int trigger=12;
int echo=14;
#include <DHTesp.h>

DHTesp sensor;
TempAndHumidity data;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(4, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(15, OUTPUT);
  pinMode(trigger,OUTPUT);
  pinMode(echo,INPUT);
  sensor.setup(18, DHTesp::DHT22);
}

void loop() {
int distance=ultrasonic();
data = sensor.getTempAndHumidity();
Serial.println(distance);
  // put your main code here, to run repeatedly:
  delay(1000);
  Serial.println("Humi : " + String(data.humidity));
  Serial.println("Temp : " + String(data.temperature));
  Serial.println("-----------------");
  delay(1000); // this speeds up the simulation
if (data.temperature>=50 && data.humidity<=20 && distance>=300)
{
  digitalWrite(4, HIGH);
  digitalWrite(2, LOW);
  digitalWrite(15, LOW);
  Serial.println("you are safe");
}
  else if(data.temperature>=20 && data.temperature<=50 && data.humidity>=20 && data.humidity<=50 && distance>=200 && distance<=300)
  {
  digitalWrite(2, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(15, LOW);
  Serial.println("you are unsafe");
  }
  else if(data.temperature<=20 && data.humidity>=50 && distance<=200)
  {
  digitalWrite(15, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(2, LOW);
  Serial.println("you are danger");
 }
 else {
  digitalWrite(15, LOW);
  digitalWrite(4, LOW);
  digitalWrite(2, LOW);
 }

}



int ultrasonic () {
  digitalWrite(trigger, LOW);
  delay(10);
  digitalWrite(trigger,HIGH);
  delay(100);
  digitalWrite(trigger, LOW);
  int distance=pulseIn(echo,HIGH);
 // return(distance);
  return(distance*0.034/2)+1;
}