/**
   Simon Game for Arduino with Score display

   Copyright (C) 2022, Uri Shaked

   Released under the MIT License.
*/



/* Constants - define pin numbers for LEDs,
   buttons and speaker, and also the game tones: */


// These are connected to 74HC595 shift register (used to show game score):
const int LATCH_PIN = A1;  // 74HC595 pin 12
const int DATA_PIN = A0;  // 74HC595pin 14
const int CLOCK_PIN = A2;  // 74HC595 pin 11







/**
   Set up the Arduino board and initialize Serial communication
*/
void setup() {
  Serial.begin(9600);
  for (byte i = 0; i < 4; i++) {

  }

  pinMode(LATCH_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(DATA_PIN, OUTPUT);

  // The following line primes the random number generator.
  // It assumes pin A3 is floating (disconnected):

}

/* Digit table for the 7-segment display */
const uint8_t digitTable[] = {
  0b11000000,
  0b11111001,
  0b10100100,
  0b10110000,
  0b10011001,
  0b10010010,
  0b10000010,
  0b11111000,
  0b10000000,
  0b10010000,
};
const uint8_t DASH = 0b10111111;

void sendScore(uint8_t high, uint8_t low) 
{
  digitalWrite(LATCH_PIN, LOW);
  shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, low);
  shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, high);
  digitalWrite(LATCH_PIN, HIGH);
}

void displayScore() 
{
  int high = 8;
  int low = 8;
  sendScore(high ? digitTable[high] : 0xff, digitTable[low]);
}




void loop() {
  displayScore();

}