class Simulator:
world: World
actors: List[Actor]
def __init__(self):
self.world = World(c.DIMENSIONS)
self.actors = []
for _ in range(c.FOOD_PLACES):
self.world.sample().food = c.FOOD_MAX
for i in c.HOME_RANGE:
for j in c.HOME_RANGE:
ant = Ant(Point(i, j), random.randint(0, 7))
self.world[i, j].ant = ant
self.world[i, j].home = True
self.actors.append(Actor(self.world, ant))
def iterate(self):
for actor in self.actors:
optimizer = Optimizer(actor.here, actor.nearby_places)
if actor.foraging:
action = optimizer.seek_food()
else:
action = optimizer.seek_home()
if action == Action.DROP:
actor.drop_food()
actor.mark_food_trail()
actor.turn(4)
elif action == action.TAKE:
actor.take_food()
actor.mark_home_trail()
actor.turn(4)
elif action == Action.MOVE:
actor.move()
elif action == Action.LEFT:
actor.turn(-1)
elif action == Action.RIGHT:
actor.turn(1)
else:
raise ValueError(f"{action} is not a valid action")
self.evaporate()
def evaporate(self):
for cell, point in self.world.each():
cell.home_pheromone *= c.EVAP_RATE
if cell.home_pheromone <= 1e-2:
cell.home_pheromone = 0.
cell.food_pheromone *= c.EVAP_RATE
if cell.food_pheromone <= 1e-2:
cell.food_pheromone = 0.
def __init__(self):
self.world = World(c.DIMENSIONS)
self.actors = []
for _ in range(c.FOOD_PLACES):
self.world.sample().food = c.FOOD_MAX
for i in c.HOME_RANGE:
for j in c.HOME_RANGE:
ant = Ant(Point(i, j), random.randint(0, 7))
self.world[i, j].ant = ant
self.world[i, j].home = True
self.actors.append(Actor(self.world, ant))
def __init__(self,
rules_name,
player_names,
map_,
initial_zombies=0,
minimum_zombies=0,
docker_isolator=False,
debug=False,
isolator_port=8000,
use_basic_icons=False,
use_arduino=False,
arduino_device='/dev/ttyACM0',
arduino_bauds=9600):
self.players = []
self.rules_name = rules_name
self.rules = get_creator('rules.' + rules_name)(self)
self.map = map_
self.minimum_zombies = minimum_zombies
self.docker_isolator = docker_isolator
self.isolator_port = isolator_port
self.debug = debug
self.use_basic_icons = use_basic_icons
self.use_arduino = use_arduino
self.arduino_device = arduino_device
self.arduino_bauds = arduino_bauds
self.world = World(self.map.size, debug=debug)
for thing in self.map.things:
self.world.spawn_thing(thing)
if docker_isolator:
from isolation.players_client import create_player_client
self.players = [
create_player_client(name, rules_name, self.map.objectives,
self.isolator_port)
for name in player_names
]
else:
self.players = [
create_player(name, rules_name, self.map.objectives)
for name in player_names
]
self.spawn_players()
self.spawn_zombies(initial_zombies)
if self.use_arduino:
self.initialize_arduino()
def __init__(self, rules_name, player_names, size, map_file=None,
player_spawns=None, zombie_spawns=None, objetives=None,
initial_zombies=0, minimum_zombies=0, docker_isolator=False,
debug=False, isolator_port=8000):
self.players = []
self.rules_name = rules_name
self.rules = get_creator('rules.' + rules_name)(self)
self.player_spawns = player_spawns
self.zombie_spawns = zombie_spawns
self.objetives = objetives
self.minimum_zombies = minimum_zombies
self.docker_isolator = docker_isolator
self.isolator_port = isolator_port
self.debug = debug
self.world = World(size, debug=debug)
if map_file is not None:
self.import_map(map_file)
if docker_isolator:
from isolation.players_client import create_player_client
self.players = [create_player_client(name, rules_name, objetives,
self.isolator_port)
for name in player_names]
else:
self.players = [create_player(name, rules_name, objetives)
for name in player_names]
self.spawn_players()
self.spawn_zombies(initial_zombies)
def make_world(self):
world = World()
world.num_UAVs = 2
world.num_landmarks = 30 # 50
world.UAVs = [UAV() for i in range(world.num_UAVs)]
