Python脚本: Diablo3排名前1000位玩家英雄使用的技能统计

  说实在的个人对游戏并没有多大的兴趣,但唯独对暴雪的Diablo系列很有感情,去年年初开始玩Diablo3,断断续续,感觉最麻烦的是选择技能,每次版本更新可能都有更优的build,这对于我这样的业余玩家来说可不是件好事,好在宏伟秘境后有了天梯,借鉴排名在前的高级玩家们build总没错,于是花了点时间写了这个脚本。

Diablo3

  脚本只是统计了主动技能、被动技能和传奇宝石的使用情况,理论上统计其它如装备等信息也是一样简单可行的,但Diablo装备的生成机制使得统计这个没有多大意义,相同的装备属性可能各有优劣,难以比较,而且某些装备坑爹的掉率也不是你想要就能有的。

  题外话,不得不说Python太适合写这类功能相对简单的脚本了,一个字:快。

# -*- coding: utf-8 -*-
"""
Diablo3 排名前1000玩家英雄使用技能统计

python diablo.py help
python diablo.py [barbarian|crusader|demon-hunter|monk'|witch-doctor|wizard]

默认使用的是亚服的数据,如果需要美服或欧服,更改`_rank_page`和`_api`变量地址即可

Copyright (c) 2015 JinnLynn <eatfishlin@gmail.com>
Released under the terms of the MIT license.
"""
from __future__ import unicode_literals, print_function, absolute_import
import os
import sys
import urllib2
import json
import re

__version__ = '1.0.0'
__author__ = 'JinnLynn <eatfishlin@gmail.com>'
__license__ = 'The MIT License'
__copyright__ = 'Copyright 2015 JinnLynn'

# 排名页面
_rank_page = 'http://tw.battle.net/d3/zh/rankings/'
# api
_api = 'http://tw.battle.net/api/d3/'
_api_profile = os.path.join(_api, 'profile')
_api_data = os.path.join(_api, 'data')

_hero_classes = {
    'barbarian': '野蠻人', 'crusader': '聖教軍', 'demon-hunter': '狩魔獵人',
    'monk': '武僧', 'witch-doctor': '巫醫', 'wizard': '秘術師'}

_retry = 5

_hero_class = ''
_active_skills = {}
_passive_skills = {}
_unique_gems = {}


def _clear_output(msg=''):
    sys.stdout.write('\r{:30}'.format(' '))
    sys.stdout.write('\r{}'.format(msg))
    sys.stdout.flush()


def _process(stated, total):
    msg = '英雄数据分析中... {}/{}'.format(stated, total)
    _clear_output(msg)


def _get(url, is_json=True):
    # print('GET: ', url)
    retry = 5 if _retry < 1 else _retry
    while retry > 0:
        try:
            req = urllib2.urlopen(url.encode('utf8'), timeout=10)
            return json.load(req) if is_json else req.read()
        except KeyboardInterrupt, e:
            raise e
        except Exception, e:
            retry -= 1
            # print('retry', retry, e)
            # raise e


def _api_url(*args, **kwargs):
    slash = kwargs.get('slash', False)
    args = [unicode(arg) for arg in args]
    url = os.path.join(*args).rstrip('/')
    return url + '/' if slash else url


def get_era():
    req = urllib2.urlopen(_rank_page)
    return req.geturl().split('/')[-2]


def get_rank_page_url(era):
    url_part = 'rift-'
    if _hero_class == 'demon-hunter':
        url_part += 'dh'
    elif _hero_class == 'witch-doctor':
        url_part += 'wd'
    else:
        url_part += _hero_class
    return os.path.join(_rank_page, 'era', era, url_part)


def fetch_rank_list():
    tags = []
    try:
        _clear_output('获取当前游戏纪元...')
        era = get_era()
        _clear_output('获取当前排名前1000的玩家...')
        url = get_rank_page_url(era)
        html = _get(url, is_json=False)
        # re parse
        lst = re.findall(
            r"a href=\"(.*)\" title=.*class=\"icon-profile link-first\">",
            html.decode('utf8'),
            re.UNICODE)
        # BeautifulSoup parse
        # import bs4
        # soup = bs4.BeautifulSoup(html)
        # lst = soup.select('#ladders-table tbody tr .battletag a')['href']
        for item in lst:
            try:
                tags.append(item.split('/')[-2])
            except:
                pass
    except Exception, e:
        print('fetch rank list fail. {}'.format(_rank_page))
        raise e
    return tags


def get_hero(player_tag):
    url = _api_url(_api_profile, player_tag, slash=True)
    data = _get(url)
    hero_selected = None
    for hero in data.get('heroes', []):
        if hero['class'] != _hero_class:
            continue
        last_updated = hero_selected['last-updated']
        # 最近使用的英雄
        if hero_selected is None or last_updated < hero['last-updated']:
            hero_selected = hero
    if not hero_selected:
        raise Exception('{} hero missing.'.format(player_tag))
    url = _api_url(_api_profile, player_tag, 'hero', hero_selected['id'])
    return _get(url)


