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--- supercollider [2024/09/15 18:08] – discord
+++ supercollider [2025/03/05 19:10] (current) – smj-edison
@@ Line 1: / Line 1: @@
 ====== Directions ======
-Use the ''jmg/supercollider'' branch until it's merged into main.
+Use the ''jmg/supercollider'' folk branch until it's merged into main.
-Install ''supercollider'' and ''tcl-udp'' through apt. Configure jack to use your audio device in ''folk/virtual-programs/music.folk''. Ignore the tidal error for now (TODO: handle this more gracefully).
+  * ''git checkout jmg/supercollider''
-Add yourself to the audio group.
+Install ''supercollider'', the alsa utilities, ''ghc'', and ''tcl-udp'' through apt.
+  * ''sudo apt install supercollider alsa-utils tcl-udp ghc''
+Add yourself to the audio group and reboot.
+  * ''sudo usermod --group --append audio folk''
+  * ''reboot''
+Configure jack to use your audio device in ''folk/virtual-programs/music.folk''. Ignore the tidal error for now (TODO: handle this more gracefully).
+  * This is a bit more involved.
+  * Run this command:
+    * <file bash>aplay -L | grep -E 'hw:CARD=.*,DEV=0' | sed -n 's/^\(hw:CARD=.*,DEV=0\).*$/\1/p'</file>
+     * Or, manually:
+       * Start by running ''aplay -L''.
+       * You'll get a huge list of audio device. Try and find one that says something about HD-Audio, being generic, and being analog. You'll want the string that looks like ''hw:CARD=Generic_1,DEV=0'' and starts with ''hw''.
+    * Now, go to  ''virtual-programs/music.folk'' and look for the big block of if-elseif checks, and add your own instance
+    * Add a section that looks like this:
+    * <file tcl>
+[... top of ifs]
+} elseif {$::thisNode eq "folk-<your node>" } {
+        exec jack_control dps device hw:CARD=Generic_1,DEV=0
+        exec jack_control dps period 256
+}
+[... rest of ifs]
+</file>
+  * Install the SuperDirt library by running <file bash>echo 'include("SuperDirt");' | QT_QPA_PLATFORM=offscreen sclang</file>
+  * It should be set up!
 Starting code to make audio:
@@ Line 14: / Line 42: @@
 }
 </file>
+Code to play a note when it is wished for:
+<file tcl>
+set noteSemitones [dict create A 0 B 2 C 3 D 5 E 7 F 8 G 10]
+set accidentalSemitones [dict create "#" 1 b -1 "" 0]
+When /player/ wishes to play note /note/ {
+    regexp {^([A-Ga-g])([0-9]?)([#b]?)$} $note -> note octave accidental
+    set noteSt [dict get $noteSemitones $note]
+    set modSt [dict get $accidentalSemitones $accidental]
+    set st [expr { $noteSt + $modSt }]
+    set noteFreq [expr { 440.0 * (2.0 ** (($octave == "" ? 0 : ($octave - 4)) + $st / 12.0)) }]
+    set soundName note-$player-$note
+    Wish Supercollider sound $soundName attr freq is $noteFreq
+    Wish Supercollider plays sound $soundName {
+        arg freq = 440.0;
+        var envgen;
+        envgen = EnvGen.kr(Env.adsr(sustainLevel: 0.1));
+        Pan2.ar(Saw.ar(freq) * 0.5 * envgen, 0.0);
+    }
+    When the clock time is /t/ {
+        When /nobody/ claims $soundName has start time /startTime/ {
+            Hold $soundName { Claim $soundName has start time $t }
+        }
+        When $player has region /r/ & $soundName has start time /startTime/ {
+            # set radius [expr { max([region width $r], [region height $r])/2 + 10 }]
+            set radius [expr { ($t - $startTime) * 500 }]
+            Wish $player draws a circle with radius $radius color red
+        }
+    }
+    On unmatch { Hold $soundName { } }
+}
+</file>
+===== Troubleshooting =====
+May need to kill/restart ''jackdbus'' randomly.
+For testing, try running the Supercollider interpreter separately with ''QT_QPA_PLATFORM=offscreen sclang''.
+If you just can't get it working you can run Supercollider as a server on a separate device and connect.
+  * To do that, start by installing Supercollider on your host device of choice, and write down its IP.
+  * Now, run the server side using this code:
+  * <file>
+s.options.protocol = \tcp; // set to use tcp
+s.options.bindAddress = "0.0.0.0"; // allow connections from any address
+s.options.maxLogins = 2; // set to correct number of clients
+s.boot();
+</file>
+  * Moving back to the folk side, you'll have to edit ''music.folk''
+  * There will be a block labelled ''after 500'', put this in there where it says ''::Music::scExec {'' before the rest of that block.
+  * <file>
+o = ServerOptions.new;
+o.protocol_(\tcp);
+t = Server.remote(\remote, NetAddr("Host IP Address", 57110), o); // set to correct address and port
+t.addr.connect;
+t.startAliveThread( 0 );
+t.doWhenBooted({ "remote tcp server started".postln; t.notify; t.initTree });
+Server.default = t;
+s = t;
+</file>
+TODO: add audio debugging page that can be printed?