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Member Since 01 Sep 2005
Offline Last Active Jun 11 2012 10:31 AM

Topics I've Started

Phyzicle - the mobile 2D physics sandbox that can bring your imaginations to life!

13 May 2012 - 10:17 PM

Hey guys, I'd like to present my newest app for iOS, Android, and PlayBook:

Phyzicle - the 2D physics sandbox that can bring your imaginations to life! Use a variety of shapes, constraints, and even FLUIDS to build amazing contraptions! Instantly share your creations with friends and check out what others have made!

iOS: http://itunes.apple....box/id502892632
Android: http://play.google.c...llular.phyzicle
Playbook: http://appworld.blac...content/109011/

Facebook: http://www.facebook.com/Phyzicle
Twitter: http://www.twitter.com/PhyzicleSandbox


- Infinite undo/redo
- Multiple snapping options including snap-to-grid and snap-to-object-center
- Tilt-based (accelerometer) gravity, zero gravity, and normal gravity
- Complete customization of all objects, including bounciness, friction, density, collision groups, color, and more
- On-screen action buttons to control motors and thrusters
- Save, load, and upload your creations, and download others’ creations

- Complete interaction with rigid bodies - floating, sinking, pushing, and more
- Multiple mixable colors

Shapes: squares, rectangles, circles, gears, free-form convex/concave shapes

Constraints: springs, rods, welding, pins (free or motorized), thrusters, sliders

Phyzicle includes a comprehensive guide, multiple tutorials, and more!

Found a bug? Want to request a feature? Have something to tell us? Visit the Contact section in the guide! We’re committed to our players and will do our best to fix every bug, implement every feature, and reply to all feedback!

With a multitude of features and such loyal developers, Phyzicle is THE physics sandbox you want to be playing on your mobile device!


23 October 2011 - 10:57 PM


[web] How to avoid spam when users can upload custom levels to server

08 September 2011 - 03:31 PM

Hey, I'm working on a game that allows players to upload and download custom levels and replays. The uploading is done by connecting to my webpage and sending custom level/replay data to a PHP script, which then stores it on the server for review.

Since I have to review all custom content, the end-users will never have an issue. However, *I* might have an issue with people uploading spam data by mimicking my game.

How can I prevent people from mimicking my game and uploading a bunch of spam to fill my server?

UV coordinate on a 2D quadrilateral

25 February 2011 - 12:02 PM

Posted Image
Given the coordinates a, b, c, d, and p, how would I find the normalized UV coordinates of p? (For example, to sample a texture at that point.)

a, b, c, d, and p are 2D (that is, only X,Y coordinates). p will always be inside abcd.

I have no idea where to start. Any ideas?

Primitive physics class question

09 February 2011 - 05:38 PM

We took a quiz in AP Physics B today, and, according to my teacher, I got one of the questions wrong. I don't have the quiz with me at the moment, but here is what I could come up with from memory:
Posted Image
For my solution, I solved for the magnitude of F:
Posted Image
And I solved for the magnitude of the new force, assuming the new charge of both spheres would be -Q/2:
Posted Image
And I came up with the answer F/8.

Am I correct, or am I wrong (and why)?

My teacher said that the magnitude of the new force is equal to just F (no coefficient) because "the total charge is still the same."