axmol/cocos2dx/physics/chipmunk/CCPhysicsShapeInfo.cpp

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 Copyright (c) 2013 cocos2d-x.org
 
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#include "CCPhysicsShapeInfo.h"
#if (CC_PHYSICS_ENGINE == CC_PHYSICS_CHIPMUNK)
#include <algorithm>
NS_CC_BEGIN

std::map<cpShape*, PhysicsShapeInfo*> PhysicsShapeInfo::map;
cpBody* PhysicsShapeInfo::shareBody = nullptr;

PhysicsShapeInfo::PhysicsShapeInfo(PhysicsShape* shape)
: shape(shape)
{
    if (shareBody == nullptr)
    {
        shareBody = cpBodyNewStatic();
    }
    
    body = shareBody;
}

PhysicsShapeInfo::~PhysicsShapeInfo()
{
    for (auto shape : shapes)
    {
        auto it = map.find(shape);
        if (it != map.end()) map.erase(shape);
        
        cpShapeFree(shape);
    }
}

void PhysicsShapeInfo::add(cpShape* shape)
{
    if (shape == nullptr) return;
    
    shapes.push_back(shape);
    map.insert(std::pair<cpShape*, PhysicsShapeInfo*>(shape, this));
}

void PhysicsShapeInfo::remove(cpShape* shape)
{
    if (shape == nullptr) return;
    
    auto it = std::find(shapes.begin(), shapes.end(), shape);
    if (it != shapes.end())
    {
        shapes.erase(it);
        
        auto mit = map.find(shape);
        if (mit != map.end()) map.erase(mit);
    }
}

NS_CC_END
#endif // CC_PHYSICS_ENGINE == CC_PHYSICS_CHIPMUNK