world.association = []
world.probability_LoS = 1 / (1 + A)
for i, uav in enumerate(world.UAVs):
uav.name = 'UAV %d'.format(i)
uav.id = i
uav.size = 10
uav.state.energy = Energy
# # 列表形式的landmarks
# world.landmarks = [Landmark() for i in range(world.num_landmarks)]
# for i, landmark in enumerate(world.landmarks):
# landmark.name = 'landmark %d'.format(i)
# landmark.id = i
# landmark.size = 10
# 字典形式的landmarks
for i in range(world.num_landmarks):
dic = {str(i): Landmark()}
world.landmarks.update(dic)
for i, landmark in enumerate(world.landmarks.values()):
landmark.name = 'landmark %d'.format(i)
landmark.id = i
landmark.size = 5
self.reset_world(
world) # 这里不reset会导致MultiUAVEnv中init中获得observation维度报错
return world
def run_game(self):
mainloop = True
on_load = True
while mainloop:
pygame.time.wait(Globals.WAIT_TIME)
flags_n_key = Funcs.event_handler(pygame.event.get())
if not flags_n_key[0] & Globals.K_NONE or on_load:
if flags_n_key[0] & Globals.K_QUIT:
World.save_world(self.world)
pygame.quit()
sys.exit(0)
if flags_n_key[0] & Globals.E_RESIZE:
self.screen = pygame.display.set_mode(flags_n_key[1], pygame.RESIZABLE)
self.render_map_x = self.screen.get_width() // Globals.FONT_X // 2
self.render_map_y = self.screen.get_height() // Globals.FONT_Y
self.screen.fill(Globals.BG_COLOR)
if on_load:
self.objects.clear()
self.draw_queue.clear()
self.screen.fill(Globals.BG_COLOR)
if self.link == 'main_menu':
#Main_menu.load_menu(self)
pass
if self.link == 'continue':
self.link = 'game'
self.world = World.load_world()
g.load_game(self)
elif self.link == 'game':
Main_menu.text_screen(self, 'generating...', (255, 255, 255))
pygame.display.flip()
self.world = World.World(Globals.FIELD_NUM_X, Globals.FIELD_NUM_Y)
g.load_game(self)
on_load = False
self.link, on_load = self.scenes[self.link](self, flags_n_key)
Graphics.draw_all(self)
pygame.display.flip()
def make_world(self):
world = World()
# set any world properties first
world.dim_c = 2
num_good_agents = 1
num_adversaries = 2
num_agents = num_adversaries + num_good_agents
# add agents
world.agents = [Agent() for i in range(num_agents)]
for i, agent in enumerate(world.agents):
agent.name = 'agent %d' % i
agent.survived = True
# agent.game_time = 0
agent.leader = True if i == 0 else False
# agent.silent = True if i > 0 else False
agent.silent = True
agent.adversary = True if i < num_adversaries else False
agent.accel = 1 if agent.adversary else 0.5
agent.max_speed = 4 if agent.adversary else 2.5
self.reset_world(world)
return world
def __init__(self, rules_name, player_names, map_, initial_zombies=0,
minimum_zombies=0, docker_isolator=False, debug=False,
isolator_port=8000, use_basic_icons=False, use_arduino=False,
arduino_device='/dev/ttyACM0', arduino_bauds=9600):
self.players = []
self.rules_name = rules_name
self.rules = get_creator('rules.' + rules_name)(self)
self.map = map_
self.minimum_zombies = minimum_zombies
self.docker_isolator = docker_isolator
self.isolator_port = isolator_port
self.debug = debug
self.use_basic_icons = use_basic_icons
self.use_arduino = use_arduino
self.arduino_device = arduino_device
self.arduino_bauds = arduino_bauds
self.world = World(self.map.size, debug=debug)
for thing in self.map.things:
self.world.spawn_thing(thing)
if docker_isolator:
from isolation.players_client import create_player_client
self.players = [create_player_client(name, rules_name,
self.map.objetives,
self.isolator_port)
for name in player_names]
else:
self.players = [create_player(name, rules_name,
self.map.objetives)
for name in player_names]
self.spawn_players()
self.spawn_zombies(initial_zombies)
if self.use_arduino:
self.arduino_serial = Serial(self.arduino_device,
self.arduino_bauds)
class Game(object):
"""An instance of game controls the flow of the game.
