pygame入门基础知识(五)

添加开始和结束界面：

添加了开始和结束界面的代码示例：

from random import randint
import sys
import pygame


'''
Pygame 是一个专门用来开发游戏的 Python 模块，主要为开发、设计 2D 电子游戏而生，
它是一个免费、开源的第三方软件包，支持多种操作系统，具有良好的跨平台性（比如 Windows、Linux、Mac 等）。
Pygame 是 Pete Shinners 在 SDL（Simple DirectMedia Layer，一套开源的跨平台多媒体开发库）
基础上开发而来，其目的是取代 PySDL
安装
pip install pygame
'''

pygame.init()
width,height = 1000,500

screen = pygame.display.set_mode([width,height])
pygame.display.set_caption('学习小游戏')

#创建精灵
class Gold(pygame.sprite.Sprite):
   
    def __init__(self,image,pos):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image)  #加载精灵图片
        self.image = pygame.transform.scale(self.image,(20,20)).convert() #改变图片大小
        self.rect = self.image.get_rect() #获取图片矩形
        self.rect.topleft = pos  #设置图片位置
        

    def update(self,speed):
        self.speed = speed
        self.rect.top += self.speed #向下移动  top一直增加
        if self.rect.top >= height:  
            self.kill()  # 超过了屏幕 删除

gold_img = r'H:\temp\sz.jpg'
hero_img = r'H:\temp\dw.jpg'

#设置字体
my_font = pygame.font.SysFont(['方正粗黑宋简体','microsoftsansserif'],20)
    
#创建一个精灵 放到底部
class Hero(pygame.sprite.Sprite):

    def __init__(self,image,pos):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image) #加载精灵图片
        self.image = pygame.transform.scale(self.image,(40,40)).convert() #改变图片大小
        self.rect = self.image.get_rect() #获取图片矩形
        self.rect.center = pos  #设置图片位置

    def move(self,speed,where):
        self.speed = speed
        if where == 'right' and self.rect.left <= (width - 40): 
            self.image = pygame.image.load(hero_img) #加载精灵图片
            self.image = pygame.transform.scale(self.image,(40,40)).convert() #改变图片大小
            self.rect.left += self.speed #向右移动  left一直增加
        elif self.rect.left >= 0  and  where == 'left':
            self.image = pygame.image.load(gold_img) #加载精灵图片
            self.image = pygame.transform.scale(self.image,(40,40)).convert() #改变图片大小
            self.rect.left -= self.speed #向左移动 left一直减少
    
    def draw(self,screen):
        screen.blit(self.image,self.rect)


def startInterface():
    clock = pygame.time.Clock()
    while True:
        screen.fill((0,0,255))
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
        
        start_text = my_font.render('please press space key to start', True, (0, 0, 0))
        start_rect = start_text.get_rect()
        start_rect.center = (width/2,height/2)
        screen.blit(start_text, start_rect)
        if pygame.key.get_pressed()[pygame.K_SPACE]:
            print('keydown')
            return
        clock.tick(10)
        pygame.display.flip()

def endInterface(score):
    clock = pygame.time.Clock()
    while True:
        screen.fill((0,255,0))
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
        
        score_text = my_font.render('your final score is :{}'.format(score), True, (0, 0, 0))
        score_rect = score_text.get_rect()
        score_rect.center = (width/2 - score_rect.height,height/2- score_rect.height)
        screen.blit(score_text, score_rect)
        start_text = my_font.render('press esc to quit; press enter to continue', True, (0, 0, 0))
        start_rect = start_text.get_rect()
        start_rect.center = (width/2,height/2)
        screen.blit(start_text, start_rect)
        if pygame.key.get_pressed()[pygame.K_RETURN]:
            return
        if pygame.key.get_pressed()[pygame.K_ESCAPE]:
            pygame.quit()
            sys.exit()

        clock.tick(10)
        pygame.display.flip()



def run():
    #开始界面
    startInterface()
    before_start = pygame.time.get_ticks()
    #加载背景音乐
    pygame.mixer.init()
    pygame.mixer.music.load(r'H:\temp\bg.mp3')
    pygame.mixer.music.play(-1)
    #加载音效
    music_dd = pygame.mixer.Sound(r'H:\temp\dd.mp3')
    #初始位置居中显示            
    hero = Hero(hero_img,(width/2,height-22))

    #创建精灵组
    group = pygame.sprite.Group()
    #控制一下精灵出现的数量和频率
    gold_count = 0
    gold_frep = randint(10,20) #10到20帧出现一个

    score = 0 #初始得分为0

    #创建时钟
    clock = pygame.time.Clock()
    while True:
        #填充屏幕为白色
        screen.fill((255,255,255))
        clock.tick(40) #每秒刷新60帧

        # --倒计时信息
        countdown_text = 'count down: ' + str((90000+before_start - pygame.time.get_ticks()) // 60000) + ":" + str((90000+before_start - pygame.time.get_ticks()) // 1000 % 60).zfill(2)
        countdown_text = my_font.render(countdown_text, True, (0, 0, 0))
        countdown_rect = countdown_text.get_rect()
        countdown_rect.topright = [950, 5]
        screen.blit(countdown_text, countdown_rect)


        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
        
        key_pressed = pygame.key.get_pressed()
        if key_pressed[pygame.K_a] or key_pressed[pygame.K_LEFT]:
            hero.move(5,'left')
        if key_pressed[pygame.K_d] or key_pressed[pygame.K_RIGHT]:
            hero.move(5,'right') 

        gold_count += 1
        if gold_count > gold_frep:
            gold_frep = randint(10,20) #10到20帧出现一个
            #添加精灵到精灵组
            gold = Gold(gold_img,(randint(0,width),0))
            group.add(gold)
            gold_count = 0 #恢复0

        #碰撞检测
        for gold_of_group in group:
            if pygame.sprite.collide_mask(hero,gold_of_group): #判断是否碰撞
                group.remove(gold_of_group)  #移除出组          
                music_dd.play() #播放音效
                score+=1 #加分

        #将分数显示到窗口中
        score_text = 'score:{}'.format(score)
        score_text = my_font.render(score_text,True,(0,0,0))
        score_rect = score_text.get_rect()
        score_rect.topleft = [5,5]
        screen.blit(score_text,score_rect)

        hero.draw(screen)
        group.update(5) #更新位置
        group.draw(screen) #放到屏幕上
        # --判断游戏是否结束
        if pygame.time.get_ticks() >= 90000 + before_start:
            pygame.mixer.music.stop() #停止音乐
            return score
        pygame.display.update()


if __name__ == '__main__':
    while True:
        score = run()
        endInterface(score)