def findPath(self, state):
#print "findPath"
#initialize the queue for a Depth First Seach
bfsQueue = self.getBFSQueue(state)
#copy of the current state of internal map to mark searched nodes
copyMap = deepcopy(self.map)
#conducts bfs search
while len(bfsQueue) != 0:
#pop the element from the queue
nextCheck = bfsQueue.pop(0)
#get the position stored at element
nextCheckPosition = nextCheck[0]
#extract x position from position
possibleX = nextCheckPosition[0]
#extract y position from position
possibleY = nextCheckPosition[1]
#if the position contains food, a capsule, or is unknown, pacman will visit it
if self.map[possibleX][possibleY] == "F" or self.map[possibleX][possibleY] == "?" or self.map[possibleX][possibleY] == "C":
#print "next move"
#pop the first step of the path stored in the currently searching element
nextMove = nextCheck[1].pop(0)
#set the internal path of pacman to the one found by the BFS
self.path = nextCheck[1]
#mark the position on the map as "P" to mark visited positions
self.map[nextMove[0][0]][nextMove[0][1]] = "P"
#set lastDir as the next move
self.lastDir = nextMove[1]
#return the popped direction stored at the frist step above as the next move
return api.makeMove(self.lastDir, api.legalActions(state))
else:
#if position does not contain food, capsule, or unknown information, continue the BFS search
#print "searching bfs"
#check all possibleMoves from the current popped from the queue in the current iteration of the BFS algorithm
for move in self.possibleMoves:
#get the next position in the search
nextPosition = self.sumPair(move[0], nextCheckPosition)
#if this postion is neither a wall nor a location already searched by the algorithm, add it to the search
if self.map[nextPosition[0]][nextPosition[1]] != "W" and copyMap[nextPosition[0]][nextPosition[1]] != "X":
#mark this location as searched by the BFS algorithm
copyMap[nextPosition[0]][nextPosition[1]] = "X"
#copy the existing path from the search into a new variable
path = deepcopy(nextCheck[1])
#add in the new loation and the direction to move to said location to the path
path.append((nextPosition, move[1]))
#add the path to the bfsQueue
bfsQueue.append((nextPosition, path))
#if no moves are available, pacman will not move
self.lastDir = Directions.STOP
return api.makeMove(Directions.STOP, api.legalActions(state))
def getAction(self, state):
legal = api.legalActions(state)
corners = api.corners(state)
print(corners)
return api.makeMove(Directions.STOP, legal)
def initialize(self, state):
# get location of all visible food
foods = api.food(state)
#get location of all corners
corners = api.corners(state)
#get location of all visible capsules
capsules = api.capsules(state)
# Get the actions we can try, and remove "STOP" if that is one of them.
legal = api.legalActions(state)
#get location of all visible walls
walls = api.walls(state)
#get pacmans position
pacman = api.whereAmI(state)
x = pacman[0]
y = pacman[1]
if self.map == None:
width = 0
height = 0
for corner in corners:
if corner[0] > width:
width = corner[0]
if corner[1] > height:
height = corner[1]
self.map = [["?" for y in range(height)] for x in range(width)]
for wall in walls:
self.map[wall[0]][wall[1]] = "W"
for food in foods:
self.map[food[0]][food[1]] = "F"
for capsule in capsules:
self.map[capsule[0]][capsule[1]] = "F"
self.map[x][y] = "0"
self.init = True
def getAction(self, state):
# How we access the features.
features = api.getFeatureVector(
state
) # first 4: walls, next 4: food, next 8: ghosts, next 1: ghost infront, next 1: class
# *****************************************************
#
# Here you should insert code to call the classifier to
# decide what to do based on features and use it to decide
# what action to take.
#
# *******************************************************
# from collected 'features' vector, classify as any of 0-3.
# this gives your move
# Get class from model and convert to action
number = self.model.predict(features)
action = self.convertNumberToMove(number)
# Get the actions we can try.
legal = api.legalActions(state)
return api.makeMove(action, legal)
def getAction(self, state):
"""Get Action of pacman
Args:
state: The state of an agent (configuration, speed, scared, etc).