This includes player and zombies spawning, game main loop, deciding when
to stop, importing map data, drawing each update, etc.
"""
def __init__(self,
rules_name,
player_names,
map_,
initial_zombies=0,
minimum_zombies=0,
docker_isolator=False,
debug=False,
isolator_port=8000,
use_basic_icons=False,
use_arduino=False,
arduino_device='/dev/ttyACM0',
arduino_bauds=9600):
self.players = []
self.rules_name = rules_name
self.rules = get_creator('rules.' + rules_name)(self)
self.map = map_
self.minimum_zombies = minimum_zombies
self.docker_isolator = docker_isolator
self.isolator_port = isolator_port
self.debug = debug
self.use_basic_icons = use_basic_icons
self.use_arduino = use_arduino
self.arduino_device = arduino_device
self.arduino_bauds = arduino_bauds
self.world = World(self.map.size, debug=debug)
for thing in self.map.things:
self.world.spawn_thing(thing)
if docker_isolator:
from isolation.players_client import create_player_client
self.players = [
create_player_client(name, rules_name, self.map.objectives,
self.isolator_port)
for name in player_names
]
else:
self.players = [
create_player(name, rules_name, self.map.objectives)
for name in player_names
]
self.spawn_players()
self.spawn_zombies(initial_zombies)
if self.use_arduino:
self.initialize_arduino()
def initialize_arduino(self):
'''Initialize serial connection with arduino screen.'''
from serial import Serial
self.arduino_serial = Serial(self.arduino_device, self.arduino_bauds)
def spawn_players(self):
"""Spawn players using the provided player create functions."""
self.world.spawn_in_random(self.players, self.map.player_spawns)
def spawn_zombies(self, count):
"""Spawn N zombies in the world."""
zombies = [Zombie() for _ in range(count)]
self.world.spawn_in_random(zombies,
self.map.zombie_spawns,
fail_if_cant=False)
def position_draw(self, position):
"""Get the string to draw for a given position of the world."""
# decorations first, then things over them
thing = (self.world.things.get(position)
or self.world.decoration.get(position))
if thing is not None:
if self.use_basic_icons:
icon = thing.icon_basic
else:
icon = thing.icon
return colored(icon, thing.color)
else:
return u' '
def play(self, frames_per_second=2.0):
"""Game main loop, ending in a game result with description."""
while True:
self.world.step()
# maintain the flow of zombies if necessary
zombies = [
thing for thing in self.world.things.values()
if isinstance(thing, Zombie)
]
if len(zombies) < self.minimum_zombies:
self.spawn_zombies(self.minimum_zombies - len(zombies))
self.draw()
if self.debug:
if sys.version_info > (3, ):
input()
else:
raw_input()
else:
time.sleep(1.0 / frames_per_second)
if self.rules.game_ended():
won, description = self.rules.game_won()
if self.use_arduino:
if won:
self.arduino('g', True) # "gwin!!"
else:
self.arduino('l', True) # lose
print('')
if won:
print(colored(u'WIN! ', 'green'))
else:
print(colored(u'GAME OVER ', 'red'))
print(description)
return won, description
def arduino(self, data, add_end_chars=False):
"""Send an order to the arduino screen."""
if add_end_chars:
data = data + chr(1) * 2
self.arduino_serial.write(data)
def draw(self):
"""Draw the world."""
screen = ''
# print the world
screen += '\n'.join(u''.join(
self.position_draw((x, y)) for x in range(self.world.size[0]))
for y in range(self.world.size[1]))
# game stats
screen += '\nticks: %i deaths: %i' % (self.world.t, self.world.deaths)
# print player stats
players = sorted(self.players, key=lambda x: x.name)
for player in players:
try:
weapon_name = player.weapon.name
except:
weapon_name = u'unarmed'
if player.life > 0:
# a small "health bar" with unicode chars, from 0 to 10 chars
life_chars_count = int((10.0 / player.MAX_LIFE) * player.life)
life_chars = life_chars_count * u'\u2588'
no_life_chars = (10 - life_chars_count) * u'\u2591'
life_bar = u'\u2665 %s%s' % (life_chars, no_life_chars)
else:
life_bar = u'\u2620 [dead]'
player_stats = u'%s %s <%i %s %s>: %s' % (
life_bar, player.name, player.life, str(
player.position), weapon_name, player.status or u'-')
screen += '\n' + colored(player_stats, player.color)
# print events (of last step) for debugging
if self.debug:
screen += u'\n'
screen += u'\n'.join([
colored(u'%s: %s' % (thing.name, event), thing.color)
for t, thing, event in self.world.events if t == self.world.t
])
os.system('clear')
print(screen)
# if using arduino screen, send data
if self.use_arduino:
for thing in self.world.things.values():
if isinstance(thing, Player):
icon = 'p'
else:
icon = thing.__class__.__name__[0].lower()
self.arduino(icon + \
chr(thing.position[0]) + \
chr(thing.position[1]))
self.arduino('r', True)
class Game(object):
"""An instance of game controls the flow of the game.
