forked from karki-minma/elevator-sim
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elevator.py
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elevator.py
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from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String, Boolean, ForeignKey
from sqlalchemy.orm import relationship, backref
from sqlalchemy.orm import sessionmaker
from queue import Queue
import random
import re
order = Queue()
coordinates = []
stops = []
engine = create_engine('sqlite:///:memory:', echo=False)
Base = declarative_base()
class Floor(Base):
__tablename__ = 'floor'
id = Column(Integer, primary_key=True, autoincrement=True)
probability = Column(Integer)
density = Column(Integer)
def __repr__(self):
return 'Floor: %i' %self.id
class Passenger(Base):
__tablename__ = 'passenger'
id = Column(Integer, primary_key=True, autoincrement=True)
origin_floor_id = Column(Integer, ForeignKey("floor.id"))
destination_floor_id = Column(Integer, ForeignKey("floor.id"))
origin_floor = relationship("Floor", foreign_keys=[origin_floor_id])
destination_floor = relationship("Floor", foreign_keys=[destination_floor_id])
start = Column(Integer, default=0)
stop = Column(Integer, default=0)
waiting_time = Column(Integer, default=0)
direction = Column(String)
in_elevator = Column(Boolean, default=False)
finished = Column(Boolean, default=False)
def __repr__(self):
return 'Passenger: %s' %self.direction
class Elevator(Base):
__tablename__ = 'elevator'
id = Column(Integer, primary_key=True, autoincrement=True)
direction = Column(String, default='UP')
floor = Column(Integer, default=1)
clock = Column(Integer, default=0)
max_passengers = Column(Integer)
speed = Column(Integer, default=3)
stopped = Column(Boolean, default=True)
status = Column(Integer, default=0)
def move(self):
self.clock += 1
print '%6i %7s %8i %8s ' %(self.clock, 'M', self.floor, self.direction) , stops_to_string(stops) , ' ' , order.all()
self.clock += 1
print '%6i %7s %8i %8s ' %(self.clock, 'M', self.floor, self.direction) , stops_to_string(stops) , ' ' , order.all()
self.clock += 1
print '%6i %7s %8i %8s ' %(self.clock, 'M', self.floor, self.direction) , stops_to_string(stops) , ' ' , order.all()
for passenger in session.query(Passenger).filter(Passenger.finished==False and Passenger.in_elevator==False):
passenger.waiting_time += 3
if elevator.direction == 'UP':
self.floor += 1
elif elevator.direction == 'DOWN':
self.floor -= 1
def move_to(self, floor):
time = 0
if self.floor < floor:
while self.floor != floor:
self.floor += 1
time += self.speed
for i in range(0, self.speed):
self.clock += 1
print '%6i %7s %8i %8s ' %(self.clock, 'MT', self.floor, self.direction) , stops_to_string(stops) , ' ' , order.all()
elif self.floor > floor:
while self.floor != floor:
self.floor -= 1
time += self.speed
for i in range(0, self.speed):
self.clock += 1
print '%6i %7s %8i %8s ' %(self.clock, 'MT', self.floor, self.direction) , stops_to_string(stops) , ' ' , order.all()
for passenger in session.query(Passenger).filter(Passenger.finished==False and Passenger.in_elevator==False):
passenger.waiting_time += 3
return self.floor, time
def change_direction(self):
if elevator.direction == 'UP':
elevator.direction = 'DOWN'
elif elevator.direction == 'DOWN':
elevator.direction = 'UP'
def tick(self):
elevator.clock += 1
print '%6i %7s %8i %8s ' %(self.clock, 'N', self.floor, self.direction) , stops_to_string(stops) , ' ' , order.all()
Session = sessionmaker(bind=engine)
Base.metadata.create_all(engine)
session = Session()
a = Floor(id=1, probability=10, density = 6)
b = Floor(id=2, probability=3, density = 2)
c = Floor(id=3, probability=3, density = 2)
d = Floor(id=4, probability=3, density = 2)
e = Floor(id=5, probability=3, density = 2)
f = Floor(id=6, probability=3, density = 2)
elevator_object = Elevator()
session.add_all([a,b,c,d,e,f])
session.add(elevator_object)
# psg = Passenger(current_floor_id=1, destination_floor_id=1, waiting_time=0, direction='UP', waiting=True)
# session.add(psg)
session.commit()
session.flush()
def load_unload_passengers(floor):
if floor in stops:
