[casual_games] Game Authoring Language

[James Baker - WDDG/Inferno]

Did you ever run these tests using lookup tables for the sin/cos/tan
functions?
Using lookup tables has been an age old trick to avoiding the strain
that these Math functions can add to the processor.



> -----Original Message-----
> From: casual_games-bounces at igda.org 
> [mailto:casual_games-bounces at igda.org] On Behalf Of Charles Parcell
> Sent: Friday, August 12, 2005 10:59 PM
> To: IGDA Casual Games SIG Mailing List
> Subject: Re: [casual_games] Game Authoring Language
> 
> Here is the Math test we did. These are the results from it 
> being run on machine. specs added for point of reference.
> 
> My System Spec.
> --------------
> Windows XP Pro SP2
> Dual 2.8 P4
> 2 GB RAM
> 
> 
> Flash 8
> -----------
> Fastest Speed = 141
> Average = 144
> 
> Director 10.1
> -------------------
> Fastest Speed = 42
> Average = 43
> 
> Speed increase of Director over Flash
> ------------------------------
> -------------------------
> Fastest Speed = 336%
> Average = 335%
> 
> 
> Just for a clear understanding, I have added a complete copy of code.
> 
> 
> Flash 8
> ------------
> // Frame 1 AS
> doCalc();
> 
> gotoAndPlay(1);
> 
> function doCalc() {
>        var t1:Number = getTimer();
>        for (var i:Number = 0; i < 10000; i++) {
>                Math.sqrt(i);
>                Math.cos(0.01 * i);
>                Math.sin(0.01 * i);
>                Math.tan(0.01 * i);
>                Math.pow(i,i);
>        }
>        trace( getTimer() - t1 );
> }
> 
> 
> Director 10.1
> ----------------------
> -- Frame 1 Lingo
> on exitFrame me
>  t1 = the milliseconds
>  repeat with i = 0 to 10000
>    x = sqrt(i)
>    x = cos(0.01 * i)
>    x = sin(0.01 * i)
>    x = tan(0.01 * i)
>    x = power(i, i)
>  end repeat
>  put the milliseconds - t1
>  _movie.go(_movie.frame)
> end
> --------------------------------
> --------------------------------
> 
> Charles P.
> 
> 
> 
> BRENT SILBY (def-logic) wrote:
> 
> > Hi Charles,
> > Is it possible to post the results of the test function? I'm 
> > interested in comparing its speed to Javascript. Just 
> insane curiosity 
> > :)
> >  
> > I predict JS will be slower, yet sometimes it is 
> surprising. I've been 
> > able to run scripts with over 20 moving screen elements at 
> 50FPS, on a 
> > pretty average machine. Flash often seems to lag with that much 
> > movement. Of course, JS does not have anti-aliasing, so that would 
> > account for a lot of speed difference.
> >  
> > I understand why people stick to Flash, but I really want to put JS 
> > out there. It is a lot more powerful than people give it 
> credit. And 
> > there is a certain "coolness" about being able to design games with 
> > nothing more than a text editor. But that's the geek in me 
> talking :)
> >  
> > Cheers,
> > Brent.
> >
> > /DEF-LOGIC
> > VIDEOGAMES
> > www.def-logic.com <http://www.def-logic.com>/
> >
> > >
> > > Flash 8 test code
> > > -----------------
> > > class test {
> > >       public function test () {
> > >               var t1:Number = getTimer();
> > >               var x:Boolean = true;
> > >               for (var i:Number = 0; i < 50000; i++) {
> > >                       x = this.testFunction(x);
> > >                       if (x) {
> > >                               x = x;
> > >                       } else {
> > >                               x = x;
> > >                       }
> > >               }
> > >               trace ("result = " + (getTimer() - t1) );
> > >       }
> > >       public function testFunction (x:Boolean):Boolean {
> > >               x = not x;
> > >               return x
> > >       }
> > > }
> > >
> >
> >-------------------------------------------------------------
> ----------
> >-
> >
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> >  
> >
> 
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