def _draw_active_cells(self):
'''draws active cells and checks for matched/landed cells'''
active_cells = Helper._get_active_cells(self._state)
landed_cells = Helper._get_landed_cells(self._state)
matched_cells = Helper._get_matched_cells(self._state)
if landed_cells and self._ticks * self._fall_tick_ratio > 1.6:
self._landed_sound.play()
if matched_cells and self._ticks * self._fall_tick_ratio > 1.6:
self._match_sound.play()
for cell in matched_cells:
self._score += 10
for cell in active_cells:
self._place_cell_in_board(cell)