if session.query(Passenger).filter(Passenger.origin_floor_id):
pass
def generate_passengers(sec):
p = []
count = 0
tmp_list = []
for t in range(0, sec):
for passenger in session.query(Passenger).filter(Passenger.finished==False and Passenger.in_elevator==False):
passenger.waiting_time += 1
f_l = (session.query(Floor).all())
for floor in sorted(f_l, key=lambda *args: random.random()) :
z = 0
for x in range(0,floor.density - 1):
y = random.randint(0,99)
if y <= floor.probability:
c_f = floor.id
d_f = 0
while d_f == 0:
tmp = random.randint(1,6)
if tmp != c_f:
d_f = tmp
if c_f < d_f:
direction = 'UP'
elif c_f > d_f:
direction = 'DOWN'
tmp = Passenger(origin_floor_id = c_f, destination_floor_id=d_f, direction=direction, waiting_time=0, start=elevator.clock, in_elevator=False)
session.add(tmp)
session.commit()
d = 'D' if direction == 'DOWN' else 'U'
if not order.has('%i%s' %(c_f,d)):
order.enqueue('%i%s' %(c_f,d))
# stops.append(d_f)
order.coordinate(c_f, d_f)
z = z + 1
count = count + 1
p.append(z)
return p, count
elevator = session.query(Elevator).all()[0]
def get_stops(stops=[]):
for passenger in session.query(Passenger).filter_by(in_elevator=True, finished=False):
if passenger.destination_floor_id not in stops:
stops.append(passenger.destination_floor_id)
if elevator.direction == 'DOWN':
rev = True
else:
rev = False
stops.sort(reverse=rev)
return stops
def stops_to_string(stops):
string = '|'
for i in range(0,6):
try:
s = stops[i]
string += ' %i |' %s
except:
string += ' - |'
return string
def clean_coordinates():
for passenger in session.query(Passenger).filter_by(finished=True):
order.rem_coordinate(passenger.origin_floor_id, passenger.destination_floor_id)
elevator.clock = 0
while elevator.clock <= 120:
stops = []
elevator.tick()
b, count = generate_passengers(1)
if order.size() > 0:
n_r = order.get_next()
r_f = int(n_r[0])
print '-------------------------------------------------------------------------------------------'
print order.all()
print 'Next request : %s --> From Floor %i going %s' %(n_r, r_f, 'UP' if n_r[1] == 'U' else 'DOWN')
clean_coordinates()
print order.get_coordinates()
next_request = order.dequeue()
request_floor = int(next_request[0])
elevator.direction = 'UP' if next_request[1] == 'U' else 'DOWN'
print '-------------------------------------------------------------------------------------------'
print ' Timer Section Elevator Elevator Next Next in '
print ' (secs) (A,B,C) Floor Going Stops Queue '
print ' ------ ------- -------- -------- -------------------------- ---------'
current, time = elevator.move_to(request_floor)
clean_coordinates()
for passenger in session.query(Passenger).filter_by(origin_floor_id = request_floor,direction = elevator.direction):
passenger.in_elevator = True
b, c = generate_passengers(time)
stops = get_stops()
# print '%6i %7s %8i %8s ' %(elevator.clock, 'A', elevator.floor, elevator.direction) , stops_to_string(stops) , ' ' , order.all()
while len(stops) != 0:
elevator.move()
clean_coordinates()
if elevator.floor in stops:
clean_coordinates()
stops.remove(elevator.floor)
# print 'B', stops, elevator.direction, elevator.floor, order.all()
# print '%6i %7s %8i %8s ' %(elevator.clock, 'B', elevator.floor, elevator.direction) , stops_to_string(stops) , ' ' , order.all()
for passenger in session.query(Passenger).filter_by(destination_floor_id = elevator.floor):
passenger.finished = True
passenger.stop = passenger.start + passenger.waiting_time - 2
for passenger in session.query(Passenger).filter_by(origin_floor_id = elevator.floor, direction = elevator.direction):
passenger.in_elevator = True
if order.has('%i%s' %(passenger.origin_floor_id,passenger.direction[0])):
order.remove('%i%s' %(passenger.origin_floor_id,passenger.direction[0]))
stops = get_stops(stops)
# print 'C', stops, elevator.direction, elevator.floor, order.all()
# print '%6i %7s %8i %8s ' %(elevator.clock, 'C', elevator.floor, elevator.direction) , stops_to_string(stops) , ' ' , order.all()
for passenger in session.query(Passenger).filter_by(finished=True):
print passenger.origin_floor, passenger.destination_floor, passenger.waiting_time, (passenger.start, passenger.stop)