"""
# Get the actions we can try, and remove "STOP" if that is one of them.
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
cols,rows = self.mapSize(state) # Get the layout size
# Judge the layout type medium or small
map_type = 'medium'
if cols >= 10 and rows >= 10:
map_type = 'medium'
else:
map_type = 'small'
# Update value map after pacman moved
updated_map = self.mapUpdate(state)
# Update value map with iteration
updated_map = self.Iteration(state,updated_map,map_type)
# Make move
return api.makeMove(self.whichToMove(state,updated_map), legal)
def getAction(self,state):
walls = api.walls(state)
width,height = api.corners(state)[-1]
legal = api.legalActions(state)
me = api.whereAmI(state)
food = api.food(state)
ghosts = api.ghosts(state)
capsules = api.capsules(state)
direction = Directions.STOP
x, y = me
if not hasattr(self, 'map'):
self.createMap(walls, width + 1, height + 1)
self.checkForCapsules(capsules, legal, ghosts)
legal = self.solveLoop(ghosts, legal)
if len(ghosts):
self.memorizeGhosts(ghosts)
if self.counter < 0:
for ghost in ghosts:
legal = self.checkForGhosts(ghost, me, legal)
direction = self.pickMove(me, legal, width + 1, height + 1, food)
self.updatePosition(me, 1, self.map)
self.printMap(self.map)
self.last = direction
return direction
def getAction(self, state):
self.updateMap(state)
self.policyIteration()
pacman = api.whereAmI(state)
legal = api.legalActions(state)
move = self.policy[pacman]
return api.makeMove(move, legal)
def getAction(self, state):
start = api.whereAmI(state)
# generate rewards for map locations in each game cycle to reflect changing conditions
self.rewardMapping(state)
# create the dictionary of states at the start of the game
if not self.stateDict:
self.stateMapping(state)
# get converged utilities from value iteration
gridVals = self.valueIteration(state)
# get and assign the utility values and their associated locations to the Grid object, then print this map
# representation to the console
valKeys = gridVals.keys()
valVals = gridVals.values()
for i in range(len(gridVals)):
y = valKeys[i][0]
x = valKeys[i][1]
val = '{:3.2f}'.format(valVals[i])
self.map.setValue(y, x, val)
self.map.prettyDisplay()
# optimal policy for Pacman: get the location of the optimal utility from his current position
sPrime = self.bestMove(state, gridVals)
# required argument for makeMove()
legal = api.legalActions(state)
# return a move based on the direction returned by singleMove() and sPrime
return api.makeMove(self.singleMove(start, sPrime), legal)
def getAction(self, state):
""" This function is used to make pacman move.
Parameter:
state: the state of pacman.
Returns the move of pacman.
"""
# Get the actions we can try, and remove "STOP" if that is one of them.
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
# Get the size of layout
rows,columns = self.map_size(state)
# Judge the map_type is mediumClass or smallGrid
map_type = 'mediumClass'
if rows >= 10 and columns >= 10:
map_type = 'mediumClass'
else:
map_type = 'smallGrid'
# Update the value map once pacman moved
value_map = self.map_update(state)
# Update the value map with value_iteration
value_map = self.value_iteration(state, value_map, map_type)
# Make move
return api.makeMove(self.where_to_move(state,value_map), legal)
def getAction(self, state):
# How we access the features.
features = api.getFeatureVector(state)
# *****************************************************
#
# Here you should insert code to call the classifier to
# decide what to do based on features and use it to decide
# what action to take.
#
# *******************************************************
nn = self.nn
# use the trained neural network to predict
y_pred = nn.predict(features)
# transform the output value from a list of 0 and 1 to a single value
n = 0
for i in range(len(y_pred)):
if y_pred[i] > y_pred[n]:
n = i
# Get the actions we can try.
legal = api.legalActions(state)
# getAction has to return a move. Here we pass "STOP" to the
# API to ask Pacman to stay where they are. We need to pass
# the set of legal moves to teh API so it can do some safety
# checking.
return api.makeMove(self.convertNumberToMove(n), legal)
def getAction(self, state):
# How we access the features.
features = api.getFeatureVector(state)
# *****************************************************
#
# Here you should insert code to call the classifier to
# decide what to do based on features and use it to decide
# what action to take.
features = np.append(features, 0)
number = self.PredictMove(features)
move = self.convertNumberToMove(number)
#
# *******************************************************
# Get the actions we can try.
legal = api.legalActions(state)
# Add some randomness to not get pacman completely stuck in the corner.
if move not in legal:
move = random.choice(legal)
