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brain.py
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brain.py
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import random
'''
sense sensedir st1 st2 cond Go to state st1 if cond holds in sensedir;
and to state st2 otherwise.
mark i st Set mark i in current cell and go to st.
unmark i st Clear mark i in current cell and go to st.
pickup st1 st2 Pick up food from current cell and go to st1;
go to st2 if there is no food in the current cell.
drop st drop food in current cell and go to st.
turn lr st turn left or right and go to st.
move st1 st2 move forward and go to st1;
go to st2 if the cell ahead is blocked.
flip p st1 st2 Choose a random number x from 0 to p-1;
go to st1 if x=0 and st2 otherwise.
'''
class Brain:
_rand_gen = lambda cls, x: random.randint(0,x)
def __init__(self, brain_id, states, position, color):
self.brain_id = brain_id
self._state = 0
self._states = states
self._has_food = False
self._direction = 0
self._position = position
self._rest_time = 0
self._color = color
self.alive = True
#self._rand_gen = get_random
#self._rand_gen = make_rand_gen(random.randint(0, 10000))
@property
def color(self):
return self._color
@property
def rest_time(self):
return self._rest_time
@property
def has_food(self):
return self._has_food
@property
def position(self):
return self._position
@position.setter
def position(self, value):
self._position = value
def update_brain(self, world):
"""
Changes the state (excluding position) of brain, according to
current instruction.
"""
#mem_usage = memory_usage(-1, interval=.01, timeout=.01)
#print mem_usage
instruction = self._states[self._state]
move = ["none"]
#if self.brain_id == 19:
# print 19
# print self._state
# print instruction
# print ""
if self._rest_time > 0:
self._rest_time -= 1
move = ["none"]
elif instruction[0] == "sense":
pos = self._position
dir = self._direction
color = self._color
sensed_pos = sensed_cell(pos, dir, instruction[1])
if cell_matches(world, sensed_pos, instruction[4:], color):
self._state = instruction[2]
else:
self._state = instruction[3]
move = ["none"]
elif instruction[0] in ["mark", "unmark"]:
move = instruction[:-1]
self._state = instruction[2]
elif instruction[0] == "pickup":
x, y = self.position
if self.has_food or world[x][y]["foods"] == 0:
move = ["none"]
self._state = instruction[2]
else:
move = [instruction[0]]
self._state = instruction[1]
elif instruction[0] == "drop":
move = [instruction[0]] if self.has_food else ["none"]
self._state = instruction[1]
elif instruction[0] == "turn":
move = [instruction[0]+"-"+instruction[1]]
self._state = instruction[2]
elif instruction[0] == "move":
new_pos = adjacent_cell(self.position, self._direction)
nx, ny = new_pos
if rocky(world, new_pos) or world[nx][ny]["ant"] is not None:
move = ["none"]
self._state = instruction[2]
else:
self._state = instruction[1]
self._rest_time = 14
move = [instruction[0]]
elif instruction[0] == "flip":
rand_n = self._rand_gen(instruction[1])
#print self.brain_id,"", rand_n
rand_state = instruction[2] if rand_n == 0 else instruction[3]
self._state = rand_state
move = ["none"]
return move
@classmethod
def attach_gui(cls, gui):
cls.gui = gui
@classmethod
def parse_brain(cls, filename, color):
instructions = []
with open(filename) as brain_file:
file_content = brain_file.readlines()
num_of_lines = len(file_content)
for i, line in enumerate(file_content):
line = line.strip()
# Split instructions into strings and remove their case sensitivity.
words = [w.lower() for w in line.split(" ")]
if words[0] == "sense":
if (words[1] not in ["here", "ahead", "leftahead", "rightahead"]):
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + words[1] + " and should be either 'Here', 'Ahead', 'LeftAhead' or 'RightAhead'.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + str(words[2]) + " and should be between 0 and the number of states.",color)
finally:
return None
if int(words[3]) < 0 and int(words[3]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + str(words[3]) + " and should be between 0 and the number of states.",color)
finally:
return None
if (words[4] not in ["friend", "foe", "friendwithfood", "foewithfood", "food", "rock", "marker", "foemarker", "home", "foehome"]):
try:
Brain.gui.change_brain_details("The fifth word on line: " + str(i + 1) + " is " + words[4] + " and should be either 'Friend', 'Foe', 'FriendWithFood', 'FoewithFood', 'Food', 'Rock', 'marker', 'Foemarker', 'Home', 'ForHome'",color)
finally:
return None
if words[4] == "marker" and int(words[5]) > 6 and int(words[5]) < 0:
try:
Brain.gui.change_brain_details("The 6th word on line: " + str(i + 1) + " is " + str(words[4]) + " and should be between 1 and 6",color)
finally:
return None
if words[4] == "marker":
instructions.append([words[0], words[1], int(words[2]), int(words[3]), words[4], int(words[5])])
else:
instructions.append([words[0], words[1], int(words[2]), int(words[3]), words[4]])
elif words[0] == "mark":
if int(words[1]) < 0 or int(words[1]) > num_of_lines:
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + str(words[1]) + " and should be between 0 and the number of states.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + str(words[2]) + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], int(words[1]), int(words[2])])
elif words[0] == "unmark":
if int(words[1]) < 0 or int(words[1]) > num_of_lines:
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + str(words[1]) + " and should be between 0 and the number of states.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + str(words[2]) + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], int(words[1]), int(words[2])])
