draw method

void draw()

Implementation

void draw() {
  for (var point in _points) {
    if (point == head) {
      drawChar(point, '🟦');
    } else if (_foodPoints.contains(point)) {
      drawChar(point, '🟧');
    } else {
      drawChar(point, '🟩');
    }
  }

  if (_oldTail != null) {
    drawChar(_oldTail!, '  ');
  }
}