From 744cdd3713e87ce7e998fcc486e7c8f4402c6ce3 Mon Sep 17 00:00:00 2001
From: Christian Colglazier <christian@cacolglazier.com>
Date: Tue, 1 Mar 2022 20:42:40 -0500
Subject: [PATCH] Sequencer clock divider

---
 src/droplets/sequencer_droplet.cpp | 17 +++++++++++++++--
 src/droplets/sequencer_droplet.h   |  3 +++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/droplets/sequencer_droplet.cpp b/src/droplets/sequencer_droplet.cpp
index ffc3f86..b8fa502 100644
--- a/src/droplets/sequencer_droplet.cpp
+++ b/src/droplets/sequencer_droplet.cpp
@@ -52,10 +52,15 @@ void SequencerDroplet::Process(AudioHandle::InputBuffer in,
 	  // Set sequence length
 	  if (chn == GetChannelMin()) {
 	    sequence_length = std::max(1.0f,control[chn].Process() /
-				       4.9f*MAX_SEQUENCE_LENGTH);
+				       4.85f*MAX_SEQUENCE_LENGTH);
 	    SetDimensions();
 	    SetInMenu();
 	  }
+	  // Set clock divider
+	  if (chn == GetChannelMin()+1) {
+	    divider = std::max(1.0f,control[chn].Process() /
+				       4.85f*MAX_CLOCK_DIVIDE);
+	  }
 	}
       }
       last_control_value[chn] = control[chn].Process();
@@ -113,6 +118,11 @@ void SequencerDroplet::Draw() {
 	      56,
 	      length_text,
 	      !InMenu());
+  WriteString(Patch(),
+	      36+GetScreenMin(),
+	      56,
+	      std::to_string(divider),
+	      !InMenu());
 
   if(NeedUpdate()) {
     title_graph->Update();
@@ -141,7 +151,10 @@ void SequencerDroplet::SetControls() {
 }
 
 void SequencerDroplet::Step() {
-  step = (step + 1) % sequence_length;
+  divider_count = (divider_count + 1) % divider;
+  if (divider_count == 0) {
+    step = (step + 1) % sequence_length;
+  }
 }
 
 void SequencerDroplet::Reset() {
diff --git a/src/droplets/sequencer_droplet.h b/src/droplets/sequencer_droplet.h
index a4600a7..b5d344f 100644
--- a/src/droplets/sequencer_droplet.h
+++ b/src/droplets/sequencer_droplet.h
@@ -11,6 +11,7 @@
 #include "../graphics/graph.h"
 
 #define MAX_SEQUENCE_LENGTH 32
+#define MAX_CLOCK_DIVIDE 16
 #define CONTROL_DEADZONE 0.00499f
 #define CONTROL_RATE_LIMIT 25
 #define NUM_ROWS 6
@@ -23,6 +24,8 @@ private:
   int num_columns = 4;
   int num_rows = NUM_ROWS;
   int control_rate_count = 0;
+  int divider = 0;
+  int divider_count = 1;
   float sequence[MAX_SEQUENCE_LENGTH] = { 0.0f };
   Parameter control[4];
   float last_control_value[4] = { 0.0f };