int switchStateGreen =0;
int switchStateBlue =0;
int switchStateYellow=0;
const int buzzer = 1;
int firstNote;
int secondNote;
int thirdNote;
int lockA = 0;
int lockB = 0;
int lockC = 0;
int MainLock = 0;
bool buzzerPlayed = false;
bool buzzerP = false;

void setup(){
  pinMode(1, OUTPUT);
  pinMode(2, INPUT);
pinMode(3, INPUT);
pinMode(4, INPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);   

}

void loop() {
 switchStateYellow = digitalRead(4);
 if (switchStateYellow == HIGH) {
  digitalWrite(7, HIGH);
  digitalWrite(6, LOW);
  digitalWrite(5, LOW); 
   
  delay(250); digitalWrite(7, LOW);
  if (lockB == 1 && lockC == 2){
    thirdNote = 1000;
    lockA = 3;
  }
  if (lockB == 1 && lockC == 1){
    thirdNote = 1000;
    lockA = 1;
  }
   if (lockB == 1 && lockC == 0 || lockB == 0 && lockC == 1){
    secondNote = 1000;
    lockA = 1;
  }
  if(lockB == 0 && lockC == 0){
    firstNote = 1000;
    lockA = 1;
  }
 
 }
 
  switchStateGreen = digitalRead(3);
 if (switchStateGreen == HIGH) {
  digitalWrite(7, LOW);
  digitalWrite(6, HIGH);
  digitalWrite(5, LOW);
  
  delay(250); digitalWrite(6, LOW);
  if (lockA == 1 && lockC == 1){
    thirdNote = 750;
    lockB = 1;
  }
   if (lockA ==1 && lockC ==0 || lockA == 0 && lockC == 1){
    secondNote = 750;
    lockB = 1;
  }
  if(lockA ==0 && lockC == 0){
    firstNote = 750;
    lockB = 1;
  }
  
 }
 
 switchStateBlue = digitalRead(2);
 if (switchStateBlue == HIGH) {
  digitalWrite(7, LOW);
  digitalWrite(6, LOW);
  digitalWrite(5, HIGH);
  
  delay(250); digitalWrite(5, LOW);
  
  if (lockB == 1 && lockA == 1){
    thirdNote = 300;
    lockC = 1;
  }
   if (lockB == 1 && lockA == 0){
    secondNote = 300;
    lockC = 2;
  }
  if(lockB == 0 && lockA == 1){
    secondNote = 300;
    lockC = 1;
  }
  if(lockB == 0 && lockA == 0){
    firstNote = 300;
    lockC = 1;
  }
  
 }
  if (lockA == 3 && lockB == 1 && lockC == 2 && !buzzerPlayed){
  tone(buzzer, firstNote);
  delay(300);
  noTone(buzzer);
  delay(500); tone(buzzer, secondNote);
  delay(300);
  noTone(buzzer);
  delay(500); tone(buzzer, thirdNote);
  delay(300);
  noTone(buzzer);
  buzzerPlayed = true;
  MainLock = 1;
  delay(10);
lockA = 0;
lockB = 0;
lockC = 0;
buzzerPlayed = false;
MainLock = 0;
  }
 if(lockA != 0 && lockB != 0 && lockC != 0 && MainLock == 0 && !buzzerPlayed){
    int delayPeriod = 500;

  // Loop to simulate the beeping bomb
  for (int i = 0; i < 10; i++) { // Adjust the number of iterations for longer beeping
    tone(buzzer, 1000); // Play tone at 1000 Hz
    delay(100); // Tone duration
    noTone(buzzer); // Stop the tone
    delay(delayPeriod); // Delay before next beep

    // Reduce delayPeriod to speed up beeping, mimicking a countdown
    delayPeriod -= 50; // Adjust this step size as needed
    if (delayPeriod < 50) delayPeriod = 50; // Limit the minimum delay to avoid going too fast
  }

  // Longer beep indicating the end
  tone(buzzer, 2000); // Higher frequency beep at 2000 Hz
  delay(500); // Longer duration for the final beep
  noTone(buzzer);

  // Optional delay before restarting the loop
  delay(2000);
  buzzerPlayed = true;
  delay(10);
lockA = 0;
lockB = 0;
lockC = 0;
buzzerPlayed = false;
 }
}