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Question by jasonm87 · Apr 09, 2015 at 04:36 AM · physicsphysics2dprofilerprofiling

Profiler mystery with Physics2d

Hi,

I am using the profiler and I see hundreds of calls under Physics2d.contactPreSolveAcquire

The objects are listed as N/A and their values are 0.

Under Physics2d.Simulate I get a 25% usage that gradually slows eveything down. It is also created by a N/A object.

How do I find the problem with no more info?

Thanks

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avatar image MelvMay ♦♦ · Apr 09, 2015 at 09:00 AM 0
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That is called prior to each contact being solved by Box2D but it's doing $$anonymous$$imal work there, just storing away the contact information. You should always try to keep the number of contacts being solved to a $$anonymous$$imum, however a few hundred contacts should be acceptable depending on the device its being run on.

25% of the cycle-time taken solving hundreds of contacts per step isn't too bad. If everything really slows down then it'll probably be because the number of contacts grows much higher?

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