This includes player and zombies spawning, game main loop, deciding when
to stop, importing map data, drawing each update, etc.
"""
def __init__(
self,
rules_name,
player_names,
size,
map_file=None,
player_spawns=None,
zombie_spawns=None,
objetives=None,
initial_zombies=0,
minimum_zombies=0,
docker_isolator=False,
debug=False,
isolator_port=8000,
):
self.players = []
self.rules_name = rules_name
self.rules = get_creator("rules." + rules_name)(self)
self.player_spawns = player_spawns
self.zombie_spawns = zombie_spawns
self.objetives = objetives
self.minimum_zombies = minimum_zombies
self.docker_isolator = docker_isolator
self.isolator_port = isolator_port
self.debug = debug
self.world = World(size, debug=debug)
if map_file is not None:
self.import_map(map_file)
if docker_isolator:
from isolation.players_client import create_player_client
self.players = [
create_player_client(name, rules_name, objetives, self.isolator_port) for name in player_names
]
else:
self.players = [create_player(name, rules_name, objetives) for name in player_names]
self.spawn_players()
self.spawn_zombies(initial_zombies)
def spawn_players(self):
"""Spawn players using the provided player create functinons."""
self.world.spawn_in_random(self.players, self.player_spawns)
def spawn_zombies(self, count):
"""Spawn N zombies in the world."""
zombies = [Zombie() for i in range(count)]
self.world.spawn_in_random(zombies, self.zombie_spawns, fail_if_cant=False)
def position_draw(self, position):
"""Get the string to draw for a given position of the world."""
# decorations first, then things over them
thing = self.world.things.get(position)
decoration = self.world.decoration.get(position)
if thing is not None:
return thing.draw()
elif decoration is not None:
return decoration.draw()
else:
return u" "
def play(self, frames_per_second=2.0):
"""Game main loop, ending in a game result with description."""
while True:
self.world.step()
# mantain the flow of zombies if necessary
zombies = [thing for thing in self.world.things.values() if isinstance(thing, Zombie)]
if len(zombies) < self.minimum_zombies:
self.spawn_zombies(self.minimum_zombies - len(zombies))
self.draw()
if self.debug:
if sys.version_info > (3,):
input()
else:
raw_input()
else:
time.sleep(1.0 / frames_per_second)
if self.rules.game_ended():
return self.rules.game_won()
def draw(self):
"""Draw the world."""
os.system("clear")
# print the world
print(
"\n".join(
u"".join(self.position_draw((x, y)) for x in range(self.world.size[0]))
for y in range(self.world.size[1])
)
)
# print player stats
players = sorted(self.players, key=lambda x: x.name)
for player in players:
try:
weapon_name = player.weapon.name
except:
weapon_name = u"unarmed"
if player.life > 0:
# a small "health bar" with unicode chars, from 0 to 10 chars
life_chars_count = int((10.0 / player.MAX_LIFE) * player.life)
life = u"\u2665 %s%s %i" % (
life_chars_count * u"\u2588",
(10 - life_chars_count) * u"\u2591",
player.life,
)
else:
life = u"\u2620 [dead]"
player_stats = u"%s %s (%s): %s" % (life, player.name, weapon_name, player.status or u"-")
print(colored(player_stats, player.color))
# print events (of last step) for debugging
if self.debug:
print(
u"\n".join(
[
colored(u"%s: %s" % (thing.name, event), thing.color)
for t, thing, event in self.world.events
if t == self.world.t
]
)
)
def import_map(self, file_path):
"""Import things from a utf-8 map file."""
