python飞机大战敌机爆炸怎么编写？

Question

问题描述

python开发飞机大战时出现以下错误：
Traceback (most recent call last):
File "D:/python/飞机大战.py", line 53, in <module>

main()

File "D:/python/飞机大战.py", line 33, in main

bomb.draw(screen)

AttributeError: 'Bomb' object has no attribute 'draw'

在编程敌机爆炸的时候出现的

相关代码

// 请把代码文本粘贴到下方（请勿用图片代替代码）
import pygame
import sys
from plane_sprites import *
bomb_flag = 0
import time
pygame.init()
pygame.mixer.init()
def main():

SCREEN = (1024,768)
screen = pygame.display.set_mode(SCREEN,0,32)
timg = pygame.image.load("./feiji/timg.png")
enemy_group = pygame.sprite.Group()
hero = Hero()
hero_group = pygame.sprite.Group(hero)
bomb = Bomb()
pygame.time.set_timer(CREAT_ENEMY_EVENT,1000)
pygame.time.set_timer(HERO_FIRE_EVENT,200)
pygame.mixer.music.load("./feiji/bgm.mp3")
#bombs = [Bomb() for _ in range(5)]
while True:
    if pygame.mixer.music.get_busy() == False:
        pygame.mixer.music.play()
    keys_pressed = pygame.key.get_pressed()
    screen.blit(timg,(0,0))
    enemy_group.update()
    enemy_group.draw(screen)
    hero_group.update()
    hero_group.draw(screen)
    hero.bullets.update()
    hero.bullets.draw(screen)
    bomb.update()
    bomb.draw(screen)
    for event in pygame.event.get():
        if event.type == QUIT:
            print("exit")
            exit()
        elif event.type == CREAT_ENEMY_EVENT:
            enemy = Enemy()
            enemy_group.add(enemy)
        elif event.type == HERO_FIRE_EVENT:
            if keys_pressed[pygame.K_SPACE]:
                hero.fire()
    pygame.display.update()
    enemies1 = pygame.sprite.groupcollide(hero.bullets, enemy_group, 1,1)
    enemies = pygame.sprite.spritecollide(hero,enemy_group,1)
    enemies2 = tuple(enemies1)
    if len(enemies) > 0:
        hero.kill()
        exit()
    time.sleep(0.01)   #延时，防卡顿

if __name__=='__main__':

main()

import random

import pygame
from pygame.locals import *
import time
CREAT_ENEMY_EVENT = pygame.USEREVENT
HERO_FIRE_EVENT = pygame.USEREVENT + 1
SCREEN =(1024,768)
class GameSprite(pygame.sprite.Sprite):

def __init__(self,image_name,speed=1):
    super().__init__()
    self.image = pygame.image.load(image_name)
    self.rect = self.image.get_rect()
    self.speed = speed
def update(self):
    self.rect.y += self.speed

class Enemy(GameSprite):

def __init__(self):
    super(Enemy, self).__init__("./feiji/enemy.png")
    self.speed = random.randint(1,4)
    self.rect.bottom = 0
    max_x = 929
    self.rect.x = random.randint(0,max_x)
def update(self):
    super(Enemy, self).update()
    if self.rect.y >= 863:
        self.kill()
def __del__(self):
    pass

class Hero(GameSprite):

def __init__(self):
    super(Hero, self).__init__("./feiji/hero.png",0)
    self.rect.x = 462
    self.rect.y = 610
    self.bullets = pygame.sprite.Group()
def update(self):
    keys_pressed = pygame.key.get_pressed()
    if keys_pressed[pygame.K_RIGHT] or keys_pressed[pygame.K_d]:
        self.rect.x += 5
        if keys_pressed[pygame.K_UP] or keys_pressed[pygame.K_w]:
            self.rect.y -= 5
        elif keys_pressed[pygame.K_DOWN] or keys_pressed[pygame.K_s]:
            self.rect.y += 5
    elif keys_pressed[pygame.K_LEFT] or keys_pressed[pygame.K_a]:
        self.rect.x -= 5
        if keys_pressed[pygame.K_UP] or keys_pressed[pygame.K_w]:
            self.rect.y -= 5
        elif keys_pressed[pygame.K_DOWN] or keys_pressed[pygame.K_s]:
            self.rect.y += 5
    elif keys_pressed[pygame.K_UP] or keys_pressed[pygame.K_w]:
        self.rect.y -= 5
    elif keys_pressed[pygame.K_DOWN] or keys_pressed[pygame.K_s]:
        self.rect.y += 5
    if self.rect.x < -15:
        self.rect.x = -15
    elif self.rect.x > 940:
        self.rect.x = 940
    elif self.rect.y < -20:
        self.rect.y = -20
    elif self.rect.y > 685:
        self.rect.y = 685
def fire(self):
    bullet = Bullet()
    bullet.rect.bottom = self.rect.y + 20
    bullet.rect.x = self.rect.x + 47
    self.bullets.add(bullet)

class Bullet(GameSprite):

def __init__(self):
    super(Bullet, self).__init__("./feiji/bullet.png",-5)
def update(self):
    super(Bullet, self).update()
    if self.rect.bottom < 0:
        self.kill()
def __del__(self):
    pass

class Bomb(GameSprite):

def __init__(self):
    super(Bomb, self).__init__("./feiji/res/boom1.png")
    self.rect .x = 0
    self.rect.y = 0
def update(self):
    super(Bomb,self).update()

你期待的结果是什么？实际看到的错误信息又是什么？