python小游戏设计入门5-捡金币游戏(下)

# 导入两个库
import sys,pygame
import random
from pygame.locals import *
# 使用前先需要初始化，初始化所有被导入的pygame子模块，固定用法
pygame.init() # 初始化pygame
# 游戏肯定是在一个窗口中，那我们先来创建一个窗口
size = width, height = 600, 480 # 设置窗口大小
screen = pygame.display.set_mode(size) # 显示窗口
pygame.display.set_caption("捡金币游戏") #设置游戏窗口标题
# 创建玩家角色类
class Player(pygame.sprite.Sprite):
 def __init__(self,player_image):
        pygame.sprite.Sprite.__init__(self)
 self.image=pygame.image.load(player_image)
 # 获得精灵对象矩形区域,为碰撞做准备
 self.rect=self.image.get_rect()
# 创建金币角色类
class Coin(pygame.sprite.Sprite):
 def __init__(self,gold_image):
        pygame.sprite.Sprite.__init__(self)
        origin_gold = pygame.image.load(gold_image)
 # 缩放大小
 self.image=pygame.transform.scale(origin_gold, (32, 32))
 # 获得精灵对象矩形区域,为碰撞做准备
 self.rect=self.image.get_rect()
def checkfor_keypress():
 if len(pygame.event.get(QUIT)) > 0:
        pygame.quit()
        sys.exit()
    keyUpEvents = pygame.event.get(KEYUP)
 if len(keyUpEvents) == 0:
 return None
 elif keyUpEvents[0].key == K_ESCAPE:
        pygame.quit()
        sys.exit()
 else:
 return keyUpEvents[0].key
def draw_press_key_msg():
    basicfont=pygame.font.Font("anna.ttf",30)
    pressKeySurf = basicfont.render('Press a key to play.', True,( 40, 40, 40)) 
    presstext_width,presstext_height = pressKeySurf.get_size() 
    screen.blit(pressKeySurf, ((width-presstext_width)/2,(height-presstext_height)/2+150))
def showstartscreen():
    font=pygame.font.Font("anna.ttf",100)
    start_text=font.render("捡金币游戏",True,(255,0,0))
    text_width,text_height=start_text.get_size()
 while True: 
        screen.fill((124,205,124)) # 绘制背景
        screen.blit(start_text,((width-text_width)/2,(height-text_height)/2))
        draw_press_key_msg()
 if checkfor_keypress():
            pygame.event.get() # clear event queue
 return
        pygame.display.update()
def showwaitscreen():
    font=pygame.font.Font("anna.ttf",100)
    wait_text=font.render("游戏暂停",True,(255,0,0))
    text_width,text_height=wait_text.get_size()
 while True: 
        screen.fill((124,205,124)) # 绘制背景
        screen.blit(wait_text,((width-text_width)/2,(height-text_height)/2))
 if checkfor_keypress()==K_s:
            pygame.event.get() # clear event queue
 return
        pygame.display.update()
def showgameoverscreen():
    font=pygame.font.Font("anna.ttf",100)
    over_text=font.render("game over",True,(255,0,0))
    text_width,text_height=over_text.get_size()
 while True: 
        screen.fill((124,205,124)) # 绘制背景
        screen.blit(over_text,((width-text_width)/2,(height-text_height)/2))
        draw_press_key_msg()
 if checkfor_keypress():
            pygame.event.get() # clear event queue
 return
        pygame.display.update()
# 创建精灵组，便于管理所有精灵类对象
allsprites=pygame.sprite.Group()
# 用于管理所有的金币精灵对象
coin_sprites=pygame.sprite.Group()
# 实例化游戏对象
player=Player('Person_walk1.png')
# 创建多个金币 20
for i in range(20):
    gold = Coin("gold_1.png")
 # 将金币的显示位置设置为一个随机范围
    gold.rect.x = random.randrange(32,600)
    gold.rect.y = random.randrange(32,400)
    coin_sprites.add(gold) # 添加进精灵组
# 添加玩家角色 和 所有金币角色
allsprites.add(player,coin_sprites)
# 添加分数变量
score = 0
# 字体设置
font=pygame.font.Font("anna.ttf",24) # 自己下载的字体，可以显示中文
showstartscreen()
while True: # 死循环确保窗口一直显示
 for event in pygame.event.get(): # 遍历所有事件
 if event.type == pygame.QUIT: # 如果单击关闭窗口，则退出
            sys.exit()
 elif event.type ==pygame.KEYUP:
 if event.key ==K_s:
                showwaitscreen()
    pos=pygame.mouse.get_pos()
 # 碰撞检测 一个是玩家 一个是金币精灵组 True表示碰撞就删除碰撞的角色金币
    coins=pygame.sprite.spritecollide(player, coin_sprites, True)
 # 统计返回的碰撞金币精灵列表数量
 for coin in coins:
        score=score+1 # 每次加 1
 if score==20:
        showgameoverscreen()
 break
 # 将玩家的坐标设置为鼠标的位置
    player.rect.x=pos[0]
    player.rect.y=pos[1]
    screen.fill((124,205,124)) # 绘制背景
    allsprites.draw(screen) # 将玩家和金币绘制到屏幕上
 # 显示计分
    text=font.render("分数：{}".format(score),True,(255,0,0))
    screen.blit(text,(10,10)) 
   pygame.display.flip() # 更新