#include <LedControl.h>


LedControl lc = LedControl(12, 11, 10, 2);


bool matrix = true;


// previous time for the tasks depending upon time.
unsigned long prevTime_T1 = millis();
unsigned long prevTime_T2 = millis();
unsigned long prevTime_T3 = millis();
unsigned long prevTime_T4 = millis();

// time intervals for the tasks
long interval_T1 = 3500;
long interval_T2 = 2500;
long interval_T3 = 1500;
long interval_T4 = 4500;

byte eyeOpen[] = {
  0b00111100,
  0b01111110,
  0b11111111,
  0b11100111,
  0b11100111,
  0b11111111,
  0b01111110,
  0b00111100
};

byte eyeClose[] = {
  0b00000000,
  0b00000000,
  0b00111100,
  0b11111111,
  0b11111111,
  0b00111100,
  0b00000000,
  0b00000000
};

byte eyeToLeft[] = {
  0b00111100,
  0b01111110,
  0b11111111,
  0b10011111,
  0b10011111,
  0b11111111,
  0b01111110,
  0b00111100
};

byte eyeToRight[] = {
  0b00111100,
  0b01111110,
  0b11111111,
  0b11111001,
  0b11111001,
  0b11111111,
  0b01111110,
  0b00111100
};

byte eyeToUp[] = {
  0b00111100,
  0b01100110,
  0b11100111,
  0b11111111,
  0b11111111,
  0b11111111,
  0b01111110,
  0b00111100
};

byte eyeToDown[] = {
  0b00111100,
  0b01100110,
  0b11100111,
  0b11111111,
  0b11111111,
  0b11111111,
  0b01111110,
  0b00111100
};

byte heart[] = {
  B00000000,
  B01100110,
  B11111111,
  B11111111,
  B01111110,
  B00111100,
  B00011000,
  B00000000
};

byte heart2[] = {
  B01100110,
  B11111111,
  B11111111,
  B11111111,
  B11111111,
  B01111110,
  B00111100,
  B00011000
};


void setup() {
  lc.shutdown(1, false);
  lc.shutdown(0, false);
  lc.setIntensity(1, 8);
  lc.setIntensity(0, 8);
  lc.clearDisplay(0);
}

void loop() {

  unsigned long currentTime = millis();

  if (currentTime - prevTime_T1 > interval_T1) {
    if (matrix) {
      eyeLeft(eyeToDown);
      eyeRight(eyeToDown);
      delay(80);
      eyeLeft(eyeClose);
      eyeRight(eyeClose);
      delay(80);
      eyeLeft(eyeToDown);
      eyeRight(eyeToDown);
      matrix = false;
    } else {
      matrix = true;
    }

    prevTime_T1 = currentTime;
  }

}


void eyeLeft(byte Eye_Left[])
{
  for (int i = 0; i < 8; i++)
  {
    lc.setRow(1, i, Eye_Left[i]);
  }
}

void eyeRight(byte Eye_Right[])
{
  for (int i = 0; i < 8; i++)
  {
    lc.setRow(0, i, Eye_Right[i]);
  }
}