class GameScene(Scene):
def __init__(self, director, background=(0, 0, 0)):
super().__init__(director)
self.background = background
self.ship = Ship(director.screen)
self.ship_bullets_allowed = 3
self.laser_sound = pygame.mixer.Sound('assets/sounds/laser.ogg')
self.alein_explosion = pygame.mixer.Sound(
'assets/sounds/alien_explosion.ogg')
self.ship_explosion = pygame.mixer.Sound(
'assets/sounds/ship_explosion.ogg')
self.ufo_sound = pygame.mixer.Sound('assets/sounds/ufo.ogg')
self.background_sound = pygame.mixer.Sound(
'assets/sounds/background.ogg')
self.gg_sound = pygame.mixer.Sound('assets/sounds/game_over.ogg')
self.bullets = Group()
self.fleet = Group()
self.explosions = Group()
self.bunkers = Group()
self.fleet_drop_speed = 10
self.rows = 8
self.cols = self.get_number_aliens_x()
self.game_stats = GameStats(director)
self.old_ticks = pygame.time.get_ticks()
self.ufo_time = random.randint(15, 30) * 1000
self.ufo_ticks = pygame.time.get_ticks()
self.ufo = None
def exit(self):
self.game_stats.save_scores()
def reset(self, alien_speed=0.2):
self.game_stats.reset()
self.ship_bullets = 0
self.alien_speed = alien_speed
self.number_of_bunkers = 5
self.bullets.empty()
self.fleet.empty()
self.bunkers.empty()
self.create_fleet()
self.create_bunkers()
self.ship.reset()
self.game_stats.save_scores()
self.ufo_time = random.randint(15, 30) * 1000
self.ufo_ticks = pygame.time.get_ticks()
self.ufo = None
self.background_sound.play(-1)
def get_number_aliens_x(self):
alien = Alien(self.director.screen)
available_space_x = self.director.screen.get_rect().width - 2 * \
alien.rect.width
number_aliens_x = int(available_space_x / (2 * alien.rect.width))
return number_aliens_x
def create_alien(self, alien_number, row_number, alien_type):
alien = Alien(self.director.screen,
alien_type=alien_type,
speed_factor=self.alien_speed)
alien_width = alien.rect.width
alien.x = alien_width + 2 * alien_width * alien_number
alien.rect.x = alien.x
alien.rect.y = alien.rect.height + 2 * alien.rect.height * \
row_number
self.fleet.add(alien)
def create_fleet(self):
alien_type = 0
change_type = self.rows / 4
for row_number in range(self.rows):
if int(row_number % change_type) == 0:
alien_type += 1
for alien_number in range(self.cols):
self.create_alien(alien_number, row_number, alien_type)
def create_bunkers(self):
space = int(
(self.director.screen.get_rect().right -
((self.number_of_bunkers - 1) * 56)) / self.number_of_bunkers)
x = space
for i in range(self.number_of_bunkers):
self.bunkers.add(Bunker(self.director.screen, x))
x += space
def fire_bullet(self, rect, bullet_type="ship"):
if bullet_type == "ship":
if self.ship_bullets < self.ship_bullets_allowed:
new_bullet = Bullet(self.director.screen, rect.centerx,
rect.top)
self.bullets.add(new_bullet)
self.laser_sound.play()
self.ship_bullets += 1
else:
new_bullet = Bullet(self.director.screen, rect.centerx, rect.top,
(200, 0, 0), 1)
self.bullets.add(new_bullet)
self.laser_sound.play()
def keydown(self, key):
if key == pygame.K_RIGHT or key == pygame.K_d:
self.ship.moving_right = True
elif key == pygame.K_LEFT or key == pygame.K_a:
self.ship.moving_left = True
elif key == pygame.K_SPACE:
self.fire_bullet(self.ship.rect)
def keyup(self, key):
if key == pygame.K_RIGHT or key == pygame.K_d:
self.ship.moving_right = False
elif key == pygame.K_LEFT or key == pygame.K_a:
self.ship.moving_left = False
def create_explosion(self, center, character_type="alien"):
new_explosion = Explosion(self.director.screen, center)
self.explosions.add(new_explosion)
if character_type == "alien":
self.alein_explosion.play()
else:
self.ship_explosion.play()
def change_fleet_direction(self):
for alien in self.fleet.sprites():
alien.direction *= -1
alien.rect.y += self.fleet_drop_speed
def check_explosions(self):
for explosion in self.explosions.sprites():
