def spawn(self, thing, position):
"""Add a thing to the world."""
if not inside_map(position, self.size):
message = "Can't spawn things outside the map {}".format(position)
raise Exception(message)
other = self.things.get(position)
if other is None:
self.things[position] = thing
thing.position = position
else:
message = "Can't place {} in a position occupied by {}."
raise Exception(message.format(thing, other))
def move(thing, world, target_position):
obstacle = world.things.get(target_position)
if obstacle is not None:
event = 'hit {} with his head'.format(obstacle.name)
elif not inside_map(target_position, world.size):
event = "want's to get out of the world"
else:
# we store position in the things, because they need to know it,
# but also in our dict, for faster access
world.things[target_position] = thing
del world.things[thing.position]
thing.position = target_position
event = 'moved to {}'.format(target_position)
return event
