Timestep schemes for physics simulations

Posted by ktodisco on Game Development See other posts from Game Development or by ktodisco
Published on 2012-10-24T03:09:51Z Indexed on 2012/10/24 5:28 UTC
Read the original article Hit count: 395

Filed under:

physics

|

Performance

The operations used for stepping a physics simulation are most commonly:

Integrate velocity and position
Collision detection and resolution
Contact resolution (in advanced cases)

A while ago I came across this paper from Stanford that proposed an alternative scheme, which is as follows:

Collision detection and resolution
Integrate velocity
Contact resolution
Integrate position

It's intriguing because it allows for robust solutions to the stacking problem. So it got me wondering...

What, if any, alternative schemes are available, either simple or complex? What are their benefits, drawbacks, and performance considerations?

© Game Development or respective owner

Related posts about physics

How to implement friction in a physics engine based on "Advanced Character Physics"

as seen on Game Development - Search for 'Game Development'
I have implemented a physics engine based on the concepts in the classic text Advanced Character Physics by Thomas Jakobsen. Friction is only discussed very briefly in the article and Jakobsen himself notes how "other and better friction models than this could and should be implemented." Generally… >>> More
Approximating walking physics via simpler sliding physics

as seen on Game Development - Search for 'Game Development'
I am modeling walking insects. I implement them as cuboids and use forces (including friction and drag), to control motion. However, the movement characteristics of this 'sliding box' physics don't match those due to a legged creature. For example, legged creatures near-instantly accelerate to… >>> More
Sharing data between graphics and physics engine in the game?

as seen on Game Development - Search for 'Game Development'
I'm writing the game engine that consists of few modules. Two of them are the graphics engine and the physics engine. I wonder if it's a good solution to share data between them? Two ways (sharing or not) looks like that: Without sharing data GraphicsModel{ //some common for graphics and physics… >>> More
Keep basic game physics separate from basic game object? [on hold]

as seen on Game Development - Search for 'Game Development'
If anybody has dealt with a similar situation I'd be interested in your experience/wisdom, I'm developing a 2D game library in C++, I have game objects which have very basic physics, they also have movement classes attached to differing states, for example, a different movement type based on whether… >>> More
How can I split Excel data from one row into multiple rows

as seen on Super User - Search for 'Super User'
Good afternoon, Is there a way to split data from one row and store to separate rows? I have a large file that contains scheduling information and I'm trying to develop a list that comprises each combination of course, day, term and period per line. For example I have a file similiar to this: Crs:Sn… >>> More

Related posts about Performance

Improving VPN performance - stronger encryption = more performance?

as seen on Server Fault - Search for 'Server Fault'
I have a site-to-site VPN set up with two SonicWall's (a TZ170 and a Pro1260). It was suggested to me that turning off encryption (so the VPN is tunneling only) would improve performance. (I'm not concerned with security, because the VPN is running over a trusted line.) Using FTP and HTTP transfers… >>> More
Inaccurate performance counter timer values in Windows Performance Monitor

as seen on Stack Overflow - Search for 'Stack Overflow'
I am implementing instrumentation within an application and have encountered an issue where the value that is displayed in Windows Performance Monitor from a PerformanceCounter is incongruent with the value that is recorded. I am using a Stopwatch to record the duration of a method execution, then… >>> More
Excel-based Performance Reviews transformed into Web Application for Performance Management

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
HR TMS provides enterprise talent management solutions for healthcare, retail and corporate customers, focusing on performance management, compensation management and succession planning. As the competency of nurses and other healthcare workers is critical, the government, via the Joint Commission… >>> More
How to save a perfmon Performance Counter as a textfile (Reliability and Performance Monitor Version

as seen on Server Fault - Search for 'Server Fault'
Now the file gets saved as blg, but I would like a txt versin to import in Excel. >>> More
SQLAuthority News – A Successful Performance Tuning Seminar at Pune – Dec 4-5, 2010

as seen on SQL Authority - Search for 'SQL Authority'
This is report to my third of very successful seminar event on SQL Server Performance Tuning. SQL Server Performance Tuning Seminar in Colombo was oversubscribed with total of 35 attendees. You can read the details over here SQLAuthority News – SQL Server Performance Optimizations Seminar – Grand… >>> More