This package simulates a screw joint with physics totally integrated in the unity engine. A screw advances a step distance in a Y direction while turning. It is achieved by script modifying a configurable joint.这个软件包模拟了一个完全集成在unity引擎中的物理学的螺丝钉。螺丝在转动时在Y方向上前进了一步距离。它是通过脚本修改一个可配置的关节来实现的
