def a_star_algorithm(graph, start, end):
frontier = priorityQueue()
frontier.enQueue(utils.tup(start), 0)
path = {}
cost = {}
path[utils.tup(start)] = None
cost[utils.tup(start)] = 0
while not frontier.isEmpty():
current = frontier.deQueue()
if current == end:
break
for nb in graph.find_neighbors(vec(current)):
nb = utils.tup(nb)
# c(move) = f(x) + g(x) ~> cost = costUpToHere + heuristic
nextCost = cost[current] + graph.cost(current, nb)
if nb not in cost or nextCost < cost[nb]:
cost[nb] = nextCost
priority = nextCost + heuristic(end, vec(nb))
frontier.enQueue(nb, priority)
path[nb] = {
"from": vec(current),
"direct": vec(current) - vec(nb)
}
return path
def initScene(self):
# re-create the map, camera, spawners for new scene
self.map = grid.mapManager(self)
self.camera = grid.camera(self, self.map.width, self.map.height)
self.objects.spawners = []
self.graph = grid.weightedGrid(self, self.map.width, self.map.height)
# map parsing #
for rowIndex, tiles in enumerate(self.map.data):
for collumIndex, tile in enumerate(tiles):
# cordinates using row and collum index
topLeft = vec(collumIndex, rowIndex) * self.state.tileSize
self.graph.weights[utils.tup(topLeft)] = settings.t_weight
# wall sprite #
if tile == 'w':
environments.wall(self, topLeft)
self.graph.walls.append(utils.tup(topLeft))
# player sprite #
elif tile == 'P':
self.objects.player = actors.player(self, topLeft)
# zombie sprite #
elif tile == 'Z':
actors.zombie(self, topLeft)
# spawner tile #
elif tile == 's':
self.objects.spawners.append(topLeft)
# initilize text
self.materialsTxt = "MATERIALS: " + str(
self.objects.buildMode.buildPoints)
def compute_message_trees(messages):
from r2.models import Message
roots = set()
threads = {}
mdict = {}
messages = sorted(messages, key=lambda m: m._date, reverse=True)
for m in messages:
if not m._loaded:
m._load()
mdict[m._id] = m
if m.first_message:
roots.add(m.first_message)
threads.setdefault(m.first_message, set()).add(m._id)
else:
roots.add(m._id)
# load any top-level messages which are not in the original list
missing = [m for m in roots if m not in mdict]
if missing:
mdict.update(Message._byID(tup(missing), return_dict=True, data=True))
# sort threads in chrono order
for k in threads:
threads[k] = list(sorted(threads[k]))
tree = [(root, threads.get(root, [])) for root in roots]
tree.sort(key=tree_sort_fn, reverse=True)
return tree
def compute_message_trees(messages):
from r2.models import Message
roots = set()
threads = {}
mdict = {}
messages = sorted(messages, key = lambda m: m._date, reverse = True)
for m in messages:
if not m._loaded:
m._load()
mdict[m._id] = m
if m.first_message:
roots.add(m.first_message)
threads.setdefault(m.first_message, set()).add(m._id)
else:
roots.add(m._id)
# load any top-level messages which are not in the original list
missing = [m for m in roots if m not in mdict]
if missing:
mdict.update(Message._byID(tup(missing),
return_dict = True, data = True))
# sort threads in chrono order
for k in threads:
threads[k] = list(sorted(threads[k]))
tree = [(root, threads.get(root, [])) for root in roots]
tree.sort(key = tree_sort_fn, reverse = True)
return tree
def last_modified_multi(things, action):
from pylons import g
cache = g.permacache
things = tup(things)
keys = dict((last_modified_key(thing, action), thing) for thing in things)
last_modified = cache.get_multi(keys.keys())
return dict((keys[k], v) for k, v in last_modified.iteritems())
def last_modified_multi(things, action):
from pylons import g
cache = g.permacache
things = tup(things)
keys = dict((last_modified_key(thing, action), thing) for thing in things)
last_modified = cache.get_multi(keys.keys())
return dict((keys[k], v) for k, v in last_modified.iteritems())
def navPath(self, path, start, target):
pos = target
shortestPath = []
while pos != start:
currentNode = path.get(utils.tup(pos),None)
if currentNode == None: break
pos, move = currentNode["from"], -currentNode["direct"]
shortestPath.append(move)
shortestPath.reverse()
return shortestPath
def update_comment_votes(comments):
comments = tup(comments)
link_map = {}
for com in comments:
link_map.setdefault(com.link_id, []).append(com)
for link_id, coms in link_map.iteritems():
with g.make_lock(lock_key(link_id)):
for sort in ("_controversy", "_hot", "_confidence", "_score"):
key = sort_comments_key(link_id, sort)
r = g.permacache.get(key)
# don't bother recomputing a non-existant sort dict, as
# we'll catch it next time we have to render something
if r:
for comment in coms:
r[comment._id] = _get_sort_value(comment, sort)
g.permacache.set(key, r)
def update_comment_votes(comments):
comments = tup(comments)
link_map = {}
for com in comments:
link_map.setdefault(com.link_id, []).append(com)
for link_id, coms in link_map.iteritems():
with g.make_lock(lock_key(link_id)):
for sort in ("_controversy", "_hot", "_confidence", "_score"):
key = sort_comments_key(link_id, sort)
r = g.permacache.get(key)
# don't bother recomputing a non-existant sort dict, as
# we'll catch it next time we have to render something
if r:
for comment in coms:
r[comment._id] = _get_sort_value(comment, sort)
g.permacache.set(key, r)
def thing_attr(self, thing, attr):
if attr == "pref_clickgadget":
return bool(thing.pref_clickgadget)
elif attr == "pref_content_langs":
return tup(thing.pref_content_langs)
return ThingJsonTemplate.thing_attr(self, thing, attr)
def thing_attr(self, thing, attr):
if attr == "pref_clickgadget":
return bool(thing.pref_clickgadget)
elif attr == "pref_content_langs":
return tup(thing.pref_content_langs)
return ThingJsonTemplate.thing_attr(self, thing, attr)