zombie_spawns = []
player_spawns = []
objetives = []
max_row = 0
max_col = 0
# read the file
encoding = "utf-8"
if sys.version_info > (3,):
with open(file_path, encoding=encoding) as map_file:
lines = map_file.read().split("\n")
else:
with open(file_path) as map_file:
lines = map_file.read().decode(encoding).split("\n")
# for each char, create the corresponding object
for row_index, line in enumerate(lines):
max_row = row_index
for col_index, char in enumerate(line):
if char:
max_col = max(col_index, max_col)
position = (col_index, row_index)
if char in (Box.ICON, "b", "B"):
self.world.spawn_thing(Box(position))
elif char in (Wall.ICON, "w", "W"):
self.world.spawn_thing(Wall(position))
elif char.lower() == "p":
player_spawns.append(position)
elif char.lower() == "z":
zombie_spawns.append(position)
elif char.lower() == "o":
objetives.append(position)
self.world.spawn_thing(ObjetiveLocation(position), decoration=True)
# if had any info, update spawns and objetives
if player_spawns:
self.player_spawns = player_spawns
if zombie_spawns:
self.zombie_spawns = zombie_spawns
if objetives:
self.objetives = objetives
# be sure everything in the map gets into the world size
if max_row > self.world.size[1] or max_col > self.world.size[0]:
message = "This map is bigger than the choosen size. Needs at least a %ix%i size"
raise Exception(message % (max_col + 1, max_row + 1))
pygame.draw.rect(surface, color,
[j * c.C2P, i * c.C2P, c.C2P, c.C2P])
pygame.draw.rect(surface,
BLACK, [
c.HOME_START * c.C2P, c.HOME_START * c.C2P,
c.NANTS_SQRT * c.C2P, c.NANTS_SQRT * c.C2P
],
width=2)
for ant in world.ants:
draw_ant(ant, surface)
world = World(c.DIMENSIONS)
# Define some colors
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)
pygame.init()
# Set the width and height of the screen [width, height]
size = (c.RESOLUTION, c.RESOLUTION)
screen = pygame.display.set_mode(size)
pygame.display.set_caption("AInts")
# Loop until the user clicks the close button.
from __future__ import annotations
import matplotlib.pyplot as plt
from matplotlib import animation
from core import Ant, World
import constants as c
from visualize import show_picture
from tqdm import trange, tqdm
ITERS = 10000
world = World(c.DIMENSIONS)
fig, ax = plt.subplots()
pbar = tqdm(total=ITERS)
# animation function. This is called sequentially
def animate(i):
ax.cla()
img = show_picture(world)
world.step()
pbar.update(1)
im = ax.imshow(img)
return im,
anim = animation.FuncAnimation(fig,
animate,
def main():
DEBUG = '--debug' in sys.argv
size = height, width = 480, 480
world = World(height, width)
screen = pygame.display.set_mode(size)
screen.fill((0, 0, 0))
home = Home(position=(0, 0))
home2 = Home(position=(465, 465))
ant = Ant(position=home.position, speed=3)
ant2 = Ant(position=home2.position, speed=3)
ant.setHome(home)
ant2.setHome(home2)
world.add_entity(ant)
world.add_entity(ant2)
world.add_entity(home)
world.add_entity(home2)
for i in range(100):
plant = Plant(position=(random.randint(10, 450),
random.randint(10, 450)))
world.add_entity(plant)
running = True
update = False
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT or pygame.key.get_pressed()[
pygame.K_ESCAPE]:
running = False
if DEBUG and event.type in (pygame.KEYDOWN, pygame.KEYUP):
update = pygame.key.get_pressed()[pygame.K_SPACE]
if not DEBUG or update:
world.update()
world.render(screen)
sleep(1 / 25)
class Game(object):
'''An instance of game controls the flow of the game.
This includes player and zombies spawning, game main loop, deciding when
to stop, importing map data, drawing each update, etc.