# getAction has to return a move. Here we pass "STOP" to the
# API to ask Pacman to stay where they are. We need to pass
# the set of legal moves to teh API so it can do some safety
# checking.
return api.makeMove(move, legal)
def getAction(self, state):
self.pacman = api.whereAmI(state)
self.legal = api.legalActions(state)
self.ghosts = api.ghosts(state)
if not self.init:
self.initialize(state)
else:
# if self.reward[self.pacman[0]][self.pacman[1]] < 10:
# self.reward[self.pacman[0]][self.pacman[1]] = self.reward[self.pacman[0]][self.pacman[1]] - 1
# else:
self.reward[self.pacman[0]][self.pacman[1]] = self.baseReward
reward = self.updateMap(state)
self.bellman(state, reward)
print ''
for row in reward:
print row
print ''
for row in self.utility:
print row
#return self.getMove(state)
return api.makeMove(Directions.STOP, self.legal)
def getAction(self, state):
# find the facing direction of ghost
self.current_ghosts_states = api.ghostStatesWithTimes(state)
valid_facing = [(1, 0), (-1, 0), (0, 1), (0, -1), (0, 0)]
self.ghosts_facing = []
for i in range(len(self.current_ghosts_states)):
facing_of_ghost = (int(
round(self.current_ghosts_states[i][0][0] -
self.last_ghosts_states[i][0][0])),
int(
round(self.current_ghosts_states[i][0][1] -
self.last_ghosts_states[i][0][1])))
# elated by pacman
if facing_of_ghost not in valid_facing:
facing_of_ghost = (0, 0)
self.ghosts_facing.append(facing_of_ghost)
self.last_ghosts_states = self.current_ghosts_states
# search optimal policy and do an optimal action
self.initialRewardMap(state)
pacman = api.whereAmI(state)
utilities_map = self.updateUtilities()
legal = api.legalActions(state)
action_vectors = [Actions.directionToVector(a, 1) for a in legal]
optic_action = max(
map(
lambda x: (float(
utilities_map.getValue(x[0] + pacman[0], x[1] + pacman[1])
), x), action_vectors))
return api.makeMove(Actions.vectorToDirection(optic_action[1]), legal)
def deGhost(self, state):
# Avoid ghosts
#
# When running from a ghost, if pacman turns a corner,
# pacman can no longer see ghost, and thus may backtrack
# towards the ghost, causing him to get caught.
# Avoid this by going straight and never backtracking
# for 2 steps. Allows pacman to turn corners without losing
# track of ghost and backtracking towards it
self.update(state)
# print "Avoiding ghosts"
cur = api.whereAmI(state)
legal = api.legalActions(state)
legal.remove(Directions.STOP)
if len(legal) > 1:
#Remove option to backtrack
legal.remove(self.oppositeDirection(state, self.last))
#Go straight if possible
if self.last in legal:
return self.last
self.last = random.choice(legal)
return self.last
def getAction(self, state):
self.pacman = api.whereAmI(state)
self.legal = api.legalActions(state)
if not self.init:
self.initialize(state)
else:
# if self.reward[self.pacman[0]][self.pacman[1]] < 10:
# self.reward[self.pacman[0]][self.pacman[1]] = self.reward[self.pacman[0]][self.pacman[1]] - 1
# else:
self.reward[self.pacman[0]][self.pacman[1]] = -1
print "reward"
for row in self.reward:
print row
self.updateMap(state)
#print "\nreward"
#for row in self.reward:
# print row
self.bellman(state)
#print "utility"
#for row in self.utility:
# print row
return self.getMove(state)
return api.makeMove(Directions.STOP, self.legal)
def getAction(self, state):
# Get legal actions
legal = api.legalActions(state)
# Get location of Pacman
pacman = api.whereAmI(state)
# Get location of Ghosts
locGhosts = api.ghosts(state)
#print "locGhosts: ", locGhosts
# Get distance between pacman and the ghosts
for i in locGhosts:
p_g_dist = util.manhattanDistance(pacman, i)
# Get distance between ghosts
g_g_dist = util.manhattanDistance(locGhosts[0], locGhosts[1])
#print "g_g_dist:", g_g_dist
# Get distance between pacman and first Ghost
dist = []
dist.append(locGhosts[0][0] - pacman[0])
dist.append(locGhosts[0][1] - pacman[1])
return api.makeMove(Directions.STOP, legal)
def getAction(self, state):
