#include "grid.h"


void setup() {
  Serial.begin(9600);

  Grid<uint64_t, 5, 40> grid {};
  grid.set(1, 2, true);

  auto g2 {grid};
  g2.show();
}

void loop() {}

sketch.ino

diagram.json

# Wokwi Library List
# See https://docs.wokwi.com/guides/libraries

libraries.txt

grid.cpp

#pragma once

#include <Arduino.h>


template <class T, size_t n, size_t m>
class Grid {
public:
  void flip(size_t const x, size_t const y);
  bool get(size_t const x, size_t const y) const;
  void set(size_t const x, size_t const y, bool const v);
  void show() const;

private:
  void drawLine_() const;

  T data_[n] {};
};


template <class T, size_t n, size_t m>
void Grid<T, n, m>::flip(size_t const x, size_t const y) {
  data_[min(x, n - 1)] ^= 1 << min(y, m - 1);
}

template <class T, size_t n, size_t m>
bool Grid<T, n, m>::get(size_t const x, size_t const y) const {
  return data_[min(x, n - 1)] & 1 << min(y, m - 1);
}

template <class T, size_t n, size_t m>
void Grid<T, n, m>::set(size_t const x, size_t const y, bool const v) {
  if (get(x, y) != v) {
    flip(x, y);
  }
}

template <class T, size_t n, size_t m>
void Grid<T, n, m>::show() const {
  drawLine_();
  for (size_t x {0}; x < n; ++x) {
    Serial.print('|');
    for (size_t y {0}; y < m; ++y) {
      Serial.print(get(x, y) ? '#' : ' ');
    }
    Serial.println('|');
  }
  drawLine_();
}


template <class T, size_t n, size_t m>
void Grid<T, n, m>::drawLine_() const {
  Serial.print('+');
  for (size_t y {0}; y < m; ++y) {
    Serial.print('-');
  }
  Serial.println('+');
}