From 1ce68206330815c5c67ba3f904f9d5dfd8b286a6 Mon Sep 17 00:00:00 2001
From: Christian Colglazier <christian@cacolglazier.com>
Date: Wed, 16 Sep 2020 18:27:22 -0400
Subject: [PATCH] Droplet switching

---
 src/droplets/vco_droplet.cpp |  1 +
 src/main.cpp                 | 34 +++++++++++++++++++---------------
 src/main.h                   | 12 ++++++++++++
 src/menu.cpp                 | 27 ++++++++++++++-------------
 src/menu.h                   |  3 +++
 5 files changed, 49 insertions(+), 28 deletions(-)

diff --git a/src/droplets/vco_droplet.cpp b/src/droplets/vco_droplet.cpp
index 0018f49..0d4de3c 100644
--- a/src/droplets/vco_droplet.cpp
+++ b/src/droplets/vco_droplet.cpp
@@ -4,6 +4,7 @@ VCODroplet::VCODroplet(DaisyPatch* m_patch,
 		       float sample_rate,
 		       DropletState m_state) {
   UpdateState(m_state);
+  patch = m_patch;
   int num_waves = Oscillator::WAVE_LAST - 1;
   osc.Init(sample_rate);
   freqctrl.Init(patch->controls[patch->CTRL_1], 10.0,
diff --git a/src/main.cpp b/src/main.cpp
index 3e17ee2..acba650 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,27 +1,16 @@
-#include "daisysp.h"
-#include "daisy_patch.h"
-
-#include <string>
-
 #include "main.h"
-#include "util.h"
-#include "menu.h"
-#include "droplets/droplet.h"
-#include "droplets/noise_droplet.h"
-#include "droplets/vco_droplet.h"
 
 using namespace daisy;
 
 DaisyPatch patch;
 Menu menu(&patch);
 Droplet* droplet;
+float samplerate;
 
 int main(void) {
   patch.Init();
-  float samplerate = patch.AudioSampleRate();
-  droplet = new VCODroplet(&patch,
-			   samplerate,
-			   DropletState::kFull);
+  samplerate = patch.AudioSampleRate();
+  droplet = GetDroplet();
   patch.StartAdc();
   patch.StartAudio(AudioThrough);
   
@@ -39,6 +28,8 @@ void ProcessControls() {
     menu.UpdateMenuPosition();
     if (patch.encoder.RisingEdge()) {
       menu.SetInMenu(false);
+      delete droplet;
+      droplet = GetDroplet();
     }
   } else {
     if (patch.encoder.Pressed()) {
@@ -57,7 +48,6 @@ void ProcessOled() {
   if (menu.InMenu()) {
     menu.ProcessMenuOled();
   } else {
-    WriteString(patch, 0, 0, Font_6x8, menu.SelectedName());
     droplet->Draw();
   }
   patch.display.Update();
@@ -70,3 +60,17 @@ static void AudioThrough(float **in,
   droplet->Process(in, out, size);
 }
 
+Droplet* GetDroplet() {
+  switch(menu.GetState()) {
+  case MenuState::kVCO:
+    return new VCODroplet(&patch,
+			  samplerate,
+			  DropletState::kFull);
+    break;
+  case MenuState::kNoise:
+  default:
+    return new NoiseDroplet(&patch,
+			    samplerate,
+			    DropletState::kFull);
+  }	
+}
diff --git a/src/main.h b/src/main.h
index 7d00216..7d44d6d 100644
--- a/src/main.h
+++ b/src/main.h
@@ -1,4 +1,16 @@
+#include "daisysp.h"
+#include "daisy_patch.h"
+
+#include <string>
+
+#include "util.h"
+#include "menu.h"
+#include "droplets/droplet.h"
+#include "droplets/noise_droplet.h"
+#include "droplets/vco_droplet.h"
+
 void ProcessControls();
 void ProcessOled();
 void ProcessOutputs();
 static void AudioThrough(float **, float **, size_t);
+Droplet* GetDroplet();
diff --git a/src/menu.cpp b/src/menu.cpp
index 3d2bd83..a53536c 100644
--- a/src/menu.cpp
+++ b/src/menu.cpp
@@ -4,15 +4,7 @@ Menu::Menu(DaisyPatch* m_patch) {
   patch = m_patch;
 }
 const std::string MENU_ITEMS[] = {"VCO", 
-				  "VCA",
-				  "Envelope",
-				  "LFO",
-				  "Logic",
-				  "Noise",
-				  "Delay",
-				  "Reverb",
-				  "Turing",
-				  "Quantizer"};
+				  "Noise"};
 const int MENU_SIZE = sizeof(MENU_ITEMS)/sizeof(*MENU_ITEMS);
 const int MAX_CHAR_LENGTH = 15;
 const int MENU_X[] = {0,  5,  10,  5,  0};
@@ -44,13 +36,18 @@ std::string Menu::FilterMenuText(int position) {
   }
 }
 
-void Menu::CreateMenuItem(std::string text, int position, bool highlighted) {
+void Menu::CreateMenuItem(std::string text,
+			  int position,
+			  bool highlighted) {
   text.insert(text.end(), MAX_CHAR_LENGTH-text.size(), ' ');
   if (highlighted) {
-    DrawSolidRect(*patch, 0, MENU_Y[2], SSD1309_WIDTH, MENU_Y[2]+17, true);
-    WriteString(*patch, MENU_X[position-1], MENU_Y[position-1], Font_11x18, text, !highlighted);
+    DrawSolidRect(*patch, 0, MENU_Y[2],
+		  SSD1309_WIDTH, MENU_Y[2]+17, true);
+    WriteString(*patch, MENU_X[position-1], MENU_Y[position-1],
+		Font_11x18, text, !highlighted);
   } else {
-    WriteString(*patch, MENU_X[position-1], MENU_Y[position-1], Font_7x10, text, !highlighted);
+    WriteString(*patch, MENU_X[position-1], MENU_Y[position-1],
+		Font_7x10, text, !highlighted);
   }
 }
 
@@ -70,3 +67,7 @@ void Menu::UpdateMenuPosition() {
 std::string Menu::SelectedName() {
   return MENU_ITEMS[selectedMenuItem];
 }
+
+MenuState Menu::GetState() {
+  return static_cast<MenuState>(selectedMenuItem);
+}
diff --git a/src/menu.h b/src/menu.h
index 8e3b94c..6386b9b 100644
--- a/src/menu.h
+++ b/src/menu.h
@@ -10,6 +10,8 @@
 
 using namespace daisy;
 
+enum class MenuState {kVCO, kNoise};
+
 class Menu {
  private:
   DaisyPatch* patch;
@@ -23,6 +25,7 @@ class Menu {
   void ProcessMenuOled();
   void UpdateMenuPosition();
   std::string SelectedName();
+  MenuState GetState();
 };
 
 #endif // CASCADE_MENU_H_