In this series of articles Xianzhong Zhu is going to develop
an online basketball game using the famous two-dimensional physics engine - Farseer under Visual Studio 2010 and Silverlight 4.0 environments.
In particular, we will use the PhysicsHelper kit to help to achieve the goal of basketball moving and collision detection as well as other functions. In this installment, we are mainly going to make preparation work for using Physics Helper. Please note that because there are numerous new characteristics and somewhat traps in using the PhysicsHelper API compared with (and different from) the initial Farseer Engine API we plan to use more space to discuss these questions.