[racket] My PLT->Racket porting experience

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Thu Mar 10 14:11:14 EST 2011

Sorry we're on the road. 

On Mar 10, 2011, at 1:44 PM, Drew Hess wrote:

> 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?
> thanks
> d
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