General

[DaWolfgang]

Hi,

I want to use Box2D physics engine for my game. Box2D is not written in C# but there are some ports available. Box2DX is outdated (no Fixtures etc.) and Farseers Physics Engine seems to be slow (http://community.eu.playstation.com/t5/General/Physics2d-is-limited/m-p/15978235/highlight/true#M104...).

Then I found Box2CS (http://code.google.com/p/box2c/). It's a wrapper around the original C++ Box2D. Sounds good: Fast and up to date.

But as soon as I try to create a new World ( mWorld = new World(gravity, true); ) I get the following exception:

System.MethodAccessException: Attempt to access a private/protected method failed.
  at System.Security.SecurityManager.ThrowException (System.Exception ex) [0x00000] in <filename unknown>:0

  at (wrapper managed-to-native) Box2CS.World/NativeMethods:b2world_constructor (Box2CS.Vec2,bool)

  at Box2CS.World..ctor (Vec2 gravity, Boolean doSleep) [0x00000] in <filename unknown>:0

Does anyone now what I could do to get Box2CS work?

Thanks,

Wolfgang

[TheRealSerapth]

Thats the problem, you can't invoke native code, so a wrapper around a C++ library simply isn't going to work.  

Try this one ( http://code.google.com/p/box2dx/ ), it appears to be a pure C# implementation.

Download it, compile it as a PS Suite library and see how that goes.

[DaWolfgang]

Thanks for your answere. I already have tried Box2DX. Unfortunately it's an old version (no Fixtures, no kinematic bodies). I will give Box2D.XNA an(other) try.

[TheRealSerapth]

Actually I did some testing and Box2dx uses unsafe code anyways, which will compile on PSS but not run.

[telos157]

which unsafe code u refering to?

[TheRealSerapth]

I forget specifically , there were 5 or 6 methods tagged unsafe. It would probably be trivial to rewrite those methods. When I say unsafe I mean marked with the keyword unsafe.