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/*  Project Starshatter 4.5
    Destroyer Studios LLC
    Copyright © 1997-2004. All Rights Reserved.

    SUBSYSTEM:    Stars.exe
    FILE:         SeekerAI.h
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Seeker Missile (low-level) Artifical Intelligence class
*/

#ifndef SeekerAI_h
#define SeekerAI_h

#include "Types.h"
#include "SteerAI.h"
#include "SimObject.h"

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

class Ship;
class Shot;

class SeekerAI : public SteerAI
{
public:
   SeekerAI(SimObject* s);
   virtual ~SeekerAI();

   virtual int       Type()      const { return 1001; }
   virtual int       Subframe()  const { return true; }

   virtual void      ExecFrame(double seconds);
   virtual void      FindObjective();
   virtual void      SetTarget(SimObject* targ, System* sub=0);
   virtual bool      Overshot();

   virtual void      SetPursuit(int p)  { pursuit = p;    }
   virtual int       GetPursuit() const { return pursuit; }

   virtual void      SetDelay(double d) { delay = d;      }
   virtual double    GetDelay() const   { return delay;   }

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

protected:
   // behaviors:
   virtual Steer     AvoidCollision();
   virtual Steer     SeekTarget();

   // accumulate behaviors:
   virtual void      Navigator();

   virtual void      CheckDecoys(double distance);

   Ship*             orig_target;
   Shot*             shot;
   int               pursuit;    // type of pursuit curve
                                 // 1: pure pursuit
                                 // 2: lead pursuit

   double            delay;      // don't start seeking until then
   bool              overshot;
};

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

#endif SeekerAI_h