pygame入门基础知识(四)

pygame 碰撞检测功能：

添加碰撞检测的代码如下：为了查看效果，加入了音乐的播放代码实现

from random import randint
import sys
import pygame

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

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

#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')



#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 = 'D:\\temp\\gold.png'
gold_img = r'H:\temp\sz.jpg'

#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)


#hero_img = 'D:\\temp\\hero.jpg'
hero_img = r'H:\temp\dw.jpg'
#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

#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
    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):
            group.remove(gold_of_group)            
            music_dd.play()
            
    hero.draw(screen)
    group.update(5) #更新位置
    group.draw(screen) #放到屏幕上
    pygame.display.update()

在窗口上绘制文字，比如倒计时，分数等

from random import randint
import sys
import pygame

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

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

#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')



#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 = 'D:\\temp\\gold.png'
gold_img = r'H:\temp\sz.jpg'

#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)


#hero_img = 'D:\\temp\\hero.jpg'
hero_img = r'H:\temp\dw.jpg'
#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

#设置字体
my_font = pygame.font.SysFont(['方正粗黑宋简体','microsoftsansserif'],20)
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 - pygame.time.get_ticks()) // 60000) + ":" + str((90000 - 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:
        pygame.time.wait(3000) #暂停三秒后退出
        break
    pygame.display.update()