有效沟通问答-【官方】百战程序员_IT在线教育培训机构

'''
新增功能：
   优化我方坦克：按下方向键 坦克一直移动
   松开方向键停止移动
'''

import pygame,time

SCREEN_WIDTH = 700
SCREEN_HEIGHT = 500
BG_COLOR = pygame.Color(0,0,0)
TEXT_COLOR = pygame.Color(255,0,0)

class MainGame():#开始游戏、结束游戏的功能
    window = None
    my_tank = None
    # 开始游戏
    def startGame(self):
        #加载主窗口
        #初始化窗口
        pygame.display.init()
        #设置窗口的大小及显示
        MainGame.window = pygame.display.set_mode([SCREEN_WIDTH,SCREEN_HEIGHT])
        # 初始化我方坦克
        MainGame.my_tank = Tank(350,250)
        # 设置窗口的标题
        pygame.display.set_caption('坦克大战：v1.03')

        while True:
            #使用坦克移动的速度慢一点
            time.sleep(0.02)
            # 给窗口设置填充色
            MainGame.window.fill(BG_COLOR)
            # 获取事件
            self.getEvent()
            # 绘制文字
            MainGame.window.blit(self.getTextSurface("剩余敌方坦克%d辆"%6),(5,5))
            # 调用坦克显示的方法
            MainGame.my_tank.displayTank()
            #调用移动方法
            #如果坦克的开关是开启，才可以移动
            if not MainGame.my_tank.stop:
                MainGame.my_tank.move()

            pygame.display.update()


    def endGame(self):
        print('谢谢使用，欢迎再次使用')
        exit()

    def getTextSurface(self,text):
        pygame.font.init() # 初始化字体模块
        # print(pygame.Font.get.fonts()) 查看所有的字体名称
        # 获取字体Font对象
        font = pygame.font.SysFont('kaiti',18)
        textSurface = font.render(text,True,TEXT_COLOR)
        return textSurface # 绘制文字信息

    def getEvent(self):
        # 获取所有事件
        eventList = pygame.event.get()
        #遍历事件
        for event in eventList:
          # 判断按下的键是关闭还是键盘按下
          # 如果按的是退出，关闭窗口
          if event.type == pygame.QUIT:
              self.endGame()
          # 如果是键盘的按下
          if event.type == pygame.KEYDOWN:
          # 判断按下的是上、下、左、右
            if event.key == pygame.K_LEFT:
                #切换方向
                MainGame.my_tank.direction = 'L'
                #修改坦克的开关
                MainGame.my_tank.stop = False
                MainGame.my_tank.move()
                print('按下左键，坦克向左移动')
            elif event.key == pygame.K_RIGHT:
                #切换方向
                MainGame.my_tank.direction = 'R'
                #修改坦克的开关
                MainGame.my_tank.stop = False
                MainGame.my_tank.move()
                print('按下右键，坦克向右移动')
            elif event.key == pygame.K_UP:
                #切换方向
                MainGame.my_tank.direction = 'U'
                #修改坦克的开关
                MainGame.my_tank.stop = False
                MainGame.my_tank.move()
                print('按下上键，坦克向上移动')
            elif event.key == pygame.K_DOWN:
                #切换方向
                MainGame.my_tank.direction = 'D'
                #修改坦克的开关
                MainGame.my_tank.stop = False
                MainGame.my_tank.move()
                print('按下下键，坦克向下移动')
            elif event.key == pygame.K_SPACE:
                print('发射子弹')

          # 松开方向键，坦克停止移动，修改坦克的开关状态
            if event.type == pygame.KEYUP:
            #判断松开的键是上下左右时候才停止坦克移动
                if event.key == pygame.K_UP or event.key == pygame.K_DOWN or event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
                    MainGame.my_tank.stop = True



#定义坦克类
class Tank():
    # 添加距离左边left 距离上边top
    def __init__(self,left,top):
        self.images={
            'U': pygame.image.load('img/p1tankU.gif'),
            'D': pygame.image.load('img/p1tankD.gif'),
            'L': pygame.image.load('img/p1tankL.gif'),
            'R': pygame.image.load('img/p1tankR.gif')
        }
        # 开始的时候的坦克的方向
        self.direction = 'U'
        # 根据当前图片的方向获取图片 suface
        self.image = self.images[self.direction]
        # 坦克所在的区域  Rect->
        self.rect = self.image.get_rect()
        # 指定坦克初始化位置 分别距x，y轴的位置
        self.rect.left = left
        self.rect.top = top
        #速度 决定移动的快慢
        self.speed = 5
        #坦克移动的开关
        self.stop = True



