//Varieables

//North-South Lights
const int nsr = 10;
  //Red
const int nsy = 9;
  //Yellow
const int nsg =8;
  //Green

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//Eas-West Lights
const int ewr = 13;
  //Red
const int ewy = 12;
  //Yellow
const int ewg = 11;
  //Green

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//walk sign parts

int wb1 = 7;
  //walk button 1
int wb2 = 6;
  //walk button 2
const int ws = 5;
  //walk sign light
int buttonState = 0;
int buttonState2 = 0;
//for reading button status (on/off)

const int answer = 42;
//answer to life, the universe, and everything

void setup(){
  //this defines weather the item is an input or output
    //OUTPUT is a light, INPUT is a button
  pinMode(nsr,OUTPUT);
  pinMode(nsy,OUTPUT);
  pinMode(nsg,OUTPUT);
  pinMode(ewr,OUTPUT);
  pinMode(ewy,OUTPUT);
  pinMode(ewg,OUTPUT);
  pinMode(wb1,INPUT);
  pinMode(wb2,INPUT);
  pinMode(ws,OUTPUT);
}

void loop(){

//East-West runs through full light cycle

//north-south red light starts on red
  digitalWrite(nsr,HIGH);
  digitalWrite(nsy,LOW);
  digitalWrite(nsg,LOW);
  delay(2000);

//east-west light green
  digitalWrite(ewr,LOW);
  digitalWrite(ewy,LOW);
  digitalWrite(ewg,HIGH);
  delay(10000);
//east-west yellow
  digitalWrite(ewy,HIGH);
  digitalWrite(ewg,LOW);
  delay(5000);
//east-west red
  digitalWrite(ewr,HIGH);
  digitalWrite(ewy,LOW);
  delay(2000);

//check crosswalk
  buttonState = digitalRead(wb1);
  buttonState2 = digitalRead(wb2);
  if (buttonState == HIGH) {
// turn red lights all on
    digitalWrite(nsr,HIGH);
    digitalWrite(ewr,HIGH);
    delay(3000);
// turn walk sign on
    digitalWrite(ws,HIGH);
    delay(10000);
    digitalWrite(ws,LOW);
    delay(3000);
  } else if (buttonState2 == HIGH) {
// turn red lights all on
    digitalWrite(nsr,HIGH);
    digitalWrite(ewr,HIGH);
    delay(3000);
// turn walk sign on
    digitalWrite(ws,HIGH);
    delay(10000);
    digitalWrite(ws,LOW);
    delay(3000);
  } else {
    delay(1); //final option incase things dont work (just keeps going)
  }


//North-South Runs through full light cycle
//North-South green
  digitalWrite(nsr,LOW);
  digitalWrite(nsy,LOW);
  digitalWrite(nsg,HIGH);
//North-South yellow
  delay(10000);
  digitalWrite(nsy,HIGH);
  digitalWrite(nsg,LOW);
  delay(5000);

//check crosswalk
  buttonState = digitalRead(wb1);
  buttonState2 = digitalRead(wb2);
    //checks both buttons
  if (buttonState == HIGH) {
// turn red lights all on
    digitalWrite(nsy,LOW); //extra precautions
    digitalWrite(nsr,HIGH);
    digitalWrite(ewr,HIGH);
    delay(3000);
// turn walk sign on
    digitalWrite(ws,HIGH);
    delay(10000);
    digitalWrite(ws,LOW);
    delay(3000);
  } else if (buttonState2 == HIGH) {
// turn red lights all on
    digitalWrite(nsy,LOW);
    digitalWrite(nsr,HIGH);
    digitalWrite(ewr,HIGH);
    delay(3000);
// turn walk sign on
    digitalWrite(ws,HIGH);
    delay(10000);
    digitalWrite(ws,LOW);
    delay(3000);
  } else {
  delay(1); //final option incase things dont work (just keeps going)
  }
}