What would life be like for people in an 1800s era setting (give or take a century or specific technologies that should or should not exist if it's convenient), who live on a planet inhabited by the aliens from Pitch Black? Assume it's an earth like planet only into which the aliens from Pitch Black are introduced somehow, rather than a planet on which the aliens evolved naturally.
To be more specific about the aliens:
- They come out at night, in large numbers, are extremely aggressive and will actively hunt humans
- To keep things simple, assume they cannot fly, but rather run along the ground, albeit faster than a human. They can climb walls but don't have any real intelligence so for instance they wouldn't attempt to open a door. They might however try to batter down the doors/walls/windows if they smell prey inside.
- They are extremely sensitive to light, to the point where they will flee from anything moderately bright. Any which are somehow trapped and unable to return to their nest or find some other dark place to hide come daytime will die (kind of like vampires I guess).
- They leave fields of crops alone for the most part - they'll ignore wheat fields or whatever, though they might pass through them randomly on their wanderings or if they're chasing prey.
- They will eat animals as well.
I imagine society would look very different. For instance, I imagine towns would probably not be much further than a long day's ride apart, as any further and a trip between the two means something going wrong and you're stuck outside in the dark outside the walls. Which leads me to....
- All human settlements would be walled, and have large bonfires lit along at regular intervals which are kept on all night. Once electric power and lights begin to become more mainstream, I'd assume this would be moved over to electric spotlights or something, though that seems risky - power outages would mean the potential death of everyone in the town.
- Towns and cities would be much smaller in population, as everybody's houses would have to be inside the walls. Maybe they can adapt by building the workshops and other industrial things outside the walls assuming them to be empty before nightfall to gain more room inside the walls, as the aliens will ignore the workshops so long as there isn't anything to eat inside. Though that does run the risk of a stray alien deciding to nest up for the day inside your factory and having a nasty surprise for your workers the next morning. . . .
- Kind of an addition to the previous point, while towns and cites will be limited to the size of the walls able to house their residents, I imagine the density of towns will increase rather than the size of cities - so as people expand, I imagine almost a grid of towns each approx 1 days ride away or less in every direction.
- Livestock would be rare and much smaller in number, having to be housed inside town walls or having their own set of walls which have to be manned and kept lit, etc, which is expensive. Thus, most animal products would be extremely expensive and thus reserved for the elite as luxury goods, etc
- exploration of unknown lands would be extremely slow, as most people would only be able to ride half a day out before attempting to come back before dark. I guess occasionally someone could get lucky and manage to explore and stay out in the dark for several nights, but overall this would be extremely difficult and rare. As such, the world outside of known civilization would be very unknown, and people groups not connected by the "day's ride town chain" would be isolated from each other, if they even knew about each other at all.
What do you think? Does this make sense, or do you think society would look differently? If so, what would it look like, and why? Also, What did I miss?