/**
   Mini piano for Arduino.

   You can control the colorful buttons with your keyboard:
   After starting the simulation, click anywhere in the diagram to focus it.
   Then press any key between 1 and 8 to play the piano (1 is the lowest note,
   8 is the highest).

   Copyright (C) 2021, Uri Shaked. Released under the MIT License.
*/

#include "pitches.h"

#define SPEAKER_PIN 8

const uint8_t buttonPins[] = { 12, 11, 10, 9, 7, 6, 5, 4 };
const int buttonTones[] = {
  NOTE_C4, NOTE_D4, NOTE_E4, NOTE_F4,
  NOTE_G4, NOTE_A4, NOTE_B4, NOTE_C5
};
const int numTones = sizeof(buttonPins) / sizeof(buttonPins[0]);

const int melody[] = {NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4};
const int durations[] = {500,125,125,250,250,250,250,250};
int index;

void setup() {
  for (uint8_t i = 0; i < numTones; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  pinMode(SPEAKER_PIN, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  
  int pitch = 0;
  for (uint8_t i = 0; i < numTones; i++) {
    if (digitalRead(buttonPins[i]) == LOW) {
      pitch = buttonTones[i];
    }
  }
  if (pitch == NOTE_C4) {
    Serial,println("button 0 pushed")
    for (int j = 0; j<8; j++) {
    tone(SPEAKER_PIN, pitch, melody[j], durations [j]);
    delay(200);
    }
    }else if (pitch == NOTE_D4) {
    Serial,println("button 0 pushed")
    for (int k = 7; k>= 0; j--) {
    tone(SPEAKER_PIN, pitch, melody[k], durations [k]);
    delay(250);
    }

if (pitch == NOTE_E4) {
    Serial,println("button 0 pushed")
    for (int i2 = 0; i2<8; 12++) {
      index = random(0,8);
    tone(SPEAKER_PIN, pitch, melody[j], durations [j]);
      delay(250);
    }
  } else if (pitch) {
    tone(SPEAKER_PIN, pitch)
  } else{
    noTone(SPEAKER_PIN);
  }
}