Ejemplo n.º 1
0
def run_game():
    # determine the pygame window position
    x = 100
    y = 45
    os.environ['SDL_VIDEO_WINDOW_POS'] = "%d,%d" % (x, y)

    # Initialize game and create a screen object.
    pygame.init()
    programIcon = pygame.image.load('images/covid_ic.png')
    pygame.display.set_icon(programIcon)
    ai_settings = Settings()
    screen = pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
    pygame.display.set_caption("Corona Epidemic")
    # Make the play button.
    play_button = Button(ai_settings, screen, "Play")
    # Create an instance to store game statistics.
    stats = GameStats(ai_settings)
    sb = Scoreboard(ai_settings, screen, stats)

    # Make a shooter.
    shooter = Shooter(ai_settings, screen)
    # Make a group to store bullets in.
    bullets = Group()
    covids = Group()

    # Create the fleet on covids.
    gf.create_fleet(ai_settings, screen, shooter, covids)


    # Start the main loop for the game.
    while True:
        gf.check_events(ai_settings, screen, stats, sb, play_button, shooter, covids, bullets)

        if stats.game_active:
            shooter.update()
            gf.update_bullets(ai_settings, screen, stats, sb, shooter, covids, bullets)
            gf.update_covids(ai_settings, screen, stats, sb, shooter, covids, bullets)

        gf.update_screen(ai_settings, screen, stats, sb, shooter, covids, bullets, play_button)
Ejemplo n.º 2
0
def run_game():
    pygame.init()
    target_settings = Settings()
    screen = pygame.display.set_mode(
        (target_settings.screen_width, target_settings.screen_height))
    pygame.display.set_caption("Shoot The Box")

    play_button = Button(target_settings, screen, "Start")
    stats = GameStats(target_settings)
    sb = Scoreboard(target_settings, screen, stats)
    shooter = Shooter(target_settings, screen)
    target = Target(target_settings, screen)
    bullets = Group()
    while True:
        gf.check_events(target_settings, stats, screen, sb, shooter, target,
                        bullets, play_button)
        if stats.game_active:
            shooter.update()
            gf.update_bullets(target_settings, stats, screen, sb, shooter,
                              target, bullets)
            gf.update_target(target_settings, target)
        gf.update_screen(target_settings, stats, screen, sb, shooter, target,
                         bullets, play_button)
Ejemplo n.º 3
0
def run_game():
    pygame.init()
    sideway_shooter = Settings()
    screen = pygame.display.set_mode((
        sideway_shooter.width, sideway_shooter.height))
    pygame.display.set_caption("__Hjira__")
    shooter = Shooter(screen)
    bullets = Group()
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_UP:
                    shooter.moving_up = True
                if event.key == pygame.K_DOWN:
                    shooter.moving_down = True
                elif event.key == pygame.K_SPACE:
                    new_bullet = Bullet(screen, sideway_shooter, shooter)
                    bullets.add(new_bullet)
            elif event.type == pygame.KEYUP:
                if event.key == pygame.K_UP:
                    shooter.moving_up = False
                if event.key == pygame.K_DOWN:
                    shooter.moving_down = False
        shooter.update()
        screen.fill(sideway_shooter.bg_color)
        shooter.belitme()
        bullets.update()
        for bullet in bullets.sprites():
            bullet.draw_bullet()
        for bullet in bullets.copy():
            if bullet.rect.top <= 0:
                bullets.remove(bullet)
        print(len(bullets))
        pygame.display.flip()
Ejemplo n.º 4
0
# All the non player character sprites
npcGroups = [laserGroup, centipede, mushroomGroup]

while 1:
    for event in pygame.event.get():
        if event.type == pygame.QUIT: sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_SPACE:
                newLaser = shooter.shoot()
                laserGroup.add(newLaser)
                allSpriteGroup.add(newLaser)

    pressedKeys = pygame.key.get_pressed()

    shooter.update(pressedKeys)

