this post was submitted on 22 Jan 2025
565 points (99.0% liked)

memes

11222 readers
2536 users here now

Community rules

1. Be civilNo trolling, bigotry or other insulting / annoying behaviour

2. No politicsThis is non-politics community. For political memes please go to [email protected]

3. No recent repostsCheck for reposts when posting a meme, you can only repost after 1 month

4. No botsNo bots without the express approval of the mods or the admins

5. No Spam/AdsNo advertisements or spam. This is an instance rule and the only way to live.

Sister communities

founded 2 years ago
MODERATORS
Tenthrow
The_Picard_Maneuver
[email protected]
565
Genius (lemmy.world)
submitted 4 days ago by Stamets to c/memes
20 comments fedilink hide all child comments
 
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 5 points 4 days ago (2 children)

Well, even at that level of abstraction, it's a bit weird, because goingToCrashIntoEachOther and dont() both need the information from where a collision is going to take place, so you'd expect something to be passed into dont().

Well, and it's easy to dismiss this stuff as implementation details, but that if-statement needs to run as part of a loop. This loop should probably be on a separate thread, so it doesn't get blocked by other stuff going on. Which means access to the motors needs to be behind some form of mutex, which it needs to be able to acquire fairly quickly. And then, yeah, those implementation details quickly add up to become the part that's actually complex.

[–] [email protected] 3 points 4 days ago (2 children)

The functions just store all variables in a globally accessible JSON file. Compartmentalization is for programmers that aren't capable of writing bug-free code.

[–] [email protected] 3 points 3 days ago

While writing the comment above, I was thinking that there are some ~~uncivilized~~ languages that allow you to call functions in the same class without an explicit self.dont() or this.dont(), so technically you can magically transfer data like that.

But having a variable goingToCrashIntoEachOther in a class would be a bit weird.

[–] [email protected] 3 points 4 days ago (1 children)

The only logical way to coordinate multiple drones like this is to store the json on a local nas and have them take turns updating their vectors within

[–] [email protected] 2 points 4 days ago* (last edited 4 days ago)

I was thinking the drones would use Bluetooth to send the modified json to each other which negates the need for a NAS.

Of course, two different drones may have modified the json nearly simultaneously so the json would need to be timestamped and the earlier timestamp overrules the later one in case of merge conflicts.

[–] [email protected] 1 points 4 days ago (1 children)

Couldn't dont() just be an order to halt and goingToCrashIntoEachOther can be a simple true/false?

So the drones both stop, then start moving and immediately see they will crash into each other so they halt again. Drone version of you go, no no you go

[–] [email protected] 2 points 3 days ago

In my head, the drones were going so fast that just slamming into the brakes wasn't enough and you'd rather have to dodge. Not sure, if that's only in my head or if I actually saw the video of these drones a long time ago.

But yeah, if they are going really slow, then that could work.
Maybe you'd even have them back up a bit and then turn at a random angle before trying to continue flying, so you don't end up in the deadlock you described. 🙃