vb写的2d汽车游戏引擎，比较好，大家可以下载去学习。-vb wrote 2d car game engine is better, you can download to learn.

该编码可以在unity3d中利用键盘驱使汽车等四轮模型进行运动行走。-The encoder can use a keyboard-driven cars and other four-wheel models walking in unity3d in motion.