one more day (2), durations, pseq, startup

attempt-at-setup.lisp

@@ -0,0 +1,79 @@
+
+;; https://defaultxr.github.io/cl-collider-tutorial/02-getting-started.html
+
+(ql:quickload :cl-collider)
+(in-package :sc-user)
+
+(setf *s* (make-external-server "localhost" :port 4444))
+(server-boot *s*)                       ; already in use
+
+
+(ql:quickload :cl-patterns/supercollider)
+
+;; ...this will take care of loading cl-collider for you if it's not already loaded.
+
+;; once that is done, start the SuperCollider server if you haven't already:
+
+(cl-patterns:backend-start 'supercollider)
+
+;; (Note: if you get an error, make sure that sc:*sc-synth-program* is the same as the output of "which scsynth" from your command line. You may also need to set sc:*sc-plugin-paths* if you get errors about UGens not being installed.)
+
+;; then define a few synths...
+
+(in-package #:cl-collider)
+
+(defsynth kik ((freq 440) (out 0))
+  (let* ((env (env-gen.kr (env (list 0 1 0) (list 0.001 1)) :act :free))
+         (fenv (env-gen.kr (env (list 1 0) (list 0.25)) :level-scale freq))
+         (sig (sin-osc.ar fenv 0 0.2)))
+    (out.ar out (pan2.ar sig 0 env))))
+
+(defsynth default ((gate 1) (freq 440) (out 0))
+  (let* ((env (env-gen.kr (asr 0.01 1 0.1) :gate gate :act :free))
+         (sig (sin-osc.ar freq 0 0.2)))
+    (out.ar out (pan2.ar sig 0 env))))
+
+;; then, enable cl-patterns's supercollider backend:
+
+(in-package #:cl-patterns)
+
+;; start the clock that patterns will be played on:
+
+;; the clock keeps tempo in beats per second; thus 110/60 = 110 beats per minute
+(start-clock-loop :tempo 110/60)
+
+*clock*
+
+;; ...and then go ahead and write some patterns!
+
+(pb :foo           ;; define a new pattern named :foo
+  :instrument :kik ;; use the :kik synth we defined above
+  :play-quant 4 ;; make sure the pattern will only start on a beat that is divisible by 4, to stay in sync
+  :dur 1        ;; give each event a duration of 1 beat
+  :pfin 4 ;; limit the length of the pattern to 4 events (the default is infinite events)
+  )
+
+(pb :bar
+  :instrument :default
+  :play-quant 4
+  :dur 1/2
+  :scale :major ;; select the major scale
+  :degree (pwhite 0 7) ;; pick a random note from the first 7 notes in the selected scale
+  :pfindur 4 ;; limit the length of the pattern to 4 beats. pfindur causes the pattern to be limited based on its duration in beats, rather than the number of events.
+  )
+
+;; start playing the defined patterns:
+
+;;; testing
+;; (in-package #:cl-collider)
+;; (proxy :foo (sin-osc.ar 440 0 0.2))
+;; (proxy :foo ())
+
+;; (in-package #:cl-patterns)
+;; (play :foo)
+
+;; (play :bar)
+
+;; (end :foo)
+
+;; (end :bar)