# Get the actions we can try, and remove "STOP" if that is one of them.
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
# Random choice between the legal options.
return api.makeMove(random.choice(legal), legal)
def getAction(self, state):
self.makeMap(state)
self.addWallsToMap(state)
self.addConsumablesToMap(state)
self.updateGhosts(state)
# Get the actions we can try, and remove "STOP" if that is one of them.
pacman = api.whereAmI(state)
legal = api.legalActions(state)
ghosts = api.ghosts(state)
corners = api.corners(state)
layoutHeight = self.getLayoutHeight(corners)
layoutWidth = self.getLayoutWidth(corners)
if (layoutHeight-1)<8 and (layoutWidth-1)<8:
for i in range (100):
self.valIterS(state,0.68,-0.1)
else:
for i in range (50):
self.valIterM(state,0.8,-0.1)
plannedMove = self.plannedMove(pacman[0],pacman[1])
#self.dankMap.prettyDisplay()
#Feel free to uncomment this if you like to see the values generated
if Directions.STOP in legal:
legal.remove(Directions.STOP)
#Input the calculated move for our next move
return api.makeMove(plannedMove, legal)
def getAction(self, state):
value_list = []
legal = api.legalActions(state)
corner = api.corners(state)
pacman = api.whereAmI(state)
pacman_x = pacman[0]
pacman_y = pacman[1]
legal_width = corner[3][0]
legal_height = corner[3][1]
# policy iteration and evaluation
# get the value of four directions and select the direction corresponding to
# the maximum value as Pacman's decision.
map_effect = gridworld().map_valuegeneration(state, (legal_width, legal_height))
value_list.append(map_effect[(pacman_x-1, pacman_y)])
value_list.append(map_effect[(pacman_x+1, pacman_y)])
value_list.append(map_effect[(pacman_x, pacman_y + 1)])
value_list.append(map_effect[(pacman_x, pacman_y - 1)])
max_value = value_list.index(max(value_list))
# print 'map_effect'
# print map_effect
# print 'value_list'
# print value_list
# print 'max_value'
# print max_value
if max_value == 0:
return api.makeMove(Directions.WEST, legal)
if max_value == 1:
return api.makeMove(Directions.EAST, legal)
if max_value == 2:
return api.makeMove(Directions.NORTH, legal)
if max_value == 3:
return api.makeMove(Directions.SOUTH, legal)
def __maximum_expected_utility(self, state, debug_mode):
# the location of agent
agent_location = api.whereAmI(state)
if debug_mode:
print("\tagent_location=" + str(agent_location))
# discover the legal actions
legal = api.legalActions(state)
# remove STOP to increase mobility
legal.remove(Directions.STOP)
# decide next move based on maximum expected utility
action, maximum_expected_utility = None, None
for direction in legal:
utility = self.__utilities[self.__neighbors[agent_location]
[direction]][1]
if action == None or maximum_expected_utility == None:
action = direction
maximum_expected_utility = utility
expected_utility = utility
if debug_mode:
print("\tdirection=" + str(direction) + "\texpected_utility=" +
str(expected_utility))
if expected_utility > maximum_expected_utility:
action = direction
maximum_expected_utility = expected_utility
if debug_mode:
print("\taction=" + str(action))
return action
def getAction(self, state):
legal = api.legalActions(state)
if not Directions.WEST in legal:
if Directions.EAST in legal:
legal.remove(Directions.EAST)
return api.makeMove(random.choice(legal), legal)
return api.makeMove(Directions.WEST, legal)
def getAction(self, state):
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
#SELECT TARGET
target = api.food(state)[0]
print target
pacman = api.whereAmI(state)
print "Pacman position: ", pacman
if self.backsteps == 0:
if pacman[0] >= target[0]:
if Directions.WEST in legal:
return api.makeMove(Directions.WEST, legal)
else:
if Directions.EAST in legal:
return api.makeMove(Directions.EAST, legal)
if pacman[1] >= target[1]:
if Directions.SOUTH in legal:
return api.makeMove(Directions.SOUTH, legal)
else:
if Directions.NORTH in legal:
return api.makeMove(Directions.NORTH, legal)
self.backsteps = 2 #IT REACHES HERE ONLY ONCE BOTH DIRECTIONS IT WANTS TO GO ARE ILLEGAL, SO: BACKSTEP 2 STOPS TOWARDS RANDOM LEGAL DIRECTION
self.backstep_direction = random.choice(legal)
self.backsteps -= 1
return api.makeMove(self.backstep_direction, legal)
def getAction(self, state):
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
target = (1, 1)
print target
print "Food locations: "
print len(api.food(state))
pacman = api.whereAmI(state)
print "Pacman position: ", pacman
if self.backsteps == 0:
if pacman[0] >= target[0]:
if Directions.WEST in legal:
return api.makeMove(Directions.WEST, legal)
else:
if Directions.EAST in legal:
return api.makeMove(Directions.EAST, legal)
if pacman[1] >= target[1]:
if Directions.SOUTH in legal:
return api.makeMove(Directions.SOUTH, legal)
else:
if Directions.NORTH in legal:
return api.makeMove(Directions.NORTH, legal)
self.backsteps = 2
self.backstep_direction = random.choice(legal)
self.backsteps -= 1
return api.makeMove(self.backstep_direction, legal)
def getAction(self, state):
"""
The function to work out next intended action carried out.