    # Move everything in the game (referring to the underlying positions of game objects)
    for gameSprite in list(itertools.chain(npcGroups)):
        gameSprite.update()

    screen.fill(black)

    # Draw all the game objects on the screen in their new positions
    for gameSprite in allSpriteGroup:
        screen.blit(gameSprite.image, gameSprite.rect)

    # Deal with centipede segments that were shot
    collisions = pygame.sprite.groupcollide(laserGroup, centipede, True, False)
    segmentsHit = []
    for laser in collisions:
Ejemplo n.º 5
0
class Frobo(wpilib.IterativeRobot):
    """Control code for Frobo, the 2013 Competition Robot of FRC Team 2403 (Plasma Robotics)"""
    def robotInit(self):
        """Initialization method for the Frobo class.  Initializes objects needed elsewhere throughout the code."""

        # Initialize Joystick
        self.controller = Joystick(Values.CONTROLLER_ID)

        # Initialize Drive Sub-System
        self.drive = FroboDrive(self, Values.DRIVE_LEFT_MAIN_ID,
                                Values.DRIVE_LEFT_SLAVE_ID,
                                Values.DRIVE_RIGHT_MAIN_ID,
                                Values.DRIVE_RIGHT_SLAVE_ID)

        # Initialize Shooter Sub-System
        self.compressor = wpilib.Compressor()
        self.shooter = Shooter(self, Values.SHOOT_FRONT_ID,
                               Values.SHOOT_BACK_ID,
                               Values.SHOOT_SOLENOID_FORWARD_CHANNEL_ID,
                               Values.SHOOT_SOLENOID_REVERSE_CHANNEL_ID)

    def robotPeriodic(self):
        pass

    # DISABLED MODE

    def disabledInit(self):
        """Method ran when Frobo first enters the *disabled* mode."""
        self.shooter.disable()

    def disabledPeriodic(self):
        """Method that runs while Frobo is in the *disabled* mode."""
        pass

    # AUTONOMOUS MODE

    def autonomousInit(self):
        """Method ran when Frobo first enters the *autonomous* mode."""
        pass

    def autonomousPeriodic(self):
        """Method that runs while Frobo is in the *autonomous* mode."""
        pass

    # TELEOP MODE

    def teleopInit(self):
        """Method ran when Frobo first enters the *teleop* mode."""
        self.shooter.disable()

    def teleopPeriodic(self):
        """Method that runs while Frobo is in the *teleop* mode."""
        self.drive.fps(power_axis=self.controller.LEFTY,
                       turn_axis=self.controller.RIGHTX)
        self.shooter.update(self.controller)

    # TEST MODE

    def testInit(self):
        """Method ran when Frobo first enters the *test* mode."""
        self.shooter.disable()

    def testPeriodic(self):
        """Method that runs while Frobo is in the *test* mode."""
        self.shooter.update(self.controller)
class SidewaysShooter:

    def __init__(self):
        """Initialize the game and create game resources."""
        pygame.init()
        self.settings = Settings()
        self.screen = pygame.display.set_mode((self.settings.screen_width,self.settings.screen_height))
        pygame.display.set_caption("Sideways Shooter")

        # Create an instance to store game statistics, and create a scoreboard.
        self.stats = GameStats(self)
        self.sb = Scoreboard(self)
        self.shooter = Shooter(self)
        self.lines = pygame.sprite.Group()
        self.bullets = pygame.sprite.Group()
        self.bulletbs = pygame.sprite.Group()
        self.balls = pygame.sprite.Group()
        self.ball2s = pygame.sprite.Group()

        self._create_fleet()
        self._create_fleet2()

