#include "WProgram.h"
// declare variables:
int switchPin = 2;      //  digital input pin for a switch
int switchPin2 = 5;
int switchPin3 = 12;
int yellowLedPin = 3;   //  digital output pin for an LED
int redLedPin = 4;      //  digital output pin for an LED
int greenLedPin = 11;
int switch_1_state = 0;    // the state of the switch
int switch_2_state = 0;
int switch_3_state = 0;
int hits = 0;
int prevState = 0;

void setup() {
  pinMode(switchPin, INPUT);       // set the switch pin to be an input
  pinMode(switchPin2, INPUT);       // set the switch pin to be an input
  pinMode(switchPin3, INPUT);       // set the switch pin to be an input
  
  pinMode(yellowLedPin, OUTPUT);   // set the yellow LED pin to be an output
  pinMode(redLedPin, OUTPUT);      // set the red LED pin to be an output
  pinMode(greenLedPin, OUTPUT); 
  
}

void loop() {
  // read the switch input:
  delay(500);
  switch_1_state = digitalRead(switchPin);
  switch_2_state = digitalRead(switchPin2);
  switch_3_state = digitalRead(switchPin3); 

  
  if ((switch_2_state == 1) && (switch_3_state == 1)) {
    
    if( hits == 3 )
    {
      digitalWrite(yellowLedPin, HIGH);   // turn on the yellow LED
      digitalWrite(redLedPin, HIGH);     // turn on the red LED
      digitalWrite(greenLedPin, LOW);     // turn off the green LED
      hits = 0;
    }
    else 
    {
      digitalWrite(yellowLedPin, LOW);   // turn off the yellow LED
      digitalWrite(redLedPin, LOW);     // turn off the red LED
      digitalWrite(greenLedPin, HIGH);    // turn on the green LED
    }
    
    /*if(prevState != switch_1_state){
       hits++;
       prevState = switch_1_state;
    }*/
    if(switch_1_state == 1){
      hits++;
    }
  } 
  else {
    // if the switches are all off, then LEDs are all off
    digitalWrite(yellowLedPin, LOW);   // turn off the yellow LED
    digitalWrite(redLedPin, LOW);     // turn off the red LED
    digitalWrite(greenLedPin, LOW);     // turn on the red LED
  }
}