如何根据需求或功能设计类

Question

I'm struggling with class design. Sometimes I think that all I have read about class organization, class diagram and class design can not apply to the concrete project. I want to create Snake game in Java using MVC or MVP architecture.

There are some requirements:

• The snake and food for snake should be drawn on screen
• It should be displayed current game score
• The snake should move using key arrow
• The food should be grouped so each group have some amount of point and color
• Game speed should be determined on score threshold

The question is how to organize classes (with methods and "all") according that requirements? Maybe someone have a book or link to suggest with guidance or examples.

Please could you share your rule of thumb for creating and organizing classes through this example?

Answer 1

Here is an example of a simple Snake game clone in Java that you might refer to for ideas on how to structure things.

Since you ask for a book recommendation, I would recommend a book that helped me immensely in grasping object oriented analysis and design. It teaches you by solving real problems step by step. It is quite different as it does not follow the typical flow of technical books on the matter. It looks at gradually harder problems pointing at potential problems and explaining the important concepts along the way.

The book is called Head First OOA&D . I recommend it because it is an easy (and sometimes even funny) read, with lots of samples in Java and on top of that, there is a game example in it. So be sure to check it out! Even outside the context of your problem I think you can benefit from it the way I did.

Good luck!