ski.py

'''
Function:
    滑雪小游戏
Author:
    Charles
微信公众号:
    Charles的皮卡丘
'''
import os
import pygame
import random
from ...utils import QuitGame
from ..base import PygameBaseGame


'''配置类'''
class Config():
    # 根目录
    rootdir = os.path.split(os.path.abspath(__file__))[0]
    # FPS
    FPS = 40
    # 屏幕大小
    SCREENSIZE = (640, 640)
    # 标题
    TITLE = '滑雪游戏 —— Charles的皮卡丘'
    # 游戏图片路径
    IMAGE_PATHS_DICT = {
        'skier': [
            os.path.join(rootdir, 'resources/images/skier_forward.png'),
            os.path.join(rootdir, 'resources/images/skier_right1.png'),
            os.path.join(rootdir, 'resources/images/skier_right2.png'),
            os.path.join(rootdir, 'resources/images/skier_left2.png'),
            os.path.join(rootdir, 'resources/images/skier_left1.png'),
            os.path.join(rootdir, 'resources/images/skier_fall.png')
        ],
        'tree': os.path.join(rootdir, 'resources/images/tree.png'),
        'flag': os.path.join(rootdir, 'resources/images/flag.png'),
    }
    # 背景音乐路径
    BGM_PATH = os.path.join(rootdir, 'resources/audios/bgm.mp3')
    # 字体路径
    FONT_PATHS_DICT = {
        '1/5screenwidth': {'name': os.path.join(rootdir.replace('ski', 'base'), 'resources/fonts/simkai.ttf'), 'size': SCREENSIZE[0] // 5},
        '1/20screenwidth': {'name': os.path.join(rootdir.replace('ski', 'base'), 'resources/fonts/simkai.ttf'), 'size': SCREENSIZE[0] // 20},
        'default': {'name': os.path.join(rootdir.replace('ski', 'base'), 'resources/fonts/simkai.ttf'), 'size': 30},
    }


'''滑雪者类'''
class SkierSprite(pygame.sprite.Sprite):
    def __init__(self, images):
        pygame.sprite.Sprite.__init__(self)
        # 滑雪者的朝向(-2到2)
        self.direction = 0
        self.image_fall = images[-1]
        self.images = images[:-1]
        self.image = self.images[self.direction]
        self.rect = self.image.get_rect()
        self.rect.center = [320, 100]
        self.speed = [self.direction, 6 - abs(self.direction) * 2]
    '''改变滑雪者的朝向. 负数为向左，正数为向右，0为向前'''
    def turn(self, num):
        self.direction += num
        self.direction = max(-2, self.direction)
        self.direction = min(2, self.direction)
        center = self.rect.center
        self.image = self.images[self.direction]
        self.rect = self.image.get_rect()
        self.rect.center = center
        self.speed = [self.direction, 6-abs(self.direction)*2]
        return self.speed
    '''移动滑雪者'''
    def move(self):
        self.rect.centerx += self.speed[0]
        self.rect.centerx = max(20, self.rect.centerx)
        self.rect.centerx = min(620, self.rect.centerx)
    '''设置为摔倒状态'''
    def setFall(self):
        self.image = self.image_fall
    '''设置为站立状态'''
    def setForward(self):
        self.direction = 0
        self.image = self.images[self.direction]


'''障碍物类'''
class ObstacleSprite(pygame.sprite.Sprite):
    def __init__(self, image, location, attribute):
        pygame.sprite.Sprite.__init__(self)
        self.image = image
        self.location = location
        self.rect = self.image.get_rect()
        self.rect.center = self.location
        self.attribute = attribute
        self.passed = False
    '''移动'''
    def move(self, num):
        self.rect.centery = self.location[1] - num


