Python Pygame在屏幕上添加外星人时飞船移动缓慢

问题描述 投票:0回答:1

我正在尝试写关于外星人射击的pygame,

第一部分,我添加了飞船和子弹,效果很好,然后我做了第二部分,将外星人添加到屏幕上,但是有些问题

在屏幕上添加外星人之前,一切正常,但是当我将alien.py导入脚本时,飞船的移动速度非常缓慢,几乎无法移动,是什么原因造成的?

在书中使用aliens.draw(screen),而我使用for alien in aliens.sprites: setting.screen.blit(alien.alien,alien.alien_rect)

这两个命令有什么区别?是否会导致船舶缓慢移动???

这里是代码

bullet.py

#!/usr/bin/python
import sys
import pygame 

class Bullet(pygame.sprite.Sprite):
    def __init__(self,setting,char):
        super().__init__()
        pic=pygame.image.load("../image/bullet.jpg").convert_alpha()
        self.mellon=pygame.transform.smoothscale(pic,(30,80))
        self.rect=self.mellon.get_rect()
#        self.rect=pygame.Rect(0,0,setting.bullet_w,setting.bullet_h)
        self.rect.centerx=char.ship_rect.centerx
        self.rect.top=char.ship_rect.top
        self.color=setting.bullet_c
        self.speed=setting.bullet_s
        self.y=float(self.rect.centery)
    def move_bullet(self):
        self.y -= self.speed
        self.rect.y= self.y
    def draw_bullet(self,setting):
        setting.screen.blit(self.mellon,self.rect)
        #pygame.draw.rect(setting.screen,self.color,self.rect)
    def blit_bullet(self,bullets,setting):
        for bullet in bullets.sprites():
             setting.screen.blit(bullet.mellon,bullet.rect)
             #pygame.draw.rect(setting.screen,bullet.color,bullet.rect)
             bullet.y -= bullet.speed
             bullet.rect.y=bullet.y
        for bullet in bullets:
            if bullet.rect.y <= 10:
                bullets.remove(bullet)

ship.py

#!/usr/bin/python
import sys
import pygame

class Ship():
    def __init__(self,screen,setting):
        bk=pygame.image.load("../image/muha.png").convert()
        self.bkg=pygame.transform.smoothscale(bk,(setting.w,setting.h))
        temp=pygame.image.load("../image/title.jpg").convert_alpha()
        self.ship=pygame.transform.smoothscale(temp,(200,200))
        self.screen=screen
        self.screen_rect=screen.get_rect()
        self.ship_rect=self.ship.get_rect()



        self.ship_rect.center=self.screen_rect.center
        self.ship_rect.bottom=self.screen_rect.bottom

        self.x=float(self.ship_rect.centerx)
        self.y=float(self.ship_rect.centery)

    def blit_screen(self):
        self.screen.blit(self.bkg,(0,0))
    def blit_ship(self):
        self.screen.blit(self.ship,self.ship_rect)

function.py

#!/usr/bin/python
import sys
import pygame
from bullet import Bullet
class Function():
     def __init__(self):
        self.moving_up   = False
        self.moving_down = False
        self.moving_left = False
        self.moving_right = False
     def event(self,bullets,setting,ship):      
         for event in pygame.event.get():
             if event.type == pygame.QUIT:
                 sys.exit()
             elif event.type == pygame.KEYDOWN:
                 if event.key ==pygame.K_z:
                     if len(bullets) < setting.bullet_n:
                        bullets.add(Bullet(setting,ship))
                 elif event.key == pygame.K_UP:
                     self.moving_up=True
                 elif event.key == pygame.K_DOWN:
                     self.moving_down=True
                 elif event.key == pygame.K_LEFT:
                     self.moving_left=True
                 elif event.key == pygame.K_RIGHT:
                     self.moving_right=True
                 elif event.key == pygame.K_ESCAPE:
                        sys.exit()

             elif event.type == pygame.KEYUP:
                 if event.key == pygame.K_UP:
                     self.moving_up=False
                 elif event.key == pygame.K_DOWN:
                     self.moving_down=False
                 elif event.key == pygame.K_LEFT:
                     self.moving_left=False
                 elif event.key == pygame.K_RIGHT:
                     self.moving_right=False

     def move(self,setting,ship):

         if self.moving_up == True and ship.ship_rect.top >= 0:
            ship.y -= setting.speed
         if self.moving_down == True and ship.ship_rect.bottom <= setting.h:
             ship.y += setting.speed
         if self.moving_left == True and ship.ship_rect.left >= 0:
             ship.x -= setting.speed
         if self.moving_right == True and ship.ship_rect.right <= setting.w:
             ship.x += setting.speed
         ship.ship_rect.centerx=ship.x
         ship.ship_rect.centery=ship.y

alien.py

#!/usr/bin/python
import sys
import pygame as p
class Alien(p.sprite.Sprite):
    def __init__(self):
        super().__init__()
        pic=p.image.load("../image/ship.jpg").convert_alpha()
        self.alien=p.transform.smoothscale(pic,(100,100))
        self.alien_rect=self.alien.get_rect()
        self.alien_rect.x=(self.alien_rect.width)
        self.y = float(self.alien_rect.y)
    def create(self,setting,aliens):
        space=setting.w-(self.alien_rect.x)*2
        alien_number=int(space/(2*(self.alien_rect.width)))
        for number in range(alien_number):
            alien=Alien()
            alien.alien_rect.x=self.alien_rect.x+2*self.alien_rect.width*number
            aliens.add(alien)
    def move(self,setting):
        self.y += setting.alien_speed2
        self.alien_rect.y = self.y
    def blit(self,setting,aliens):
        for alien in aliens.sprites():
            setting.screen.blit(alien.alien,alien.alien_rect)

主脚本

#!/usr/bin/python
import sys,os
import pygame 
from bullet     import Bullet
from ship       import Ship
from function   import Function
from alien      import Alien

class Setting():
    def __init__(self,width,height):
        self.w=width
        self.h=height
        self.flag=pygame.RESIZABLE
        self.color=(255,255,255)
        self.speed=1.5
        self.screen=pygame.display.set_mode((self.w,self.h),self.flag)
        pygame.display.set_caption("Muhaha")
        self.bullet_s=1.5
        self.bullet_w=5
        self.bullet_h=20
        self.bullet_n=10
        self.bullet_c=(0,0,0)
        self.alien_speed=1.5

def game():
    pygame.init()
    setting=Setting(1200,800)
    ship=Ship(setting.screen,setting)
    function=Function()
    bullet=Bullet(setting,ship)
    bullets=pygame.sprite.Group()
    alien=Alien()
    aliens=pygame.sprite.Group()         

    while True:
        function.event(bullets,setting,ship)

        ship.blit_screen()
        function.event(bullets,setting,ship)
        function.move(setting,ship)
        bullet.blit_bullet(bullets,setting)
        ship.blit_ship()
        alien.create(setting,aliens)
        alien.blit(setting,aliens)
        pygame.display.flip()
game()

[我正在尝试编写有关射击外星人的pygame,第一部分我添加了飞船和子弹,效果很好,然后我做了第二部分,将外星人添加到了屏幕上,但是之前有一些问题...] >

python pygame
1个回答
0
投票

game()功能内,您调用alien.create(setting,aliens)每帧。

1000帧后,您将拥有1000个外来精灵。

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