def recieve(self, server, game):
# recieve all packets
while True:
packet = networking.packet.Packet("client")
try:
data, sender = self.socket.recvfrom(constants.MAX_PACKET_SIZE)
except socket.error:
# recvfrom throws socket.error if there was no packet to read
break
# FIXME: Uncomment these as soon as networking debugging is done. I commented this out because it messed with Traceback.
#try:
packet.unpack(data)
#except:
# # parse error, don't throw exception but print it
# print("Parse error: %s" % sys.exc_info()[1])
# continue # drop packet
# only handle this packet if we know the player
if sender in self.players:
for seq, event in packet.events:
if seq <= self.players[sender].server_acksequence:
# Event has already been processed before, discard
continue
try:
event_handler.eventhandlers[event.eventid](self, game, game.current_state, self.players[sender], event)
if event.eventid == constants.EVENT_PLAYER_DISCONNECT:
# Player disconnected, any further events are useless
break
except KeyError:
# Invalid event; ignore
print("WARNING: Client sent invalid event:", type(event), event.eventid)
# or if someone wants to shake hands
elif (packet.events[0])[1].eventid == constants.EVENT_HELLO:
event = (packet.events[0])[1]
if event.password == server.password:
newplayer = player.Player(self, game, event.name, sender)
newplayer.name = event.name
for player_obj in self.players.values():
if player_obj == newplayer:
self.service_new_player(server, game, newplayer)
else:
join_event = networking.event_serialize.ServerEventPlayerJoin(newplayer.id, newplayer.name)
player_obj.events.append((player_obj.sequence, join_event))
# otherwise drop the packet
else:
continue
try:
# ack the packet
self.players[sender].server_acksequence = packet.sequence
self.players[sender].client_acksequence = packet.acksequence
except KeyError:
# The player has just disconnected, so no-one cares about acksequence
pass
def recieve(self, server, game):
# recieve all packets
while True:
packet = networking.packet.Packet("client")
try:
data, sender = self.socket.recvfrom(constants.MAX_PACKET_SIZE)
except socket.error:
# recvfrom throws socket.error if there was no packet to read
break
# FIXME: Uncomment these as soon as networking debugging is done. I commented this out because it messed with Traceback.
#try:
packet.unpack(data)
#except:
# # parse error, don't throw exception but print it
# print("Parse error: %s" % sys.exc_info()[1])
# continue # drop packet
# only handle this packet if we know the player
if sender in self.players:
for seq, event in packet.events:
if seq <= self.players[sender].server_acksequence:
# Event has already been processed before, discard
continue
try:
event_handler.eventhandlers[event.eventid](self, game, game.current_state, self.players[sender], event)
if event.eventid == constants.EVENT_PLAYER_DISCONNECT:
# Player disconnected, any further events are useless
break
except KeyError:
# Invalid event; ignore
print("WARNING: Client sent invalid event:", type(event), event.eventid)
# or if someone wants to shake hands
elif (packet.events[0])[1].eventid == constants.EVENT_HELLO:
event = (packet.events[0])[1]
if event.password == server.password:
newplayer = player.Player(self, game, event.name, sender)
newplayer.name = event.name
for player_obj in self.players.values():
if player_obj == newplayer:
self.service_new_player(server, game, newplayer)
else:
join_event = networking.event_serialize.ServerEventPlayerJoin(newplayer.id, newplayer.name)
player_obj.events.append((player_obj.sequence, join_event))
# otherwise drop the packet
else:
continue
try:
# ack the packet
self.players[sender].server_acksequence = packet.sequence
self.players[sender].client_acksequence = packet.acksequence
except KeyError:
# The player has just disconnected, so no-one cares about acksequence
pass
def recieve(self, game, client):
# If we haven't received confirmation that we're connected yet, see if we should try again:
if not self.has_connected:
self.connection_timeout_timer -= 1
if self.connection_timeout_timer <= 0:
self.connection_timeout_timer = constants.CLIENT_TIMEOUT
# Send a reminder, in case the first packet was lost
packet = networking.packet.Packet("client")
packet.sequence = self.sequence
packet.acksequence = self.client_acksequence
event = networking.event_serialize.ClientEventHello(client.player_name, client.server_password)
packet.events.append((self.sequence, event))
data = packet.pack()
numbytes = self.socket.sendto(data, self.server_address)
if len(data) != numbytes:
# TODO sane error handling
print("SERIOUS ERROR, NUMBER OF BYTES SENT != PACKET SIZE AT HELLO")
while True:
packet = networking.packet.Packet("server")
try:
data, sender = self.socket.recvfrom(constants.MAX_PACKET_SIZE)
except socket.error:
