//31 Hz to 65535 Hz
#include <MusicBuzzer.h>
const int BUZZER_PIN = 8; // declaring the Buzzer pin

const int trigPin = 10;
const int echoPin = 9;
const int adjustPin = A0;

long duration, defautltTriggerDistance;
int distanceCm, distanceInch;
boolean play = false;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  //Serial.begin(115200);
  pinMode(BUZZER_PIN, OUTPUT); //addigning pin to Output mode
  music.init(BUZZER_PIN);
  pinMode(trigPin, OUTPUT);
  digitalWrite(trigPin,LOW);
  delayMicroseconds(2);
  pinMode(echoPin, INPUT);
  delay(6000);
  defautltTriggerDistance = 24;
}

void loop() {
  ExamineSensor();
}

void RunBuzzerSound(){
  // put your main code here, to run repeatedly:
  tone(BUZZER_PIN, 4000); // Send 1KHz sound signal...
  delay(1000); //pause...for 1 sec
  noTone(BUZZER_PIN); //// Stop sound...
  //delay(1000); //// ...for 1sec
  tone(BUZZER_PIN, 1000); // Send 1KHz sound signal...
  delay(1000); //pause...for 1 sec
  noTone(BUZZER_PIN); //// Stop sound...
  delay(100); //// ...for 1ms
}

void RunMusicSound()
{
  music.greensleeves(); //YOU'VE BEEN RICK ROLLED
  delay(2000);
  
}

void ExamineSensor()
{
     int sensorValue = 0; 
   sensorValue = analogRead(A0);
   long triggerDist = map(sensorValue,0,1024,0,30);
   long activeTriggerDist = defautltTriggerDistance;
   bool alarmTriggered = false;
   if(defautltTriggerDistance != triggerDist)
   {
    activeTriggerDist = triggerDist;

   }
  
  digitalWrite(trigPin, HIGH);//Take ultrasonic Measurement
  delayMicroseconds(10); //
  digitalWrite(trigPin, LOW);//
  duration = pulseIn(echoPin, HIGH);   //Read ultrasonic result
  distanceInch = duration * 0.0133 / 2; //sensor distance from object in inches
  String stringDistanceInch = (String) distanceInch;
  String stringtriggerDist = (String) activeTriggerDist;
   Serial.println("Distance Inch:" + stringDistanceInch);
   Serial.println("Trigger Distance Inch:" + stringtriggerDist);
  if (distanceInch < activeTriggerDist && distanceInch > 0) {
      RunMusicSound();
     alarmTriggered = true;
  }
   Serial.print(triggerDist);
   Serial.print("--");
   Serial.println(distanceInch);
    if(alarmTriggered)
  {
    delay(1000);
  }
  else{
    delay(1000);
  }
}