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Chipmunk Physics • View topic - Problev with "angular velocity limit"

Problev with "angular velocity limit"

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Problev with "angular velocity limit"

Postby DeniZka » Thu Feb 28, 2013 12:24 am

Hello masters. I got a problem with angular velocity limit
I'm triing to simulate real truck ang gravity params with chipmunk and stuck with angular velocity limitation.

Problem:
Truck gears multiply engine torque on the wheels to huge number :shock: . To prevent uncontroled roration I used agnularVelocityLimit function on driving wheels. But with this torque(look img) velocity not even get to maximal avalable (look img). With lower limit (about 4) real velocity is from 0 to 1 =(
Please advice how to solve.

Another problem:
When ang.vel.limit is set and wheels are on slope them accelerated by gravity over the limit

Additionaly:
1) Friction set to 1.0 for ground and wheels
2) With less gravity situation a bit better (but not real)
3) With no friction velocity get limit (but no move)

On image: truck trying to go backward.
Sorry for my french...
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DeniZka
 
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Re: Problev with "angular velocity limit"

Postby slembcke » Fri Mar 01, 2013 12:32 pm

I'm not sure how the angular velocity limit alone could have done that. Do you also have damping enabled or some other joints that might be causing it?
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slembcke
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Re: Problev with "angular velocity limit"

Postby DeniZka » Sun Mar 03, 2013 1:46 am

No damping set for space
Wheels and body connected by PinJoint
If all wheels are driving - situation a bit better but still sad
Can i share sources? on python
I'll try to do a test just for circles...

I using pymunk 3.0.0 May be it's old lib with that kind of bug?
DeniZka
 
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