// These constants won't change:

#include <TM1637.h> //Include the library for the 4 digit display

const int CLK = 11; // Set the clock pin for the 4 digit display
const int DIO = 12; // Set the digital input pin for the 4 digit display

//Create a virtual instance of the display
TM1637 tm(CLK, DIO);

const int NumberOfTargets = 2; //Set the number of targets

int TargetStatus[NumberOfTargets]; //Declare an array to hold the target status
int DetectorPins [NumberOfTargets]; // Declare an array to hold the pins for the shot detectors

int TotalTargetStatus;

//Set the detectorpins
DetectorPins = {A1,A2};

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


void setup() {


//Set the initial status of the targets (Set them all to 1 for all targets live initially)
for(int i=0;i<NumberOfTargets;i++){
    TargetStatus[i] = 1;
    }

// Initialise the 4 digit display to act as a score counter
  tm.init();
  tm.set(BRIGHT_TYPICAL);


///Show a countdown on the score counter
ScoreCounter=0003;
DisplayScore(ScoreCounter);
delay(1000); //Hold the score for 1 second
ScoreCounter=0002;
DisplayScore(ScoreCounter);
delay(1000); //Hold the score for 1 second
ScoreCounter=0001;
DisplayScore(ScoreCounter);
delay(1000); //Hold the score for 1 second
ScoreCounter=0000;
DisplayScore(ScoreCounter);
ScoreCounter=9999;
}

void loop() {

for(int i=0;i<NumberOfTargets;i++){
    if ((analogRead(DetectorPins(i)))> HitThreshold){
      TargetStatus(i) = 1;
    }else{
    }

    delay(5);  // delay in between reads for stability

     
   }

TotalTargetStatus=0;

for(int i=0;i<NumberOfTargets;i++){
      TotalTargetStatus = TotalTargetStatus + TargetStatus(i);
     }


if (TotalTargetStatus==0){ //If all of the targets have been hit
   
 // Display The Score  
 DisplayScore(ScoreCounter); 
 Target1Hit=false;

}else{

        if (ScoreCounter>0) {
        ScoreCounter=ScoreCounter-1;
        }
        else{
          ScoreCounter = 0;
        }

        DisplayScore(ScoreCounter); 
  }
}


void DisplayScore(int ScoreToDisplay){
  tm.display(0, (ScoreToDisplay / 1000) % 10);
  tm.display(1, (ScoreToDisplay / 100) % 10);
  tm.display(2, (ScoreToDisplay / 10) % 10);
  tm.display(3, (ScoreToDisplay % 10));
}