Commit 7db06300 authored by Richard Harrison's avatar Richard Harrison
Browse files

Nasal binding for SGTimeStamp via maketimestamp 

usage:

var timer = maketimestamp();

timer.stamp(); # start timing

print("elapsed ",timer.elapsedMSec(),"ms");
parent ff7db27c

src/Scripting/NasalSys.cxx

+42 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <simgear/nasal/cppbind/to_nasal.hxx>

#include <simgear/nasal/cppbind/Ghost.hxx>

#include <simgear/nasal/cppbind/NasalHash.hxx>

#include <simgear/timing/timestamp.hxx>



#include "NasalAddons.hxx"

#include "NasalSGPath.hxx"
@@ -208,6 +209,35 @@ static void f_timerObj_setSimTime(TimerObj& timer, naContext c, naRef value) 


    timer.setSimTime(nasal::from_nasal<bool>(c, value));

}

////////////////////

/// Timestamp - used to provide millisecond based timing of operations. See SGTimeStamp

class TimeStampObj : public SGReferenced

{

public:

    TimeStampObj(Context *c, FGNasalSys* sys) :

        _sys(sys)

    {

    }



    virtual ~TimeStampObj()

    {

    }



    void stamp()

    {

        timestamp.stamp();

    }

    int elapsedMSec()

    {

        return timestamp.elapsedMSec();

    }

private:

    SGTimeStamp timestamp;

    FGNasalSys* _sys;

};



typedef SGSharedPtr<TimeStampObj> TimeStampObjRef;

typedef nasal::Ghost<TimeStampObjRef> NasalTimeStampObj;



///////////////////////////////////////////////////////////////////////////
@@ -556,6 +586,12 @@ static naRef f_makeTimer(naContext c, naRef me, int argc, naRef* args) 
  return nasal::to_nasal(c, timerObj);

}



static naRef f_maketimeStamp(naContext c, naRef me, int argc, naRef* args)

{

    TimeStampObj* timeStampObj = new TimeStampObj(c, nasalSys);

    return nasal::to_nasal(c, timeStampObj);

}



// setlistener(func, property, bool) extension function.  Falls through to

// FGNasalSys::setListener().  See there for docs.

static naRef f_setlistener(naContext c, naRef me, int argc, naRef* args)
@@ -878,6 +914,7 @@ static struct { const char* name; naCFunction func; } funcs[] = { 
    { "parse_markdown", f_parse_markdown },

    { "md5", f_md5 },

    { "systime", f_systime },

    { "maketimestamp", f_maketimeStamp},

    { 0, 0 }

};
@@ -946,6 +983,11 @@ void FGNasalSys::init() 
      .member("simulatedTime", &TimerObj::isSimTime, &f_timerObj_setSimTime)

      .member("isRunning", &TimerObj::isRunning);



    NasalTimeStampObj::init("TimeStamp")

        .method("stamp", &TimeStampObj::stamp)

        .method("elapsedMSec", &TimeStampObj::elapsedMSec)

        ;



    flightgear::addons::initAddonClassesForNasal(_globals, _context);



    // Now load the various source files in the Nasal directory