axmol/cocos/physics/chipmunk/CCPhysicsJointInfo_chipmunk.cpp

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#ifdef CC_USE_PHYSICS
#include "CCPhysicsJointInfo_chipmunk.h"
#include <algorithm>
#include <unordered_map>

NS_CC_BEGIN

std::unordered_map<cpConstraint*, PhysicsJointInfo*> PhysicsJointInfo::_map;

PhysicsJointInfo::PhysicsJointInfo(PhysicsJoint* joint)
: _joint(joint)
{
}

PhysicsJointInfo::~PhysicsJointInfo()
{
    for (cpConstraint* joint : _joints)
    {
        cpConstraintFree(joint);
    }
}

void PhysicsJointInfo::add(cpConstraint* joint)
{
    if (joint == nullptr) return;

    _joints.push_back(joint);
    _map.insert(std::pair<cpConstraint*, PhysicsJointInfo*>(joint, this));
}

void PhysicsJointInfo::remove(cpConstraint* joint)
{
    if (joint == nullptr) return;
    
    auto it = std::find(_joints.begin(), _joints.end(), joint);
    if (it != _joints.end())
    {
        _joints.erase(it);
        
        auto mit = _map.find(joint);
        if (mit != _map.end()) _map.erase(mit);
        
        cpConstraintFree(joint);
    }
}

void PhysicsJointInfo::removeAll()
{
    for (cpConstraint* joint : _joints)
    {
        auto mit = _map.find(joint);
        if (mit != _map.end()) _map.erase(mit);
        cpConstraintFree(joint);
    }
    
    _joints.clear();
}

NS_CC_END
#endif // CC_USE_PHYSICS