def get_current_room(self):
distant_point = (0.0, 1e10)
player_to_distance = (tuple(self.position), distant_point)
for room in self.game.rooms:
# Count the times it crosses the room's boundary. Odd = inside.
cross_count = 0
for wall in room.walls:
if utils.lines_intersect(player_to_distance, wall):
cross_count += 1
if cross_count % 2 == 1:
return room
# Inside no room
return None
def contains_point(self, point):
"""True if the room contains the given 2D or 3D point.
"""
# Three coords? Check Z first.
if len(point) > 2:
if not self.floor_height <= point[3] <= self.ceiling_height:
return False
# Check it's inside the boundaries
distant_point = (0.0, 1e10)
player_to_distance = ((point[0], point[1]), distant_point)
# Count the times it crosses the room's boundary. Odd = inside.
cross_count = 0
for wall in self.walls:
if utils.lines_intersect(player_to_distance, wall):
cross_count += 1
if cross_count % 2 == 1:
return True
else:
return False
def check_walls(self):
"""Make sure the vertices are valid.
# >>> a = 0.0, 0.0 # c
# >>> b = 1.0, 0.0 #
# >>> c = 0.0, 1.0 # a b
# >>> Room((a, b, c)).check_walls()
Checks for self-intersection and winding.
"""
# Make sure every vertex is unique
if not len(set(self.vertices)) == len(self.vertices):
raise InvalidRoomError("Vertices aren't unique.")
# Check for intersection. Loop over every pair of walls:
for wall_a, wall_b in itertools.combinations(self.walls, 2):
if utils.lines_intersect(wall_a, wall_b):
raise InvalidRoomError("Walls intersect: %s, %s" %
(wall_a, wall_b))
# Check winding:
self.check_winding()
