Question

这是代码，请详细说明帮助。我需要知道如何设置射击子弹的限制。如果你能告诉我如何使用我的代码来做这件事，那就太好了。我包括玩家类，子弹类，主循环和射击机械。

# This class represents the Player        
class Player(pygame.sprite.Sprite):
    def __init__(self):
        # Call the parent class (Sprite) constructor

        pygame.sprite.Sprite.__init__(self) 

        self.image = pygame.Surface([20,20])
        self.image.fill(red)

        self.rect = self.image.get_rect()


# This class represents the bullet        
class Bullet(pygame.sprite.Sprite):

    def __init__(self):
        # Call the parent class (Sprite) constructor
        pygame.sprite.Sprite.__init__(self) 

        self.image = pygame.Surface([10, 4])
        self.image.fill(black)

        self.rect = self.image.get_rect()


class Shoot(pygame.sprite.Sprite):

    def __init__(self):
        # Call the parent class (Sprite) constructor
        pygame.sprite.Sprite.__init__(self) 

        self.image = pygame.Surface([10, 4])
        self.image.fill(black)

        self.rect = self.image.get_rect()


# Initialize Pygame
pygame.init()

# Set the height and width of the screen
screen_width=700
screen_height=400
screen=pygame.display.set_mode([screen_width,screen_height])

# This is a list of every sprite. All blocks and the player block as well.
all_sprites_list = pygame.sprite.Group()


# List of each bullet
bullet_list = pygame.sprite.Group()

shoot_list = pygame.sprite.Group()

# Create a red player block
player = Player()
all_sprites_list.add(player)

#Loop until the user clicks the close button.
done=False

# Used to manage how fast the screen updates
clock=pygame.time.Clock()

score = 0
player.rect.y=370


bullet_count=0




# -------- Main Program Loop -----------
while done==False:
    # ALL EVENT PROCESSING SHOULD GO BELOW THIS COMMENT
    for event in pygame.event.get(): # User did something
        if event.type == pygame.QUIT: # If user clicked close
            done=True # Flag that we are done so we exit this loop
        if event.type == KEYDOWN:

            if event.key == K_LEFT:  
                bullet = Bullet()
                bullet.rect.x = player.rect.x
                bullet.rect.y = player.rect.y
                all_sprites_list.add(bullet)
                bullet_list.add(bullet)



            if event.key == K_RIGHT:  
                shoot = Shoot()
                shoot.rect.x = player.rect.x
                shoot.rect.y = player.rect.y
                all_sprites_list.add(shoot)
                shoot_list.add(shoot)                        


    # ALL EVENT PROCESSING SHOULD GO ABOVE THIS COMMENT

    # ALL GAME LOGIC SHOULD GO BELOW THIS COMMENT

    # Calculate mechanics for each bullet

    bulletCounter = 0

    for bullet in bullet_list:
        bullet.rect.x -= 5


    for shoot in shoot_list:
        shoot.rect.x -= -5

        # Remove the bullet if it flies up off the screen
        if bullet.rect.y < -10:
            bullet_list.remove(bullet)
            all_sprites_list.remove(bullet)

    # Get the current mouse position. This returns the position
    # as a list of two numbers.
    pos = pygame.mouse.get_pos()

    # Set the player x position to the mouse x position
    player.rect.x=pos[0]

    # ALL GAME LOGIC SHOULD GO ABOVE THIS COMMENT

    # ALL CODE TO DRAW SHOULD GO BELOW THIS COMMENT

    # Clear the screen
    screen.fill(white)

    # Draw all the spites
    all_sprites_list.draw(screen)

    # ALL CODE TO DRAW SHOULD GO ABOVE THIS COMMENT

    # Limit to 20 frames per second
    clock.tick(20)

    # Go ahead and update the screen with what we've drawn.
    pygame.display.flip()

pygame.quit()

Answer 1

您可以创建一个将子弹计数作为属性的枪类，并且射击将是该类的函数。

class Gun(object):
   def __init__(self):
      self.bullet_count = 5

   def __shoot(self, bullet_sprite, bullet_list):
      if self.bullet_count > 0:
         self.bullet_count -= 1
         bullet_sprite.rect.x = player.rect.x
         bullet_sprite.rect.y = player.rect.y
         all_sprites_list.add(bullet_sprite)
         bullet_list.add(bullet_sprite)           

   def shoot_left(self, bullet_list):
       self.__shoot(Bullet(), bullet_list)

   def shoot_right(self, bullet_list):
       self.__shoot(Shoot(), bullet_list)

-------------------------------------------------------

然后，在您输入while循环之前，您将创建一个枪类的实例并按如下方式使用它：

if event.type == pygame.KEYDOWN and gun.bullet_count > 0:
    print "KEY DOWN"

    if event.key == K_LEFT:  
       gun.shoot_left(bullet_list)

    if event.key == K_RIGHT:  
       gun.shoot_right(shoot_list)

如何限制射击子弹

1 个答案: