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j_bertolotti, to godot
@j_bertolotti@mathstodon.xyz avatar

Super-noob question:
I have a very simple 2D platformer with a tilemap to make the background and the platform, and a character with basic movement. I know how to "paint" some of my tiles with the "physics layer" so the character can stand on them etc, but if I try to include a "rigidbody2d", it bounces against my charachter, but passes straight through the floor tiles. Let' s say I am baffled and have no clue which beginner mistake I am making.

lisyarus,
@lisyarus@mastodon.gamedev.place avatar

@j_bertolotti I've probably seen it, but if I recall correctly Brackey's video should cover it: https://www.youtube.com/watch?v=LOhfqjmasi0

j_bertolotti,
@j_bertolotti@mathstodon.xyz avatar

@lisyarus No, no rigid bodies in that tutorial. I have followed it and now I am trying to expand on it, but of course I have no idea what I am doing yet 😬

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

"Businesspeople are smart"
Well, some are and some aren't.
But I have yet to see any correlation between how smart they are and how much their company is valued.
https://arstechnica.com/gadgets/2024/06/report-humane-ai-pin-did-7-million-in-sales-wants-to-sell-for-1-billion

j_bertolotti, (edited ) to random
@j_bertolotti@mathstodon.xyz avatar

In a sense Microsoft is right: schools should take responsibility for GDPR and data protection of their pupils, and stop using Microsoft products.
https://www.engadget.com/eu-accuses-micrsoft-of-secretly-collecting-childrens-data-124141294.html?src=rss

j_bertolotti, to machinelearning
@j_bertolotti@mathstodon.xyz avatar

If you are looking for a #PhD and are interested in working on #OpticalComputing for #MachineLearning (and to spend some time in the UK and some time in Australia), contact me!
Got the funding but the official advert is not out yet. Will update when it is (but the deadlines are going to be short).

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar


A few days back I finished , and I have opinions.
If you don't know it, Spiritfarer is a 2020 resource management game with some platforming element. The general idea is that you are in a sort of land of the dead, and have to collect the spirits of the departed and take care of them until they feel ready to move on.
Let's start with the positives: this is 100% a "cosy" game with essentially no penalty for failing anything beside the time it takes to try again. It is also beautifully drawn and animated, and the idea that you have to keep piling weirdly shaped buildings on your boat gives it a very distinctive vibe.
Despite the fact that there are a large number of largely anonymous souls "living" in the archipelago the game is set in, you only help a relatively small number, and each of them has a well defined story and personality. The idea is that by the time you finally bring them to the "everdoor", you got attached to them and their departure feels emotional. Does it work? It depends. The souls cover a wide spectrum, and different people will resonate with some and not resonate with other. I personally only really felt for two of them (an old kind lady developing dementia and a young kid), but I understand that different people might get attached to different characters.
The moment to moment gameplay is largely about collecting resources, so you can build stuff that allows you to collect more and different resources. It is not a very original game loop, but it is well done and it works. For about half of the game.
Problem is, while you bring more souls to the everdoor, you have fewer souls to attend to, and after a while you find yourself with a ton of pointless stuff.

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar


The human eyes have "only" 3 different colour receptors, so multiple spectra can be perceived as the same colour.
(And this without considering all the ways the signal is processed before you actually "see" it.)

On the left, the absorption spectra of the 3 human colour receptors, with a varying spectrum (shown as a black line) on top. On the right a disk coloured with the RGB equivalent of that spectrum.

j_bertolotti,
@j_bertolotti@mathstodon.xyz avatar

@nish Today I learnt a new word! 😃

j_bertolotti,
@j_bertolotti@mathstodon.xyz avatar

Released into the and uploaded to together with the script used to generate it: https://commons.wikimedia.org/wiki/File:ColorVSspectrum.webm

j_bertolotti, to DnD
@j_bertolotti@mathstodon.xyz avatar

What is destiny? Destiny is a DM that spent a lot of time preparing for the session and is not going to have any of your shenanigans.

franco_vazza,
@franco_vazza@mastodon.social avatar

@j_bertolotti
DM for me it's dark matter

j_bertolotti,
@j_bertolotti@mathstodon.xyz avatar

@franco_vazza With a hashtag I assumed the context was clear 😉

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

Is there a list of news outlets that were once reputable and are now enshittified to the ground?
(Possibly including tech news websites.)

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

Trying to mass-delete old emails from gmail is like pulling teeth 😖
Now I remember why I postponed it for years.

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

Reductionism is easy!
/s

https://xkcd.com/2933/

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

What do Hollow-Earth believers think about Flat-Earth believers? And vice-versa? 🤔

jhertzli,

@j_bertolotti I once came across a toot from a hollow-earth person responding to flat-earther but it doesn't seem to be available.

My comment at time is here: https://liberdon.com/@jhertzli/106348208118783899

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

Jack Dorsey: "The problem with Bluesky is that it has too much moderation" (paraphrased by me)

🤦‍♂️ 🤦‍♂️ 🤦‍♂️ 🤦‍♂️
Help me facepalm, 'cause I am out of hands.

https://www.engadget.com/jack-dorsey-claims-bluesky-is-repeating-all-the-mistakes-he-made-at-twitter-234326121.html?src=rss

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

People studying brains: "We found no correlation between number of neurons and IQ."*

People talking about AI: "If we just add more nodes to our deep neural network we are surely going to create a super-mind!"

SvenGeier,
@SvenGeier@mathstodon.xyz avatar

@j_bertolotti @apodoxus Dunno - to within some range, surely there's some sort of trade between the number of neurons used and the cleverness of their arrangement. I highly doubt that LLMs are anywhere near as well-organized as the human brain, so they may well be in the realm where "more neurons" still gives huge advantages. 🤷‍♂️ At some point there's a diminishing return, and then we'll need to talk about "better structure" (which I, personally, would guess means "more complex structure" - I'm staggered by how 𝑝𝑟𝑖𝑚𝑖𝑡𝑖𝑣𝑒 the current crop of AI really are) but at any one time we might well be at a point where sheer quantitative growth can still beat out real advances...

j_bertolotti,
@j_bertolotti@mathstodon.xyz avatar

@SvenGeier
Maybe, but a mosquito with its ~220,000 neurons can navigate space better than any current neural network can.
@apodoxus

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

Out-of-context 6 y/o: "We are going to ignore the facts."

dougmerritt,
@dougmerritt@mathstodon.xyz avatar

@j_bertolotti
Also in-context politicians.

TonyVladusich,
@TonyVladusich@mathstodon.xyz avatar

@j_bertolotti

your 6 yo is gonna like this world very much

j_bertolotti, to random
@j_bertolotti@mathstodon.xyz avatar

Imagine: you make a game expecting it to do ok. It turns out to be an overnight success, with everybody loving it and your biggest problem is that you didn't expect so many people to want to play it.
Then your publisher gets greedy and makes a large chink of your playerbase super-angry.
https://www.engadget.com/what-the-heck-is-going-on-with-helldivers-2-163829512.html?src=rss

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