def __call__(self) -> tuple:
"""
Returns keyboard input, ignores vision.
Parameters
----------
direction: tuple
Current global direction Snake is facing
Returns
-------
tuple: (new global direction, move necessary to have Snake oriented to this direction)
"""
if keyboard.is_pressed("w") or keyboard.is_pressed("up"):
move = UP
elif keyboard.is_pressed("a") or keyboard.is_pressed("left"):
move = LEFT
elif keyboard.is_pressed("s") or keyboard.is_pressed("down"):
move = DOWN
elif keyboard.is_pressed("d") or keyboard.is_pressed("right"):
move = RIGHT
else:
move = self.direction
newDirection = {
False: move,
True: self.direction
}[move == (-self.direction[0], -self.direction[1])]
move = brain.getOrientedDirection(self.direction, newDirection,
"global")
return newDirection, move
def getDistances(origin, direction, target):
distances = {(-1, 0): 0, (0, 1): 0, (1, 0): 0}
for turnDirection in distances:
newDirection = brain.getOrientedDirection(direction, turnDirection,
"local")
probe = (origin[0] + newDirection[0], origin[1] + newDirection[1])
distances[turnDirection] = brain.dist(probe, target)
return distances
def getMoveFromPath(path, body, direction):
if path:
moveTo = path.pop()
nextDirection = (moveTo[0] - body[0][0], moveTo[1] - body[0][1])
nextMove = brain.getOrientedDirection(direction, nextDirection,
"global")
else:
nextDirection, nextMove = direction, (0, 1)
return nextDirection, nextMove
def getOpenness(body, direction, environment, depth=25):
openness = {(-1, 0): 0, (0, 1): 0, (1, 0): 0}
for turnDirection in openness:
newDirection = brain.getOrientedDirection(direction, turnDirection,
"local")
if environment[(probe :=
(body[0][0] + newDirection[0], body[0][1] +
newDirection[1]))] != -1: # if adjacent space is open
openness[turnDirection] = brain.floodFillCount(
environment.copy(), probe,
depth=depth) # might have to switch to deep copy
def calcMoves(self,
body,
direction,
awareness,
environment,
hunger,
noise=0):
if self.memories:
self.nextDirection = self.memories.pop()
self.nextMove = brain.getOrientedDirection(direction,
self.nextDirection,
"global")
else:
self.nextMove, self.nextDirection = (0, 0), (0, 0)
def getShieldedNetworkDecision(
network, body, direction, vision
): # split into shielded and non shielded function options to avoid unnecesary conditional
decision = np.argmax(network.feedForward(vision))
nextMove = {0: (-1, 0), 1: (0, 1), 2: (1, 0)}[decision] # local direction
lethalMoves = {
direction
for direction, danger in zip([(-1, 0), (0, 1), (1, 0)], [
vision[11] == 1 or vision[19] == 1, vision[8] == 1
or vision[16] == 1, vision[9] == 1 or vision[17] == 1
]) if danger
}
nextMove = smartShield(body[0], nextMove, lethalMoves)
nextDirection = brain.getOrientedDirection(direction, nextMove, "local")
return nextDirection, nextMove
def getCloseSafeMove(openness, distances, direction, threshold=1):
safeMove = max(openness, key=openness.get)
maxSafety = openness[safeMove]
rewardMove = min(distances, key=distances.get)
#print()
#print(openness)
#print(distances)
if maxSafety > 0 and openness[rewardMove] / maxSafety >= threshold:
#print("Reward")
nextMove = rewardMove
else:
nextMove = safeMove
#print("Safe")
nextDirection = brain.getOrientedDirection(direction, nextMove, "local")
return nextDirection, nextMove
def getClosestMove(distances, direction):
nextMove = min(distances, key=distances.get)
nextDirection = brain.getOrientedDirection(direction, nextMove, "local")
return nextDirection, nextMove
def getNetworkDecision(network, body, direction, vision):
decision = np.argmax(network.feedForward(vision))
nextMove = {0: (-1, 0), 1: (0, 1), 2: (1, 0)}[decision]
nextDirection = brain.getOrientedDirection(direction, nextMove, "local")
return nextDirection, nextMove
def getSafestMove(openness, direction):
nextMove = max(openness, key=openness.get)
nextDirection = brain.getOrientedDirection(direction, nextMove, "local")
return nextDirection, nextMove
