Hey everyone.

You'll have to excuse me 'cause I don't have a clue about PD, but need to use it for one of my current projects.

Basically, I want to project some text from my computer onto a blank canvas. I want to use a pressure sensor to detect when a user is sitting down. Once it knows someone is sitting down, I want the text to change.

From here on, I want the text to change after a given amount of time... say... 30 seconds for now?

When it gets to the last slide of text, I want it to do nothing other than display this line of text, until the user places their hand over an LDR. When the user's hand is placed over the LDR, the light will be reduced to a certain level. Once this level is reached, I want PD to time for 15 seconds, and at the end of the 15 seconds, illuminate any random combination of light bulbs and set off a rumble pack beneath where they have put their hand. If the user removes their hand before the 15 seconds is up, I do not want any of the light bulbs to illuminate, and I do not want the rumble pack to go off.

[When certain bulbs are illuminated, I want certain lines of text to be projected.

Say bulbs 1 and 2 are illuminated, but 3, 4 and 5 are not. I would like text to be projected that says "Bulbs 1 and 2 are illuminated. Bulbs 3, 4 and 5 are not". Or say Bulbs 1, 3 and 5 are illuminated, I want text to be projected that says "Bulbs 1, 3 and 5 are illuminated. Bulbs 2 and 4 are not."]

If the user stands up at any point in time, removing pressure from the pressure sensor, I want the initial line of text to be displayed on screen again, and everything to start over.

Sorry if this sounds very complex, please let me know if you can help out at all.

Edit ::

If it makes it any easier, you could ignore the bit that I've put in the square brackets. Instead of this, I would just like one more screen of text to be projected when any combination of the bulbs are illuminated.

Okay, a few things,

Fristly, the sending a text message is the biggest issue for me. How this text will be displayed/used denotes what system to use. Currently I use message boxes to portray the messages (and these are printed to the terminal window... watch it for the results) There are other ways of doing it though, however I couldn't work out a reliable way of reproducing it [set $1 $2 $3( is very awkward for a number of reasons that other PDers will know about. Perhaps these should be symbols, I don't know, but I'm not sure if Pd even has a way to handle and manipulate strings.

Secondly, You ask to hold the last message until the user places his hand over the LDR. but then leave no instruction what to do with that last message. (so I didn't do anything).

I also didn't create the bit between your square brackets. It shouldn't be too much of a headache, but since we're not even sure how we're going to handle the text yet, i didn't bother with that bit.

Someone else, back me up...

http://www.pdpatchrepo.info/hurleur/example_for_joobny.pd

To display the text, this could be helpfull : http://puredata.hurleur.com/sujet-1733-think.

Or you could try to use GEM of course.