def _fire_alien(self):
# for alien in self.aliens.sprites():
alien = random.choice(self.aliens.sprites())
new_alien_bullet = AlienBullet(self)
self.alien_bullets.add(new_alien_bullet)
new_alien_bullet.rect.midbottom = alien.rect.center
new_alien_bullet.y = float(alien.rect.y)
self.settings.last_alien_shot = time.clock()
def create_alien_bullet(ai_settings, screen, alien_bullets): """ Create alien bullets which start position's based on the random position of the fleet of aliens """ while (len(alien_bullets) < ai_settings.alien_bullets_allowed): alien_bullet = AlienBullet(ai_settings, screen) chosen_alien = choice(alien_list) alien_bullet.rect.x = chosen_alien.rect.x alien_bullet.y = float(chosen_alien.rect.y) alien_bullet.rect.y = alien_bullet.y alien_bullets.add(alien_bullet)
def create_alien_bullet(ai_settings, screen, aliens, ship, alien_bullets):
for alien in aliens:
if round(time.time(), 1) - alien.las_fire_time >= ai_settings.alien_bullet_time and \
alien.rect.bottom < ai_settings.screen_height / 2:
alien_bullet = AlienBullet(ai_settings, screen, alien, ship)
alien_bullets.add(alien_bullet)
alien.update_last_fire_time()
def update(self):
"""Move the aliens, animates every 50 loops, and sets up aliens shooting lasers"""
if self.index == 3:
self.x += self.ai_settings.ufo_speed_factor
else:
self.x += (self.ai_settings.alien_speed_factor *
self.ai_settings.fleet_direction)
self.rect.x = self.x
if self.delay == 50 and self.index != 3:
if not self.animate:
self.image = pygame.image.load(self.img2[self.index])
self.animate = True
elif self.animate:
self.image = pygame.image.load(self.img[self.index])
self.animate = False
self.delay = 0
else:
self.delay += 1
# Shoots lasers at random intervals
if self.delay2 == self.timer:
if len(self.alien_bullets
) < self.ai_settings.alien_bullets_allowed:
new_bullet = AlienBullet(self.ai_settings, self.screen,
self.rect.x, self.rect.y)
self.alien_bullets.add(new_bullet)
self.delay2 = 0
self.timer = random.randint(300, 701)
else:
self.delay2 += 1
def aliens_shooting(ai_settings, screen, aliens, alien_bullets):
"""Make bottommost aliens randomly shoot their own bullets."""
for alien in aliens:
if alien.bottommost and (
randint (0, 10000) in (
range(0, int(ai_settings.alien_bullet_chance)))):
alien_bullet = AlienBullet(ai_settings, screen, alien)
alien_bullets.add(alien_bullet)
alien_bullets.update()
def alien_shoot(self, alien):
"""Create a bullet from an alien."""
self.sounds.alien_bullet_sound.play()
new_bullet = AlienBullet(screen=self.screen,
sprite_sheet=self.sprite_sheet,
x=alien.rect.x,
y=alien.rect.y,
version=random.randint(0, 1))
self.alien_bullets.add(new_bullet)
def fire_random_alien_bullet(ai_settings, screen, aliens, alien_bullets):
"""Fire a alien bullet from a random alien in the fleet"""
firing_alien = random.choice(aliens.sprites())
if len(alien_bullets) < ai_settings.alien_bullet_allowed and \
(ai_settings.alien_bullet_stamp is None or
(abs(pygame.time.get_ticks() - ai_settings.alien_bullet_stamp) > ai_settings.alien_bullet_time)):
new_alien_bullet = AlienBullet(ai_settings, screen, firing_alien)
firing_alien.fire_weapon()
alien_bullets.add(new_alien_bullet)
def fire_alien_bullet(sw_settings, screen, aliens, aliens_bullets):
alien_y_values = [alien.rect.y for alien in aliens.sprites()]
max_alien_y = max(alien_y_values)
bottom_aliens = []
for alien in aliens.sprites():
if alien.rect.y == max_alien_y:
bottom_aliens.append(alien)
for alien in bottom_aliens:
new_alien_bullet = AlienBullet(sw_settings, screen, alien)
aliens_bullets.add(new_alien_bullet)
def fire_random_alien_bullet(ai_settings, screen, aliens, alien_bullets):
"""Random bullets fire from aliens randomly"""
# Alien fire randomly
firing_alien = random.choice(aliens.sprites())
if len(alien_bullets) < ai_settings.alien_bullet_allowed and (ai_settings.alien_bullet_stamp is None or (abs(pygame.time.get_ticks() - ai_settings.alien_bullet_stamp) > ai_settings.alien_bullet_time)):
new_alien_bullet = AlienBullet(ai_settings, screen, firing_alien)
# Fire from alien
firing_alien.shoot_fire()
# Create new bullet
alien_bullets.add(new_alien_bullet)
def alien_shooting(ai_settings, screen, ship, alien_bullets, aliens):
alien_bullets.update()
