    {
        CCContourVertex2 *v = (CCContourVertex2 *)object;
        b2bv[i].Set(v->x / PT_RATIO, v->y / PT_RATIO);
        i++;
    }

    b2PolygonShape polygon;
    polygon.Set(b2bv, contourData->vertexList.count());

    CC_SAFE_DELETE(b2bv);

    b2FixtureDef fixtureDef;
    fixtureDef.shape = &polygon;
    fixtureDef.density = 10.0f;
    fixtureDef.isSensor = true;

    b2BodyDef bodyDef;
    bodyDef.type = b2_dynamicBody;
    bodyDef.position = b2Vec2(0.0f, 0.0f);
    bodyDef.userData = m_pBone;

    b2Body *body = CCPhysicsWorld::sharedPhysicsWorld()->getNoGravityWorld()->CreateBody(&bodyDef);
    body->CreateFixture(&fixtureDef);

    ColliderBody *colliderBody = new ColliderBody(body, contourData);
    m_pColliderBodyList->addObject(colliderBody);
    colliderBody->release();
}

void CCColliderDetector::addContourDataList(CCArray *contourDataList)
{
    CCObject *object = NULL;
    CCARRAY_FOREACH(contourDataList, object)
    {
        addContourData((CCContourData *)object);
    }
}

void CCColliderDetector::removeContourData(CCContourData *_contourData)
{
    m_pColliderBodyList->removeObject(_contourData);
}

void CCColliderDetector::removeAll()
{
    m_pColliderBodyList->removeAllObjects();
}

void CCColliderDetector::setColliderFilter(b2Filter &filter)
{
    CCObject *object = NULL;
    CCARRAY_FOREACH(m_pColliderBodyList, object)
    {
        ColliderBody *colliderBody = (ColliderBody *)object;
        colliderBody->getB2Body()->GetFixtureList()->SetFilterData(filter);
    }
}

void CCColliderDetector::setActive(bool active)
{
    CCObject *object = NULL;
    CCARRAY_FOREACH(m_pColliderBodyList, object)
    {
        ColliderBody *colliderBody = (ColliderBody *)object;
        colliderBody->getB2Body()->SetActive(active);
    }
}

CCPoint helpPoint;

void CCColliderDetector::updateTransform(CCAffineTransform &t)
{
    CCObject *object = NULL;
    CCARRAY_FOREACH(m_pColliderBodyList, object)
    {
        ColliderBody *colliderBody = (ColliderBody *)object;

        CCContourData *contourData = colliderBody->getContourData();
        b2Body *body = colliderBody->getB2Body();

        b2PolygonShape *shape = (b2PolygonShape *)body->GetFixtureList()->GetShape();

        //! update every vertex
        const CCArray *array = &contourData->vertexList;
        CCObject *object = NULL;
        int i = 0;
        CCARRAY_FOREACH(array, object)
        {
            CCContourVertex2 *cv = (CCContourVertex2 *)object;
            b2Vec2 &bv = shape->m_vertices[i];

            helpPoint.setPoint(cv->x, cv->y);
            helpPoint = CCPointApplyAffineTransform(helpPoint, t);

            bv.Set(helpPoint.x / PT_RATIO, helpPoint.y / PT_RATIO);

            i++;
        }
    }
}



NS_CC_EXT_END