    # 坦克的移动方法
    def move(self):
        if self.direction == 'L':
            if self.rect.left > 0:
               self.rect.left -= self.speed
        elif self.direction == 'U':
            if self.rect.top > 0:
               self.rect.top -= self.speed
        elif self.direction == 'D':
            if self.rect.top + self.rect.height < SCREEN_HEIGHT:
               self.rect.top += self.speed
        elif self.direction == 'R':
            if self.rect.left + self.rect.height < SCREEN_WIDTH:
               self.rect.left += self.speed


    # 坦克碰到墙壁的方法
    def hitWalls(self):
        pass

    # 射击方法
    def shot(self):
        pass

    #展示坦克

    def displayTank(self):
        # 获取展示对象
        self.image = self.images[self.direction]
        # 调用blit方法展示
        MainGame.window.blit(self.image, self.rect)

#我方坦克类继承坦克类 主要包括创建、与敌方坦克的碰撞方法。
class MyTank(Tank):
    def __init__(self):
        pass

    #碰撞敌方坦克的方法
    def hitEnemyTank(self):
        pass

#敌方坦克类继承坦克类，主要包括创建、与我方坦克碰撞方法
class EnemyTank(Tank):
    pass
    def __init__(self):
        pass
    def hitMyTank(self):
        pass

#子弹类：主要包括子弹的创建、显示及移动的功能
class Buttet():
    def __init__(self):
        pass

    #子弹的移动方法
    def bulletMove(self):
        pass

    #展示子弹的方法
    def displayBullet(self):
        pass

    #我方子弹碰撞敌方坦克的方法
    def hitEnemyTank(self):
        pass

    #敌方子弹与我方坦克的碰撞方法
    def hitMyTank(self):
        pass

    #子弹与墙壁的碰撞
    def hitWalls(self):
        pass

#墙壁类：主要包括墙壁的创建、显示的功能
class Wall():
    def __init__(self):
        pass

    #展示墙壁的方法
    def displayWall(self):
        pass

#爆炸效果类：主要展示爆炸效果
class Explode():
    def __init__(self):
        pass

    #展示爆炸效果
    def displayExplode(self):
        pass

#音效类：主要播放音乐
class Music():
    def __init__(self):
        pass

    #开始播放音乐
    def play(self):
        pass
MainGame().startGame()

老师你好！请问为什么我松开上下左右键之后还是可以移动呢？

Python 全系列/第二阶段：Python 深入与提高/游戏开发-坦克大战 12365楼

老师为什么我编译完后还是只有一个文件？

JAVA 全系列/第一阶段：AI驱动的JAVA编程/JAVA入门和背景知识 12366楼

老师为什么我编译完后还是只有一个文件？是哪里出错了？[object Object]

JAVA 全系列/第一阶段：AI驱动的JAVA编程/JAVA入门和背景知识 12367楼

import time

class CacheDecorator():
    __cache = {}
    def __init__(self,func):
        self.func = func
    def __call__(self, *args, **kwargs):
        #如果缓存中有对应的方法名，则直接返回对应的返回值
        if self.func.__name__ in CacheDecorator.__cache:
            return CacheDecorator.__cache[self.func.__name__]
        #如果缓存中没有对应的方法名，则进行计算，并将结果缓存
        else:
            result = self.func(*args,**kwargs)
            CacheDecorator.__cache[self.func.__name__]=result
            return result
def cost_time(func):
    def infunc(*args,**kwargs):
        start = time.time()
        result = func(*args,**kwargs)
        end = time.time()
        print(f'耗时：{end-start}')
        return result
    return infunc


@cost_time
@CacheDecorator
def func1_long_time():
    '''
    模拟耗时较长，每次返回的结果都一样的情况

    '''
    print('start func1')
    time.sleep(3)
    print('end func1')
    return 999

if __name__ == '__main__':
    r1 = func1_long_time()
    r2 = func1_long_time()
    print(r1)
    print(r2)

我不太理解为什么第二次耗时是0

Python 全系列/第四阶段：函数式编程和核心特性/装饰器深入剖析 12368楼

老师，这个递归算法的退出条件是不是那个if语句，当退出的条件满足时，file对象是不是为空呀？(file==null)

JAVA 全系列/第二阶段：JAVA 基础深化和提高/常用类 12369楼

Python 全系列/第四阶段：函数式编程和核心特性/函数式编程核心(高阶函数、闭包等) 12370楼

s为True的时候，不是应该返回s.strip()的值吗，为什么还会返回带有空格的字符串

Python 全系列/第四阶段：函数式编程和核心特性/函数式编程核心(高阶函数、闭包等) 12371楼

老师，pop（）哪里您好像写错了，对于b2=a.pop(1)

