Fire fighting robot without pump

// coding by team technical romboz 
// tutorial video https://youtu.be/1t2AhUNXxMI
#include <Servo.h>  //include servo.h library
Servo myservo;
int pos = 0;
boolean fire = false;

#define flame 8   //flame sesnor
#define LM1 2       // left motor
#define LM2 3       // left motor
#define RM1 4       // right motor
#define RM2 5       // right motor
#define fire_motor 6

void setup()
{

  pinMode(flame, INPUT);
  pinMode(LM1, OUTPUT);
  pinMode(LM2, OUTPUT);
  pinMode(RM1, OUTPUT);
  pinMode(RM2, OUTPUT);
  pinMode(fire_motor, OUTPUT);
  myservo.attach(9);
  myservo.write(90);
  digitalWrite(fire_motor, 1);

}

void put_off_fire()
{
  delay (500);

  digitalWrite(LM1, HIGH);
  digitalWrite(LM2, HIGH);
  digitalWrite(RM1, HIGH);
  digitalWrite(RM2, HIGH);

  digitalWrite(fire_motor, 0);
  delay(500);

  for (pos = 50; pos <= 130; pos += 1) {
    myservo.write(pos);
    delay(30);
  }
  for (pos = 130; pos >= 50; pos -= 1) {
    myservo.write(pos);
    delay(30);
  }

  digitalWrite(fire_motor, 1);
  myservo.write(90);

  fire = false;
}

void loop()
{
  myservo.write(90); //Sweep_Servo();

  if (digitalRead(flame) == 1)
  {

    digitalWrite(LM1, HIGH);
    digitalWrite(LM2, HIGH);
    digitalWrite(RM1, HIGH);
    digitalWrite(RM2, HIGH);
  }

  else if (digitalRead(flame) == 0)
  {
    digitalWrite(LM1, HIGH);
    digitalWrite(LM2, LOW);
    digitalWrite(RM1, HIGH);
    digitalWrite(RM2, LOW);
    fire = true;
  }

  delay(0);//change this value to increase the distance

  while (fire == true)
  {
    put_off_fire();
  }
}