        # Make the play button.
        self.play_button = PlayButton(self, "Right wheel to play")

        # Make the Settings button.
        self.settings_button = SettingsButton(self, "Settings")

        # Make the setttings menu.
        self.settings_menu = SettingsMenu(self, "fast or slow press y or n")

        # Make the speed button.
        self.speed_button = SpeedButton(self, "you have selected the fast option")

        # Make the second speed button.
        self.speed_button2 = SpeedButton2(self, "You have selected the slower options")
        
    def run_game(self):
        """Start the main game loop."""
        Running, Pause = 0, 1
        state = Running
        while True:
            self._check_events()
            if self.stats.game_active:
                self._check_events()
                self.shooter.update()
                self._update_bullets()
                self._update_shooter()
                self.check_if_empty()
                

                        
            self._update_screen()

    def _check_events(self):
        LEFT = 1
        MIDDLE = 2
        RIGHT = 3
        """Respond to keypresses and mouse events."""
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            elif event.type == pygame.KEYDOWN:
                self._check_keydown_events(event)
            
            elif event.type == pygame.KEYUP:
                self._check_keyup_events(event)

            elif event.type == pygame.MOUSEBUTTONDOWN and event.button == LEFT:
                #mouse_pos2 = pygame.mouse.get_pos()
                #self._check_play_button(mouse_pos2)
                #None
                self._fire_bullet()

            elif event.type == pygame.MOUSEBUTTONDOWN and event.button == MIDDLE:
                mouse_pos = pygame.mouse.get_pos()
                self._check_play_button(mouse_pos)
                #pause
                
                #self._check_settings_button(mouse_pos)

            #elif event.type == pygame.MOUSEBUTTONDOWN:
                mouse_pos2 = pygame.mouse.get_pos()
                self.settings_button.flag = True
                #self._check_settings_button(mouse_pos2)
                
            elif event.type == pygame.MOUSEBUTTONDOWN and event.button == RIGHT:
                #mouse_pos = pygame.mouse.get_pos()
                #self._check_play_button(mouse_pos) 
                self._fire_bulletb()
                
    def _check_play_button(self, mouse_pos):
        """Start a new game when the player clicks Play."""
        button_clicked = self.play_button.rect.collidepoint(mouse_pos)
        
        if button_clicked and not self.stats.game_active:
            # Reset the game statistics.
            self.stats.reset_stats()
            self.stats.game_active = True
            self.sb.prep_score()
            self.sb.prep_shooters()

            # Get rid of any remaining balss and aliens
            self.balls.empty()
            self.ball2s.empty()
            self.bullets.empty()
            self.bulletbs.empty()
            self.lines.empty()
            self.shooter3()

            # Create a new fleet.
            self._create_fleet()
            self._create_fleet2()

            # Hide the mouse cursor.
            pygame.mouse.set_visible(False)
        

    def _check_settings_button(self, mouse_pos2):
        """load the settings when the player clicks settings"""
        if self.settings_button.rect.collidepoint(mouse_pos2):
            #self.settings_button.flag = True
            #self.settings_menu.check_image()
            self.settings_menu.draw_button()

    
        
                        
    def _check_keydown_events(self, event):
        """Respond to keypresses."""
        if event.key == pygame.K_x:
            self.shooter.moving_right = True
        elif event.key == pygame.K_c:
            self.shooter.moving_left = True
        elif event.key == pygame.K_SPACE:
            self._fire_line()
        elif event.key == pygame.K_RIGHT:
            self.settings_button.flag = True
            #self.speed_button.draw_button()
        elif event.key == pygame.K_LEFT:
            self.settings_button.flag = False
            self.settings_menu.draw_button()
            pygame.mouse.set_visible(True)
        elif event.key == pygame.K_y:
            self.speed_button.flag2 = True
            while self.speed_button.flag2 == True:
                self.speed_button2.flag3 = False
                break
            self.settings.shooter_speed2 = 0.09
        elif event.key == pygame.K_n:
            self.speed_button2.flag3 = True
            while self.speed_button2.flag3 == True:
                self.speed_button.flag2 = False
                break
            self.settings.shooter_speed2 = 0.01
        elif event.key == pygame.K_p:
            self.stats.game_active = False
            pygame.mouse.set_visible(True)
            self.settings_button.flag = False
            #self.settings_button()
            self.balls.empty()
            self.ball2s.empty()
            self.bullets.empty()
            self.bulletbs.empty()
            self.lines.empty()
            self.shooter3()
            self._create_fleet()
            self._create_fleet2()
        elif event.key == pygame.K_q:
            pygame.mouse.set_visible(True)
            sys.exit()

