#include <MD_MAX72xx.h>
#include <ESP32Servo.h>

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 3
#define DATA_PIN 23
#define CS_PIN 21
#define CLK_PIN 18
#define SERVO_PIN 19

MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

int A[8][8] = {0};
Servo servo;

unsigned long cas = 0;
int interval = 1000;
bool state = 0;

void setup() {
  Serial.begin(115200);
  mx.begin();
  mx.clear();
  randomSeed(analogRead(0));

  servo.attach(SERVO_PIN);
  servo.write(0);
}

void loop() {

  if (millis() - cas >= interval) {
    state = 1;

    for (int i = 0; i < 8; i++) {
      for (int j = 0; j < 24; j++) {
        mx.setPoint(i, j, A[i][j]);
      }
    }
        if (A[7][0] == 1) {
      servo.write(90);
    } else {
      servo.write(0);
    }

    cas = millis();
  }

  if (state == 1) {
    for (int i = 7; i > 0; i--) {
      for (int j = 0; j < 8; j++) {
        A[i][j] = A[i - 1][j];
      }
    }
    for (int j = 0; j < 8; j++) {
      A[0][j] = 0;
    }

    int pocet = 0;
    while (pocet < 5) {
      int a = random(0, 24);
      if (A[0][a] == 0) {
        A[0][a] = 1;
        pocet++;
      }
    }

    state = 0;
  }

}