class MultiplayerServerClass(NetworkPacketClass, CardDeckClass):
def __init__(self, ip_port, game_rules):
self.server_data = dict.copy(self.get_network_packet_definition())
self.setup_game_rules_to_server_data(game_rules)
self._dealer = DealerClass(data=self.server_data)
self.mutex = QMutex()
self.conn_player_number = 0
self.conn_players_addresses = [0 for x in range(MAX_CLIENTS)]
self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
self.s.bind(ip_port)
except socket.error as e:
str(e)
self.s.listen(MAX_CLIENTS)
print("Server Started... Waiting for a connection")
thread = threading.Thread(target=self.server_listening_for_new_connections_loop, args=())
thread.start()
def server_listening_for_new_connections_loop(self):
while True:
conn, addr = self.s.accept()
self.conn_players_addresses[self.conn_player_number] = addr # save the connected player info
print(f'SERVER: New Connection Established. Client (C{self.conn_player_number}) from {self.conn_players_addresses[CLIENT_SRV]}.')
thread = threading.Thread(target=self.main_communication_loop, args=(conn, self.conn_player_number))
thread.start()
self.conn_player_number += 1
print(f'SERVER: Active connections: {self.conn_player_number}. ')
def main_communication_loop(self, conn, client_number):
# Handshake message
send_simple_message(conn, client_number)
connected = True
while connected:
try:
# We send 2 messages between client-server.
# First we find the size of the dictionary we want to send, and tell the server to receive that size.
# Second we send the dictionary in string format.
client_data = receive_message_with_size_confirmation(conn)
client_data = transform_into_data(client_data)
while True:
# Try to access Server Data (Thread-Safe)
if self.mutex.tryLock():
# Are we still connected to this player?
if client_data:
self.server_data[client_number][PS_ConnectionStatus] = CONN_STATUS_CONNECTED
else:
self.server_data[client_number][PS_ConnectionStatus] = CONN_STATUS_DISCONNECTED
# Copy the clients data onto the server data.
self.server_update_from_this_player_data_fields(client_data=client_data, client_id=client_number)
if client_number == CLIENT_SRV:
# The server should theoretically loop through communication with all clients
# So if we do the dealer logic only on player0 (DEALER) then we should theoretically
# do the dealer logic only once per update to all other clients.
self._dealer.dealer_evaluate_next_step()
# Send the updated info back to the client:
server_reply = transform_into_string(self.server_data)
# Unlock the server_data_dict for other threads.
self.mutex.unlock()
break
if connected:
send_message_with_size_confirmation(conn, server_reply)
print(f'SERVER: Communication done for C{client_number}.')
except socket.error as e:
print(f'SERVER: main_communication_loop -> {e}')
send_message_with_size_confirmation(conn, MESSAGE_DISCONNECTED)
self.conn_player_number -= 1
conn.close()
break
def setup_game_rules_to_server_data(self, rules):
# 0 gameName = self._win.getGameName()
# 1 startingMoney = self._win.getStartingAmount()
# 2 currency = self._win.getCurrency()
# 3 bigBlind = self._win.getBigBlind()
# 4 blindInterval = self._win.getBlindInterval()
# tpl = (gameName, startingMoney, currency, bigBlind, blindInterval)
for player in range(MAX_CLIENTS):
self.server_data[player][PS_MoneyAvailable] = rules[1]
self.server_data[player][PS_MoneyBoughtIn] = rules[1]
self.server_data[DL_GameName] = str(rules[0])
self.server_data[DL_Currency] = str(rules[2])
self.server_data[DL_BigBlind] = float(rules[3])
def server_update_from_this_player_data_fields(self, client_data, client_id):