    def shooter3(self):
        self.shooter = Shooter(self)

    def check_if_empty(self):
        if len(self.balls) == 0 and len(self.ball2s) == 0:
            pass

    def _check_keyup_events(self, event):
        """Respond to key releases."""
        if event.key == pygame.K_x:
            self.shooter.moving_right = False
        elif event.key == pygame.K_c:
            self.shooter.moving_left = False

    def _fire_bullet(self):
        """Create a new bullet and add it to the group."""
        if len(self.bullets) < self.settings.bullets_allowed:
            new_bullet = Bullet(self)
            self.bullets.add(new_bullet)

    def _fire_bulletb(self):
        """Create a new bullet and add it to the group."""
        if len(self.bulletbs) < self.settings.bulletbs_allowed:
            new_bulletb = Bulletb(self)
            self.bulletbs.add(new_bulletb)

    def _update_bullets(self):
        """Update position of bullerts and get rid of old bullets."""
        # Update bullet positions
        self.bullets.update()
        self.bulletbs.update()
        self.lines.update()

        # Get rid of bullets that have disappeared.
        for bullet in self.bullets.copy():
            if bullet.rect.right >= self.settings.screen_width:
                self.bullets.remove(bullet)

        for bulletb in self.bulletbs.copy():
            if bulletb.rect.right >= self.settings.screen_width:
                self.bulletbs.remove(bulletb)

        self._check_bullet_ball_collisions()
        
    def _check_bullet_ball_collisions(self):
        """Respond to bullet-ball collisions."""
        # Remove any bullets and balls that have collided.
        # Check for any bullets that have hit any balls
        #  If so, get rid of the bullets and the ball
        collisions = pygame.sprite.groupcollide(self.bullets, self.balls, True, True)
        collisions2 = pygame.sprite.groupcollide(self.bulletbs, self.ball2s, True, True)
        collisions3 = pygame.sprite.groupcollide(self.lines, self.balls, True, True)
        collisions4 = pygame.sprite.groupcollide(self.lines, self.ball2s, True, True)

        if collisions3 or collisions4 == True:
            self._shooter_hit()

        if collisions:
            for balls in collisions.values():
                self.stats.score += self.settings.ball_points * len(balls)
            self.sb.prep_score()
            self.sb.check_high_score()
            
        if collisions2:
            for ball2s in collisions2.values():
                self.stats.score += self.settings.ball_points2 * len(ball2s)
            self.sb.prep_score()
            self.sb.check_high_score()

            
    def _update_shooter(self):
        """Update the position of the shooter."""
        self.shooter.update()

        # Look for ball-shooter collisions.
        if pygame.sprite.spritecollideany(self.shooter, self.balls):
            self._shooter_hit()

        if pygame.sprite.spritecollideany(self.shooter, self.ball2s):
            self._shooter_hit()

    
    def _shooter_hit(self):
        """Respond to the shooter being hit."""
        if self.stats.shooters_left > 0:
            # Decrement ships_left, and update scoreboard.
            self.stats.shooters_left -= 1
            self.sb.prep_shooters()

            # Get rid of any remaining balls and bullets.
            self.balls.empty()
            self.ball2s.empty()
            self.bullets.empty()
            self.bulletbs.empty()
            self.lines.empty()

