I have a very basic server for my Pygame game going, but I don't know if/how I can make the server accessible from clients connecting from different networks. Currently I can connect from the same network, but because I'm using my local IP address for the socket, surely this won't work for connecting from different networks. Here are my four scripts (two of which are just classes):
File server.py
from _thread import *
import pickle
from player import Player
class Server:
def __init__(self):
self.players = [Player(0,0,20,20, (255,0,0)), Player(100,100,20,20,(0,0,255))]
self.numPlayers = 0
ip = (socket.gethostbyname(socket.gethostname()))
print (ip)
port = 5555
self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
self.s.bind((ip, port))
except socket.error as e:
print(e)
def client_thread(self, conn, player):
conn.send(pickle.dumps(self.players[player]))
while True:
try:
data = pickle.loads(conn.recv(2048))
if isinstance(data, Player):
self.players[player] = data
playersToSend = []
for each in range (0,len(self.players)):
if each != player:
playersToSend.append(self.players[each])
conn.send(pickle.dumps(playersToSend))
if data == "quit":
break
if not data:
print ("Disconnected")
break
except EOFError as e:
break
print ("Lost Connection")
self.numPlayers -= 1
serv = Server()
serv.s.listen(20)
print("Waiting for connection, server started")
while True:
conn, addr = serv.s.accept()
print (f"Connection found from {addr}")
start_new_thread(serv.client_thread, (conn,serv.numPlayers))
serv.numPlayers += 1
File client.py
import pygame
from pygame import QUIT
from Network import Network
pygame.init()
win = pygame.display.set_mode((500,500))
n = Network() # initiate the network object
playerPos = (n.p.x, n.p.y) # connect to the server and get the starting position
print (playerPos[0],playerPos[1])
FPS = pygame.time.Clock()
def move():
keys = pygame.key.get_pressed()
if keys[pygame.K_UP]: n.p.y -= n.p.velocity
if keys[pygame.K_DOWN]: n.p.y += n.p.velocity
if keys[pygame.K_RIGHT]: n.p.x += n.p.velocity
if keys[pygame.K_LEFT]: n.p.x -= n.p.velocity
n.p.update()
while True:
for event in pygame.event.get():
if event.type == QUIT:
n.send("quit")
pygame.quit()
exit(0)
move()
players = [] # reset/set the list
players = n.send(n.p) #send off the player to the server, to receiver the other player
win.fill((255,255,255))
for each in players:
pygame.draw.rect(win, (255,0,0), pygame.Rect(each.rect))
pygame.draw.rect(win, (0,0,255), pygame.Rect(n.p.rect))
pygame.display.update()
FPS.tick(60)
File network.py
import pickle
class Network:
def __init__(self):
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.ip = socket.gethostbyname(socket.gethostname())
self.port = 5555
self.addr = (self.ip, self.port)
self.p = self.connect()
def connect(self):
self.sock.connect(self.addr)
p = pickle.loads(self.sock.recv(2048))
return p
def send(self, data):
self.sock.sendall(pickle.dumps(data))
return pickle.loads(self.sock.recv(2048))
File player.py
import pickle
class Player():
def __init__(self, x, y, width, height, colour):
self.x, self.y = x, y
self.width, self.height = width, height
self.colour = colour
self.velocity = 3
self.rect = (x, y, width, height)
def update(self):
self.rect = (self.x, self.y, self.width, self.height)
def draw(self, win):
pygame.draw.rect(win, self.colour, self.rect)