elif words[0] == "pickup":
if int(words[1]) < 0 or int(words[1]) > num_of_lines:
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + str(words[1]) + " and should be between 0 and the number of states.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + str(words[2]) + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], int(words[1]), int(words[2])])
elif words[0] == "drop":
if int(words[1]) < 0 or int(words[1]) > num_of_lines:
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + str(words[1]) + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], int(words[1])])
elif words[0] == "turn":
if (words[1] not in ["left", "right"]):
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + str(words[1]) + " and should be either 'Left' or 'Right'.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + words[2] + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], words[1], int(words[2])])
elif words[0] == "move":
if int(words[1]) < 0 or int(words[1]) > num_of_lines:
try:
Brain.gui.change_brain_details("The second word on line: " + str(i + 1) + " is " + words[1] + " and should be between 0 and the number of states.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + words[2] + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], int(words[1]), int(words[2])])
elif words[0] == "flip":
if int(words[1]) < 0:
try:
Brain.gui.change_brain_details("The second number on line: " + str(i + 1) + " is " + words[1] + " and should be a number no less than 0.",color)
finally:
return None
if int(words[2]) < 0 or int(words[2]) > num_of_lines:
try:
Brain.gui.change_brain_details("The third word on line: " + str(i + 1) + " is " + words[2] + " and should be between 0 and the number of states.",color)
finally:
return None
if int(words[3]) < 0 or int(words[3]) > num_of_lines:
try:
Brain.gui.change_brain_details("The fourth word on line: " + str(i + 1) + " is " + words[3] + " and should be between 0 and the number of states.",color)
finally:
return None
instructions.append([words[0], int(words[1]), int(words[2]), int(words[3])])
else:
try:
Brain.gui.change_brain_details("The first word on line: " + str(i + 1) + " is " + words[0] + "\nand should be either 'sense', 'mark', 'unmark', 'pickup',\n'drop', 'turn', 'move', 'flip'",color)
finally:
return None
try:
Brain.gui.change_brain_details("File: " + filename + "\n" +
"States: " + str(len(instructions)), brain=color)
except Exception as e:
pass
return instructions
#################################################
# Convenient functions for ant brain simulation #
#################################################
def adjacent_cell(pos, dir):
"""Returns the adjacent cell of position, depending on the direction."""
x, y = pos
even = (y % 2 == 0)
next_dir = {}
next_dir[0] = (x+1, y)
next_dir[1] = (x, y+1) if even else (x+1, y+1)
next_dir[2] = (x-1, y+1) if even else (x, y+1)
next_dir[3] = (x-1, y)
next_dir[4] = (x-1, y-1) if even else (x, y-1)
next_dir[5] = (x, y-1) if even else (x+1, y-1)
return next_dir[dir]
def sensed_cell(pos, dir, sense_dir):
"""Returns the coordinates of the cell being sensed."""
if sense_dir == "here":
return pos
elif sense_dir == "ahead":
return adjacent_cell(pos, dir)
elif sense_dir == "leftahead":
return adjacent_cell(pos, turn("left", dir))
return adjacent_cell(pos, turn("right", dir))
def turn(lr, dir):
"""Returns the new turned direction."""
if lr == "left":
return (dir+5) % 6
return(dir+1) % 6
def other_color(color):
"""Returns the opposite color of the ant."""
if color == "red":
return "black"
return "red"
def rocky(world, pos):
"""Returns True if pos is rocky."""
x, y = pos
return world[x][y]["rock"]
def check_marker_at(world, pos, color, marker):
"""Returns True if marker of color c is set in pos."""
x, y = pos
return any(m[0] == marker and m[1] == color for m in world[x][y]["markers"])
def any_marker_at(world, pos, color):
"""Returns True if ANY marker of color c is set in pos."""
x, y = pos
return any(m[1] == color for m in world[x][y]["markers"])
def cell_matches(world, pos, cond, color):
"""
Takes a position p, a condition cond, and a color c
(the color of the ant that is doing the sensing), and
checks whether cond holds at p.
"""
if rocky(world, pos):
return True if cond[0] == "rock" else False
x, y = pos
ant = world[x][y]["ant"]
if cond[0] == "marker":
return check_marker_at(world, pos, color, cond[1])
other_type = {}
if cond[0] == "food":
return world[x][y]["foods"] > 0
elif cond[0] == "rock":
return False
elif cond[0] == "foemarker":
return any_marker_at(world, pos, other_color(color))
elif cond[0] == "home":
return (world[x][y]["hill"] == color)
elif cond[0] == "foehome":
return (world[x][y]["hill"] == other_color(color))
if ant is not None and cond[0] not in other_type:
if cond[0] == "friend":
return (ant.color == color)
elif cond[0] == "foe":
return not (ant.color == color)
if cond[0] == "friendwithfood":
return (ant.color == color) and ant.has_food
if cond[0] == "foewithfood":
return not (ant.color == color) and ant.has_food
return ant_type[cond[0]]
other_type["friend"] = False
other_type["foe"] = False
other_type["friendwithfood"] = False
other_type["foewithfood"] = False
return other_type[cond[0]]
def make_rand_gen(seed):
"""Returns a predetermined pseudo rand gen based on seed."""
S = []
S.append(seed)
for i in xrange(0, 4):
S.append(S[-1] * 22695477 + 1)
def randomint(n):
if n > 0:
x = (S[-1] / 65536) % n
S[-1] = S[-1] * 22695477 + 1
return int(x % n)
return randomint
if __name__ == "__main__":
RANDOM(12345)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)
print get_random(16384)