            # Create a new fleet
            self.shooter3()
            self._create_fleet()
            self._create_fleet2()

            # Pause.
            sleep(0.5)
        else:
            self.stats.game_active = False
            pygame.mouse.set_visible(True)
                
    def _create_fleet(self):
        """Create the fleet of balls."""
        # Create a ball and find the number of balls in one row.
        # Spacing between ball is equal to one balls width.
        ball = Ball(self)
        ball_width = ball.rect.height
        ball_width, ball_height = ball.rect.size
        available_space_x = self.settings.screen_width 
        number_balls_x = available_space_x // (6 * ball_width)
 
        # Determine the number of rows of aliens that fit on the screen.
        ship_height = self.shooter.rect.height
        available_space_y = self.settings.screen_height 
        number_rows = available_space_y // (2 * ball_height)
        
        # Create the first fleet of aliens.
        for row_number in range(number_rows):
            for ball_number in range(number_balls_x):
                # Create a ball and place it in the row.
                ball = Ball(self)
                ball_width, ball_height = ball.rect.size
                ball.y = 2 * ball_width + (5 * ball_width * ball_number) 
                ball.rect.y = ball.y
                ball.rect.x =  19 *  ball_width  + (2 * ball_width * row_number) 
                self.balls.add(ball)

    def _create_fleet2(self):
        """Create the fleet of ball2s."""
        # Create a yellow ball and find the number of balls in a row.
        # Spacing between each ball is equal to one ball width.
        ball2 = Ball2(self)
        ball_width2 = ball2.rect.height
        ball_width2, ball_height2  = ball2.rect.size
        available_space_x2 = self.settings.screen_width
        number_ball2s_x = available_space_x2 // (6 * ball_width2)

        # Determine the number of balls that fit on the screen
        shooter_height = self.shooter.rect.height
        available_space_y2 = self.settings.screen_width
        number_rows2 = available_space_y2 // (2 * ball_height2)

        # Create the first fleet of balls.
        for row_number2 in range(number_rows2):
            for ball2_number in range(number_ball2s_x):
                # Create a ball and place it in the row.
                ball2 = Ball2(self)
                ball_width2, ball_height2 = ball2.rect.size
                ball2.y =  5 * ball_width2 * ball2_number
                ball2.rect.y = ball2.y
                ball2.rect.x =  19 * ball_width2 + (2 * ball_width2 * row_number2)
                self.ball2s.add(ball2)

    def _fire_line(self):
        """Create a new line and add it to the lines group."""
        for i in range(1):
            new_line = Line(self)
            self.lines.add(new_line)

    def _update_screen(self):
        """Update images on the screen, and flip to the new screen."""
         # Draw the play button if the game is inactive.
        #if not self.stats.game_active:
            #self.play_button.draw_button()
            
        self.screen.fill(self.settings.bg_color)
        self.shooter.blitme()
        #self._fire_line()
        
        for bullet in self.bullets.sprites():
            bullet.draw_bullet()
            

        for bulletb in self.bulletbs.sprites():
            bulletb.draw_bulletb()

        for line in self.lines.sprites():
            #self._fire_line()
            line.draw_line()
            
            
        self.balls.draw(self.screen)
        self.ball2s.draw(self.screen)

        # Draw the score information.
        self.sb.show_score()

        # Draw the play button if the game is inactive.
        if not self.stats.game_active:
            self.play_button.draw_button()

        # Draw the settings if the game is inactive.
        if not self.stats.game_active:
            self.settings_button.draw_button()

        if self.settings_button.flag == True and not self.stats.game_active:
            #self.settings_menu.check_image()
            self.settings_menu.draw_button()

        if self.speed_button.flag2 == True and not self.stats.game_active:
            self.speed_button2.flag3 = False
            self.speed_button.draw_button3()
            
            

        if self.speed_button2.flag3 == True and not self.stats.game_active:
            self.speed_button.flag2 = False
            self.speed_button2.draw_button4()
            
            

