B4R Question Battlestar galactica cylon scanner - Arduino c to B4R

void setup() {
  // put your setup code here, to run once:
for (int pin= 2; pin <9; pin++) {
  pinMode(pin,OUTPUT);
}
}

void loop() {
  // put your main code here, to run repeatedly:
  int a = 2;
int t1 =35;
int t2 = 1000;

if (a=1){
for (int i = 2; i<9;i++){
  digitalWrite(i,HIGH);
  delay(t1);
   digitalWrite(i+1,HIGH);
  delay(t1);
   digitalWrite(i+2,HIGH);
  delay(t1);
   digitalWrite(i,LOW);
//  delay(t1);
   digitalWrite(i+1,LOW);
}
for (int i = 8; i>1;i--){
  digitalWrite(i,HIGH);
  delay(t1);
  digitalWrite(i-1,HIGH);
  delay(t1);
   digitalWrite(i-2,HIGH);
  delay(t1);
   digitalWrite(i,LOW);
  delay(t1);
   digitalWrite(i-1,LOW);
}
}
}