if explosion.explosion == 8:
self.explosions.remove(explosion)
def check_fleet_edges(self):
for alien in self.fleet.sprites():
if alien.check_edges():
self.change_fleet_direction()
break
def check_fleet_bottom(self):
screen_bottom = self.director.screen.get_rect().bottom
if self.fleet.sprites()[-1].rect.bottom > screen_bottom:
self.lose_ship()
def check_bullets(self):
screen_height = self.director.screen.get_rect().height
for bullet in self.bullets.sprites():
if bullet.speed_factor < 0:
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
self.ship_bullets -= 1
else:
for alien in self.fleet.sprites():
if bullet.rect.colliderect(alien.rect):
self.game_stats.score += alien.alien_type * 10
self.create_explosion(alien.rect.center)
self.fleet.remove(alien)
self.bullets.remove(bullet)
self.ship_bullets -= 1
self.alein_explosion.play()
if self.ufo is not None:
if bullet.rect.colliderect(self.ufo.rect):
self.game_stats.score += random.randint(1, 5) * \
1000
self.create_explosion(self.ufo.rect.center)
self.ship_bullets -= 1
self.alein_explosion.play()
self.ufo = None
self.ufo_sound.stop()
for bunker in self.bunkers:
if bunker.collide(bullet.rect):
self.bullets.remove(bullet)
self.ship_explosion.play()
self.ship_bullets -= 1
if not bunker.standing():
self.bunkers.remove(bunker)
else:
if bullet.rect.top >= screen_height:
self.bullets.remove(bullet)
elif bullet.rect.colliderect(self.ship.rect):
self.create_explosion(self.ship.rect.center)
self.bullets.remove(bullet)
self.ship_explosion.play()
self.lose_ship()
for bunker in self.bunkers:
if bunker.collide(bullet.rect):
self.bullets.remove(bullet)
self.ship_explosion.play()
if not bunker.standing():
self.bunkers.remove(bunker)
def move_aliens_top(self):
alien = Alien(self.director.screen,
alien_type=self.fleet.sprites()[0].alien_type)
top_y = alien.rect.height
prev_alien_y = self.fleet.sprites()[0].rect.y
for alien in self.fleet.sprites():
if (alien.rect.y > prev_alien_y):
top_y += 2 * alien.rect.height
prev_alien_y = alien.rect.y
alien.rect.y = top_y
def lose_ship(self):
if self.game_stats.ships_left > 0:
self.game_stats.ships_left -= 1
self.move_aliens_top()
self.ship.reset()
else:
self.gg_sound.play()
self.background_sound.stop()
self.director.set_scene("menu")
def update(self):
if len(self.fleet.sprites()) == 0:
self.ufo_sound.stop()
self.background_sound.stop()
self.alien_speed += 0.2
self.reset(self.alien_speed)
print(len(self.fleet.sprites()))
if self.ufo is not None:
if self.ufo.check_edges():
self.ufo = None
self.ufo_sound.stop()
self.ufo_time = random.randint(15, 30) * 1000
self.ufo_ticks = pygame.time.get_ticks()
else:
self.ufo.update()
else:
if pygame.time.get_ticks() - self.ufo_ticks >= \
self.ufo_time:
self.ufo = UFO(self.director.screen, self.alien_speed * 2)
self.ufo_sound.play(-1)
self.check_explosions()
self.explosions.update()
self.ship.update()
self.check_fleet_edges()
self.check_fleet_bottom()
self.fleet.update()
if len(self.fleet.sprites()) > 0 and \
pygame.time.get_ticks() - self.old_ticks >= \
10000 / self.game_stats.level:
fleet = self.fleet.sprites()
self.fire_bullet(fleet[random.randint(0,
len(fleet) - 1)].rect,
"alien")
self.old_ticks = pygame.time.get_ticks()
self.check_bullets()
self.bullets.update()
if len(self.fleet.sprites()) > 0 and \
self.fleet.sprites()[-1].rect.bottom >= \
self.bunkers.sprites()[0].top_left_triangle_rect.top:
for alien in self.fleet.sprites():
for bunker in self.bunkers.sprites():
if bunker.collide(alien.rect):
self.create_explosion(alien.rect.center)
self.fleet.remove(alien)
self.alein_explosion.play()
if not bunker.standing():
self.bunkers.remove(bunker)
self.game_stats.update()
if self.game_stats.ships == 0:
self.ufo_sound.stop()
self.background_sound.stop()
def render(self):
self.director.screen.fill(self.background)
self.game_stats.render()
for explsion in self.explosions.sprites():
