import pygame
import random

background='background.png'
duan_left='duan_left.png'
duan_right='duan_right.png'
bing='bing.png'

pygame.init()
font=pygame.font.SysFont('SimHei',24)
screen=pygame.display.set_mode((410,595))

background_image=pygame.image.load(background)
duan_image=pygame.image.load(duan_left)
bing_image=pygame.image.load(bing)

bgm=pygame.mixer.Sound('image/bgm.wav')
channel_1=pygame.mixer.Channel(1)
channel_1.play(bgm)


score=0
score_color=(200,30,100)
bing_x=0
bing_y=-50
duan_x=200
duan_y=500
duan_move_x=0


keep_going=True
while keep_going:
	for event in pygame.event.get():   
		if event.type==pygame.QUIT:     
			keep_going=False
		if event.type==pygame.KEYDOWN:
			if event.key==pygame.K_LEFT:
				duan_image=pygame.image.load(duan_left)
				duan_move_x=-2
			if event.key==pygame.K_RIGHT:
				duan_image=pygame.image.load(duan_right)
				duan_move_x=+2
		if event.type==pygame.KEYUP:
			if event.key==pygame.K_LEFT:
				duan_move_x=0
			if event.key==pygame.K_RIGHT:
				duan_move_x=0
	bing_y+=3
	duan_x+=duan_move_x

	if duan_x<0:
		duan_x=0
	elif duan_x>350:
		duan_x=350

	if bing_y>600:
		bing_x=random.randint(10,350)
		bing_y=-50
		score-=10
	elif bing_y>duan_y:
		if(bing_x>duan_x-44) and (bing_x<duan_x+44):
			bing_x=random.randint(10,350)
			bing_y=-50
			score+=10
			pick=pygame.mixer.Sound('image/pick.wav')
			channel_2=pygame.mixer.Channel(2)
			channel_2.play(pick)

	screen.blit(background_image,(0,0))
	screen.blit(duan_image,(duan_x,duan_y))
	screen.blit(bing_image,(bing_x,bing_y))
	text=font.render('分数：'+str(score),True,score_color)
	screen.blit(text,(0,0))
	pygame.display.update()

pygame.quit()