// These constants won't change:
const int Target1DetectorPin = A1;   // pin that the sensor for the first target is attached to
const int Target2DetectorPin = A2;   // pin that the sensor for the second target is attached to
const int Target3DetectorPin = A3;   // pin that the sensor for the third target is attached to
const int Target1IndicatorPin = 2; // pin that the indicator for the first target is attached to
const int Target2IndicatorPin = 3; // pin that the indicator for the second target is attached to
const int Target3IndicatorPin = 4; // pin that the indicator for the third target is attached to

const int HitThreshold = 200;  // an arbitrary threshold level that's in the range of the analog input

bool Target1Hit = false;
bool Target2Hit= false;
bool Target3Hit= false;


void setup() {
// initialize serial communications:

pinMode(Target1IndicatorPin, OUTPUT);
pinMode(Target2IndicatorPin, OUTPUT);
pinMode(Target3IndicatorPin, OUTPUT);

Target1Hit = false;
Target2Hit= false;
Target3Hit= false;

}

void loop() {

//Start the sequence by turning on all of the lights. 
if (Target1Hit==false and Target2Hit==false and Target3Hit==false){
    digitalWrite(Target1IndicatorPin,HIGH);
    digitalWrite(Target2IndicatorPin,HIGH);
    digitalWrite(Target3IndicatorPin,HIGH);
}


  // read the values from the detectors:
  int Target1Value = analogRead(Target1DetectorPin);
  int Target2Value = analogRead(Target2DetectorPin);
  int Target3Value = analogRead(Target3DetectorPin);

  // if the analog value is high enough, turn on the LED:
  if (Target1Value > HitThreshold) {
    Target1Hit=true;
    digitalWrite(Target1IndicatorPin,LOW);
  } else {
    
  }
 delay(10);  // delay in between reads for stability

  if (Target2Value > HitThreshold) {
      Target2Hit=true;
      digitalWrite(Target2IndicatorPin,LOW);
  } else {
    
  }
 delay(10);  // delay in between reads for stability


   if (Target3Value > HitThreshold) {
      Target3Hit=true;
    digitalWrite(Target1IndicatorPin,LOW);
  } else {
    
  }
 delay(10);  // delay in between reads for stability



if (Target1Hit==true and Target2Hit==true and Target3Hit==true){ //If all of the targets have been hit
    //flash all of the lights 3 times    
    digitalWrite(Target1IndicatorPin,HIGH);
    digitalWrite(Target2IndicatorPin,HIGH);
    digitalWrite(Target3IndicatorPin,HIGH);
    delay(1000);
    digitalWrite(Target1IndicatorPin,LOW);
    digitalWrite(Target2IndicatorPin,LOW);
    digitalWrite(Target3IndicatorPin,LOW);
    delay(1000);
    digitalWrite(Target1IndicatorPin,HIGH);
    digitalWrite(Target2IndicatorPin,HIGH);
    digitalWrite(Target3IndicatorPin,HIGH);
    delay(1000);
    digitalWrite(Target1IndicatorPin,LOW);
    digitalWrite(Target2IndicatorPin,LOW);
    digitalWrite(Target3IndicatorPin,LOW);
    delay(1000);
    digitalWrite(Target1IndicatorPin,HIGH);
    digitalWrite(Target2IndicatorPin,HIGH);
    digitalWrite(Target3IndicatorPin,HIGH);
    delay(1000);
    digitalWrite(Target1IndicatorPin,LOW);
    digitalWrite(Target2IndicatorPin,LOW);
    digitalWrite(Target3IndicatorPin,LOW);
    delay(1000);

    //Then reset the sequence
    Target1Hit = false;
    Target2Hit= false;
    Target3Hit= false;
}






}