        #self.speed_button2.flag3 = False
        #self.speed_button.flag2 = False
            
        pygame.display.flip()
Ejemplo n.º 7
0
class SpaceShooter:
    '''The main class that controls all assets and behaviour of the game'''
    def __init__(self):
        # Setting up the screen
        pygame.init()
        self.settings = Settings()
        self.screen = pygame.display.set_mode(
            (self.settings.screen_width, self.settings.screen_height))
        pygame.display.set_caption('SpaceShooter')

        self.stats = Stats(self)
        self.space_bg = Space(self)
        self.shooter = Shooter(self)
        # Create a list that will store the lasers
        self.lasers = pygame.sprite.Group()
        self.spaceships = pygame.sprite.Group()
        self.display_shooters = pygame.sprite.Group()

        self._create_fleet()
        self._display_shooters()

        self.button = Button(self, 'Play')
        self.quitbutton = QuitButton(self, 'Quit')

        self.sb = Scoreboard(self)

    def run_game(self):

        while True:
            self._check_events()

            if self.stats.game_active:

                self.shooter.update()
                self._update_lasers()
                self._update_spaceships()

            self._screen_updates()

    def _check_events(self):
        # Pressing certain key types
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()

            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_UP:
                    self.shooter.moving_up = True
                if event.key == pygame.K_DOWN:
                    self.shooter.moving_down = True
                if event.key == pygame.K_q:
                    sys.exit()
                if event.key == pygame.K_SPACE:
                    self._fire_laser()

            elif event.type == pygame.KEYUP:
                self.shooter.moving_up = False
                self.shooter.moving_down = False

            elif event.type == pygame.MOUSEBUTTONDOWN:
                mouse_pos = pygame.mouse.get_pos()
                self._check_play_button(mouse_pos)
                self._check_quit_button(mouse_pos)

    def _check_play_button(self, mouse_pos):
        '''Start a new game when the player clicks play'''
        button_clicked = self.button.rect.collidepoint(mouse_pos)
        if button_clicked and not self.stats.game_active:
            # Reset the game settings
            self.settings.initialise_dynamic_settings()
            # Reset the whole game so it starts from the beginning
            self.stats.reset_stats()
            self._display_shooters()
            self.stats.game_active = True
            self.sb.prep_score()

            self.spaceships.empty()
            self.lasers.empty()

            self._create_fleet()
            self.shooter.center_shooter()

            # Hide the mouse cursor
            pygame.mouse.set_visible(False)

    def _check_quit_button(self, mouse_pos):
        '''Quit the quit when the quit button is clicked'''
        quit_button_clicked = self.quitbutton.rect.collidepoint(mouse_pos)
        if quit_button_clicked and not self.stats.game_active and self.stats.shooter_left == 0:
            sys.exit()

    def _fire_laser(self):
        '''Create a new laser and add it to the group'''
        if len(self.lasers) < self.settings.laser_allowed:
            new_laser = Laser(self)
            self.lasers.add(new_laser)

    def _update_lasers(self):
        self.lasers.update()

        # Get rid of bullets that have disappeared
        for laser in self.lasers.copy():
            if laser.rect.left >= self.settings.screen_width:
                self.lasers.remove(laser)

        self._check_lasers_spaceships_collisions()

    def _check_lasers_spaceships_collisions(self):
        '''Respond to laser spaceship collisions'''
        #Check for collisions between lasers and spaceship
        # Destroy the spaceship
        collisions = pygame.sprite.groupcollide(self.lasers, self.spaceships,
                                                False, True)

        if collisions:
            for spaceships in collisions.values():
                self.stats.score += self.settings.spaceship_points * len(
                    spaceships)
            self.sb.prep_score()

        # Add a new fleet of spaceships when they dissapear
        if not self.spaceships:
            self.lasers.empty()
            self._create_fleet()
            self.settings.increase_speed()

    def _create_fleet(self):
        '''Create a fleet of spaceship'''
        spaceship = Spaceship(self)
        spaceship_height, spaceship_width = spaceship.rect.size
        # Number of spaceships that fit on the screen vertically
        shooter_width = self.shooter.rect.width
        available_space_y = self.settings.screen_height - (2 *
                                                           spaceship_height)
        number_spaceship_y = available_space_y // (1 * spaceship_height)

