Could be good. I tried to check out the demo but it crashed my
browser. :) I'm sure that's not really indicative of the engine, and
more of my browser's stability. I did look through the code and found
that it does a lot of memory allocation in it's inner loops (Verlet
update step in particular), and that it uses floating point math,
though it looks like there is a branch that uses fixed point that
might be worth trying out.
-Anton
On Mar 30, 2:41 pm, Streets Of Boston <flyingdutc...@gmail.com> wrote:
> I wonder how well this one works on Android:
>
> http://code.google.com/p/simpull/
>
> -- Anton Spaans
>
> On Mar 30, 4:58 pm, Anton <socialhac...@gmail.com> wrote:
>
> > I have a simple 2D physics engine written and running. It uses
> > the now famous Jacobson physics tricks (Verlet integration and hard
> > constraints). I can manage 40 balls on the screen, with fill n^2
> > interaction between balls. I am working on spatial data structure
> > optimizations now to improve the computational complexity of the
> > collision detection code. I run the constraint update loop five times
> > per frame and get 30 frames per second. Once the engine is up and
> > running there are no memory allocations done in my program. And once
> > the system settles down from the app launch there are very few GC
> > events from other programs. Though they do still happen. Viewing
> > LogCat I see a GC every 10 or 20 seconds because of some background
> > application. But between those events I get a consistent frame rate.
> > I am using OpenGL for my rendering.
>
> > -Anton
>
> > On Mar 30, 1:14 pm, mscwd01 <mscw...@gmail.com> wrote:
>
> > > Does anyone know of, or have implemented, a physics engine which runs
> > > smoothly in Android?
>
> > > I have spent the last couple of days trying Phys2D and JBox2D, however
> > > both perform very poorly - I am struggling to get even a few objects
> > > to simulate smoothly as frequent garbage collection spoils it.
>
> > > One question I do have is will these run smoother on an actual G1
> > > device or is the performance of the emulator accurate?
>
> > > Thanks- Hide quoted text -
>
> > - Show quoted text -
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