Animation Contest

Volume Number: 1

Issue Number: 5

Column Tag: Mousehole

By David E. Smith

Last month we presented a complete application shell program in assembly that

supported desk accessories, cut and past and “about” dialog boxes. But the application

itself was rather boring, simply drawing nested boxes in the window. This month, we

concentrate on the application itself. To eliminate confusion, we will use the simple

shell program from the December issue of MacTutor that simply opens a window. This

allows us to concentrate on the application, which is to animate a paddle and ball. Once

we understand animation, we can combine our paddle and ball program with the shell

program published last month to create a complete Mac game application. But first, the

problem of animation.

The Mousehole recently held a programming contest sponsored by MacTutor on

the problem of moving a paddle with the mouse. “Brett” offered an interesting

solution: “Have the user blink a lot and pretend!” Another interesting solution offered

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