first server version

This commit is contained in:
Jonas Weinz 2019-03-10 00:29:52 +01:00
parent 58633bab3d
commit d0c8009834
3 changed files with 339 additions and 1 deletions

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# ultimate_tictactoe_server # ultimate_tictactoe_server
a python server backend for ultimate tic-tac-toe a python server backend for ultimate tic-tac-toe.
communication with the web client is done by a (far from any standard and almost random) json protocol:
**register as player and in game queue:**
```json
{
"type": "register",
"data": {
"id": "<player_id>",
"name": "<player_name>"
}
}
```
response:
```JSON
{
"type": "register_response",
"data": {
"success": true,
"msg": "<additional info e.g. in case of error>"
}
}
```
**message from server that game started**
```json
{
"type": "game_starts",
"data": {
"msg": "...",
"opponent_name": "...",
"is_first_move": true
}
}
```
note: `is_first_move` indicates whether the player or it's opponent begins
**move**
```json
{
"type": "move",
"data": {
"sub_x": "...",
"sub_y": "...",
"x": "...",
"y": "..."
}
}
```
response:
```json
{
"type": "move_response",
"data": {
"success": true,
"msg": "..."
}
}
```
**end game**
```json
{
"type": "end_game",
"data": {
"msg": "..."
}
}
```
(response?)

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game_manager.py Normal file
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#!/usr/bin/env python3
import asyncio
import websockets
import json
player_id_queue = set()
sockets = {}
player_games = {}
async def register_user(id, socket):
if id in player_id_queue:
return False
player_id_queue.add(id)
sockets[id] = socket
await matchmaking()
return True
async def unregister_user(id):
if id in player_id_queue:
player_id_queue.remove(id)
del(sockets[id])
elif id in player_games:
# we have an active game and have to end it
await player_games[id]._on_end_game(id)
del(player_games[id])
async def process_message(id, json):
if id in player_games:
await player_games[id].processPlayerMessage(id, json)
async def create_new_match():
p_a = player_id_queue.pop()
p_b = player_id_queue.pop()
s_a = sockets[p_a]
s_b = sockets[p_b]
del(sockets[p_a])
del(sockets[p_b])
new_game = GameManager(p_a, p_b, p_a, s_a, s_b)
player_games[p_a] = new_game
player_games[p_b] = new_game
await new_game.startMatch()
async def matchmaking():
if len(player_id_queue) < 2:
# we need at least 2 users for that
return
else:
asyncio.ensure_future(create_new_match())
class GameManager(object):
def __init__(self, player_a_id, player_b_id, start_player, socket_a, socket_b):
self.player_a_id = player_a_id
self.player_b_id = player_b_id
self.socket_a = socket_a
self.socket_b = socket_b
self.current_player = start_player
self.game_finished = False
async def startMatch(self):
print("match starts")
start_msg_a = {
'type': 'game_starts',
'data': {
'msg': '...',
'opponent_name': self.player_b_id,
'is_first_move': True
}
}
start_msg_b = {
'type': 'game_starts',
'data': {
'msg': '...',
'opponent_name': self.player_a_id,
'is_first_move': False
}
}
await self.socket_a.send(json.dumps(start_msg_a))
await self.socket_b.send(json.dumps(start_msg_b))
print("start message send to all players")
async def processPlayerMessage(self, player_id, json_str):
if len(json_str) > 4096:
# something is fishy here
print("received strange message from client")
print("received message: " + json_str)
try:
json_dict = json.loads(json_str)
type = json_dict['type']
data = json_dict['data']
if type == "move":
await self._on_move(player_id, data)
elif type == "end_game":
await self._on_end_game(player_id)
except Exception as e:
print("" + str(e) + ": received wrong formated message")
async def _on_move(self, player_id, move_data):
response = {'type': 'move_response'}
response_data = {}
opponent_response = {'type': 'move'}
opponent_response_data = {}
opponent_response_data['sub_x'] = move_data['sub_x']
opponent_response_data['sub_y'] = move_data['sub_y']
opponent_response_data['x'] = move_data['x']
opponent_response_data['y'] = move_data['y']
opponent_response['data'] = opponent_response_data
if player_id == self.current_player:
is_a = (self.player_a_id == player_id)
current_socket = self.socket_a if is_a else self.socket_b
opponent_socket = self.socket_b if is_a else self.socket_a
response_data['success'] = True
response_data['msg'] = "move successful"
response['data'] = response_data
await opponent_socket.send(json.dumps(opponent_response))
await current_socket.send(json.dumps(response))
# switch player
self.current_player = self.player_b_id if is_a else self.player_a_id
else:
print("received move from wrong player")
is_a = (self.player_a_id == player_id)
current_socket = self.socket_a if is_a else self.socket_b
response_data["success"] = False
response_data["msg"] = "not your turn!"
response['data'] = response_data
await current_socket.send(json.dumps(response))
async def _on_end_game(self, player_id):
if self.game_finished:
return
is_a = (self.player_a_id == player_id)
opponent_socket = self.socket_b if is_a else self.socket_a
opponent_response = {'type': 'end_game'}
opponent_response['data'] = {'msg': 'game closed by opponent'}
await opponent_socket.send(json.dumps(opponent_response))
self.game_finished = True

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main.py Normal file
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import asyncio
import websockets
from game_manager import *
async def socket_worker(websocket, path):
registered = False
id = None
print("new connection")
try:
# get first message as register message
raw_msg = await websocket.recv()
msg = json.loads(raw_msg)
if msg['type'] != 'register':
print("got wrong registration")
websocket.close()
return
id = msg['data']['id']
registered = await register_user(id, websocket)
register_response = {
'type': 'register_response', 'data': {
'success': True, 'msg': '...'}}
if not registered:
register_response['data']['success'] = False
await websocket.send(json.dumps(register_response))
websocket.close()
return
await websocket.send(json.dumps(register_response))
print("successful redisterd user " + id)
async for m in websocket:
await process_message(id, m)
except Exception as e:
# TODO: each disconnect is an exception so far
if id is not None:
print("catched exception in worker for user: " + id + ": " + str(e))
else:
print("catched exception in worker for unknown user")
finally:
if registered:
await unregister_user(id)
if id is None:
id = "unknown_user"
print("close connection to user: " + id)
start_server = websockets.serve(socket_worker, 'localhost', 5555)
asyncio.get_event_loop().run_until_complete(start_server)
asyncio.get_event_loop().run_forever()