[feature]: ADSR (#15)

closes #14

Reviewed-on: #15

inc/Synth.h

@@ -1,6 +1,8 @@
 #pragma once
 
+#include "ADSR.h"
 #include "Adder.h"
+#include "Effect.h"
 #include "Note.h"
 #include "Oscillator.h"
 #include "Settings.h"
@@ -8,18 +10,28 @@
 
 class Synth {
   private:
+    bool is_note_triggered;
     std::vector<Oscillator*> m_oscillators;
-    Adder m_adder;
+    std::vector<Effect*> m_effects;
     // OscillatorUI* ui_oscillators;
     // Note m_current_note;
     std::vector<float> m_out_signal;
-    std::vector<float>& get_note(int semitone, float beats);
+    void zero_signal();
+    void get_note();
+    void trigger_note_on_effects();
+    void untrigger_note_on_effects();
+    void apply_effects();
 
   public:
     Synth(/* args */);
     ~Synth();
-    void ProduceNoteSound(Note input);
+    void TriggerNote(Note input);
+    void ProduceSound();
+    void StopSound();
     void AddOscillator();
+    void AddEffect(Effect* fx);
     const std::vector<float>& GetOutSignal() { return m_out_signal; }
     const std::vector<Oscillator*>& GetOscillators() { return m_oscillators; }
+    const bool& GetIsNoteTriggered() { return is_note_triggered; }
+    ADSR* GetADSR() { return (ADSR*)m_effects[0]; }
 };