def update_bullets(ai_settings: Settings, stats: GameStats,
screen: pygame.Surface, sb: ScoreBoard, ship: Ship,
aliens: pygame.sprite.Group,
bullets: pygame.sprite.Group) -> NoReturn:
"""更新子弹的位置，并删除已消失的子弹"""
# 更新子弹的位置
bullets.update()
# 删除已消失的子弹
for bullet in bullets.copy():
if bullet.rect.bottom <= 0:
bullets.remove(bullet)
check_bullet_alien_collisions(ai_settings, stats, sb, aliens, bullets,
screen, ship)
def update(self, gold: pygame.sprite.Group) -> None:
"""Update the spinning animation and possibly jump."""
# Update the disappear timer and remove from group if time.
self._disappear_timer += 1
if self._disappear_timer % self._disappear_time == 0:
gold.remove(self)
else:
# Update the spinning animation.
self._rotation_timer += 1
if self._rotation_timer % 3 == 0:
self._current_image += 1
self.image = self._images[self._current_image % len(self._images)]
loc: tuple = self.rect.topleft
self.rect = self.image.get_rect()
self.rect.topleft = loc
def update(self, asteroids: pygame.sprite.Group, player: rocket.rocket,
dt: float, bullets: list):
if self.status == ASTEROID_STATUS.ALIVE:
"""
Calculates acceleration
"""
inp = [None] * self.network_inp_count
# inp[0] = self.velocity[0]
# inp[1] = self.velocity[1]
inp[0] = player.position[0] - self.position[0]
inp[1] = player.position[1] - self.position[1]
out = self.network.calculate(np.array(inp))
"""
Updates the velocity and position
"""
dx = player.position[0] - self.position[0]
dy = player.position[1] - self.position[1]
dist_sq = dx**2 + dy**2
self.velocity[0] += out[0] + 0.001 * dx * asteroid_accel_coeff * dt
self.velocity[1] += out[1] + 0.001 * dy * asteroid_accel_coeff * dt
self.position[0] += self.velocity[0] * asteroid_vel_coeff * dt
self.position[1] += self.velocity[1] * asteroid_vel_coeff * dt
self.rect.center = (int(self.position[0]), int(self.position[1]))
"""
Calculates the average square root of
the distance between asteroid and the player
"""
if dist_sq < self.least_dist_sq or self.least_dist_sq < 0:
self.least_dist_sq = dist_sq
"""
Checks if asteroid has collided with another
asteroid or bullet
"""
asteroids.remove(self)
for asteroid in asteroids:
dx = asteroid.position[0] - self.position[0]
dy = asteroid.position[1] - self.position[1]
if dx**2 + dy**2 <= 4 * (asteroid.radius + self.radius)**2:
self.die()
asteroid.die()
asteroids.add(self)
return
asteroids.add(self)
for bult in bullets:
if self.rect.collidepoint(bult.position[0], bult.position[1]):
bullets.remove(bult)
self.destroyed_by_player = True
self.die()
return
if (pygame.time.get_ticks() - self.last_avg_dist_sample_tick) /\
1000 >= 0.01:
dx = self.position[0] - target_position[0]
dy = self.position[1] - target_position[1]
if self.avg_dist_sqrt < 0:
self.avg_dist_sqrt
total = self.avg_dist_sqrt * \
self.avg_dist_samples + (dx**2 + dy**2)**0.5
self.avg_dist_samples += 1
self.avg_dist_sqrt = total / self.avg_dist_samples
self.last_avg_dist_sample_tick = pygame.time.get_ticks()
if self.position[0] < 0-2*self.radius or\
self.position[0] > window_width+2*self.radius or\
self.position[1] < 0-2*self.radius or\
self.position[1] > window_height+2*self.radius:
self.die()
return
def _invisible_sprites(self, group: pygame.sprite.Group,
sprites: List[Sprite]):
"""groupからspritesを削除
"""
group.remove(sprites)
