////  CharacterGhostObject.h//  libraries/physics/src////  Created by Andrew Meadows 2016.08.26//  Copyright 2016 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #ifndef hifi_CharacterGhostObject_h#define hifi_CharacterGhostObject_h #include <stdint.h> #include <btBulletDynamicsCommon.h>#include <BulletCollision/CollisionDispatch/btGhostObject.h>#include <stdint.h> #include "CharacterSweepResult.h"#include "CharacterRayResult.h" class CharacterGhostShape; class CharacterGhostObject : public btGhostObject {public:    CharacterGhostObject() { }    ~CharacterGhostObject();     void setCollisionGroupAndMask(int32_t group, int32_t mask);    void getCollisionGroupAndMask(int32_t& group, int32_t& mask) const;     void setRadiusAndHalfHeight(btScalar radius, btScalar halfHeight);    void setUpDirection(const btVector3& up);     void setCharacterShape(btConvexHullShape* shape);     void setCollisionWorld(btCollisionWorld* world);     bool rayTest(const btVector3& start,            const btVector3& end,            CharacterRayResult& result) const;     void refreshOverlappingPairCache(); protected:    void removeFromWorld();    void addToWorld(); protected:    btCollisionWorld* _world { nullptr }; // input, pointer to world    btScalar _halfHeight { 0.0f };    btScalar _radius { 0.0f };    btConvexHullShape* _characterShape { nullptr }; // input, shape of character    CharacterGhostShape* _ghostShape { nullptr }; // internal, shape whose Aabb is used for overlap cache    int32_t _collisionFilterGroup { 0 };    int32_t _collisionFilterMask { 0 };    bool _inWorld { false }; // internal, was added to world}; #endif // hifi_CharacterGhostObject_h