# 主动技能符文
def stat_active_skill_rune(skill_slug, rune):
    global _active_skills
    if not rune:
        return
    slug = rune.get('slug')
    if slug in _active_skills[skill_slug]['rune']:
        _active_skills[skill_slug]['rune'][slug]['count'] += 1
    else:
        _active_skills[skill_slug]['rune'][slug] = {
            'count': 1,
            'name': rune.get('name')
        }


# 主动技能
def stat_active_skill(active):
    global _active_skills
    slug = active.get('skill', {}).get('slug')
    # d3 API 返回的数据中可能存在空的数据
    if not slug:
        return
    if slug in _active_skills:
        _active_skills[slug]['count'] += 1
    else:
        _active_skills[slug] = {
            'count': 1,
            'name': active.get('skill').get('name'),
            'rune': {}
        }
    stat_active_skill_rune(slug, active.get('rune'))


# 被动技能
def stat_passive_skill(passive):
    global _passive_skills
    slug = passive.get('skill', {}).get('slug')
    # d3 API 返回的数据中可能存在空的数据
    if not slug:
        return
    if slug in _passive_skills:
        _passive_skills[slug]['count'] += 1
    else:
        _passive_skills[slug] = {
            'count': 1,
            'name': passive.get('skill').get('name')
        }


def stat_unique_gem(items):
    global _unique_gems

    def get_gem(tooltip):
        if not tooltip:
            return None, None
        url = _api_url(_api_data, tooltip)
        data = _get(url)
        gems = data.get('gems')
        if not gems:
            return None, None
        gem = gems[0].get('item', {})
        return gem.get('id'), gem.get('name')

    if not items:
        return

    lst = [items.get(s, {}) for s in ['leftFinger', 'rightFinger', 'neck']]
    for tooltip in [d.get('tooltipParams', None) for d in lst]:
        id_, name = get_gem(tooltip)
        if not id_:
            continue
        if id_ in _unique_gems:
            _unique_gems[id_]['count'] += 1
        else:
            _unique_gems[id_] = {
                'count': 1,
                'name': name
            }


def stat(hero):
    global _active_skills, _passive_skills

    map(stat_active_skill, hero.get('skills', {}).get('active', []))
    map(stat_passive_skill, hero.get('skills', {}).get('passive', []))

    items = hero.get('items', {})
    stat_unique_gem(items)


def output(hero_stated, hero_stat_failed):
    def sort(data, count=10):
        d = sorted(data.items(), key=lambda d: d[1]['count'], reverse=True)
        return d if count <= 0 else d[0:count]

    _clear_output()

    # print('======')
    # print(hero_stated, hero_stat_failed)
    # print('======')
    # pprint(_active_skills)
    # print('======')
    # pprint(_passive_skills)
    # print('======')
    # pprint(_unique_gems)
    # pprint(_active_skills.items())
    # print('======')

    print('\n=== RESULT ===\n')
    print('统计英雄数\n')
    print('  成功: {} 失败: {}\n'.format(hero_stated, hero_stat_failed))

    print('主动技能使用排名: ')
    for _, d in sort(_active_skills):
        runes = []
        for _, r in sort(d.get('rune', {})):
            runes.append('{name}[{count}]'.format(**r))
        d.update({'rune_rank': ', '.join(runes)})
        print('  {name}[{count}]: {rune_rank}'.format(**d))
    print()

    print('被动技能使用排名: ')
    for _, d in sort(_passive_skills):
        print('  {name}[{count}]'.format(**d))
    print()

    print('传奇宝石使用排名: ')
    for _, d in sort(_unique_gems):
        print('  {name}[{count}]'.format(**d))
    print()


def prepare():
    global _hero_class

    def print_hc():
        print('仅支持以下英雄类型, 默认 demon-hunter:\n')
        for c, n in _hero_classes.items():
            print(c, ':', n)

    if len(sys.argv) == 1:
        _hero_class = 'demon-hunter'
    elif len(sys.argv) > 2:
        sys.exit('参数错误')
    else:
        arg = sys.argv[1]
        if arg == 'help':
            print_hc()
            print('\nTips: 运行中可随时Ctrl+C终止以获得已统计的数据结果')
            sys.exit()
        elif arg not in _hero_classes:
            print_hc()
            sys.exit()
        else:
            _hero_class = arg


def main():
    prepare()
    print('待分析的英雄类型:', _hero_classes[_hero_class])

    hero_stated = 0
    hero_stat_failed = 0
    try:
        tags = fetch_rank_list()
        if not tags:
            raise Exception('parse battle.net rank page fail.')
    except Exception, e:
        print('error,', e)
        sys.exit()

    total = len(tags)

    for tag in tags:
        try:
            hero = get_hero(tag)
            if not hero:
                raise Exception('no hero data')
            stat(hero)
            hero_stated += 1
            _process(hero_stated, total)
        except KeyboardInterrupt:
            break
        except Exception, e:
            # print('Fail: ', tag, e, hero)
            hero_stat_failed += 1

    output(hero_stated, hero_stat_failed)


if __name__ == '__main__':
    main()