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mopius

Thinking about what mobile phones can do except messaging and voice calls is one of my main interests. At the department of Mobile Computing at the University of Applied Sciences in Hagenberg (Austria), I can work on those ideas every day by collaborating with students, researching and - well - thinking.

 

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Andreas Jakl's Forum Nokia Blog

Mobile Physics

mopius | 11 March, 2009 19:21

Chipmunk is an open source physics engine and is now available for S60.
Draw abstract objects on the screen; they will instantly get physical properties!
Physics engines simulate behaviour and motion of objects in a virtual world. With the increased processor resources available on today’s PCs, almost every game integrates a more or less advanced physics engine.

Even if the dedicated physics PCI card for the PC, the PhysX by AGEIA, did not really succeed in reaching the mass market, it increased the awareness that the game experience is greatly enhanced if physics are accurately simulated. Nowadays, NVidia has bought this company and physics simulations are often calculated directly on the 3D graphics hardware.

The oldest game I can remember that heavily relied on physics simulation was called The Incredible Machine. Released in 1993, players had to place various objects in a 2D plane to solve puzzles. This included placing machines, lights, ropes, balls and much more.

Another game, Bridge Builder, has now been around for quite some time (first release in 2000) and also uses physics as the main gameplay element. Players have to build bridges and ensure that they do not break. Later examples like World of Goo follow a similar basic concept, but make the game a lot more accessibly by integrating a different scenario and pleasant graphics.

Another possibility for games that mainly rely on physics simulation is represented by Crayon Physics. In a pre-defined scenario, players have to move an abstract object (like a circle) from its starting position to a target. This can be done by drawing 2D objects (like other circles that behave like balls, rectangles, or ropes); physical attributes are applied to those. Of course, solving the levels gets very challenging over time.

Mobile Physics

Even if advanced 3D physics like found in Half Life 2 would still be too much for today’s mobile devices, they are certainly up to the task of running 2D physics engines. A good example is Numpty Physics, available for free for the Maemo-platform.

David Berger, a student in the 3rd semester of Mobile Computing in Hagenberg, has now ported the open source 2D physics engine called Chipmunk to the S60 platform.

With the help of the OpenC++ libraries, it was possible to run the engine without any serious modifications. As the foundation for the user interface, he used the Mobile Paint example from Nokia. All objects that you draw on the screen instantly get physical properties and move according to the current gravity level as well as collisions with other objects.

David’s video on YouTube demonstrates how well the engine works. Unfortunately, there were some problems with regards to the screen update and the TV out when drawing – but as you can see in the video, the engine works totally fluid and fast. Now, I’m looking forward to seeing the first physics-based games on the S60 platform!

 

More information, the download of the demo plus source code is available on David’s website as well as on the project website on symbianresources.com.

RSSComments

More mobile physics

ptrmn | 11/03/2009, 20:00

Check out our demo from MWC as well: http://www.youtube.com/watch?v=FtR_zA9elrM

Limitless Possibilities

SoulBlade | 14/03/2009, 12:52

This field is definitely something to look forward to.
Imagine drawing inanimate objects(through hardwares such as the camera and accelerometer) from the actual physical environment, giving them life, and pushing them back into the world to see them work.

Re: Mobile Physics

acotas548 | 19/05/2009, 09:39

Very nice idea! It would be cool to see an option to use the phone's camera as a potential digital compass solution since most phones have cams, but not many have compasses just yet. I can envision Google Maps incorporating this into its Street View technology as well. It will be interesting to see where this new dimension for mobile goes. Keep up the great work.
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Re: Mobile Physics

GarryWert | 25/07/2009, 13:57

It would be cool to see an option to use the phone's camera as a potential digital compass solution since most phones have cams, but not many have compasses just yet. I can envision Google Maps incorporating this into its Street View technology as well. It will be interesting to see where this new dimension for mobile goes.
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Wonderful

manishkapoor123 | 13/09/2009, 11:48

Wow finaly. I was waiting for someone to make a good reliable JS physics Engine. Maybe it;s not the most sought-after thing on the tubes but there’s definitely some stuff that could benefit from it.
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Re: Mobile Physics

McCain | 01/10/2009, 09:47

This field is definitely something to look forward to. Concepts are very good and very nice idea as well.

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Nice article, very helpful. Thanks!

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Re: Mobile Physics

manishkapoor123 | 02/10/2009, 20:05

It would be great if you could make it work with the accelerometer, so if you rotate the mobile, the objects fall around as well

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Re: Mobile Physics

raykay | 03/10/2009, 00:55

Garry, I think the Google Maps street view incorporated in a phone is becoming a reality now. I see so many college students on their iphones and smartphones doing just that, making their way around the university campus. Lucky dogs.

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Re: Mobile Physics

illusion_life | 09/10/2009, 13:11

Unfortunately, there were some problems with regards to the screen update and the TV out when drawing. That is what i came to know.
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Re: Mobile Physics

romankates | 09/10/2009, 15:55

I think the Google Maps street view incorporated in a phone is becoming a reality now. I see so many college students on their
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Mobile Physics

jacyle | 12/10/2009, 18:13

In both cases, the net force acting on the pencil is zero. According to Newton’s Second Law of Motion, if the net force acting on a mass is zero, the acceleration of the object’s center of mass is zero. Since our object was initially at rest, the object is in translational equilibrium. This means the center of mass is not moving. Yet, the object can still have motion. In the case of forces not parallel to the axis of the pencil, the pencil rotated. It was not in complete equilibrium. We need another formula for rotational equilibrium.

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Re: Mobile Physics

samchase | 12/10/2009, 23:00

I am too planning for a mobile blog, but this time its about my collection. I guess im having all models of nokia mobile phone and now ill be writing about my own experiences and will share with others. Hertz Amsterdam

Re: Mobile Physics

McCain | 18/10/2009, 13:57

Re:Mobile Physics

christmassms | 25/10/2009, 19:26

Post is very nice and informative. Thanks

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Mobile Physics

san diego real estate | 10/11/2009, 20:00

Post is really very nice and informative. Thanks for sharing it.
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Mobile Physics

slackgen99 | 11/11/2009, 21:55

Unfortunately, there were some problems with regards to the screen update and the TV out when drawing. That is what i came to know.free online games

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