axmol/cocos/physics/chipmunk/CCPhysicsShapeInfo_chipmunk.cpp

/****************************************************************************
 Copyright (c) 2013 cocos2d-x.org
 
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#include "CCPhysicsShapeInfo_chipmunk.h"
#ifdef CC_USE_PHYSICS
#include <algorithm>
#include <unordered_map>

NS_CC_BEGIN

std::unordered_map<cpShape*, PhysicsShapeInfo*> PhysicsShapeInfo::_map;
cpBody* PhysicsShapeInfo::_sharedBody = nullptr;

PhysicsShapeInfo::PhysicsShapeInfo(PhysicsShape* shape)
: _shape(shape)
, _group(CP_NO_GROUP)
{
    if (_sharedBody == nullptr)
    {
        _sharedBody = cpBodyNewStatic();
    }
    
    _body = _sharedBody;
}

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

void PhysicsShapeInfo::setGroup(cpGroup group)
{
    this->_group = group;
    
    for (cpShape* shape : _shapes)
    {
        cpShapeSetGroup(shape, group);
    }
}

void PhysicsShapeInfo::setBody(cpBody* body)
{
    if (this->_body != body)
    {
        this->_body = body;
        for (cpShape* shape : _shapes)
        {
            cpShapeSetBody(shape, body == nullptr ? _sharedBody : body);
        }
    }
}

void PhysicsShapeInfo::add(cpShape* shape)
{
    if (shape == nullptr) return;
    
    cpShapeSetGroup(shape, _group);
    _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);
        
        cpShapeFree(shape);
    }
}

void PhysicsShapeInfo::removeAll()
{
    for (cpShape* shape : _shapes)
    {
        auto mit = _map.find(shape);
        if (mit != _map.end()) _map.erase(mit);
        cpShapeFree(shape);
    }
    
    _shapes.clear();
}

NS_CC_END
#endif // CC_USE_PHYSICS