# recvfrom throws socket.error if there was no packet to read
break
# FIXME: Uncomment these as soon as networking debugging is done. I commented this out because it messed with Traceback.
#try:
packet.unpack(data)
#except:
# # parse error, don't throw exception but print it
# print("Parse error: %s" % sys.exc_info()[1])
# continue # drop packet
# only accept the packet if the sender is the server
if sender == self.server_address:
for seq, event in packet.events:
if seq <= self.client_acksequence:
# Event has already been processed before, discard
continue
event_handler.eventhandlers[event.eventid](client, self, game, event)
# otherwise drop the packet
else:
print("RECEIVED PACKET NOT FROM ACTUAL SERVER ADDRESS:\nActual Server Address:"+str(self.server_address)+"\nPacket Address:"+str(sender))
continue
# ack the packet
self.client_acksequence = packet.sequence
self.server_acksequence = packet.acksequence
# Clear the acked stuff from the history
index = 0
while index < len(self.events):
seq, event = self.events[index]
if seq > self.server_acksequence:
# This (and all the following events) weren't acked yet. We're done.
break
else:
del self.events[index]
index -= 1
index += 1
def recieve(self, game, client):
# If we haven't received confirmation that we're connected yet, see if we should try again:
if not self.has_connected:
self.connection_timeout_timer -= 1
if self.connection_timeout_timer <= 0:
self.connection_timeout_timer = constants.CLIENT_TIMEOUT
# Send a reminder, in case the first packet was lost
packet = networking.packet.Packet("client")
packet.sequence = self.sequence
packet.acksequence = self.client_acksequence
event = networking.event_serialize.ClientEventHello(client.player_name, client.server_password)
packet.events.append((self.sequence, event))
data = packet.pack()
self.socket.sendto(data, self.server_address)
while True:
packet = networking.packet.Packet("server")
try:
data, sender = self.socket.recvfrom(constants.MAX_PACKET_SIZE)
except socket.error:
# recvfrom throws socket.error if there was no packet to read
break
# FIXME: Uncomment these as soon as networking debugging is done. I commented this out because it messed with Traceback.
#try:
packet.unpack(data)
#except:
# # parse error, don't throw exception but print it
# print("Parse error: %s" % sys.exc_info()[1])
# continue # drop packet
# Check whether the packet is even new enough
if packet.sequence <= self.client_acksequence:
print("Old packet:", packet.time, game.current_state.time)
# No need to even consider this packet
return
# First check whether it's a hello packet, if yes handle it differently
if (packet.events[0])[1].eventid == constants.EVENT_HELLO:
# Hello event, full update and snapshot update
for time, event in packet.events:
event_handler.eventhandlers[event.eventid](client, self, game, game.current_state, event)
else:
# Try to get a template state that's as close to the received one as possible.
state = None
if len(game.old_client_states) > 0 and game.current_state.time > packet.time:
if packet.time < game.old_client_states[0].time:
# This packet is extremely old
# This shouldn't actually ever happen
print("Packet received that is not in game.old_client_states!\nPacket time: {0}\ngame.old_client_states: {1}".format(packet.time, [i.time for i in game.old_client_states]))
state = game.old_client_states[0].copy()
state.update_all_objects(game, packet.time - state.time)
# "states" just contains all the states that we can interpolate from
# That includes the old_client_states and current_state
states = game.old_client_states[:]
states.append(game.current_state.copy())
# Now we sort it as a function of it's closeness to time
states.sort(key=lambda x: abs(packet.time - x.time))
# The two first elements of this list will necessarily be those around time
# So now we cut off everything except the first two
states = states[:2]
# And then we sort those normally
states.sort(key=lambda x: x.time)
# And then we interpolate
d_time = (packet.time - states[0].time) * (states[1].time - states[0].time)
if not(0 <= d_time <= 1):
if abs(d_time) > 0.001:
print("This should not happen!\nd_time:{0}\ntime:{1}\nstates[0].time:{2}\nstates[1].time:{3}\n\nold_client_states:{4}\n\n\n".format(d_time, packet.time, states[0].time, states[1].time, [i.time for i in game.old_client_states]))
if d_time < 0:
d_time = 0
if d_time > 1:
d_time = 1
states[0].interpolate(states[0], states[1], d_time)
state = states[0].copy()
else:
# We don't even have any old states, just take current_state
state = game.current_state.copy()
# All old states before this packet are now useless, and all old states after it are wrong
game.old_client_states = []
# only accept the packet if the sender is the server
if sender == self.server_address:
for seq, event in packet.events:
if seq <= self.client_acksequence:
# Event has already been processed before, discard
continue
# First modify state to correspond to the time of the event
state.update_all_objects(game, event.time - state.time)
# process the event
event_handler.eventhandlers[event.eventid](client, self, game, state, event)
# Calculate current latency
self.latency = game.current_state.time - packet.time
# Set the state to the actual packet time and add it to the buffer for rendering
state.update_all_objects(game, packet.time - state.time)
game.old_server_states.append(state.copy())
game.old_client_states.append(state.copy())
if (abs(self.latency) <= constants.MAX_TIME_DESYNC):
# Update it to the current state time and then set it
state.update_all_objects(game, game.current_state.time - state.time)
else:
# Otherwise just let the client jump and correct itself
pass
game.current_state = state.copy()
# otherwise drop the packet
else:
print("RECEIVED PACKET NOT FROM ACTUAL SERVER ADDRESS:\nActual Server Address:"+str(self.server_address)+"\nPacket Address:"+str(sender))
continue
# ack the packet
self.client_acksequence = packet.sequence
self.server_acksequence = packet.acksequence
# Clear the acked stuff from the history
index = 0
while index < len(self.events):
seq, event = self.events[index]
if seq > self.server_acksequence:
# This (and all the following events) weren't acked yet. We're done.
break
else:
del self.events[index]
index -= 1
index += 1
def recieve(self, game, client):
# If we haven't received confirmation that we're connected yet, see if we should try again:
if not self.has_connected:
self.connection_timeout_timer -= 1
if self.connection_timeout_timer <= 0:
self.connection_timeout_timer = constants.CLIENT_TIMEOUT
# Send a reminder, in case the first packet was lost
packet = networking.packet.Packet("client")
packet.sequence = self.sequence
packet.acksequence = self.client_acksequence
event = networking.event_serialize.ClientEventHello(client.player_name, client.server_password)
packet.events.append((self.sequence, event))
data = packet.pack()
numbytes = self.socket.sendto(data, self.server_address)
if len(data) != numbytes:
# TODO sane error handling
print("SERIOUS ERROR, NUMBER OF BYTES SENT != PACKET SIZE AT HELLO")
while True:
packet = networking.packet.Packet("server")
try:
data, sender = self.socket.recvfrom(constants.MAX_PACKET_SIZE)
except socket.error:
