def fighting(self):
"""
Calculate the action of a monster who sees the player.
"""
if self.currentLevel.player not in self.fov:
if self.player_last_location is not None:
# The player has escaped! Find a likely square where he could have gone.
adjacent_coords = coordinates.adjacent_coords(
self.player_last_location)
legal_coords = [
i for i in adjacent_coords
if coordinates.legal(i, self.currentLevel.dimensions)
]
passable_coords = [
i for i in legal_coords if self.currentLevel.isEmpty(i)
]
out_of_vision_coords = \
[i for i in passable_coords if i not in self.fov]
if len(out_of_vision_coords) > 0:
# There is a possible escape route! Pursue!
self.direction = coordinates.subtract(
rng.choice(out_of_vision_coords),
self.player_last_location)
self.path = pf.find_shortest_path(
self.currentLevel, self.coords,
self.player_last_location, False)
if self.path == []:
# There is no route to the player's escape route. Wait, but stay in
# state FIGHTING so as to take advantage of any route that opens up.
return action.Wait(self)
self.state = ais.TRAVELING
return self.traveling()
else:
# There is no possible escape route; give up and rest.
self.state = ais.RESTING
return self.resting()
else:
assert False
else:
self.player_last_location = self.currentLevel.player.coords
if self.AICode == "CLOSE":
return self.closeToPlayer()
elif self.AICode == "RANGEDAPPROACH":
return self.rangedApproach()
else:
raise exc.InvalidDataWarning(
"The monster %s has an unknown AICode, %s" % (self.name,
self.AICode))
return action.Wait(self)
assert False
def recalculate(self, level_, initial_location):
"""
Set this fov to the squares seen from initial_location on level_.
level_ - The level on which the field of view is being calculated.
initial_location - the viewpoint from which the field of view is being
calculated.
"""
dimensions = level_.dimensions
border = set()
fov_set = set()
dude_set = set()
border.add(initial_location)
while len(border) != 0:
next_border = set()
for i in border:
for adjacent in coordinates.adjacent_coords(i):
if adjacent in fov_set or adjacent in border or adjacent in next_border:
pass
elif not coordinates.legal(adjacent, dimensions):
pass
else:
if level_.dungeonGlyph(adjacent) in OPEN_GLYPHS:
next_border.add(adjacent)
else:
fov_set.add(adjacent)
if adjacent in level_.dudeLayer:
dude_set.add(level_.dudeLayer[adjacent])
fov_set.add(i)
border = next_border
self.__the_field = fov_set
self.dudes = frozenset(dude_set)