explsion.render()
self.ship.render()
for bullet in self.bullets.sprites():
bullet.render()
for alien in self.fleet.sprites():
alien.render()
for bunker in self.bunkers.sprites():
bunker.render()
if self.ufo is not None:
self.ufo.render()
class MenuScene(Scene):
def __init__(self, director, background=(0, 0, 0)):
super().__init__(director)
self.background = background
text_rect = pygame.Rect(0, 20, 300, 140)
text_rect.centerx = director.screen.get_rect().centerx
self.logo = Text(text_rect, 140, (255, 255, 255), director.screen,
"SPACE")
text_rect.centery += 60
self.header = Text(text_rect, 90, (0, 180, 0), director.screen,
"INVADERS")
self.alien_one = Alien(director.screen)
self.alien_two = Alien(screen=director.screen, alien_type=2)
self.alien_three = Alien(screen=director.screen, alien_type=3)
self.alien_four = Alien(screen=director.screen, alien_type=4)
self.ufo = UFO(director.screen)
self.alien_one.rect.center = self.alien_two.rect.center = \
self.alien_three.rect.center = self.alien_four.rect.center = \
self.ufo.rect.center = director.screen.get_rect().center
self.alien_one.rect.centerx -= self.ufo.rect.width + 20
self.alien_two.rect.centerx -= self.ufo.rect.width + 20
self.alien_three.rect.centerx -= self.ufo.rect.width + 20
self.alien_four.rect.centerx -= self.ufo.rect.width + 20
self.ufo.rect.centerx -= self.ufo.rect.width + 20
self.alien_one.rect.centery -= self.alien_one.rect.height * 2 + 40
self.alien_two.rect.centery -= self.alien_two.rect.height + 20
self.alien_four.rect.centery += self.alien_four.rect.height + 20
self.ufo.rect.centery += self.alien_four.rect.height + \
self.ufo.rect.height + 40
self.score_one = Text(self.alien_one.rect, 30, (150, 150, 150),
director.screen, "= 10")
self.score_two = Text(self.alien_two.rect, 30, (150, 150, 150),
director.screen, "= 20")
self.score_three = Text(self.alien_three.rect, 30, (150, 150, 150),
director.screen, "= 30")
self.score_four = Text(self.alien_four.rect, 30, (150, 150, 150),
director.screen, "= 40")
self.score_five = Text(self.ufo.rect, 30, (150, 150, 150),
director.screen, "= ???")
self.score_one.rect.centerx = self.score_two.rect.centerx = \
self.score_three.rect.centerx = self.score_four.rect.centerx = \
self.score_five.rect.centerx = self.ufo.rect.centerx + \
self.ufo.rect.width + 20
self.score_five.rect.centerx += 8
self.score_one.prep_img()
self.score_two.prep_img()
self.score_three.prep_img()
self.score_four.prep_img()
self.score_five.prep_img()
menu_rect = pygame.Rect(0, 0, 100, 30)
menu_rect.center = director.screen.get_rect().center
menu_rect.y = director.screen.get_rect().bottom - 150
self.play = Text(menu_rect, 50, (255, 255, 255), director.screen,
"PLAY GAME")
menu_rect.y += 60
self.high_score = Text(menu_rect, 50, (255, 255, 255), director.screen,
"HIGH SCORES")
self.mouse_on = None
def mousebuttondown(self, button, point):
self.mouse_on = None
if self.play.rect.collidepoint(point):
self.director.set_scene("game")
elif self.high_score.rect.collidepoint(point):
self.director.set_scene("scores")
def update(self):
point = pygame.mouse.get_pos()
if self.mouse_on is not None:
self.mouse_on.color = (255, 255, 255)
self.mouse_on.prep_img()
self.mouse_on = None
if self.play.rect.collidepoint(point):
self.mouse_on = self.play
elif self.high_score.rect.collidepoint(point):
self.mouse_on = self.high_score
def render(self):
self.director.screen.fill(self.background)
self.logo.render()
self.header.render()
self.alien_one.render()
self.alien_two.render()
self.alien_three.render()
self.alien_four.render()
self.ufo.render()
self.score_one.render()
self.score_two.render()
self.score_three.render()
self.score_four.render()
self.score_five.render()
if self.mouse_on is not None:
self.mouse_on.color = (0, 180, 0)
self.mouse_on.prep_img()
self.play.render()
self.high_score.render()