        # Number of spaceships that fit on the screen horizontally
        available_space_x = (self.settings.screen_width -
                             (3 * spaceship_width) - (shooter_width))
        number_columns = available_space_x // (3 * spaceship_width)

        for number_column in range(number_columns):
            for number_spaceship in range(number_spaceship_y):
                self._create_spaceship(number_spaceship, number_column)

    def _create_spaceship(self, number_spaceship, number_column):
        # Creatings spaceship and setting the position
        spaceship = Spaceship(self)
        spaceship_width, spaceship_height = spaceship.rect.size

        spaceship.y = spaceship_height + (2 * spaceship_height *
                                          number_spaceship)
        spaceship.rect.y = spaceship.y

        spaceship.x = (self.settings.screen_width -
                       (2 * spaceship_width +
                        (2 * spaceship_width * number_column)))
        spaceship.rect.x = spaceship.x

        self.spaceships.add(spaceship)

    def _display_shooters(self):
        display_shooter = ShooterDisplay(self)
        display_shooter_width = display_shooter.rect.width

        for shooter_number in range(self.stats.shooter_left):
            display_shooter = ShooterDisplay(self)
            display_shooter.rect.x = self.settings.screen_width - (
                display_shooter_width * shooter_number) - display_shooter_width
            display_shooter.rect.y = display_shooter.rect.height / 2
            self.display_shooters.add(display_shooter)

    def _remove_display_shooters(self):

        for display_shooter in self.display_shooters.copy():
            if len(self.display_shooters) > self.stats.shooter_left:
                self.display_shooters.remove(display_shooter)

    def _update_spaceships(self):
        '''Update the position of the fleet of spaceships'''
        self._check_fleet_edges()
        self.spaceships.update()

        # Collision between the shooter and spaceships
        if pygame.sprite.spritecollideany(self.shooter, self.spaceships):
            self._shooter_hit()

        self._check_spaceships_bottom()

    def _check_fleet_edges(self):
        '''Respond appropriately when spaceship reaches the edges'''
        for spaceship in self.spaceships.sprites():
            if spaceship.check_edges():
                self._change_fleet_direction()
                break

    def _change_fleet_direction(self):
        '''Move the fleet left and then move it down'''
        for spaceship in self.spaceships.sprites():
            spaceship.rect.x -= self.settings.spaceship_dropspeed
        self.settings.spaceship_direction *= -1

    def _screen_updates(self):
        # Updating the screen
        self.space_bg.blitme()
        self.shooter.blitme()

        for laser in self.lasers.sprites():
            laser.draw_laser()

        self.spaceships.draw(self.screen)
        self.display_shooters.draw(self.screen)

        self.sb.show_score()

        if not self.stats.game_active:
            self.button.draw_msg()
            if self.stats.shooter_left == 0:
                self.quitbutton.draw_msg()

        pygame.display.flip()

    def _shooter_hit(self):
        '''Respond to the shooter being hit by a spaceship'''

        if self.stats.shooter_left > 0:
            # Decrement shooter left
            self.stats.shooter_left -= 1
            # Get rid of any remaining lasers and spaceships
            self._remove_display_shooters()

            self.spaceships.empty()
            self.lasers.empty()

            # Create a new fleet and center the shooter
            self._create_fleet()
            self.shooter.center_shooter()

            # Pause the game to see the collision
            sleep(0.5)

        else:
            self.stats.game_active = False

            pygame.mouse.set_visible(True)

    def _check_spaceships_bottom(self):
        '''Check to see if the spaceships have reached 
		   the left side of the screen'''

        screen_rect = self.screen.get_rect()
        for spaceship in self.spaceships.sprites():
            if spaceship.rect.left <= screen_rect.left:
                self._shooter_hit()
                break