Artificial-Lives Pets Bobo Bird   
by zhangxi   

It is a bird whose name is BoBo.It exists as a pet on your computer desktop,where it is alive.BoBo not only can make conversation with you but also is very bright.
It likes eating cookies, listening to music and reading pet's magazine..As an accountant,BoBo always play the leading role ,though it hates the job.Its favourite is making an interesting conversation with you,its owner.
It is known that there are two main ways to design a computer program . One is Structured Design(SD),the other is Object-Oriented Design(OOD).But this program is neither the SD nor OOD.
It is a new design idea called Driven by Desire Design(DDD). Be brief, the design adjusted every action of the biology to its desire by the parameter of its desire.