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Category: Great Homebrew
Size: 490 kB
CRC32 Hash: 25273953
MD5 Hash: 1472b6dfe746a86079ddc384795291fc
SHA-1 Hash: 89c79100da52ce7c3ff49de09ce25a2622d435e2
Date added: 22nd-02-2008 Download count: 2180 Last updated: 2008
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Pocket Physics by Tobias Weyand

From the author:
I really like the idea of the popular minigame Crayon Physics: You draw an object on the screen and it instantly becomes physical and interacts with other objects.
The first thing that sprung to my mind when seeing it was "This would be awesome on the DS!" And Pocket Physics is what I came up with after two weeks.
It isn't really a game, but more of a physical construction kit for your pocket. You can design scenes freely by drawing things with the stylus. Things can be solid, like ramps and floors, or dynamic, like balls or boxes.
Like in The Incredible Machine, you can reset the scene, change it, and start the simulation again. It's even more fun if you have a DS Motion, which can be used to control gravity!

Version History
v0.5 (2008-02-22)

* Added the moving tool
* Improved speed (different timing, inactive objects fall asleep)
* Better repeatability
* sketches are now stored in /data/pocketphysics/sketches by default

v0.4 (2008-02-08)

* Saving and loading! (introducing the XML-based .pp file format)
* Smart pin placement: While the pen is on the screen, you can move the pin around. It's position is fixed when you lift the pin. While you drag the pin around, the objects that are about to be pined are highlighted.
* Smart deleting: Deleting also works just smart pin placement. Also, pins can now be deleted.
* Toggle viewing window visibility with select.

v0.3 (2008-01-27)

* larger paper (3x3 screens)
* scrolling using either D-Pad, ABXY, or pen (hold L or R)
* dual screen support (overview on top, zoomed view on bottom)
* open shapes (drawn shapes are only closed if the end is close to the start)
* Using the actual shape for picking => o more accidential deletions
* updated to box2d 2.0 (svn r20)
* using ds hw div/sqrt in box2d
* if simulation is behind time, 2 steps are performed at once => subjectively faster
* faster and better drawing code
* pins are hidden during simulation

v0.2 (2008-01-03)

* Pins! Pin things to the background or pin two things together
* Numerical fixes in Box2d => (Hopefully) better stability
* Removed dynamic timestep adjustment => Subjectively slower, but more reproducible results
* Standby mode

v0.1 (2007-12-23)

* initial release