[PD] Collision detection

marius schebella marius.schebella at chello.at
Wed Oct 15 10:30:41 CEST 2003


I hope you don't mind that I reply to the list again, because both,
subpatches and trigger could be interesting themes for other newbies...

trigger: In Pd you have the problem that with for example the [+]-object
only one inlet is hot (triggers the object). that means you can send any
number of floats into the right inlet, but no result will be sent to the
outlet. only if you send a message to the left inlet, the object is
triggered. the same is with the logical operators. So you need to be sure
that a message is is always sent to the right inlet before the left. And
there you need the trigger object. It fires its outlets from right to left.
[t b f] means "send the float and then send a bang".

to create a subpatch just type "pd" followed by a name of your choice, like
[pd collision]. then a new window pops up and with cut and paste you can
place objects there, and also work there like in every patch window. it is
like an extension to the parent window.


----- Original Message ----- 
From: "Just A Drummer" <murchisonjames_ at hotmail.com>
To: <marius.schebella at chello.at>
Sent: Wednesday, October 15, 2003 2:10 AM
Subject: Re: [PD] Collision detection

> Thanks so much, i didn't really understand the trigger object, and still
> don't really, but they seem to have fixed things up, i know it was pretty
> messy, i actually cleaned it up from what it was before that!  how did you
> get all the abstractions into their own object boxes and still part of the
> same .pd file, whenever i try to do that i have to save them as a seperate
> file within the same directory.
> anyway thanks again
> James
> >From: "marius schebella" <marius.schebella at chello.at>
> >To: "Just A Drummer" <murchisonjames_ at hotmail.com>
> >Subject: Re: [PD] Collision detection
> >Date: Tue, 14 Oct 2003 01:28:41 +0200
> >
> >hi,
> >i think it was just a small mistake, that you connected one outlet of [r
> >two] to a wrong inlet of [>=].
> >i looked into the patch and cleaned it up a little (for my
> >i
> >wrote some hints into the patch, so maybe you want to look into it.
> >feel free to ask further questions (also on the pd-list).
> >i hope this helps.
> >marius.
> >
> >----- Original Message -----
> >From: "Just A Drummer" <murchisonjames_ at hotmail.com>
> >To: <pd-list at iem.at>
> >Sent: Monday, October 13, 2003 10:55 AM
> >Subject: [PD] Collision detection
> >
> >
> > > I know this may be a bit off what anyone has done but i am trying to
> > > construct a small shooting game with pd and gem and im having huge
> >trouble
> > > with the collision detection. i have it working but there are a couple
> >of
> > > bugs that i have spent hours slaving over.  if anyone has any
> >in
> > > this department it would be very helpful if you could have a look at
> > > patch, because i'm losing too much hair over this.
> > > thanks
> > > James
> > >
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