Parameters:
None
Returns:
Directions: Intended action that Pacman will carry out.
"""
current_pos = api.whereAmI(state)
corners = api.corners(state)
food = api.food(state)
ghosts = api.ghosts(state)
ghost_scared_time = api.ghostStatesWithTimes(state)[0][1]
walls = api.walls(state)
legal = api.legalActions(state)
capsules = api.capsules(state)
protected_coords = walls + ghosts + [current_pos]
width = max(corners)[0] + 1
height = max(corners, key=itemgetter(1))[1] + 1
board = self.create_board(width, height, -0.04)
board.set_position_values(food, 1)
board.set_position_values(walls, 'x')
board.set_position_values(capsules, 2)
if ghost_scared_time < 5:
board.set_position_values(ghosts, -3)
# for i in range(height):
# for j in range(width):
# print board[i, j],
# print
# print
print "GHOST LIST: ", ghosts
for x, y in ghosts:
# set the surrounding area around the ghost to half the reward of the ghost
# avoids changing the reward of the ghost itself, the pacman and the walls
# print "GHOST Coordinates: " + str(x) + " " + str(y)
x_coordinates = [x - 1, x, x + 1]
y_coordinates = [y - 1, y, y + 1]
# print "X/Y Coordinates: " + str(x_coordinates) + " " + str(y_coordinates)
for x_coord in x_coordinates:
for y_coord in y_coordinates:
if (x_coord, y_coord) not in protected_coords:
# print("index: " + str((board.convert_y(y_coord), x_coord)))
converted_y = board.convert_y(y_coord)
# print "VALUE: " + str(board[board.convert_y(y), x])
board[converted_y,
x_coord] = board[board.convert_y(y), x] / 2
# print "VALUE PART 2: " + str(board[converted_y, x_coord])
board = self.value_iteration(state, board)
expected_utility = self.calculate_expected_utility(
state, board, abs(current_pos[1] - (height - 1)), current_pos[0])
return max([(utility, action) for utility, action in expected_utility
if action in legal])[1]
def getAction(self, state):
self.updateMap(state)
pacman = api.whereAmI(state)
legal = api.legalActions(state)
move = self.policy[pacman]
print self.values
print move
return api.makeMove(move, legal)
def getAction(self, state):
"""
The function to work out next intended action carried out.
Parameters:
None
Returns:
Directions: Intended action that Pacman will carry out.
"""
current_pos = api.whereAmI(state)
food = api.food(state)
# make sure all ghost coordinates are ints rather than floats
ghosts = [(int(x), int(y)) for x, y in api.ghosts(state)]
legal = api.legalActions(state)
capsules = api.capsules(state)
food_multiplier = (
(0.8 * len(food) / float(self.initial_num_food))**2) + 6
ghost_multiplier = (
(0.2 * len(food) / float(self.initial_num_food))**2) + 3
board = Board(self.width, self.height, -0.04)
board.set_position_values(self.walls, 'x')
board.set_position_values(capsules, 2 * food_multiplier)
board.set_position_values(food, 1 * food_multiplier)
board.set_position_values(ghosts, -7 * ghost_multiplier)
# rewards of ghosts, walls and current position cannot be overridden
protected_pos = set(ghosts + self.walls + [current_pos])
# setting a much more negative reward for potential positions ghosts can occupy
# in two moves.
for ghost in ghosts:
# loop through potential positions that the ghost can occupy if it were
# to move now
for pos in self.get_next_pos(ghost):
if pos not in protected_pos:
# set the reward value of surrounding positions of ghosts to -6 *
# ghost multiplier.
board[int(board.convert_y(pos[1])),
int(pos[0])] = -6 * ghost_multiplier
for position in self.get_next_pos(pos):
