摘要： http://code.google.com/p/cyber2d/wiki/p2dTutorial————————————————————————————————————————————————————————LabelsjavaSE 1.4 2d engine collisions forces IntroductionHomepage: http://www.cokeandcode.com/phys2d/ Try there demo box! It is obvious than this tutorial. phys2d is physical engine. It means tha 阅读全文