Hi Nicolas,
According to the docs:
Caution! Avoid using the wait command in a handler after executing
the load command. Since the load command is non-blocking, it may
still be running when your handler reaches the wait command. And
since the load command is part of the Internet library and is
implemented in a handler, the wait command will stop the download
process if it is executed while the download is still going on. In
particular, do not use constructions like the following, which will
sit forever without downloading the file:
load URL myURL
wait until the URLStatus of myURL is "cached" -- DON'T DO THIS
The "How to Download Data from the Internet" tutorial might help you:
This stack explains how to test the user connection, an url validity,
why and how to use get url or load url, retrieve data from framed
pages, give an account of download progress, manage errors, display
retrieved data (web pages, stacks, compressed or not), etc.
You will access this tutorial through "Tutorials Picker" a free
plugin that interfaces with the So Smart Software website in order to
display all available tutorials stacks directly from the web.
You will find it by going to http://www.sosmartsoftware.com/.
Revolution/Plugins or Tutorials section.
Best regards from Paris,
Eric Chatonet.
Le 17 mars 08 à 12:22, Nicolas Cueto a écrit :
I'm having trouble getting a load url command
to work as planned.
On a card there's 24 small images, each of which,
when clicked, plays one of 24 sounds. All 48 images
and sounds are set by loading 48 http urls.
What I'd like to happen is that the 24 images be not
displayed until all 47 http urls have been downloaded
(are in the cache?).
This is the script I've been using :
repeat ...
load URL tImgPath
wait until tImgPath is among the lines of the cachedURLs with
messages
set the fileName of image "img" of group i to tImgPath
load URL tSndPath
wait until tSndPath is among the lines of the cachedURLs with
messages
set the cpSndPath of image "img* to tSndPath
end repeat
Now, this was working, tho somewhat slowly. The full download would
take anywhere from 3 to 15 seconds. But after I extended the card
script
which includes that load command, the full download takes much longer
or even hangs.
My first thought is, could a very long card script cause
memory-related
problems?
Another thought is that I don't understand fully how "cachedURLs"
works? I assume that the load command puts the downloaded
files in some kind of temporary memory, so as to avoid having
to download the same files again and again.
My final thought was to check the archives. There, I found that the
load command can be modified thus:
load URL tURL with message tMessage
So, I tried that, and, it *was* faster. However, the 24 images are
not displaying all at once. Plus, I'm not sure what to do with
the tMessage part; for now, I've just added an "on tMessage"
to the script, but it doesn't do anything with the message.
If I've explained myself well enough, any suggestions how I can
make the URLs all download quickly and, to a user's eyes, invisibly?
Thank you.
--
Nicolas Cueto
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