先不讲解，直接附上源代码:

import pygame  # 将pygame库导入到python程序中     
from pygame.locals import *  # 导入pygame中的常量SCREENWIDTH = 822  # 窗口宽度
SCREENHEIGHT = 260  # 窗口高度
FPS = 30  # 更新画面的时间# 定义一个滚动地图类
class MyMap():def __init__(self, x, y):# 加载背景图片self.bg = pygame.image.load("image/bg.png").convert_alpha()self.x = xself.y = ydef map_rolling(self):if self.x < -790:  # 小于-790说明地图已经完全移动完毕self.x = 800  # 给地图一个新的坐标点else:self.x -= 5  # 5个像素向左移动def map_update(self):SCREEN.blit(self.bg, (self.x, self.y))from itertools import cycle  # 导入迭代工具# 恐龙类
class Dinosaur():def __init__(self):# 初始化小恐龙矩形self.rect = pygame.Rect(0, 0, 0, 0)self.jumpState = False  # 跳跃的状态self.jumpHeight = 130  # 跳跃的高度self.lowest_y = 140  # 最低坐标self.jumpValue = 0  # 跳跃增变量# 小恐龙动图索引self.dinosaurIndex = 0self.dinosaurIndexGen = cycle([0, 1, 2])# 加载小恐龙图片self.dinosaur_img = (pygame.image.load("image/dinosaur1.png").convert_alpha(),pygame.image.load("image/dinosaur2.png").convert_alpha(),pygame.image.load("image/dinosaur3.png").convert_alpha(),)self.jump_audio = pygame.mixer.Sound('audio/jump.wav')  # 跳self.rect.size = self.dinosaur_img[0].get_size()self.x = 50;  # 绘制恐龙的X坐标self.y = self.lowest_y;  # 绘制恐龙的Y坐标self.rect.topleft = (self.x, self.y)# 跳状态def jump(self):self.jumpState = True# 小恐龙移动def move(self):if self.jumpState:  # 当起跳的时候if self.rect.y >= self.lowest_y:  # 如果站在地上self.jumpValue = -5  # 以5个像素值向上移动if self.rect.y <= self.lowest_y - self.jumpHeight:  # 恐龙到达顶部回落self.jumpValue = 5  # 以5个像素值向下移动self.rect.y += self.jumpValue  # 通过循环改变恐龙的Y坐标if self.rect.y >= self.lowest_y:  # 如果恐龙回到地面self.jumpState = False  # 关闭跳跃状态# 绘制恐龙def draw_dinosaur(self):# 匹配恐龙动图dinosaurIndex = next(self.dinosaurIndexGen)# 绘制小恐龙SCREEN.blit(self.dinosaur_img[dinosaurIndex],(self.x, self.rect.y))
import random  # 随机数
# 障碍物类
class Obstacle():score = 1  # 分数def __init__(self):# 初始化障碍物矩形self.rect = pygame.Rect(0, 0, 0, 0)# 加载障碍物图片self.stone = pygame.image.load("image/stone.png").convert_alpha()self.cacti = pygame.image.load("image/cacti.png").convert_alpha()# 加载分数图片self.numbers = (pygame.image.load('image/0.png').convert_alpha(),pygame.image.load('image/1.png').convert_alpha(),pygame.image.load('image/2.png').convert_alpha(),pygame.image.load('image/3.png').convert_alpha(),pygame.image.load('image/4.png').convert_alpha(),pygame.image.load('image/5.png').convert_alpha(),pygame.image.load('image/6.png').convert_alpha(),pygame.image.load('image/7.png').convert_alpha(),pygame.image.load('image/8.png').convert_alpha(),pygame.image.load('image/9.png').convert_alpha())# 加载加分音效self.score_audio = pygame.mixer.Sound('audio/score.wav')  # 加分# 0和1随机数r = random.randint(0, 1)if r == 0:  # 如果随机数为0显示石头障碍物相反显示仙人掌self.image = self.stoneelse:self.image = self.cacti# 根据障碍物位图的宽高来设置矩形self.rect.size = self.image.get_size()# 获取位图宽高self.width, self.height = self.rect.size# 障碍物绘制坐标self.x = 800;self.y = 200 - (self.height / 2)self.rect.center = (self.x, self.y)# 障碍物移动def obstacle_move(self):self.rect.x -= 5# 绘制障碍物def draw_obstacle(self):SCREEN.blit(self.image, (self.rect.x, self.rect.y))# 获取分数def getScore(self):self.scoretmp = self.score;if tmp == 1:self.score_audio.play()  # 播放加分音乐self.score = 0;return tmp;# 显示分数def showScore(self, score):"""在窗体顶部中间的位置显示分数"""self.scoreDigits = [int(x) for x in list(str(score))]totalWidth = 0  # 要显示的所有数字的总宽度for digit in self.scoreDigits:# 获取积分图片的宽度totalWidth += self.numbers[digit].get_width()# 分数横向位置Xoffset = (SCREENWIDTH - totalWidth) / 2for digit in self.scoreDigits:# 绘制分数SCREEN.blit(self.numbers[digit], (Xoffset, SCREENHEIGHT * 0.1))# 随着数字增加改变位置Xoffset += self.numbers[digit].get_width()
# 游戏结束的方法
def game_over():bump_audio = pygame.mixer.Sound('audio/bump.wav')  # 撞击bump_audio.play()  # 播放撞击音效# 获取窗体宽、高screen_w = pygame.display.Info().current_wscreen_h = pygame.display.Info().current_h# 加载游戏结束的图片over_img = pygame.image.load('image/gameover.png').convert_alpha()# 将游戏结束的图片绘制在窗体的中间位置SCREEN.blit(over_img, ((screen_w - over_img.get_width()) / 2,(screen_h - over_img.get_height()) / 2))def mainGame():score = 0  # 得分over = Falseglobal SCREEN, FPSCLOCKpygame.init()  # 经过初始化以后我们就可以尽情地使用pygame了。# 使用Pygame时钟之前，必须先创建Clock对象的一个实例，# 控制每个循环多长时间运行一次。FPSCLOCK = pygame.time.Clock()SCREEN = pygame.display.set_mode((SCREENWIDTH, SCREENHEIGHT))  # 通常来说我们需要先创建一个窗口，方便我们与程序的交互。pygame.display.set_caption('小恐龙')  # 设置窗口标题# 创建地图对象bg1 = MyMap(0, 0)bg2 = MyMap(800, 0)# 创建恐龙对象dinosaur = Dinosaur()addObstacleTimer = 0  # 添加障碍物的时间list = []  # 障碍物对象列表while True:# 判断是否单击了关闭窗口for event in pygame.event.get():# 如果单击了关闭窗口就将窗口关闭if event.type == QUIT:exit()  # 关闭窗口# 单击键盘空格键，开启跳的状态if event.type == KEYDOWN and event.key == K_SPACE:if dinosaur.rect.y >= dinosaur.lowest_y:  # 如果恐龙在地面上dinosaur.jump()  # 开启恐龙跳的状态dinosaur.jump_audio.play()  # 播放小恐龙跳跃音效if over == True:  # 判断游戏结束的开关是否开启mainGame()  # 如果开启将调用mainGame方法重新启动游戏if over == False:# 绘制地图起到更新地图的作用bg1.map_update()# 地图移动bg1.map_rolling()bg2.map_update()bg2.map_rolling()# 恐龙移动dinosaur.move()# 绘制恐龙dinosaur.draw_dinosaur()# 计算障碍物间隔时间if addObstacleTimer >= 1300:r = random.randint(0, 100)if r > 40:# 创建障碍物对象obstacle = Obstacle()# 将障碍物对象添加到列表中list.append(obstacle)# 重置添加障碍物时间addObstacleTimer = 0# 循环遍历障碍物for i in range(len(list)):# 障碍物移动list[i].obstacle_move()# 绘制障碍物list[i].draw_obstacle()# 判断恐龙与障碍物是否碰撞if pygame.sprite.collide_rect(dinosaur, list[i]):over = True  # 碰撞后开启结束开关game_over()  # 调用游戏结束的方法else:# 判断小恐龙是否跃过了障碍物if (list[i].rect.x + list[i].rect.width) < dinosaur.rect.x:# 加分score += list[i].getScore()# 显示分数list[i].showScore(score)addObstacleTimer += 20   # 增加障碍物时间pygame.display.update()  # 更新整个窗口FPSCLOCK.tick(FPS)  # 循环应该多长时间运行一次if __name__ == '__main__':mainGame()

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