#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h> 

// Пин подключения к TFT
#define TFT_CLK 13
#define TFT_CS 10
#define TFT_DC 9
#define TFT_RST 8

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

const int N = 20;
const int M = 30;
int snow[N][M];

void generate_snows(int n, int m){
  for (int i = 0; i < n; i += 1){
    for (int j = 0; j < m; j += 1){
      snow[i][j] = 0;
    }
  }

  int cnt = 0;
  int k = random(5, n);
  while (cnt + k < m){
    int snow_size = k / 2 * 2 + 1;

    int s[snow_size][snow_size];
    if (k % 2 == 0){
      int a = snow_size;
      for (int i = 0; i < a; i ++){
        for (int j = 0; j < a; j ++){
          s[i][j] = 0;
        }
      }
      for (int i = 0; i < a; i ++){
        s[i][i] = 1;
        s[i][a - 1 - i] = 1;
        s[i][(a - 1) / 2] = 1;
        s[(a - 1) / 2][i] = 1;
      }
    }
    else {
      int a = snow_size;
      for (int i = 0; i < a; i ++){
        for (int j = 0; j < a; j ++){
          s[i][j] = 0;
        }
      }
      for (int i = 0; i < a; i ++){
        s[i][(a - 1) / 2] = 1;
        s[(a - 1) / 2][i] = 1;
      }
      for (int r = (a - 1) / 2; r >= 0; r -= 2){

        int cnt1 = (a - 1) / 2;
        int cnt2 = (a - 1) / 2; 
        for (int i = r; i <= (a - 1) / 2; i ++){
          s[i][cnt1] = 1;
          s[i][cnt2] = 1;
          s[a - 1 - i][cnt1] = 1;
          s[a - 1 - i][cnt2] = 1;
          cnt1 += 1;
          cnt2 -= 1;
        }
      }
    }

    int place = random(0, n - k);
    for (int i = place; i < place + snow_size; i += 1){
      for (int j = cnt; j < cnt + snow_size; j += 1){
        snow[i][j] = s[i - place][j - cnt]; 
      }
    }
    cnt += snow_size;
    k = random(5, n);
  }
  
}

void drawSnowflake() {
  tft.fillScreen(ILI9341_BLACK); // Очистить экран
  generate_snows(N, M);
  
  int centerX = (tft.width() - M) / 2;
  int centerY = (tft.height() - N) / 2;

  for (int i = 0; i < N; i++) {
    for (int j = 0; j < M; j++) {
      if (snow[i][j] == 1) {
        tft.drawPixel(centerX + j, centerY + i, ILI9341_WHITE);
      }
    }
  }
}

// void setup() {

//   // put your setup code here, to run once:
//   Serial.begin(9600);

//   generate_snows(N, M);

//   for (int i = 0; i < N; i += 1){
//     for (int j = 0; j < M; j += 1){
//       Serial.print(snow[i][j]);
//       delay(200);
//     }
//     Serial.println("");
//     delay(200);
//   }
//   delay(300);
// }


void setup() {
  Serial.begin(9600);
  tft.begin();
  tft.setRotation(1); // Повернуть дисплей, если нужно

  drawSnowflake(); 
}

void loop() {
  delay(100); 
  drawSnowflake(); 
}