////  EntityCollisionSystem.h//  libraries/entities/src////  Created by Brad Hefta-Gaub on 9/23/14.//  Copyright 2013-2014 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_EntityCollisionSystem_h#define hifi_EntityCollisionSystem_h #include <glm/glm.hpp>#include <stdint.h> #include <QtScript/QScriptEngine>#include <QtCore/QObject> #include <AvatarHashMap.h>#include <CollisionInfo.h>#include <OctreePacketData.h>#include <SharedUtil.h>#include <VoxelDetail.h> #include "EntityItem.h"#include "SimpleEntitySimulation.h" class AbstractAudioInterface;class AvatarData;class EntityEditPacketSender;class EntityTree;class VoxelTree; class EntityCollisionSystem : public QObject, public SimpleEntitySimulation {Q_OBJECTpublic:    EntityCollisionSystem();     void init(EntityEditPacketSender* packetSender, EntityTree* entities, VoxelTree* voxels,                                 AbstractAudioInterface* audio = NULL, AvatarHashMap* _avatars = NULL);                                    ~EntityCollisionSystem();     void updateCollisions();     void checkEntity(EntityItem* Entity);    void updateCollisionWithVoxels(EntityItem* Entity);    void updateCollisionWithEntities(EntityItem* Entity);    void updateCollisionWithAvatars(EntityItem* Entity);    void queueEntityPropertiesUpdate(EntityItem* Entity);    void updateCollisionSound(EntityItem* Entity, const glm::vec3 &penetration, float frequency); signals:    void entityCollisionWithVoxel(const EntityItemID& entityItemID, const VoxelDetail& voxel, const CollisionInfo& penetration);    void entityCollisionWithEntity(const EntityItemID& idA, const EntityItemID& idB, const CollisionInfo& penetration); private:    void applyHardCollision(EntityItem* entity, const CollisionInfo& collisionInfo);     static bool updateOperation(OctreeElement* element, void* extraData);    void emitGlobalEntityCollisionWithVoxel(EntityItem* Entity, VoxelDetail* voxelDetails, const CollisionInfo& penetration);    void emitGlobalEntityCollisionWithEntity(EntityItem* entityA, EntityItem* entityB, const CollisionInfo& penetration);     EntityEditPacketSender* _packetSender;    VoxelTree* _voxels;    AbstractAudioInterface* _audio;    AvatarHashMap* _avatars;    CollisionList _collisions;}; #endif // hifi_EntityCollisionSystem_h