#define POT1 0
#define LATCH 7
#define CLOCK 8
#define DATA 4
#define BUT 10
#define BUZZER 3
#define pitch 1000
#define LED1 5

int NumOfTries, PotNum;
int buttonState = digitalRead(BUT);
unsigned long timeStart, timeEnd;
float average, total, reactionTime;
float selectTries();
int i;
float reactionTimer();

const byte three = B10110000; //Constants for the 7seg display
const byte four = B10011001;
const byte five = B10010010;
const byte six = B10000010;
const byte seven = B11111000;
const byte eight = B10000000;
const byte nine = B10010000;



void setup()
{
Serial.begin(9600);
pinMode(LED1, OUTPUT);
pinMode(LATCH, OUTPUT);
pinMode(CLOCK, OUTPUT);
pinMode(DATA,OUTPUT);
pinMode(BUT,INPUT);
pinMode(BUZZER,OUTPUT);
}
void loop()
{
  NumOfTries = selectTries();
  i = 0;
  total = 0;
  while (i < NumOfTries)
  {
    reactionTime = reactionTimer();
  }

  float reactionTimer()
  {
    delay(random(2000,5000));
    timeStart = millis();
    while (digitalRead(BUT) == HIGH)
    {
    digitalWrite(LED1, HIGH);
    }
    digitalWrite(LED1, LOW);
    timeEnd = millis();
    reactionTime = timeEnd - timeStart;

    return reactionTime;
  }

  float selectTries()
  while (buttonState == HIGH) {//Select number of tries function
   PotNum = analogRead(POT1);
   if (PotNum <= 146)
  {
   digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,three);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 3;
  }

if (PotNum <= 292 && PotNum > 146)
  {
  digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,four);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 4;
  }

if (PotNum <= 438 && PotNum > 292)
  {
  digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,five);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 5;
  }

if (PotNum <= 584 && PotNum > 438)
  {
  digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,six);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 6;
  }

if (PotNum <= 730 && PotNum > 584)
  {
  digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,seven);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 7;
  }

if (PotNum <= 876 && PotNum > 730)
  {
  digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,eight);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 8;
  }

if (PotNum > 876)
  {
  digitalWrite(LATCH,LOW);
  shiftOut(DATA,CLOCK,MSBFIRST,nine);
  digitalWrite(LATCH,HIGH);
  NumOfTries = 9;
  }
}
tone(BUZZER,1000,500);
tone(BUZZER,2000,500);
return NumOfTries;
}