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/*  Starshatter: The Open Source Project
    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
    Copyright (c) 1997-2006, Destroyer Studios LLC.

    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Integrated (Passive and Active) Sensor Package class
*/

#ifndef Sensor_h
#define Sensor_h

#include "Types.h"
#include "SimObject.h"
#include "System.h"
#include "Geometry.h"
#include "List.h"

// +--------------------------------------------------------------------+

class Shot;
class Contact;

// +--------------------------------------------------------------------+

class Sensor : public System, public SimObserver
{
public:
    enum Mode {
        PAS, STD, ACM, GM,   // fighter modes
        PST, CST             // starship modes
    };

    Sensor();
    Sensor(const Sensor& rhs);
    virtual ~Sensor();

    virtual void      ExecFrame(double seconds);
    virtual SimObject* LockTarget(int  type=SimObject::SIM_SHIP,
    bool closest=false,
    bool hostile=false);
    virtual SimObject* LockTarget(SimObject* candidate);
    virtual bool      IsTracking(SimObject* tgt);
    virtual void      DoEMCON(int emcon);

    virtual void      ClearAllContacts();

    virtual Mode      GetMode()         const { return mode; }
    virtual void      SetMode(Mode m);
    virtual double    GetBeamLimit()    const;
    virtual double    GetBeamRange()    const;
    virtual void      IncreaseRange();
    virtual void      DecreaseRange();
    virtual void      AddRange(double r);

    Contact*          FindContact(Ship* s);
    Contact*          FindContact(Shot* s);

    // borrow this sensor for missile seeker
    SimObject*        AcquirePassiveTargetForMissile();
    SimObject*        AcquireActiveTargetForMissile();

    // SimObserver:
    virtual bool         Update(SimObject* obj);
    virtual const char*  GetObserverName() const;

protected:
    void              ProcessContact(Ship* contact, double az1, double az2);
    void              ProcessContact(Shot* contact, double az1, double az2);

    Mode              mode;
    int               nsettings;
    int               range_index;
    float             range_settings[8];
    SimObject*        target;

    List<Contact>     contacts;
};

#endif  // Sensor_h