#include <IRremote.h>
#include <LiquidCrystal.h>


// laps info
unsigned long car20currentRunStartMillis;
unsigned long car20lastRunInMillis;
int car20currentLap;


// laser gate
boolean car20lastgatesensorstate = LOW;   // the previous reading from sensor
unsigned long car20lastDebounceTime = 0;  // the last time the sensor pin was toggled
boolean car20reading = LOW;

unsigned long bestRunInMillis;
int debounceDelay = 5000;
const int RECV_PIN = 7;
IRrecv irrecv(RECV_PIN);
decode_results results;
LiquidCrystal lcd(9, 8, 5, 4, 3, 2);

void setup() {
  Serial.begin(9600);
  // pin mode
  delay(50); // to late the sensor and laser work, so we wont get the lap triggered.
  lcd.begin(16,4);
  lcd.setCursor(0,0);
  lcd.print("Car Tracker");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("C20:");
  delay(50);
  lcd.setCursor(10,0);
  lcd.print("|:");
  irrecv.enableIRIn();
  irrecv.blink13(true);

  // reset params
  car20currentRunStartMillis = 0;
  car20lastRunInMillis = 0;
  car20currentLap = 0;

}

void loop()
{
  if (irrecv.decode(&results) && ((millis() - car20lastDebounceTime) >= (3000))){
    car20lastDebounceTime = millis();
    Serial.println(results.value, HEX);
        if (results.value == 0xBA4500FF) {
        car20reading = HIGH;
        }
        Car20();
        irrecv.resume();
    }

}

 void Car20() {

unsigned long car20savedMillis;
unsigned long car20fastestlap;

  // If the switch changed, due to noise or pressing:
  if (car20reading != car20lastgatesensorstate) {
    // reset the debouncing timer
    car20lastDebounceTime = millis();
  }

    if (car20reading != car20lastgatesensorstate) {
      car20lastgatesensorstate = car20reading;

      // If we went High, this mean the beam was broken
      if (car20lastgatesensorstate == HIGH) {
        // save the millis so all the math on it will be done with the same value.
        car20savedMillis = millis();
        // if its not the first lap
        if (car20currentLap > 0) {
          // save the last run
          car20lastRunInMillis = car20savedMillis - car20currentRunStartMillis;
          // if last run is faster then best run
          if (car20lastRunInMillis < car20fastestlap || car20fastestlap == 0) {

            car20fastestlap = car20lastRunInMillis;
          }
        }


        car20currentRunStartMillis = car20savedMillis;


        car20currentLap++;

  lcd.setCursor(4,0);
  lcd.print(car20lastRunInMillis / 1000.0, 3);
  lcd.setCursor(12,0);
  lcd.print(car20fastestlap / 1000.0, 3);

    if (car20fastestlap < bestRunInMillis || bestRunInMillis == 0) {
    bestRunInMillis = car20fastestlap;
  }
  car20lastgatesensorstate = LOW;
      }
    }

  }