# loop through potential positions that the ghost can occupy if
# it were to move two times.
if position not in protected_pos:
board[int(board.convert_y(position[1])),
int(position[0])] = -6 * ghost_multiplier
board = self.value_iteration(state, board) # call value iteration
expected_utility = self.calculate_expected_utility(
state, board, board.convert_y(current_pos[1]), current_pos[0])
# returns action associated to the max utility out of all the legal actions.
return api.makeMove(
max([(utility, action) for utility, action in expected_utility
if action in legal])[1], legal)
def runFromGhost(self, state):
# Runs away from ghosts
#
# Returns any direction that moves pacman away from ghost
# Removes option of going towards ghost
# Makes random choice of remaining options
self.update(state)
# print "Running from ghosts"
cur = api.whereAmI(state)
ghosts = api.ghosts(state)
legal = api.legalActions(state)
legal.remove(Directions.STOP)
for x in range(1, 4):
#Ghost seen south of pacman
if (cur[0], cur[1] - x) in ghosts:
if Directions.SOUTH in legal:
#Stop pacman from going south towards ghost
if len(legal) > 1: legal.remove(Directions.SOUTH)
#Let pacman go in any direction except south
self.last = random.choice(legal)
return self.last
#Ghost seen west of pacman
if (cur[0] - x, cur[1]) in ghosts:
if Directions.WEST in legal:
#Stop pacman from going west towards ghost
if len(legal) > 1: legal.remove(Directions.WEST)
#Let pacman go in any direction except west
self.last = random.choice(legal)
return self.last
#Ghost seen north of pacman
if (cur[0], cur[1] + x) in ghosts:
if Directions.NORTH in legal:
#Stop pacman going north towards ghost
if len(legal) > 1: legal.remove(Directions.NORTH)
#Let pacman go in any direction except south
self.last = random.choice(legal)
return self.last
#Ghost seen east of pacman
if (cur[0] + x, cur[1]) in ghosts:
if Directions.EAST in legal:
#Stop pacman going east towards ghost
if len(legal) > 1: legal.remove(Directions.EAST)
#Let pacman go in any direction except east
self.last = random.choice(legal)
return self.last
self.last = random.choice(legal)
return self.last
def getAction(self, state):
# Get the actions we can try, and remove "STOP" if that is one of them.
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
# Always go West if it is an option
if Directions.WEST in legal:
return api.makeMove(Directions.WEST, legal)
# Otherwise pick any other legal action
return api.makeMove(random.choice(legal), legal)
def getAction(self, state):
features = api.getFeatureVector(state)
# Return majority classification from ensemble
moveNumber = majorityVote(features, self.classifier)
legal = api.legalActions(state)
return api.makeMove(self.convertNumberToMove(moveNumber), legal)
def getAction(self, state):
# Get the actions we can try, and remove "STOP" if that is one of them.
legal = api.legalActions(state)
if Directions.STOP in legal:
legal.remove(Directions.STOP)
# Get current location of pacman
pacman = api.whereAmI(state)
# Get list of food locations
food = api.food(state)
# Compute manhattan distance to each food location
foodDistances = []
for i in range(len(food)):
foodDistances.append(util.manhattanDistance(pacman, food[i]))
# print foodDistances
minDistance = min(foodDistances)
# print "Min Distance: ", minDistance
minDistanceIndex = foodDistances.index(minDistance)
# print "Min Food index: ", minDistanceIndex
nearestFood = food[minDistanceIndex]
# print "Pacman: ", pacman
# print "Nearest Food: ", nearestFood
diffX = pacman[0] - nearestFood[0]
diffY = pacman[1] - nearestFood[1]
# print "legal", legal
# print diffX, diffY
moveX = Directions.STOP
moveY = Directions.STOP
# Determine whether to move east or west
if diffX >= 0:
# print "Go left"
moveX = Directions.WEST
elif diffX < 0:
# print "Go right"
moveX = Directions.EAST
# Determine whether to move north or south
if diffY >= 0:
# print "Go down"
moveY = Directions.SOUTH
elif diffY < 0:
# print "Go up"
moveY = Directions.NORTH
# Determine whether to move in X or Y
# print "diffX: ", diffX, " diffY", diffY
if abs(diffX) >= abs(diffY) and moveX in legal:
# print moveX
return api.makeMove(moveX, legal)
elif abs(diffY) >= 0 and moveY in legal:
# print moveY
return api.makeMove(moveY, legal)
elif abs(diffX) >= 0 and moveX in legal:
return api.makeMove(moveX, legal)
else:
# print "Random"
return api.makeMove(random.choice(legal), legal)
