public:
 enum SensorType {IRST, Radar, RWR, Visual, HTS, TargetingPod, RadarHoming, NumSensorTypes};
 enum TrackTypes {NoTrack, Detection, UnreliableTrack, SensorTrack};
enum SensorData {NoInfo, LooseBearing, RangeAndBearing, ExactPosition, PositionAndOrientation};
 typedef struct
 {
  float az, el, ata, droll;
  float azFrom, elFrom, ataFrom;
  float x, y, z;
  float range, vt;
 } SensorUpdateType;

 SensorData  dataProvided;
 SimMoverClass* platform;

  public:
 SensorType Type(void)   { return sensorType; };

 virtual void SetPower (BOOL state) { isOn = state; if (!isOn) ClearSensorTarget(); };
 BOOL   IsOn(void)    { return isOn; };

 virtual void SetDesiredTarget( SimObjectType* newTarget );  // AI Uses this to command a lock
 virtual void ClearSensorTarget ( void );      // Drop our target lock (if any)
 SimObjectType* CurrentTarget(void) { return lockedTarget; };

 virtual SimObjectType* Exec (SimObjectType* curTargetList) = 0;
 virtual void ExecModes(int, int)      {};
 virtual void UpdateState(int, int)      {};
 virtual void SetSeekerPos (float newAz, float newEl) { seekerAzCenter = newAz; seekerElCenter = newEl; };
 virtual VU_ID TargetUnderCursor (void)  { return targetUnderCursor; }; // ID of the thing under the cursor, or FalconNullId

 VirtualDisplay* GetDisplay (void)      { return privateDisplay; };
 float   SeekerAz (void)       { return seekerAzCenter; };
 float   SeekerEl (void)       { return seekerElCenter; };

  protected:
 virtual void SetSensorTarget( SimObjectType* newTarget );  // Used for things in the target list
 virtual void SetSensorTargetHack( FalconEntity* newTarget ); // Creates a "dummy" SimObjectType whose rel geom isn't updated
 virtual void CheckLockedTarget( void );       // Handle sim/camp handoff and target death

 SimObjectType *FindNextDetected(SimObjectType*);
 SimObjectType *FindPrevDetected(SimObjectType*);
 VU_ID     targetUnderCursor;  // ID of the target under the player's cursors

  protected:
 // Targeting
 SimObjectType *lockedTarget;   // Current "primary" target -- who we're locked onto
 int    isOn;     // Is this sensor turned on?

 // Sensor state
 float  seekerAzCenter, seekerElCenter;
 SensorType sensorType;