# ****************************************************************************
# CUI
#
# The Advanced Framework for Simulation, Integration, and Modeling (AFSIM)
#
# The use, dissemination or disclosure of data in this file is subject to
# limitation or restriction. See accompanying README and LICENSE for details.
# ****************************************************************************

include_once common_timeline_scripts.txt
include_once air_combat_maneuvers.txt
include_once weapon_defs.txt

behavior timeline_delay

   script_debug_writes off

   script_variables
      WsfQuantumTaskerProcessor processor;
   end_script_variables

   on_init
      if (PROCESSOR.IsA_TypeOf("WSF_QUANTUM_TASKER_PROCESSOR"))
      {
         processor = (WsfQuantumTaskerProcessor)PROCESSOR;
      }
   end_on_init


   #returns true (to wait) if no free target can be shot at (current range)
   #if target already has weapon on it, it is ignored
   script bool WaitToTurnAndShoot(Array<WsfTrack> targets)
      #only consider free targets (a target with no weapons on it)
      #compare max weapon range to each free target
      #calculate time to turn & face for a shot
      #return false if any target can be turned on & engaged
      foreach(WsfTrack target in targets)
      {
         WsfLocalTrack masterTarget = GetMasterTrackByName(PLATFORM, target.TargetName());
         if (!masterTarget.IsValid())
         {
            continue;
         }
         bool checkPeerWeapons = false;

         if (FiredOn(PLATFORM, masterTarget, checkPeerWeapons))
         {
            #LBM TODO - figure out time until weapon terminates
            #           compare that to turn time too
            #           dont necessarily skip this target
            continue;
         }

         double weaponMaxRange = 0.0;
         WsfWeapon maxRangeWeapon;
         for (int i=0; i < PLATFORM.WeaponCount(); i+=1)
         {
            WsfWeapon weapon = PLATFORM.WeaponEntry(i);
            if (WeaponCapableAvailableAgainstThreat(weapon, masterTarget))
            {
               double weaponRange = MaxRange(PLATFORM,weapon,masterTarget);
               if (weaponRange > weaponMaxRange)
               {
                  weaponMaxRange = weaponRange;
                  maxRangeWeapon = weapon;
               }
            }
         }

         if (maxRangeWeapon.IsValid())
         {
            #valid weapon found with an intelligible max range
            double targetRange = PLATFORM.GroundRangeTo(masterTarget.CurrentLocation());
            #double weaponMaxRange;
            double rangeRemaining = targetRange - weaponMaxRange;
            if(rangeRemaining <= 0)
            {
               return false;
            }

            #targets speed towards me:
            double hisClosingSpeed = masterTarget.Speed() * MATH.Cos(masterTarget.RelativeBearingTo(PLATFORM));
            #my avg speed towards him (assuming an immediate turn towards him):
            double myMinClosingSpeed = PLATFORM.Speed() * MATH.Cos(PLATFORM.RelativeBearingTo(masterTarget));
            double myMaxClosingSpeed = PLATFORM.Speed();   #assumes I turn & face
            double myAvgClosingSpeed = (myMinClosingSpeed+myMaxClosingSpeed)/2.0;
            #closing speed to use:
            double closingSpeed = hisClosingSpeed + myAvgClosingSpeed;
            extern double mGeesToTurnWith;
            double turnTime = TimeToTurnAndFace(PLATFORM.MakeTrack(), masterTarget.CurrentLocation(), mGeesToTurnWith);
            if (turnTime >= rangeRemaining/closingSpeed)
            {
               return false;   #dont wait, time to turn & shoot this guy!!!
            }
         }
      }
      return true;
   end_script


   precondition
      writeln_d(PLATFORM.Name(), " precondition  timeline_delay,  T=", TIME_NOW);
      if (!processor.IsValid())
      {
         return Failure("behavior not attached to a WSF_QUANTUM_TASKER_PROCESSOR");
      }

      extern bool mRequiredToSupportWeapons;
      if (mRequiredToSupportWeapons == true && PLATFORM.WeaponsActiveFor(WsfTrackId()) > 0)
      {
         return Failure("required to support active weapons - do not delay");
      }

      WsfTask timeline = GetTimeLineTask(processor);
      if (!timeline.IsValid())
      {
         return Failure("not assigned a TIMELINE task");
      }

      extern WsfLocalTrack mNearestTimeLineTarget;
      if (!mNearestTimeLineTarget.IsValid())
      {
         return Failure("no TIMELINE target to fly against");
      }


      #compare risk level with range to nearest target
      #only delay if risk MED:  past DOR and (want to shoot but out of range or waiting on existing shot)
      #              risk HIGH: past MAR and (want to shoot but out of range or waiting on existing shot)
      string RISK = timeline.AuxDataString("RISK");
      if (RISK == "HIGH")
      {
         double MAR          = timeline.AuxDataDouble("MAR");   #range (meters)
         double slantRange   = PLATFORM.GroundRangeTo(mNearestTimeLineTarget.CurrentLocation());
         if (slantRange > MAR)
         {
            return Failure("HIGH RISK agent outside of MAR, dont bother delaying");
         }
         Array<WsfTrack> targets = (Array<WsfTrack>)timeline.AuxDataObject("targets");
         return WaitToTurnAndShoot(targets);
      }
      else if (RISK == "MEDIUM")
      {
         double DOR          = timeline.AuxDataDouble("DOR");   #range (meters)
         double slantRange   = PLATFORM.GroundRangeTo(mNearestTimeLineTarget.CurrentLocation());
         if (slantRange > DOR)
         {
            return Failure("MEDIUM RISK agent outside of DOR, dont bother delaying");
         }
         Array<WsfTrack> targets = (Array<WsfTrack>)timeline.AuxDataObject("targets");
         return WaitToTurnAndShoot(targets);
      }
      else #if (RISK == "LOW")
      {
         return Failure("LOW RISK agent does not go past DOR, no need to delay");
      }
   end_precondition

   on_new_execute
      PLATFORM.Comment("delay");
   end_on_new_execute

   execute
      #TODO - select beam or posthole or whatever
      Beam(PLATFORM, mNearestTimeLineTarget);
   end_execute

end_behavior