self.server_data[client_id][PC_Name] = client_data[client_id][PC_Name]
self.server_data[client_id][PC_Icon] = client_data[client_id][PC_Icon]
self.server_data[client_id][PC_TableSpot] = client_data[client_id][PC_TableSpot]
self.server_data[client_id][PC_BuyInReq] = client_data[client_id][PC_BuyInReq]
self.server_data[client_id][PC_idPlayerAction] = client_data[client_id][PC_idPlayerAction]
self.server_data[client_id][PC_isPlayerPlaying] = client_data[client_id][PC_isPlayerPlaying]
self.server_data[client_id][PC_BetAmount] = client_data[client_id][PC_BetAmount]
self.server_data[client_id][PC_ClientOverwrite] = client_data[client_id][PC_ClientOverwrite]
class RocketSimulator(QtCore.QObject):
R_EARTH = 6371000 # meters
G_0 = -9.80665 # m/s^2 (at sea level)
new_data = QtCore.pyqtSignal(object)
def __init__(self, ticksize, param_file='parameters.json'):
QtCore.QObject.__init__(self)
self.load_data(param_file)
def load_data(self, param_file):
with open(param_file, 'r') as inputf:
self.parameters = json.load(inputf)
# Set imported parameters as properties
for parameter in self.parameters:
setattr(self, parameter, self.parameters[parameter])
# use for threadsafe commnications with the GUI thread
self.mutex = QMutex()
self.atmosphere = Atmosphere()
# TODO Error analysis vs. ticksize
self.ticksize = 0.001
self.time = 0
self.height = self.launch_height
self.velocity = 0
self.acceleration = 0
self.max_height = 0
self.max_velocity = 0
self.max_acceleration = 0
self.mass = self.launch_mass
self.thruster = Thruster()
self.data = {}
self.data['time'] = []
self.data['height'] = []
self.data['velocity'] = []
self.data['acceleration'] = []
def run_simulation(self):
while self.height >= self.launch_height:
self.run_tick()
print(self.max_height, self.max_velocity, self.max_acceleration)
def run_tick(self):
self.height += self.velocity * self.ticksize
self.velocity += self.acceleration * self.ticksize
force = self.thrust_force() + self.drag_force() + self.gravity_force()
self.acceleration = force / self.mass
locked = False
if self.mutex.tryLock(10):
self.new_data.emit([self.time, self.height, self.velocity, self.acceleration])
self.mutex.unlock()
self.data['time'].append(self.time)
self.data['height'].append(self.height)
self.data['velocity'].append(self.velocity)
self.data['acceleration'].append(self.acceleration)
self.update_mass()
self.update_max_values()
self.time += self.ticksize
def drag_force(self):
pressure = self.atmosphere.get_density_by_height(self.height)
# Rocket is heading up
if self.velocity >= 0:
drag_coef = self.rocket_drag_coef
area = self.cross_sectional_area
# Rocket is falling with parachute deployed
else:
drag_coef = self.parachute_drag_coef
area = self.parachute_area
# Drag force is the opposite direction of velocity
if self.velocity > 0:
direction = -1
else:
direction = 1
# TODO use increased parachute area
return (direction * drag_coef * pressure * self.velocity**2 * area ) / 2
def gravity_force(self):
return self.mass * self.get_g_at_alitude(self.height)
def get_g_at_alitude(self, height):
return self.G_0 * ((height + self.R_EARTH) / self.R_EARTH)**2
def thrust_force(self):
if self.time < self.burn_length:
return self.thruster.get_thrust_at_time(self.time)
else:
return 0
def update_mass(self):
if self.time > self.burn_length:
return
else:
self.mass -= (self.propellent_mass / self.burn_length) * self.ticksize
def update_max_values(self):
if self.height > self.max_height:
self.max_height = self.height
if self.velocity > self.max_velocity:
self.max_velocity = self.velocity
