#define BUTTON 13
#define BUTTON_2 12

byte which_animation = 2;
byte const pinCount = 8;
byte pinsFor7seg[pinCount] = {2, 3, 4, 5, 6, 7, 8, 9}; // {A,B,C,D,E,F,G,DP}
byte numbers[23][pinCount] = {
  {1, 1, 1, 1, 1, 1, 0, 0}, //0
  {0, 1, 1, 0, 0, 0, 0, 0}, //1
  {1, 1, 0, 1, 1, 0, 1, 0}, //2
  {1, 1, 1, 1, 0, 0, 1, 0}, //3
  {0, 1, 1, 0, 0, 1, 1, 0}, //4
  {1, 0, 1, 1, 0, 1, 1, 0}, //5
  {1, 0, 1, 1, 1, 1, 1, 0}, //6
  {1, 1, 1, 0, 0, 0, 0, 0}, //7
  {1, 1, 1, 1, 1, 1, 1, 0}, //8
  {1, 1, 1, 1, 0, 1, 1, 0}, //9
  {1, 0, 0, 1, 0, 0, 1, 0}, //error - 10
  {0, 0, 0, 0, 0, 0, 0, 0}, //erase - 11
  {1, 0, 0, 0, 0, 0, 0, 0}, // A - 12
  {0, 1, 0, 0, 0, 0, 0, 0}, // B - 13
  {0, 0, 1, 0, 0, 0, 0, 0}, // C - 14
  {0, 0, 0, 1, 0, 0, 0, 0}, // D - 15
  {0, 0, 0, 0, 1, 0, 0, 0}, // E - 16
  {0, 0, 0, 0, 0, 1, 0, 0}, // F - 17
  {0, 0, 0, 0, 0, 0, 1, 0}, // G - 18
  {0, 1, 1, 0, 0, 0, 0, 1}, //1 + DP - 19
  {1, 1, 0, 1, 1, 0, 1, 1}, //2 + DP - 20
  {1, 1, 1, 1, 0, 0, 1, 1}, //3 + DP - 21
  {0, 1, 1, 0, 0, 1, 1, 1}, //4 + DP - 22
};

void setup() {
  for (byte pin : pinsFor7seg) {
    pinMode(pin, OUTPUT);
  }
  pinMode(BUTTON, INPUT_PULLUP); //automaticke zapojení PULLUP do obvodu
  pinMode(BUTTON_2, INPUT_PULLUP); //automaticke zapojení PULLUP do obvodu
  showDigit(8, true); //kontrola zdali svítí vsechny segmenty
  delay(1000);
}

void loop() {
  if (digitalRead(BUTTON_2) == LOW) {
    switch (which_animation) {
      case 1:
        showDigit(19, true);
        which_animation = 2; // had
        break;
      case 2:
        showDigit(20, true); // nula
        which_animation = 3;
        break;
      case 3:
        showDigit(21, true); // probliknutí
        which_animation = 4;
        break;
      case 4:
        showDigit(22, true); // animace načítání čísla
        which_animation = 1;
        break;
    }
    delay(500);
  }

  if (digitalRead(BUTTON) == LOW) {
    int randomnumber = random(6) + 1;
    switch (which_animation) {
      case 1:
        if (randomnumber == 1) {
          subanimation_1 ();
        } else if (randomnumber == 2) {
          subanimation_2 ();
        } else if (randomnumber == 3) {
          subanimation_3 ();
        } else if (randomnumber == 4) {
          subanimation_4 ();
        } else if (randomnumber == 5) {
          subanimation_5 ();
        } else if (randomnumber == 6) {
          subanimation_6 ();
        }

        break;
      case 2:
        animation();
        break;
      case 3:
        animation_2();
        break;
      case 4:
        animation_3();
        break;
    }
    delay(75);
    showDigit(randomnumber, true);
  }
}



void animation() { //animace jenž je první v cyklu
  showDigit(11, true);
  delay(222);
  showDigit(15, true);// D - 15
  delay(111);
  showDigit(14, true);// C - 14
  delay(111);
  showDigit(18, true);// G - 18
  delay(111);
  showDigit(17, true);// F - 17
  delay(111);
  showDigit(12, true);// A - 12
  delay(111);
  showDigit(13, true);// B - 13
  delay(111);
  showDigit(18, true);// G - 18
  delay(111);
  showDigit(16, true);// E - 16
  delay(111);
  showDigit(15, true);// D - 15

}
void animation_2() { //animace jenž je druhá v cyklu

  delay(250);
  showDigit(15, true);// D - 15
  delay(111);
  showDigit(14, true);// C - 14
  delay(111);
  showDigit(13, true);// B - 13
  delay(111);
  showDigit(12, true);// A - 12
  delay(111);
  showDigit(17, true);// F - 17
  delay(111);
  showDigit(16, true);// E - 16
  delay(111);
  showDigit(15, true);// D - 15

}
void animation_3() {
  delay(500);
  showDigit(11, true);
  delay(250);
}
void animation_4() {
  delay(250);
  showDigit(18, true);
  delay(250);
}

void subanimation_1() {
  delay(500);
  showDigit(14, true);
  delay(500);
  showDigit(13, true);
  delay(500);
}

void subanimation_2() {
  delay(500);
  showDigit(12, true);
  delay(500);
  showDigit(13, true);
  delay(500);
  showDigit(18, true);
  delay(500);
  showDigit(16, true);
  delay(500);
  showDigit(15, true);
  delay(500);
}

void subanimation_3() {
  delay(500);
  showDigit(12, true);
  delay(500);
  showDigit(13, true);
  delay(500);
  showDigit(18, true);
  delay(500);
  showDigit(14, true);
  delay(500);
  showDigit(15, true);
  delay(500);
}

void subanimation_4() {
  delay(500);
  showDigit(14, true);
  delay(500);
  showDigit(13, true);
  delay(500);
  showDigit(18, true);
  delay(500);
  showDigit(17, true);
  delay(500);
}

void subanimation_5() {
  delay(500);
  showDigit(12, true);
  delay(500);
  showDigit(17, true);
  delay(500);
  showDigit(18, true);
  delay(500);
  showDigit(14, true);
  delay(500);
  showDigit(15, true);
  delay(500);
}

void subanimation_6() {
  delay(500);
  showDigit(12, true);
  delay(500);
  showDigit(17, true);
  delay(500);
  showDigit(16, true);
  delay(500);
  showDigit(15, true);
  delay(500);
  showDigit(14, true);
  delay(500);
  showDigit(18, true);
  delay(500);
}


void showDigit(byte number, bool anode) {
  for (int i = 0; i < pinCount; i++) {
    if (anode) digitalWrite(pinsFor7seg[i], !numbers[number][i]);
    else digitalWrite(pinsFor7seg[i], numbers[number][i]);
  }
}