Re:[pygame] Re: The gsoc project physics engine, features.

[帆 张 <zhangfanfox@xxxxxxxxxxxx>]

Hi Peter:

 

Thank you, Your idea is very good, It's an type of unequal constraint joints. In fact, current code framework is open for more extensions of joints, I'll write documents of how to use and how to write further extensions or patches soon. of course, This joint can be implemented by any of us. The current project is just a rudiment (even coding and debugging are not all finished yet), I hope you can work with us to make it better, Thank you again.

 

Best Wishes

Zhang Fan

Peter Gebauer <peter.gebauer@xxxxxxxxxxxxxxxxxxxxx> 写道：

Hello again.

Is there a list of planned features for the finished module?
Specifically, I'm thinking of joint restrictions on rotation, as an example

joint.restriction = 10, 349 # joint can only rotate between 10 and 349
# degrees.
joint.restriction = -10, 10 # joint can only rotate between 350 (-10) and 10
# degrees.

It would also be really sweet if one could apply a target angle and applied
force to reach that target angle, that way you could simulate things
bending

joint.target_angle = (90, 2.0) # whenever the joint is rotated away from 90
# degrees angle, apply 2.0 force in the
# correct direction to work it's way towards
# 90 degrees.
joint.target_angle = (0, inf) # unbendable, joint stuck at 0 degrees.

Maybe there's a better way to achieve this? Anyway, if something like this
is implemented it will be very easy to make ragdolls, springs, etc.

/Peter


On 2008-06-19 (Thu) 12:17, 帆 张 wrote:
> Hi ,
>
> Thank you very much, I'd like to see your advices and get help from you. I also want to tell the difference between chipmunk(and Pymunk) and this project, this one is not separated with python, all of its basic data structures are based on python data structures, which means it can be integrated in python seamlessly . Also some classes are targeted to integrate physics updating and pygame sprite rendering, which means user can write their physics games more easily.
> API defines and my working progress are on my yahoo blog: http://i.cn.yahoo.com/zhangfanfox/blog/ , and current working code is on a branch of pygame svn: svn://seul.org/svn/pygame/branches/physics
>
> Best wishes
> Zhang Fan
>
>
> Peter Gebauer 写道：
> Hi!
>
> I read Zhang Fan's post regarding his gsoc project, I've been looking to do
> something similar, a Python extension for an already existing library.
> So far I've extended Chipmunk partially over a few days of prototyping, but
> there's no point in having two projects doing the same thing, I'd like to
> know a bit bout the plans of the physics module for PyGame. (if you're
> reading this, Zhang)
> I could also help out with some testing/patching for the C Python stuff.
>
> /Peter
>
>
>
> ---------------------------------
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