Hi, all:

This is my last semester at DigiPen Institute of Technology, so I decided to give a lecture to my fellow schoolmates on constraint-based physics to pass down a few things I know about implementing game physics.

Here are the slides I used:
http://allenchou.net/slides-constraint-based-physics/

Below are the main points I went over in this lecture:

• The flow chart of a typical physics engine.
• How to derive velocity constraints.
• Contact constraints, including normal and tangential resolutions.
• Solving multiple constraints simultaneously (block-solving).

You don't really need to implement a full-blown physics engine with narrow phase, broad phase, and other fancy stability features like contact caching and warm starting, just in order to get something cool. In the end, I presented a simple constraint, the mouse constraint, as an exercise homework.

I encourage anyone who hasn't done any physics-related stuff to try implementing mouse constraints with a simple semi-implicit Euler integrator; you will end up with something you can drag around, reacting and looking physically "correct".

If you are not familiar with motion dynamics, I also wrote two posts on its fundamentals and implementation examples, please do check them out:
http://allenchou.net/2013/12/game-physics-motion-dynamics-fundamentals/
http://allenchou.net/2013/12/game-physics-motion-dynamics-implementations/

Lastly, here's a full list of the posts I have written on game physics:
http://allenchou.net/game-physics-series/

As always, please tell me if you think I've got something wrong. Thanks

Allen's pretty legit, as are his lectures and slides. Definitely look over this material if you have an interest in the subject.

Nice work Allen, I'm pretty sure you're not going to have a problem getting a job after graduation.

Nice work Allen, I'm pretty sure you're not going to have a problem getting a job after graduation.

Actually, I already did. I'm going to work at Naughty Dog

Very nice. Thanks for the info.

Bookmarked!