#include "pitches.h"

// https://forum.arduino.cc/t/stop-melody/398482
int melody1[] = {
  NOTE_E5, NOTE_DS5, NOTE_E5, NOTE_DS5, NOTE_E5, NOTE_B4, NOTE_D5, NOTE_C5, NOTE_A4, 0, NOTE_C4, NOTE_E4, NOTE_A4, NOTE_B4, 0, 
  NOTE_E4, NOTE_GS4, NOTE_B4, NOTE_C5, 0, NOTE_E4, NOTE_E5, NOTE_DS5, NOTE_E5, NOTE_DS5, NOTE_E5, NOTE_B4, NOTE_D5, NOTE_C5, 
  NOTE_A4, 0, NOTE_C4, NOTE_E4, NOTE_A4, NOTE_B4, 0, NOTE_E4, NOTE_C5, NOTE_B4, NOTE_A4
};

int melody2[] = {
  NOTE_A5, NOTE_FS5, NOTE_G5, NOTE_A5, NOTE_FS5, NOTE_G5, NOTE_A5, NOTE_A4, NOTE_B4, NOTE_CS5, NOTE_D5, NOTE_E5, NOTE_FS5, NOTE_G5, 
  NOTE_FS5, NOTE_D5, NOTE_E5, NOTE_FS5, NOTE_FS4, NOTE_G4, NOTE_A4, NOTE_B4, NOTE_A4, NOTE_G4, NOTE_A4, NOTE_FS4, NOTE_G4, NOTE_A4, 
  NOTE_G4, NOTE_B4, NOTE_A4, NOTE_G4, NOTE_FS4, NOTE_E4, NOTE_FS4, NOTE_E4, NOTE_D4, NOTE_E4, NOTE_FS4, NOTE_G4, NOTE_A4, NOTE_B4, 
  NOTE_G4, NOTE_B4, NOTE_A4, NOTE_B4, NOTE_CS5, NOTE_D5, NOTE_A4, NOTE_B4, NOTE_CS5, NOTE_D5, NOTE_E5, NOTE_FS5, NOTE_G5, NOTE_A5
};

int notedurations1[] = {
  8, 8, 8, 8, 8, 8, 8, 8, 4, 8, 8, 8, 8, 4, 8, 8, 8, 8, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 8, 8, 8, 8, 4, 8, 8, 8, 8, 2
};

int notedurations2[] = {
  3, 6, 6, 3, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 6, 6, 3, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 6, 6, 3, 6, 
  6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 6, 6, 3, 6, 6, 8, 6, 6, 6, 6, 6, 6, 6,
};

const int button1 = 2;
const int button2 = 3;
const int piezo = 8;

int buttonState1 = 0;
int buttonState2 = 0;

void setup() {
  // iterate over the notes of the melody:
  pinMode(piezo, OUTPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
}

void playSong(int OutputPin, int Melody[], int NoteDurations[], int NumberOfNotes){
  for (int thisNote = 0; thisNote < NumberOfNotes; thisNote++) {
    int NoteDuration = 1000 / NoteDurations[thisNote];
    tone(OutputPin, Melody[thisNote], NoteDuration);
    int pauseBetweenNotes = NoteDuration * 1.30;
    delay(pauseBetweenNotes); 
  }
  noTone(OutputPin);
}

void loop() {
  buttonState1 = digitalRead(button1);
  buttonState2 = digitalRead(button2);

  if (buttonState1 == LOW) {
    playSong(8, melody1, notedurations1, sizeof(melody1)/sizeof(melody1[0]));
  }
  else if (buttonState2 == LOW) {
    playSong(8, melody2, notedurations2, sizeof(melody2)/sizeof(melody2[0]));
  }
  else {}
}