说明：  MVC设计模式早在面向对象语言Smalltalk-80中就被提出并在此后得到业界的广泛接受。它包括三类对象：（1）模型（Model）对象：是应用程序的主体部分。（2）视图（View）对象：是应用程序中负责生成用户界面的部分。（3）控制器（Control）对象：是根据用户的输入，控制用户界面数据显示及更新Model对象状态的部分。本程序尝试用MVC模式制作了一个简单的贪吃蛇游戏。
(MVC design patterns in object-oriented language Smalltalk-80 was raised on and thereafter the industry's widely accepted. It includes three types of objects : (1) model (Model) objects : application to the principal. (2) View (View) Object : is the application procedure for the generation part of the user interface. (3) controller (Control) Object : according to the input, the user interface control and update data objects Model of the state. The procedures to try to MVC model produced a simple game of Snake.)