print(a,b2)的答案应该是[10,30,40,50],20

Python 全系列/第一阶段：AI驱动的Python编程/序列 12372楼

老师这种编译器报错需要安装什么插件吗才能取消

WEB前端全系列/第十九阶段：Vue2知识体系（旧）/Vue3新特性 12373楼

老师我在测试dao层的时候这个StudentDao变量爆红，我试着启动测试程序的时候，出错了，

"C:\Program Files\Java\jdk1.8.0_321\bin\java.exe" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:F:\IntelliJ IDEA 2021.3\lib\idea_rt.jar=53014:F:\IntelliJ IDEA 2021.3\bin" -Dfile.encoding=UTF-8 -classpath "F:\IntelliJ IDEA 2021.3\lib\idea_rt.jar;F:\IntelliJ IDEA 2021.3\plugins\junit\lib\junit5-rt.jar;F:\IntelliJ IDEA 2021.3\plugins\junit\lib\junit-rt.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_321\jre\lib\rt.jar;D:\ssm_demo\ssm_dao\target\test-classes;D:\ssm_demo\ssm_dao\target\classes;D:\maven_repository\org\mybatis\mybatis\3.5.7\mybatis-3.5.7.jar;D:\maven_repository\mysql\mysql-connector-java\8.0.26\mysql-connector-java-8.0.26.jar;D:\maven_repository\com\google\protobuf\protobuf-java\3.11.4\protobuf-java-3.11.4.jar;D:\maven_repository\com\alibaba\druid\1.2.8\druid-1.2.8.jar;D:\maven_repository\org\mybatis\mybatis-spring\2.0.6\mybatis-spring-2.0.6.jar;D:\maven_repository\org\springframework\spring-jdbc\5.2.12.RELEASE\spring-jdbc-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-beans\5.2.12.RELEASE\spring-beans-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-core\5.2.12.RELEASE\spring-core-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-jcl\5.2.12.RELEASE\spring-jcl-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-context\5.2.12.RELEASE\spring-context-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-aop\5.2.12.RELEASE\spring-aop-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-expression\5.2.12.RELEASE\spring-expression-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-web\5.2.12.RELEASE\spring-web-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-webmvc\5.2.12.RELEASE\spring-webmvc-5.2.12.RELEASE.jar;D:\maven_repository\org\springframework\spring-tx\5.2.12.RELEASE\spring-tx-5.2.12.RELEASE.jar;D:\maven_repository\org\aspectj\aspectjweaver\1.8.7\aspectjweaver-1.8.7.jar;D:\maven_repository\org\apache\taglibs\taglibs-standard-spec\1.2.5\taglibs-standard-spec-1.2.5.jar;D:\maven_repository\org\apache\taglibs\taglibs-standard-impl\1.2.5\taglibs-standard-impl-1.2.5.jar;D:\maven_repository\javax\servlet\servlet-api\2.5\servlet-api-2.5.jar;D:\maven_repository\javax\servlet\jsp\jsp-api\2.0\jsp-api-2.0.jar;D:\maven_repository\junit\junit\4.12\junit-4.12.jar;D:\maven_repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;D:\maven_repository\org\springframework\spring-test\5.2.12.RELEASE\spring-test-5.2.12.RELEASE.jar;D:\maven_repository\log4j\log4j\1.2.12\log4j-1.2.12.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.itbz.dao.StudentDaoTest

三月 25, 2022 10:30:54 上午 org.springframework.test.context.support.AbstractTestContextBootstrapper getDefaultTestExecutionListenerClassNames

信息: Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener, org.springframework.test.context.event.EventPublishingTestExecutionListener]

三月 25, 2022 10:30:54 上午 org.springframework.test.context.support.AbstractTestContextBootstrapper getTestExecutionListeners

信息: Using TestExecutionListeners: [org.springframework.test.context.web.ServletTestExecutionListener@6eebc39e, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@464bee09, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@f6c48ac, org.springframework.test.context.support.DirtiesContextTestExecutionListener@13deb50e, org.springframework.test.context.transaction.TransactionalTestExecutionListener@239963d8, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@3abbfa04, org.springframework.test.context.event.EventPublishingTestExecutionListener@57fffcd7]

三月 25, 2022 10:30:54 上午 org.apache.ibatis.logging.commons.JakartaCommonsLoggingImpl warn

警告: No MyBatis mapper was found in '[com.itbaizhan.dao]' package. Please check your configuration.

log4j:ERROR Could not find value for key log4j.appender.LOGFILE

log4j:ERROR Could not instantiate appender named "LOGFILE".

三月 25, 2022 10:30:54 上午 org.springframework.test.context.TestContextManager prepareTestInstance

严重: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@f6c48ac] to prepare test instance [com.itbz.dao.StudentDaoTest@2e55dd0c]

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'com.itbz.dao.StudentDaoTest': Unsatisfied dependency expressed through field 'studentDao'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.itbz.dao.StudentDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)

at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)

at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:392)

at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:119)

at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)

at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)

at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)

at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)

at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)

at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)

at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)

at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.itbz.dao.StudentDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1717)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1273)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)

at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)

... 29 more