用Python做一个高山滑雪小游戏_python滑雪小游戏代码

作者：AllinToyou | 2024-03-13 18:25:57

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python滑雪小游戏代码

介绍一款好玩的游戏的开发。该游戏名为高山滑雪，改编自《Computer Programming for Kids and other Beginners》的第25章。

游戏效果

游戏的基本界面如下：

滑雪者由高山上滑下，玩家通过键盘上的左右方向键控制滑雪者向左转或向右转。

动画效果如下：

python 代码如下：

#用于定义常量的类
class const:
    class ConstError(TypeError):
        pass
    def _setattr__(self, name, value):
        if self.__dict__.has_key(name):
            raise self.ConstError("Can't rebind const (%s)" %name)
        self.__dict__[name] = value

const.MaxSpeed = 10 #设置最大的下滑速度

import pygame, sys, random
# 滑雪者在不同的方向上应该显示的图像
skier_images = ["skier_down.png", "skier_right1.png", "skier_right2.png",
                 "skier_left2.png", "skier_left1.png"]


# 滑雪者角色类
class SkierClass(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load("skier_down.png")
        self.rect = self.image.get_rect()
        self.rect.center = [320, 100]
        self.angle = 0
        
    def turn(self, direction):         
        # 当滑雪者转向时，加载对应的图片并且修改速度值
        self.angle = self.angle + direction
        if self.angle < -2:  self.angle = -2
        if self.angle >  2:  self.angle =  2 
        center = self.rect.center
        self.image = pygame.image.load(skier_images[self.angle])
        self.rect = self.image.get_rect()
        self.rect.center = center
        speed = [self.angle, const.MaxSpeed - abs(self.angle) * 2]
        return speed
    
    def move(self, speed):
        # move the skier right and left
        self.rect.centerx = self.rect.centerx + speed[0]*2
        if self.rect.centerx < 20:  self.rect.centerx = 20
        if self.rect.centerx > 620: self.rect.centerx = 620 
        
# 表示障碍物的类定义,包括树和旗子
class ObstacleClass(pygame.sprite.Sprite):
    def __init__(self, image_file, location, type):
        pygame.sprite.Sprite.__init__(self) 
        self.image_file = image_file        
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.center = location
        self.type = type
        self.passed = False
                   
    def update(self):
        global speed
        self.rect.centery -= speed[1]
        if self.rect.centery < -32:
            self.kill()

# create one "screen" of obstacles: 640 x 640
# use "blocks" of 64 x 64 pixels, so objects aren't too close together
def create_map():
    global obstacles
    locations = []
    for i in range(10):                 # 10 obstacles per screen 
        row = random.randint(0, 9)
        col = random.randint(0, 9)
        location  = [col * 64 + 32, row * 64 + 32 + 640] #center x, y for obstacle
        if not (location in locations):        # prevent 2 obstacles in the same place
            locations.append(location)          
            type = random.choice(["tree", "flag"])
            if type == "tree": img = "skier_tree.png"
            elif type == "flag":  img = "skier_flag.png"
            obstacle = ObstacleClass(img, location, type)
            obstacles.add(obstacle)

# 重绘显示区域，形成动画效果
def animate():
    screen.fill([255, 255, 255])
    obstacles.draw(screen)
    screen.blit(skier.image, skier.rect)
    screen.blit(score_text, [10, 10])
    pygame.display.flip()    

# 初始化各种对象
pygame.init()
screen = pygame.display.set_mode([640,640])
clock = pygame.time.Clock()
speed = [0, const.MaxSpeed] # 速度值，包含方向与向下的速度
obstacles = pygame.sprite.Group()   # group of obstacle objects
skier = SkierClass()
map_position = 0
points = 0
create_map()      # create one screen full of obstacles
font = pygame.font.Font(None, 50)

# 事件处理循环
running = True
while running:
    clock.tick(30) #设定每秒帧数
    for event in pygame.event.get():
        if event.type == pygame.QUIT: running = False
        
        if event.type == pygame.KEYDOWN:          # 如果按下了键盘上的键
            if event.key == pygame.K_LEFT:        # 如果按下了向左的方向键
                speed = skier.turn(-1)
            elif event.key == pygame.K_RIGHT:     #如果按下了向右的方向键
                speed = skier.turn(1)
    skier.move(speed)                         # 滑雪者向左或向右移动
    map_position += speed[1]                      # 修改地图的位置，使得障碍物向上移动，造成了滑雪者向下滑行的效果
    
    # 如果地图的位置到达窗口底部，则生成一屏障碍物
    if map_position >= 640:
        create_map()
        map_position = 0
    
    # 检查滑雪者是否碰到了树或旗子
    hit =  pygame.sprite.spritecollide(skier, obstacles, False)
    if hit:
        if hit[0].type == "tree" and not hit[0].passed:  #碰到了树，并且这个树还没有被“处理”过
            points = points - 100
            skier.image = pygame.image.load("skier_crash.png")  # 显示滑雪者翻倒的图片
            animate()  
            pygame.time.delay(1000)
            skier.image = pygame.image.load("skier_down.png")  # 显示滑雪者正常滑行的图片
            skier.angle = 0
            speed = [0, const.MaxSpeed]
            hit[0].passed = True
        elif hit[0].type == "flag" and not hit[0].passed:   # 碰到了一个旗子
            points += 10
            hit[0].kill()                                 # 清除点这个被碰到的旗子 
    
    obstacles.update()

    score_text = font.render("Score: " +str(points), 1, (0, 0, 0)) #更新提示的文本信息
    animate()
    
pygame.quit() #退出pygame
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