背景和飞机同时向下移动

#coding:utf-8
import pygame,sys,easygui
from pygame.locals import *
#初始化pygame环境
pygame.init()

#创建一个长宽分别为480/650窗口
canvas = pygame.display.set_mode((480, 650))
canvas.fill((255,255,255))

#设置窗口标题
pygame.display.set_caption("飞机大战")


#加载图片

enemy=pygame.image.load("images/enemy1.png")
bg=pygame.image.load("images/bg1.png")

def handleEvent():
    for event in pygame.event.get():
        if event.type == QUIT or event.type == KEYDOWN and event.key == K_ESCAPE:
            pygame.quit() 
            sys.exit()

x = 100
y = 0

x1 = 0
y1 = 0

while True:
    
    canvas.blit(bg, (x1, y1))
    y1 += 1
    
    canvas.blit(enemy, (x1, y1))
    y1 += 2
    
    #延时15毫秒
    pygame.time.delay(15)
    # 更新屏幕内容
    pygame.display.update()
    #监听有没有按下退出按钮
    handleEvent()

两张背景向下移动

#coding:utf-8
import pygame,sys,easygui
from pygame.locals import *
#初始化pygame环境
pygame.init()

#创建一个长宽分别为480/650窗口
canvas = pygame.display.set_mode((480, 650))
canvas.fill((255,255,255))

#设置窗口标题
pygame.display.set_caption("飞机大战")


#加载图片
enemy=pygame.image.load("images/enemy1.png")
bg=pygame.image.load("images/bg1.png")

def handleEvent():
    for event in pygame.event.get():
        if event.type == QUIT or event.type == KEYDOWN and event.key == K_ESCAPE:
            pygame.quit() 
            sys.exit()

height = 852
x = 100
y = 0

x1 = 0
y1 = 0

x2 = 0
y2 = -height

while True:
    
    canvas.blit(bg, (x1, y1))
    y1 += 1
    
    canvas.blit(bg, (x2, y2))
    y2 += 1
    
    canvas.blit(enemy, (x, y))
    y += 2
    
    #延时15毫秒
    pygame.time.delay(15)
    # 更新屏幕内容
    pygame.display.update()
    #监听有没有按下退出按钮
    handleEvent()

背景连续移动

#coding:utf-8
import pygame,sys,easygui
from pygame.locals import *
#初始化pygame环境
pygame.init()

#创建一个长宽分别为480/650窗口
canvas = pygame.display.set_mode((480, 650))
canvas.fill((255,255,255))

#设置窗口标题
pygame.display.set_caption("飞机大战")


#加载图片
enemy=pygame.image.load("images/enemy1.png")
bg=pygame.image.load("images/bg1.png")

def handleEvent():
    for event in pygame.event.get():
        if event.type == QUIT or event.type == KEYDOWN and event.key == K_ESCAPE:
            pygame.quit() 
            sys.exit()

height = 852
x = 100
y = 0

x1 = 0
y1 = 0

x2 = 0
y2 = -height

while True:
    
    canvas.blit(bg, (x1, y1))
    y1 += 1
    
    canvas.blit(bg, (x2, y2))
    y2 += 1
    
    canvas.blit(enemy, (x, y))
    y += 2
    
    if y1 > 852:
        y1 = -height
    
    if y2 > height:
        y2 = -height
    
    #延时15毫秒
    pygame.time.delay(15)
    # 更新屏幕内容
    pygame.display.update()
    #监听有没有按下退出按钮
    handleEvent()

飞机循环飞行

#coding:utf-8
import pygame,sys,easygui
from pygame.locals import *
#初始化pygame环境
pygame.init()

#创建一个长宽分别为480/650窗口
canvas = pygame.display.set_mode((480, 650))
canvas.fill((255,255,255))

#设置窗口标题
pygame.display.set_caption("飞机大战")


#加载图片
enemy=pygame.image.load("images/enemy1.png")
bg=pygame.image.load("images/bg1.png")

def handleEvent():
    for event in pygame.event.get():
        if event.type == QUIT or event.type == KEYDOWN and event.key == K_ESCAPE:
            pygame.quit() 
            sys.exit()

height = 852
x = 100
y = 0

x1 = 0
y1 = 0

x2 = 0
y2 = -height

while True:
    
    canvas.blit(bg, (x1, y1))
    y1 += 1
    
    canvas.blit(bg, (x2, y2))
    y2 += 1
    
    canvas.blit(enemy, (x, y))
    y += 2
    
    if y1 > height:
        y1 = -height
    
    if y2 > height:
        y2 = -height
        
    if y > 650:
        y = 0
    
    #延时15毫秒
    pygame.time.delay(15)
    # 更新屏幕内容
    pygame.display.update()
    #监听有没有按下退出按钮
    handleEvent()

飞机超过y坐标300，向右移动

#coding:utf-8
import pygame,sys,easygui
from pygame.locals import *
#初始化pygame环境
pygame.init()

#创建一个长宽分别为480/650窗口
canvas = pygame.display.set_mode((480, 650))
canvas.fill((255,255,255))

#设置窗口标题
pygame.display.set_caption("飞机大战")


#加载图片
enemy=pygame.image.load("images/enemy1.png")
bg=pygame.image.load("images/bg1.png")

def handleEvent():
    for event in pygame.event.get():
        if event.type == QUIT or event.type == KEYDOWN and event.key == K_ESCAPE:
            pygame.quit() 
            sys.exit()

height = 852
x = 100
y = 0

x1 = 0
y1 = 0

x2 = 0
y2 = -height

while True:
    
    canvas.blit(bg, (x1, y1))
    y1 += 1
    
    canvas.blit(bg, (x2, y2))
    y2 += 1
    
    canvas.blit(enemy, (x, y))
    if y <= 300:
        y += 2
    
    if y1 > height:
        y1 = -height
    
    if y2 > height:
        y2 = -height
        
    if y > 300:
        x += 1
        
    #延时15毫秒
    pygame.time.delay(15)
    # 更新屏幕内容
    pygame.display.update()
    #监听有没有按下退出按钮
    handleEvent()