int trig =12;
int echo =14;
float green=0;
float orange_light=2;
float red=4;
float distance;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trig , OUTPUT);
  pinMode(echo, INPUT);
  pinMode(green, OUTPUT);
  pinMode(orange_light, OUTPUT);
  pinMode(red,OUTPUT);
  tone(5,OUTPUT);
  
}

int ultraperformance(){
digitalWrite(trig , LOW);
delay(10);
digitalWrite(trig , HIGH);
delay(100);
digitalWrite(trig , LOW);

distance=pulseIn(echo, HIGH);
return(distance*0.034/2)+1;


}

void loop() {
  float actual_distance=ultraperformance();
  Serial.println(actual_distance);

  if (actual_distance>300){
     digitalWrite(green, HIGH);
     digitalWrite(orange_light , LOW);
     digitalWrite(red , LOW);
     tone(5,15000);
  }
  else if(actual_distance>=200 && actual_distance <300 ){
     digitalWrite(orange_light ,HIGH);
     digitalWrite(green , LOW);
     digitalWrite(red , LOW);
    tone(5,10000); 
  }
  else if(actual_distance>=0 && actual_distance<200 ){
     digitalWrite(red ,HIGH);
     digitalWrite(orange_light , LOW);
     digitalWrite(green , LOW);
     tone(5,5000);
  }
  else{
         digitalWrite(green , LOW);
         digitalWrite(orange_light , LOW);
     digitalWrite(red , LOW);
  }


  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}