class Controller:
GENERATIONUPDATE = pygame.USEREVENT + 1
def __init__(self, board: Board, cell_size):
self._board = board
self._ui = Ui(cell_size, self._board)
self._new_generation_delay = 100
self._quit = False
self._generation_update_enabled = False
# Mouse motions would trigger unnecessary redraw events very frequently
pygame.event.set_blocked(pygame.MOUSEMOTION)
def run(self):
pygame.init()
while not self._quit:
self._update_ui()
event = pygame.event.wait()
self._handle_event(event)
pygame.quit()
def _update_ui(self):
self._ui.draw_game(self._board)
pygame.display.update()
def _handle_event(self, event):
if event.type == pygame.QUIT:
self._quit = True
elif event.type == pygame.MOUSEBUTTONDOWN:
self._handle_mouse_event()
elif event.type == pygame.KEYDOWN:
self._handle_keydown_event(event)
elif event.type == Controller.GENERATIONUPDATE:
self._board = gamerules.apply_new_generation(self._board)
def _handle_mouse_event(self):
x, y = self._ui.mouse_coordinates_to_cell()
self._board.toggle_living(x, y)
def _handle_keydown_event(self, event):
if event.key == pygame.K_r:
self._set_generationupdate_enabled(True)
elif event.key == pygame.K_SPACE:
self._on_space_pressed()
elif event.key == pygame.K_MINUS:
self._new_generation_delay = round(self._new_generation_delay *
1.2)
self._update_generationupdate_timer_delay()
elif event.key == pygame.K_PLUS:
self._new_generation_delay = round(self._new_generation_delay *
0.8)
self._update_generationupdate_timer_delay()
elif event.key == pygame.K_ESCAPE:
self._quit = True
def _set_generationupdate_enabled(self, enable):
if enable == self._generation_update_enabled:
return
if enable:
self._update_generationupdate_timer_delay()
else:
pygame.time.set_timer(Controller.GENERATIONUPDATE, 0)
self._generation_update_enabled = enable
def _on_space_pressed(self):
if self._generation_update_enabled:
self._set_generationupdate_enabled(False)
else:
self._post_single_generationupdate_event()
@staticmethod
def _post_single_generationupdate_event():
pygame.event.post(pygame.event.Event(Controller.GENERATIONUPDATE))
def _update_generationupdate_timer_delay(self):
pygame.time.set_timer(Controller.GENERATIONUPDATE,
self._new_generation_delay)