if self.acceleration > self.max_acceleration:
self.max_acceleration = self.acceleration
class AppWindow(QDialog):
@staticmethod
def error_window(txt='Unknown Error!'):
msg = QMessageBox()
msg.setIcon(QMessageBox.Critical)
msg.setText("Error")
msg.setInformativeText(txt)
msg.setWindowTitle("Error")
msg.exec_()
def __init__(self):
super().__init__()
self.ui = Ui_Dialog()
self.ui.setupUi(self)
self.canvasMutex = QMutex(
) # protects canvas (probably redundant since I don't use workers)
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.draw_step)
# connect actions
self.ui.drawPushButton.clicked.connect(self.redraw_background)
self.ui.startPushButton.clicked.connect(self.start_presentation)
self.ui.stopPushButton.clicked.connect(self.timer.stop)
self.ui.stepPushButton.clicked.connect(self.on_step_pushed)
self.ui.functionEdit.textChanged.connect(self.set_redraw_needed)
self.ui.x0DoubleSpinBox.valueChanged.connect(self.set_redraw_needed)
self.ui.leftIntervalSpinBox.valueChanged.connect(
self.set_redraw_needed)
self.ui.rightIntervalSpinBox.valueChanged.connect(
self.set_redraw_needed)
self.ui.xyCheckBox.clicked.connect(self.set_redraw_needed)
self.eps = 1e-15
self.itTBD = 0
self.xx = None # x axes - linspace from left
self.gx = None # lambda function g(x)
self.xc = None # current value of x
self.redraw = True # indicates that old values are no longer valid!
self.show()
def set_redraw_needed(self):
self.redraw = True
def start_presentation(self):
if not self.redraw_background():
return
self.itTBD = self.ui.iterationSpinBox.value()
self.timer.start(int(self.ui.delaySpinBox.value() * 1000))
def on_step_pushed(self):
if self.redraw and not self.redraw_background():
return
self.itTBD = 1
self.draw_step()
# should only be called by draw_step()
def reset_drawing(self):
self.timer.stop()
self.itTBD = 0
self.canvasMutex.unlock()
# draws one iteration on graph
def draw_step(self):
if self.canvasMutex.tryLock():
if self.itTBD < 1:
self.reset_drawing()
return
nxc = self.gx(self.xc) # value of g(x_{n+1})
if abs(self.xc - nxc) < self.eps:
print('I am unable to reach better precision so I\'ll stop.')
self.reset_drawing()
return
if nxc < self.ui.leftIntervalSpinBox.value(
) or nxc > self.ui.rightIntervalSpinBox.value():
self.error_window('Out of interval!')
self.reset_drawing()
return
# self.gx(nxc) may reach value out of interval but only on y-axis
# I could also remember its value so I don't have to compute it in next iteration
# but it is so cheap that I don't care
self.ui.myMplCanvas.axes.plot([self.xc, nxc, nxc],
[nxc, nxc, self.gx(nxc)],
r'r--',
linewidth=0.75)
self.ui.myMplCanvas.draw()
self.xc = nxc
self.itTBD -= 1
self.ui.xValueLabel.setText('Current value of x is: %.6f' %
self.xc)
self.canvasMutex.unlock()
def redraw_background(self):
self.gx = lambda x: eval(self.ui.functionEdit.text())
self.xc = self.ui.x0DoubleSpinBox.value()
li = self.ui.leftIntervalSpinBox.value()
ri = self.ui.rightIntervalSpinBox.value()
if li >= ri or self.xc < li or self.xc > ri:
self.error_window('Invalid interval!')
return False
self.xx = np.linspace(self.ui.leftIntervalSpinBox.value(),
self.ui.rightIntervalSpinBox.value(), 10000)
try:
yy = self.gx(self.xx)
except SyntaxError:
self.error_window('Unable to parse g(x)!')
return False
if self.canvasMutex.tryLock():
self.ui.myMplCanvas.clear()
self.ui.myMplCanvas.axes.plot(self.xx, yy, label='g(x)')
if self.ui.xyCheckBox.isChecked():
self.ui.myMplCanvas.axes.plot(self.xx, self.xx, label='y = x')
self.ui.myMplCanvas.draw()
self.redraw = False
self.canvasMutex.unlock()
return True
