struct IView {
  struct SShakeParams {
    Ang3 shakeAngle;
    Vec3 shakeShift;
    float sustainDuration;
    float fadeInDuration;
    float fadeOutDuration;
    float frequency;
    float randomness;
    int shakeID;
    bool bFlipVec;
    bool bUpdateOnly;
    bool bGroundOnly;
    bool bPermanent;
    bool isSmooth;
  };
};

IViewSystem.h

struct SShakeParams {
  Ang3 shakeAngle;
  Vec3 shakeShift;
  float sustainDuration;
  float fadeInDuration;
  float fadeOutDuration;
  float frequency;
  float randomness;
  int shakeID;
  bool bFlipVec;
  bool bUpdateOnly;
  bool bGroundOnly;
  bool bPermanent;
  bool isSmooth;
};

IViewSystem.h

bool bFlipVec;

bool bGroundOnly;

bool bPermanent;

if true, sustainDuration is ignored

bool bUpdateOnly;

float fadeInDuration;

float fadeOutDuration;

float frequency;

bool isSmooth;

float randomness;

Ang3 shakeAngle;

int shakeID;

Vec3 shakeShift;

float sustainDuration;

SShakeParams();

virtual ~IView();

virtual const SViewParams * GetCurrentParams() = 0;

virtual EntityId GetLinkedId() = 0;

virtual void LinkTo(IEntity * follow) = 0;

virtual void LinkTo(IGameObject * follow) = 0;

virtual void Release() = 0;

virtual void ResetBlending() = 0;

virtual void ResetShaking() = 0;

virtual void SetActive(bool const bActive) = 0;

virtual void SetCurrentParams(SViewParams & params) = 0;

virtual void SetFrameAdditiveCameraAngles(const Ang3& addFrameAngles) = 0;

virtual void SetScale(const float scale) = 0;

virtual void SetViewShake(Ang3 shakeAngle, Vec3 shakeShift, float duration, float frequency, float randomness, int shakeID, bool bFlipVec = true, bool bUpdateOnly = false, bool bGroundOnly = false) = 0;

virtual void SetViewShakeEx(const SShakeParams& params) = 0;

virtual void SetZoomedScale(const float scale) = 0;

virtual void StopShake(int shakeID) = 0;

virtual void Update(float frameTime, bool isActive) = 0;