Hi Iam using mindwave to control with OSC some Ndefs. I need to write a function that chooses from a list (eg [x, f]) the next and stops the previous. Also I need to be able to play only the first Ndef (eg x) and not the second (eg f) until I get the appropriate message (eg msg[3]) and at the same time to stop x. Here is my try which doesnt work as wanted:
(
OSCdef.new(
\select,
{
arg msg, time, addr, port;
[msg, time, addr, port].postln;
if ((msg[3] > 200), {x.clear;} && {f.play;});
},'/neurovals'
);
SynthDef.new(\Syn, { arg freq = 440, amp = 1, sustain = 0.5;
var sig, env, mod;
env = EnvGen.kr(Env.linen(0.05, sustain, 0.5, 0.08), doneAction: 2);
mod = Saw.ar(freq * 0.1) * LFNoise1.kr(2).range(10,800);
sig = SinOsc.ar(freq + mod) * env;
Out.ar(0, RLPF.ar(sig, freq, 1.7)).dup;
}).add;
x= Ndef(\blinkpat1, Pbind(
\instrument, \Syn,
\dur, 0.03,
\freq, 440
));
OSCdef.new(
\base,
{
arg msg, time, addr, port;
[msg, time, addr, port].postln;
if ((msg[1] == msg[1]),
{x.set(\freq, msg[1].linlin(0, 100, 300, 1000);)});
},'/neurovals'
);
SynthDef.new(\fmsyn, { arg freq = 440, amp = 1, sustain = 1;
var sig, env, mod;
env = EnvGen.kr(Env.linen(0.05, sustain, 0.5, 0.08), doneAction: 2);
mod = SinOsc.ar(freq * 0.5) * LFNoise1.kr(2).range(10,800);
sig = SinOsc.ar(freq + mod) * env;
Out.ar(0, RLPF.ar(sig, freq, 1.7)).dup;
}).add;
f = Ndef(\blinkpat2, Pbind(
\instrument, \fmsyn,
\freq, 440,
\sustain, 2,
\octave, 3,
\amp, 0.4,
));
OSCdef.new(
\base2,
{
arg msg, time, addr, port;
[msg, time, addr, port].postln;
if ((msg[1] == msg[1]),
{f.set(\freq, msg[1].linlin(0, 100, 300, 1000);)});
if ((msg[1] == msg[1]),
{f.set(\sustain, msg[1].linlin(0, 100, 1, 2);)});
},'/neurovals'
);
)
Firstly, this if statement:
if ((msg[3] > 200), {x.clear;} && {f.play;});
is strange - it's not clear trying to get with that, but it's unlikely that it's doing what you want. The && is a boolean operator, so the general expectation is the left and right sides are true/false. In your use, it's actually performing function composition on the left and right hand side functions, but that still isn't doing anything coherent, given your functions. I think what you probably intended is:
if (msg[3] > 200) {
x.clear;
f.play;
}
....which will clear x and play f.
There are a number of ways you can do what I think you're trying to do. Here's one suggestion - Pdef's can be assigned to each other, and hot swapped during playback. This means, you can do:
( // set up \a, \b, and \player, and start playing \player
Pdef(\a, Pbind(
\dur, 1/4,
\degree, 0,
));
Pdef(\b, Pbind(
\dur, 1/3,
\degree, 2,
));
\\ Start playing an empty Pdef to use later.
Pdef(\player).play;
)
Then, you can set \player to one of \a or \b to transparently switch between them:
// Assign Pdef(\a) to player, to start it playing
Pdef(\player, Pdef(\a));
// Assign Pdef(\b) to player, which starts \b and stops \a
Pdef(\player, Pdef(\b));