2013/06/27 在Taipei.py分享的主題

1. 閒聊Python應用在Game
Server的開發
Eric Chen

2. Agenda
● Python應用在之前的專案中
● Django與REST應用在遊戲開發上
● 面臨的問題與挑戰

3. Before...
● Pure Python (Socket + Epoll)
● Django + PyAMF
● Django + REST

4. Socket vs Web Service
● Socket Server
○ Real Time
■ Player location info.
■ Chat
● Web Service
○ polling

5. REST API
HTTP Method Data operate Description
POST Create Create a resource without
id.
GET Read Get a resource.
PUT Update Update a resource or create
a resource with id if not
existed.
DELETE Delete Delete a resource

6. Framework
● Django
● Django REST framework

7. Why Django REST framework?
Source of photo credit :http://django-rest-framework.org/

8. Example by Puzzle & Dragon
Source of photo credit :http://www.gungho.co.jp/

9. Game flow
選擇關卡 進入戰鬥 卡片編輯
Source of photo credit :http://www.padpadblog.com/2012/11/blog-post_6024.html & http://zh.pad.wikia.com/wiki/Puzzle_%26_Dragons_%E7%BB%B4%
E5%9F%BA
隊伍編輯

10. API
● /api/login/
● /api/players/me/
● /api/stages/
● /api/cards/
● /api/cards/groups/
● etc...

11. Login
models.py
class Player(models.Model):
access_token = models.CharField(max_length=255)
level = models.
exp = models.
money = models
...
serializer.py
class LoginSerializer(serializers.Serializer):
access_token = serializers.CharField()
api.py
class LoginView(APIView):
def post(self, request):
serializer = SnippetSerializer(data=request.DATA)
if not serializer.is_valid():
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
player, created = Player.objects.get_or_create(access_token=access_token)
result = {}
request.session['player_id'] = player.id
return Response(result)

12. Problem
● 資料庫存取次數
● 資料庫延遲
● Application Server 效能問題

13. ● 減少Server端計算
● 修改企劃
● 資料庫分割
● 快取
● NOSQL
● Queue

14. Q&A