最简单的多线程形式可能在.NET库的Parallel类中，因为我用它来加速我的模拟：

声学模拟的传输线矩阵 [ ^ ]



至于你的另一个问题，你可以尝试一些碰撞检测算法，网上有大量的...

The simplest forms of multithreading is perhaps in the Parallel class in .NET library, as I have used it to speed up my simulation:
Transmission Line Matrix for Acoustic Simulations[^]

As for your other question, you could try some collition detection algorithms, there are loads of the on the web...