From 8fcdea3150dd9442170ef8604a17430f445d7c23 Mon Sep 17 00:00:00 2001
From: gretchen <gretchen@gnar.cool>
Date: Sat, 16 Nov 2019 15:34:50 -0800
Subject: first stab at parameters and midi out.

---
 intervals.lua | 89 +++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 74 insertions(+), 15 deletions(-)

diff --git a/intervals.lua b/intervals.lua
index e74a575..8c8538d 100644
--- a/intervals.lua
+++ b/intervals.lua
@@ -12,11 +12,9 @@
 -- 3) select base tone
 -- 4) key signatures
 -- 5) play from input
--- 6) midi out
--- 7) parameters
---    - delay,
---    - midi out y/n
---    - amplitude
+
+local ControlSpec = require "controlspec"
+-- TODO use MusicUtil
 
 -- graphics and audio utilities
 function midi_to_hz(note)
@@ -253,10 +251,7 @@ end
 
 -- end mode library
 
-engine.name = 'PolyPerc'
-function play(hz)
-  engine.hz(hz)
-end
+
 
 
 function message (msgs, tick_fn, midi_fn)
@@ -352,7 +347,7 @@ end
 function play_and_wait_2 (known, guess)
   return {
     init=function ()
-      play(midi_to_hz(guess))
+      play(guess)
       return state_redraw
     end,
     redraw=function()
@@ -387,7 +382,7 @@ function play_and_wait_1 (midi_note)
   complete = nil
   return {
     init=function ()
-      play(midi_to_hz(midi_note))
+      play(midi_note)
       return state_redraw
     end,
     redraw=function()
@@ -463,18 +458,82 @@ intervals_state = {
   },
 }
 
+engine.name = 'PolyPerc'
+-- TODO fix globals here
+-- TODO note_on vs note_off
+-- TODO parameters for velocity and for note_off delay
+function play(note, once)
+  if intervals_state.play_audio then
+    engine.hz(midi_to_hz(note))
+  end
+  if intervals_state.play_midi then
+    -- if state.timer then
+    -- state.timer:stop()
+    -- metro.free(state.timer.id)
+    -- end
+    local t = metro.init()
+    t.time = 0.15
+    t.event = function(time)
+      t:stop()
+      metro.free(t.id)
+      intervals_state.midi_out:note_off(note, 32)
+    end
+    intervals_state.midi_out:note_on(note, 80)
+    t:start()
+  end
+end
+
 function init()
-  play(midi_to_hz(60))
   -- initialize midi
-  m = midi.connect()
-  m.event = function (a)
+  -- TODO configure vport
+  intervals_state.midi_in = midi.connect(1)
+  intervals_state.midi_in.event = function (a)
     b = midi.to_msg(a)
     -- monitor
     if b.type == "note_on" then
-      play(midi_to_hz(b.note))
+      play(b.note, b.vel)
     end
     state_call(intervals_state, "midi", {b})
   end
+  intervals_state.midi_out = midi.connect(2)
+
+  -- TODO save
+  params:add({
+    type = "option",
+    id = "output",
+    name = "Output",
+    options = {"play + midi", "play", "midi"},
+    action = function(value)
+      if value == 1 then
+        intervals_state.play_midi = true
+        intervals_state.play_audio = true
+      end
+      if value == 2 then
+        intervals_state.play_midi = false
+        intervals_state.play_audio = true
+      end
+      if value == 3 then
+        intervals_state.play_midi = true
+        intervals_state.play_audio = false
+      end
+    end
+  })
+  params:add({
+    type = "control",
+    id = "wait",
+    name = "Wait Time",
+    default=60,
+    controlspec = ControlSpec.new(0.0001, 3, 'lin', 0.1, 1.0, "secs"),
+    action = function(value)
+      intervals_state.tick_interval = value
+      if intervals_state.timer then
+        intervals_state.timer.time = value
+      end
+  end})
+  params:bang()
+
+  play(60)
+
 end
 
 function cleanup()
-- 
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