# recvfrom throws socket.error if there was no packet to read
break
# FIXME: Uncomment these as soon as networking debugging is done. I commented this out because it messed with Traceback.
#try:
packet.unpack(data)
#except:
# # parse error, don't throw exception but print it
# print("Parse error: %s" % sys.exc_info()[1])
# continue # drop packet
# Check whether the packet is even new enough
if packet.sequence <= self.client_acksequence:
print("Old packet:", packet.time, game.current_state.time)
# No need to even consider this packet
return
# First check whether it's a hello packet, if yes handle it differently
if (packet.events[0])[1].eventid == constants.EVENT_HELLO:
# Hello event, full update and snapshot update
for time, event in packet.events:
event_handler.eventhandlers[event.eventid](client, self, game, game.current_state, event)
else:
# Try to get a template state that's as close to the received one as possible.
state = None
if len(game.old_client_states) > 0 and game.current_state.time > packet.time:
if packet.time < game.old_client_states[0].time:
# This packet is extremely old
# This shouldn't actually ever happen
print("Packet received that is not in game.old_client_states!\nPacket time: {0}\ngame.old_client_states: {1}".format(packet.time, [i.time for i in game.old_client_states]))
state = game.old_client_states[0].copy()
state.update_all_objects(game, packet.time - state.time)
# "states" just contains all the states that we can interpolate from
# That includes the old_client_states and current_state
states = game.old_client_states[:]
states.append(game.current_state.copy())
# Now we sort it as a function of it's closeness to time
states.sort(key=lambda x: abs(packet.time - x.time))
# The two first elements of this list will necessarily be those around time
# So now we cut off everything except the first two
states = states[:2]
# And then we sort those normally
states.sort(key=lambda x: x.time)
# And then we interpolate
d_time = (packet.time - states[0].time) * (states[1].time - states[0].time)
if not(0 <= d_time <= 1):
if abs(d_time) > 0.001:
print("This should not happen!\nd_time:{0}\ntime:{1}\nstates[0].time:{2}\nstates[1].time:{3}\n\nold_client_states:{4}\n\n\n".format(d_time, packet.time, states[0].time, states[1].time, [i.time for i in game.old_client_states]))
if d_time < 0:
d_time = 0
if d_time > 1:
d_time = 1
states[0].interpolate(states[0], states[1], d_time)
state = states[0].copy()
else:
# We don't even have any old states, just take current_state
state = game.current_state.copy()
# All old states before this packet are now useless, and all old states after it are wrong
game.old_client_states = []
# only accept the packet if the sender is the server
if sender == self.server_address:
for seq, event in packet.events:
if seq <= self.client_acksequence:
# Event has already been processed before, discard
continue
# First modify state to correspond to the time of the event
state.update_all_objects(game, event.time - state.time)
# process the event
event_handler.eventhandlers[event.eventid](client, self, game, state, event)
# Calculate current latency
self.latency = game.current_state.time - packet.time
print(abs(self.latency)*1000, "<", constants.MAX_TIME_DESYNC*1000, "Rendering delta: ", game.rendering_time - game.current_state.time)
# Set the state to the actual packet time and add it to the buffer for rendering
state.update_all_objects(game, packet.time - state.time)
game.old_server_states.append(state.copy())
game.old_client_states.append(state.copy())
if (abs(self.latency) <= constants.MAX_TIME_DESYNC):
# Update it to the current state time and then set it
state.update_all_objects(game, game.current_state.time - state.time)
else:
# Otherwise just let the client jump and correct itself
pass
game.current_state = state.copy()
# otherwise drop the packet
else:
print("RECEIVED PACKET NOT FROM ACTUAL SERVER ADDRESS:\nActual Server Address:"+str(self.server_address)+"\nPacket Address:"+str(sender))
continue
# ack the packet
self.client_acksequence = packet.sequence
self.server_acksequence = packet.acksequence
# Clear the acked stuff from the history
index = 0
while index < len(self.events):
seq, event = self.events[index]
if seq > self.server_acksequence:
# This (and all the following events) weren't acked yet. We're done.
break
else:
del self.events[index]
index -= 1
index += 1
