[racket] My PLT->Racket porting experience

From: Drew Hess (drew.hess at gmail.com)
Date: Thu Mar 10 13:44:15 EST 2011

On Thu, Mar 3, 2011 at 9:09 AM, Drew Hess <drew.hess at gmail.com> wrote:
> OK, folks, here is a small package that demonstrates all of the play-sound
> issues I'm having, in one go:
> http://drewhess.com/drew-bootstrap.zip
> Install both of the teachpacks. The -no-runtime-path version of the
> teachpack is nearly identical to the version I used with PLT
> Scheme 4.2.5, and in fact will probably compile in PLT if you replace
> the racket/* requires with plt/* or whatever the namespace was in
> the PLT days. The other version is the one I whipped up to fix the
> relative pathname issues. (Please don't judge the quality of the code
> in those changes! I wrote them hastily at the end of a very frustrating
> debugging session :)
> Load the drew-game.ss game. It uses the "fixed" version of the teachpack.
> It should work fine, except for the fact that, on Mac OS X, the game
> will pause when a sound is played. This demonstrates the inverted-ness
> of the play-sound async flag on that platform. (The Windows version will
> not pause when the sound is played; however, while we're on the subject,
> it is annoying that play-sound on Windows cannot dynmically mix sounds
> like the Mac version does; it just stops playing any sound that it was
> already playing and starts playing the new one.)
> Load the drew-game-no-runtime-path.rkt game in Racket 5.1. This version
> uses the -no-runtime-path version of the teachpack, i.e., the version
> of the teachpack that worked fine in DrScheme 4.2.5. You will see that,
> when a sound should be played, e.g., when there is a collision, the game
> freezes, and, on the Mac, at least, no error message is displayed in the
> Interactive window. (It should be trivial to port the -no-runtime-path
> teachpack to DrScheme 4.2.5 and run this version of the game in that
> environment to demonstrate that it works fine there.)

Has anyone from the Racket team had a chance to look at these
issues and reproduce them?


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