'''
def __init__(self, rules_name, player_names, map_, initial_zombies=0,
minimum_zombies=0, docker_isolator=False, debug=False,
isolator_port=8000, use_basic_icons=False, use_arduino=False,
arduino_device='/dev/ttyACM0', arduino_bauds=9600):
self.players = []
self.rules_name = rules_name
self.rules = get_creator('rules.' + rules_name)(self)
self.map = map_
self.minimum_zombies = minimum_zombies
self.docker_isolator = docker_isolator
self.isolator_port = isolator_port
self.debug = debug
self.use_basic_icons = use_basic_icons
self.use_arduino = use_arduino
self.arduino_device = arduino_device
self.arduino_bauds = arduino_bauds
self.world = World(self.map.size, debug=debug)
for thing in self.map.things:
self.world.spawn_thing(thing)
if docker_isolator:
from isolation.players_client import create_player_client
self.players = [create_player_client(name, rules_name,
self.map.objetives,
self.isolator_port)
for name in player_names]
else:
self.players = [create_player(name, rules_name,
self.map.objetives)
for name in player_names]
self.spawn_players()
self.spawn_zombies(initial_zombies)
if self.use_arduino:
self.arduino_serial = Serial(self.arduino_device,
self.arduino_bauds)
def spawn_players(self):
'''Spawn players using the provided player create functinons.'''
self.world.spawn_in_random(self.players, self.map.player_spawns)
def spawn_zombies(self, count):
'''Spawn N zombies in the world.'''
zombies = [Zombie() for i in range(count)]
self.world.spawn_in_random(zombies,
self.map.zombie_spawns,
fail_if_cant=False)
def position_draw(self, position):
'''Get the string to draw for a given position of the world.'''
# decorations first, then things over them
thing = self.world.things.get(position) or \
self.world.decoration.get(position)
if thing is not None:
if self.use_basic_icons:
icon = thing.icon_basic
else:
icon = thing.icon
return colored(icon, thing.color)
else:
return u' '
def play(self, frames_per_second=2.0):
'''Game main loop, ending in a game result with description.'''
while True:
self.world.step()
# mantain the flow of zombies if necessary
zombies = [thing for thing in self.world.things.values()
if isinstance(thing, Zombie)]
if len(zombies) < self.minimum_zombies:
self.spawn_zombies(self.minimum_zombies - len(zombies))
self.draw()
if self.debug:
if sys.version_info > (3,):
input()
else:
raw_input()
else:
time.sleep(1.0 / frames_per_second)
if self.rules.game_ended():
won, description = self.rules.game_won()
if self.use_arduino:
if won:
self.arduino('g', True) # "gwin!!"
else:
self.arduino('l', True) # lose
print('')
if won:
print(colored(u'WIN! ', 'green'))
else:
print(colored(u'GAME OVER ', 'red'))
print(description)
return won, description
def arduino(self, data, add_end_chars=False):
'''Send an order to the arduino screen.'''
if add_end_chars:
data = data + chr(1) * 2
self.arduino_serial.write(data)
def draw(self):
'''Draw the world.'''
screen = ''
# print the world
screen += '\n'.join(u''.join(self.position_draw((x, y))
for x in range(self.world.size[0]))
for y in range(self.world.size[1]))
# game stats
screen += '\nticks: %i deaths: %i' % (self.world.t, self.world.deaths)
# print player stats
players = sorted(self.players, key=lambda x: x.name)
for player in players:
try:
weapon_name = player.weapon.name
except:
weapon_name = u'unarmed'
if player.life > 0:
# a small "health bar" with unicode chars, from 0 to 10 chars
life_chars_count = int((10.0 / player.MAX_LIFE) * player.life)
life_chars = life_chars_count * u'\u2588'
no_life_chars = (10 - life_chars_count) * u'\u2591'
life_bar = u'\u2665 %s%s' % (life_chars, no_life_chars)
else:
life_bar = u'\u2620 [dead]'
player_stats = u'%s %s <%i %s %s>: %s' % (life_bar,
player.name,
player.life,
str(player.position),
weapon_name,
player.status or u'-')
screen += '\n' + colored(player_stats, player.color)
# print events (of last step) for debugging
if self.debug:
screen += u'\n'
screen += u'\n'.join([colored(u'%s: %s' % (thing.name, event),
thing.color)
for t, thing, event in self.world.events
if t == self.world.t])
os.system('clear')
print(screen)
# if using arduino screen, send data
if self.use_arduino:
for thing in self.world.things.values():
if isinstance(thing, Player):
icon = 'p'
else:
icon = thing.__class__.__name__[0].lower()
self.arduino(icon + \
chr(thing.position[0]) + \
chr(thing.position[1]))
self.arduino('r', True)
