Hallo, marius schebella hat gesagt: // marius schebella wrote:
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.
I'd like to add that collision detection is a good candidate for making an abstraction instead of a subpatch, because you will need this several times and thus the reusability of an abstraction comes in handy. An abstraction is a pd-file in your path (or the current directory). You need to find out which things in your algorithm will change (like the coordinates of your objects: x1, y1, x2, y2) and then make inlets in your abstraction for them:
inlets: x1 y1 x2 y2 - - - - [collision_detect] - outlet: collision?
ciao
Frank Barknecht _ ______footils.org__