/******************************************************************************/
#include "stdafx.h"
namespace EE{
/******************************************************************************/
Motion& Motion::clear()
{
   skel_anim=null;
   time     =0;
   blend    =0;

   time_prev=time_delta=0;
   return T;
}
Motion& Motion::set(AnimatedSkeleton &anim_skel, C Str &animation)
{
   clear();
   skel_anim=anim_skel.findSkelAnim(animation);
   return T;
}
Motion& Motion::set(AnimatedSkeleton &anim_skel, C UID &anim_id)
{
   clear();
   skel_anim=anim_skel.findSkelAnim(anim_id);
   return T;
}
/******************************************************************************/
Bool Motion::eventAfter   (CChar8 *name            )C {return skel_anim ? skel_anim->eventAfter   (name    , time_prev            ) : false;}
Bool Motion::eventOccurred(CChar8 *name            )C {return skel_anim ? skel_anim->eventOccurred(name    , time_prev, time_delta) : false;}
Bool Motion::eventBetween (CChar8 *from, CChar8 *to)C {return skel_anim ? skel_anim->eventBetween (from, to, time_prev, time_delta) : false;}
Flt  Motion::eventProgress(CChar8 *from, CChar8 *to)C {return skel_anim ? skel_anim->eventProgress(from, to, time                 ) :     0;}

Bool Motion::eventAfter   (Flt event_time  )C {return skel_anim ?         time>=event_time                         : false;}
Bool Motion::eventOccurred(Flt event_time  )C {return skel_anim ? EventOccurred(event_time, time_prev, time_delta) : false;}
Bool Motion::eventBetween (Flt from, Flt to)C {return skel_anim ? EventBetween (from, to,   time_prev, time_delta) : false;}
Flt  Motion::eventProgress(Flt from, Flt to)C {return skel_anim ?         LerpR(from, to,   time                 ) :     0;}
/******************************************************************************/
Bool Motion::updateAuto(Flt blend_in_speed, Flt blend_out_speed, Flt time_speed)
{
   if(!is())return false; // return false if the motion isn't valid and can be deleted

   if(time < skel_anim->length()) // if not finished
   {
         blend+=blend_in_speed*Time.d(); // blend in
      if(blend>=1) // if fully blended
      {
         blend     =1;
         time_prev =time;
         time_delta=time_speed*Time.d();
         time     +=time_delta;
      }
   }else // if finished
   {
         blend-=blend_out_speed*Time.d(); // blend out
      if(blend<=0) // if blended out
      {
         blend    =0;
         skel_anim=null;
         return false;
      }
   }
   return true;
}
Bool Motion::updateIn(Flt blend_in_speed, Flt time_speed)
{
   if(!is())return false; // return false if the motion isn't valid and can be deleted

      blend+=blend_in_speed*Time.d(); // blend in
   if(blend>=1) // if fully blended
   {
      blend     =1;
      time_prev =time;
      time_delta=time_speed*Time.d();
      time     +=time_delta;

      if(time >= skel_anim->length())return false; // if finished
   }
   return true;
}
Bool Motion::updateOut(Flt blend_out_speed)
{
   if(!is())return false; // return false if the motion isn't valid and can be deleted

      blend-=blend_out_speed*Time.d(); // blend out
   if(blend<=0) // if blended out
   {
      blend    =0;
      skel_anim=null;
      return false;
   }
   return true;
}
/******************************************************************************/
Bool Motion::save(File &f)C
{
   if(!skel_anim)f.cmpUIntV(0);else // version #0 specifies totally empty motion (which doesn't require additional data, and uses only 1 byte of storage)
   {
      f.cmpUIntV(1); // version
      f.putAsset(skel_anim->id());
      f.putMulti(blend, time, time_prev, time_delta);
   }
   return f.ok();
}
Bool Motion::load(File &f, C AnimatedSkeleton &anim_skel)
{
   switch(f.decUIntV()) // version
   {
      case 0: clear(); return f.ok();

      case 1:
      {
         skel_anim=anim_skel.findSkelAnim(f.getAssetID());
         f.getMulti(blend, time, time_prev, time_delta);
         if(f.ok())return true;
      }break;
   }
   clear(); return false;
}
/******************************************************************************/
}
/******************************************************************************/