'''滑雪小游戏'''
class SkiGame(PygameBaseGame):
    game_type = 'ski'
    def __init__(self, **kwargs):
        self.cfg = Config()
        super(SkiGame, self).__init__(config=self.cfg, **kwargs)
    '''运行游戏'''
    def run(self):
        # 初始化
        screen, resource_loader, cfg = self.screen, self.resource_loader, self.cfg
        # 播放背景音乐
        resource_loader.playbgm()
        # 游戏开始界面
        self.ShowStartInterface(screen)
        # 实例化游戏精灵
        # --滑雪者
        skier = SkierSprite(resource_loader.images['skier'])
        # --创建障碍物
        obstacles0 = self.createObstacles(20, 29)
        obstacles1 = self.createObstacles(10, 19)
        obstaclesflag = 0
        obstacles = self.AddObstacles(obstacles0, obstacles1)
        # 游戏clock
        clock = pygame.time.Clock()
        # 记录滑雪的距离
        distance = 0
        # 记录当前的分数
        score = 0
        # 记录当前的速度
        speed = [0, 6]
        # 游戏主循环
        while True:
            # --事件捕获
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    QuitGame()
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_LEFT or event.key == pygame.K_a:
                        speed = skier.turn(-1)
                    elif event.key == pygame.K_RIGHT or event.key == pygame.K_d:
                        speed = skier.turn(1)
            # --更新当前游戏帧的数据
            skier.move()
            distance += speed[1]
            if distance >= 640 and obstaclesflag == 0:
                obstaclesflag = 1
                obstacles0 = self.createObstacles(20, 29)
                obstacles = self.AddObstacles(obstacles0, obstacles1)
            if distance >= 1280 and obstaclesflag == 1:
                obstaclesflag = 0
                distance -= 1280
                for obstacle in obstacles0:
                    obstacle.location[1] = obstacle.location[1] - 1280
                obstacles1 = self.createObstacles(10, 19)
                obstacles = self.AddObstacles(obstacles0, obstacles1)
            for obstacle in obstacles:
                obstacle.move(distance)
            # --碰撞检测
            hitted_obstacles = pygame.sprite.spritecollide(skier, obstacles, False)
            if hitted_obstacles:
                if hitted_obstacles[0].attribute == "tree" and not hitted_obstacles[0].passed:
                    score -= 50
                    skier.setFall()
                    self.updateFrame(screen, obstacles, skier, score)
                    pygame.time.delay(1000)
                    skier.setForward()
                    speed = [0, 6]
                    hitted_obstacles[0].passed = True
                elif hitted_obstacles[0].attribute == "flag" and not hitted_obstacles[0].passed:
                    score += 10
                    obstacles.remove(hitted_obstacles[0])
            # --更新屏幕
            self.updateFrame(screen, obstacles, skier, score)
            clock.tick(cfg.FPS)
    '''创建障碍物'''
    def createObstacles(self, s, e, num=10):
        obstacles = pygame.sprite.Group()
        locations = []
        for i in range(num):
            row = random.randint(s, e)
            col = random.randint(0, 9)
            location  = [col * 64 + 20, row * 64 + 20]
            if location not in locations:
                locations.append(location)
                attribute = random.choice(['tree', 'flag'])
                image = self.resource_loader.images[attribute]
                obstacle = ObstacleSprite(image, location, attribute)
                obstacles.add(obstacle)
        return obstacles
    '''合并障碍物'''
    def AddObstacles(self, obstacles0, obstacles1):
        obstacles = pygame.sprite.Group()
        for obstacle in obstacles0:
            obstacles.add(obstacle)
        for obstacle in obstacles1:
            obstacles.add(obstacle)
        return obstacles
    '''显示游戏开始界面'''
    def ShowStartInterface(self, screen):
        screen.fill((255, 255, 255))
        tfont = self.resource_loader.fonts['1/5screenwidth']
        cfont = self.resource_loader.fonts['1/20screenwidth']
        title = tfont.render(u'滑雪游戏', True, (255, 0, 0))
        content = cfont.render(u'按任意键开始游戏', True, (0, 0, 255))
        trect = title.get_rect()
        trect.midtop = (self.cfg.SCREENSIZE[0] / 2, self.cfg.SCREENSIZE[1] / 5)
        crect = content.get_rect()
        crect.midtop = (self.cfg.SCREENSIZE[0] / 2, self.cfg.SCREENSIZE[1] / 2)
        screen.blit(title, trect)
        screen.blit(content, crect)
        while True:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    QuitGame()
                elif event.type == pygame.KEYDOWN:
                    return
            pygame.display.update()
    '''显示分数'''
    def showScore(self, screen, score, pos=(10, 10)):
        font = self.resource_loader.fonts['default']
        score_text = font.render("Score: %s" % score, True, (0, 0, 0))
        screen.blit(score_text, pos)
    '''更新当前帧的游戏画面'''
    def updateFrame(self, screen, obstacles, skier, score):
        screen.fill((255, 255, 255))
        obstacles.draw(screen)
        screen.blit(skier.image, skier.rect)
        self.showScore(screen, score)
        pygame.display.update()