import pygame
from pygame import locals
import random

pygame.init()  # 初始化
game=True
class Block(pygame.sprite.Sprite):
    def __init__(self,image1,image2,image3):
        super().__init__()
        # 加载障碍物的图片
        self.image = random.choice([image1, image2, image3])
        # 根据障碍物位图的宽高设置矩形
        self.rect = self.image.get_rect()
        # 障碍物绘制坐标
        self.rect.x = 1000
        self.rect.y = 500 - self.rect.height

class player(pygame.sprite.Sprite):
    def __init__(self,image):
        super().__init__()
        # 加载障碍物的图片
        self.image = image
        # 根据障碍物位图的宽高设置矩形
        self.rect = self.image.get_rect()
        # 障碍物绘制坐标
        self.rect.x =150
        self.rect.y =400
# 创建一个窗口
screen = pygame.display.set_mode((1000, 600))
FPS = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
pygame.display.set_caption("悟空酷跑")
# 载入图片
background = pygame.image.load('bg.png')    # 背景
road = pygame.image.load('road.png')      # 路
stone = pygame.image.load('stone.png')      # 石头
cacti = pygame.image.load('cacti.png')      # 仙人掌
bush = pygame.image.load('bush.png')      # 灌木丛
hero = [pygame.image.load('hero1.png'),
        pygame.image.load('hero2.png'),
        pygame.image.load('hero3.png'),
        pygame.image.load('hero4.png'),
        pygame.image.load('hero5.png')]
index = 0   
y = 400
jumpState = "runing"
t = 30

bg_x = 0
road_x = 0
time = 0


block_list =pygame.sprite.Group()

while True:
    for event in pygame.event.get():
        if event.type == locals.QUIT:
            # 接收到退出事件后退出程序
            exit()
        if event.type == locals.KEYDOWN:
            if jumpState == "runing":
                if event.key == locals.K_SPACE:
                    jumpState = "up"
    wukong = player(hero[index])
    if jumpState == "runing":       # 跑步状态下
        index += 1
        if index >= 5:
            index = 0
    if game==True:
        if jumpState == "up":    # 起跳状态
            if t > 0:
                y -= t
                wukong.rect.y=y
                t -= 2
            else:
                jumpState = "down"  
        if jumpState == "down":    # 降落状态
            if t <= 30:
                y+=t
                wukong.rect.y=y
                t += 2
            else:
                jumpState = "runing"
                t =30  
        # 悟空造型
        
        # 将背景图画上去
        bg_x -= 1
        if bg_x<=-1000:
            bg_x = 0
        screen.blit(background, (bg_x, 0))
        road_x -= 8
        if road_x<=-1000:
            road_x = 0
        screen.blit(road, (road_x, 500))
        screen.blit(wukong.image, (150, y))     # 悟空

        
        time += 1
        if time >= 60:
            r = random.randint(0, 100)
            if r > 40:
                obstacle = Block(bush,cacti,stone)
                block_list.add(obstacle)     
            time = 0
        # 遍历障碍物并展示
        for sprite in block_list:
            sprite.rect.x -= 8
            screen.blit(sprite.image, (sprite.rect.x,sprite.rect.y)) 
            if sprite.rect.x<=0-sprite.rect.width:
                sprite.kill()
            if pygame.sprite.collide_rect(wukong,sprite):
                gameover=pygame.image.load("gameover.png")
                screen.blit(gameover,(400,200)) 
                game=False
        # print(len(block_list))
        # 刷新画面
        pygame.display.update()
        FPS.tick(60)