# Get rid of bullets that have disappeared.
for alien in aliens.sprites():
i = alien.rect.y
# if len(alien_bullets) < ai_settings.bullets_allowed:
bullet_sound = pygame.mixer.Sound("sounds/fire_sound.ogg")
pygame.mixer.Sound.play(bullet_sound)
new_bullet = AlienBullet(ai_settings, screen, ship, i)
alien_bullets.add(new_bullet)
def fire_alien_bullet(ai_settings, screen, aliens, alien_bullets):
"""Fire an alien bullet from a random alien every 5 seconds"""
try:
#Choose a random alien
alien_sprites_list = aliens.sprites()
rand_alien_index = randint(0, len(alien_sprites_list))
chosen_alien = alien_sprites_list[rand_alien_index]
#Have the chosen alien fire an alien bullet
new_alien_bullet = AlienBullet(ai_settings, screen, chosen_alien)
alien_bullets.add(new_alien_bullet)
except IndexError:
pass
def fire_alien_bullet(si_settings, aliens, alien_bullets, screen):
""""Fire a bullet from a random alien once every couple of hundred frames"""
# set firing time
random_fire = random.randint(-si_settings.alien_firing_spread,
si_settings.alien_firing_spread)
time_to_next_bullet = si_settings.alien_firing_rate + random_fire
if len(alien_bullets) < si_settings.alien_bullets_allowed and len(
aliens) > 0:
alien = select_firing_alien(aliens)
new_alien_bullet = AlienBullet(si_settings, screen, alien)
alien_bullets.add(new_alien_bullet)
return time_to_next_bullet
def update_shooting_aliens(ai_settings, stats, scoreboard, screen, ship,
aliens, moving_aliens, shooting_aliens,
alien_bullets):
"""Update the position of all aliens in the fleet"""
for shooting_alien in shooting_aliens:
shooting_alien.update()
if shooting_alien.fire_bullet() == 0:
new_bullet = AlienBullet(ai_settings, screen, shooting_alien)
alien_bullets.add(new_bullet)
screen_rect = screen.get_rect()
for shooting_alien in shooting_aliens:
if shooting_alien.rect.right >= screen_rect.right:
#as if the ship got hit
shooting_aliens.remove(shooting_alien)
if len(shooting_aliens) == 0:
#as if the ship got hit
create_shooting_fleet(ai_settings, screen, shooting_aliens)
def update_aliens(ai_settings, screen, stats, sb, ship, aliens, bullets,
alien_bullets):
check_fleet_edges(ai_settings, aliens)
if pygame.sprite.spritecollideany(ship, aliens):
ship_hit(stats, sb, ship, aliens, bullets, alien_bullets)
check_aliens_bottom(screen, stats, sb, ship, aliens, bullets,
alien_bullets)
num = random.randint(1, 42)
count = 1
num2 = random.randint(1, 100)
for alien in aliens.sprites():
if count == num:
if num2 == 1:
new_bullet = AlienBullet(ai_settings, screen, alien)
alien_bullets.add(new_bullet)
count += 1
def create_alien_bullets(aliens, screen, stats, ai_settings, alien_bullets, ship): for alien in aliens: alien_bullet = AlienBullet(screen, alien, ai_settings, ship) alien_bullets.add(alien_bullet)
def _fire_alien_bullet(self):
"""Create new alien bullet and add it to the alien bullet's group"""
if len(self.alien_bullets) < self.settings.alien_bullets_allowed:
new_bullet = AlienBullet(self)
self.alien_bullets.add(new_bullet)
self.alien_fire_sound.play()
def shot(self, bullets):
bullet = AlienBullet(self.screen, self.settings, self)
bullets.add(bullet)
def _fire_queen_bullet(self):
"""Creates a new bullet for the queen and adds it to the bullet group"""
new_bullet = AlienBullet(self)
self.alien_bullets.add(new_bullet)
def fire_bullet(self):
new_bullet = AlienBullet(self.ai_setting, self.screen, self.rect)
new_bullet.rect.centerx = self.rect.centerx
new_bullet.rect.top = self.rect.bottom
new_bullet.rect.y = self.rect.y
self.alien_bullets.add(new_bullet)
def shoot_boss_bullets(settings, screen, aliens, boss_bullets, boss):
if boss.shoot():
bullet = AlienBullet(settings, screen, boss)
boss_bullets.add(bullet)
def shoot_alien_bullets(settings, screen, aliens, alien_bullets, alien):
for alien in aliens.sprites():
if random.randrange(101) == 100:
if len(alien_bullets) < settings.alien_bullets_allowed:
bullet = AlienBullet(settings, screen, alien)
alien_bullets.add(bullet)
def alien_fire_bullet(ai_settings, screen, alien, alien_bullets):
"""Create an alien bullet"""
new_alien_bullet = AlienBullet(ai_settings, screen, alien)
alien_bullets.add(new_alien_bullet)
def fire_aliens_bullet(ai_settings, screen, aliens, aliens_bullets):
"""如果没有达到限制，就发射一颗子弹"""
if len(aliens_bullets) < ai_settings.bullets_allowed:
new_bullet = AlienBullet(ai_settings, screen,
random.choice(aliens.sprites()))
aliens_bullets.add(new_bullet)