class GameManager(object):
def __init__(self):
random.seed()
pygame.display.set_caption('INVADER')
self.screen = pygame.display.set_mode(SCREEN_RECT.size)
self.clock = pygame.time.Clock()
self.scene = SceneTitle(self)
self.running = True
def run(self):
while self.running:
pressed_keys = pygame.key.get_pressed()
filtered_events = self.handle_events(pressed_keys)
if filtered_events is None:
self.stop_running()
else:
self.update(filtered_events, pressed_keys)
self.draw()
self.clock.tick(FPS)
def update(self, filtered_events, pressed_keys):
self.scene.update(filtered_events, pressed_keys)
def draw(self):
self.screen.fill((0, 0, 0))
self.scene.draw(self.screen)
pygame.display.update()
def change_scene(self, next_scene):
self.scene = next_scene
def stop_running(self):
self.running = False
def handle_events(self, pressed_keys):
filtered_events = []
for event in pygame.event.get():
if event.type == QUIT:
return None
elif event.type == KEYDOWN:
if event.key == K_F4 and (pressed_keys[K_LALT] or pressed_keys[K_RALT]):
return None
elif event.key == K_ESCAPE:
return None
filtered_events.append(event)
return filtered_events