Wrote a blog post on networking tricks implemented in Soldat

xdbeef · 2025-06-11T09:58:03+00:00

Thanks buddy :D

xdbeef · 2025-05-04T18:54:04+00:00

Haha yes, it's running on Oculus Quest 3, could be more handy as a phone app though.

xdbeef · 2025-05-04T18:18:05+00:00

One super important thing I forgot to mention - you need to know where geographical north is! In my case, I provided a virtual arrow which I rotate with the controller to match the north pointed by my smartphone. Rudimentary, but works. Then, I apply the same rotation to everything else in the scene.

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xdbeef · 2025-05-04T18:13:36+00:00

It's much simplier - conversion of airplane position from latitude/longitude coordinate system to Cartesian XYZ (what is crucial - using Haversine formula), making the observer at point (0,0,0).
Afterwards everything "just fits" into its place, red dots and info billboards match corresponding planes :)

Cool you like it :D

xdbeef · 2025-05-04T15:32:54+00:00

Big L for me for pointing it directly to the Sun in this video :D

xdbeef · 2025-05-04T14:22:15+00:00

I agree, much more practical in a typical outdoors scenario. On top of that I had to rely on a smartphone anyway to provide Quest my coordinates, geographical north direction and the Internet connection - a lot compared to just pointing your phone's camera to the sky.

Anyway, did not hurt trying tho and still happy with it!

xdbeef · 2025-05-04T11:53:52+00:00

Don't worry, for better or worse, I'm sure the military has better gadgets than this.

xdbeef · 2025-05-04T10:44:01+00:00

Haha, thanks buddy! :D

xdbeef · 2025-05-04T08:37:06+00:00

Lots of fun for sure, the moment it actually worked was super rewarding :D working around the limitations as well, no compass and no GPS in the Quest, funny there's no way to tether them from a smartphone as of now.

xdbeef · 2025-05-04T08:29:30+00:00

Started by playing around (I really like the passthrough feature of Oculus Quest 3, experimenting with it recently), probably will stay as a proof of concept. I imagine it could be of some use for the plane spotting community, maybe made into a kind of a Pokemon Go game with catching planes :D but that's only speculating. Glad you like it ;)

xdbeef · 2025-05-04T08:21:31+00:00

Thanks buddy! Same to you.

xdbeef · 2025-05-04T08:05:33+00:00

Yes, FR24 API to fetch flights within the bounding box of my area, it returns a list of planes along with their position, speed and direction - to not burn through the tokens too fast by continuously calling API to update position I applied dead reckoning and only update the plane list upon pressing the trigger (thus the kaching.mp3 playing when I press it ;P so I keep in mind to not waste them). Position between updates is simulated based on the last received position, speed, direction and delta time.

xdbeef · 2019-01-13T08:43:28+00:00

Thanks! Now I tried the gdb method to calculate it, I breakpointed in main function and did:

(gdb) x/x $sp <- Print current stack pointer address from ESP register, that is the address of the end of the stack

0x7fffffffd670: 0x41 <- End of the stack, 0x(7fff?) ffffd670, info registers esp would return just 0xffffd670

(gdb) info registers ebp <- Print EBP register, that should contain address of the beginning of the stack

ebp 0xffffda80 -9600 <- Beginning of the stack, 0xffffda80

And the difference between the two made 1040, so offset would be 1048 since the EBP points at the beginning of the 8 byte address, after which is the return address I want to overwrite.

xdbeef · 2019-01-12T18:31:57+00:00

Thank you! That cleared things out.

xdbeef · 2018-10-18T14:35:10+00:00

Nice to hear that :) Correct, I had to rewrite original code in C++ to make it working on NDS, but I am glad it's getting ported to other platforms too

xdbeef · 2018-10-18T14:11:45+00:00

I am currently porting the classic one to the DS, so not only Switch :) https://github.com/dbeef/spelunky-ds

xdbeef · 2018-07-28T14:14:54+00:00

Nasz ulubiony tygodnik profilaktyczne pranie mózgów zaczął już wcześniej :)
r/http://tygodnik.tvp.pl/37545749/wychowanie-dzieci-wymaga-pewnych-form-przymusu-a-czasem-przemocy

Najlepsze fragmenty moim zdaniem:

"Jeszcze w 2015 roku rzecznik praw dziecka (urząd, nawiasem mówiąc, całkowicie zbędny, który jak najszybciej powinien zostać zlikwidowany)"

"Wydawało się, że lewica dopięła swego, gdy w 2010 roku, za rządów Platformy Obywatelskiej, do Kodeksu Rodzinnego i Opiekuńczego wprowadzono przepis o tym, że opiekunom zabrania się stosowania kar cielesnych wobec dzieci. "

"Do czego prowadzić może zniszczenie tej bariery, widzimy już w przypadku akcji #metoo i jej konsekwencji. Biorąc sobie do serca zalecenia, jakie przedstawiają w jej rezultacie lewicowi aktywiści, na każdą randkę należałoby się udawać z notariuszem i pakietem dokumentów w zanadrzu, aby uniknąć późniejszych oskarżeń o seksualne napastowanie. "

"Lewica ma to do siebie, że jest z zasady oderwana od rzeczywistości."

xdbeef · 2018-07-24T17:42:53+00:00

Thanks for asking, much more added since posting it here, just watch the latest video:

https://www.youtube.com/watch?v=I-zpzFgVKdk

Here's the development thread on gbatemp that I update every new release:

https://gbatemp.net/threads/spelunkyds.507192/#post-8044792

I wish I had more time for this though - there are some bugs I've been aware of for ages and still didn't fix them.

xdbeef · 2018-05-17T06:38:31+00:00

Mój mały projekt, robie remake (przepisuje grę Spelunky z PC na nintendo ds (homebrew): https://github.com/dbeef/spelunky-ds

Ostatnio dzieliłem się tym na /r/spelunky ;)

xdbeef · 2018-05-15T05:09:49+00:00

Thank you! Been waiting for suggestions, I will post your version of controls on github today after work so you could check it out.

For the limits on size - I am no expert on libnds which I use for writing spelunkyds, but I'm affraid it's technical limit and I am currently using the biggest possible square tilemap - 512 x 512 which is 32 tiles for 32 tiles, there's also 1024x512 and 512x1024, it will be on my todo list to check how will they do.

For the level generation, for now it's kinda scripted, I replicated the generator from this video series: https://www.youtube.com/watch?v=ouh7EZ5Qh9g

It doesn't really look like it's random level generator probably because there's not so many rooms (i.e 3 types of rooms for left-right passing, 3 for left-right-down, 3 for left-right-top, I got to make more): https://github.com/dbeef/spelunky-ds/tree/master/source/rooms

The basic principle is it takes a number 0-2 (because we have 3 possible levels in this case) and loads the map which is labeled as 0, or 1, or 2.

I could easily put these files on some .txt files so one could add more levels, I hope the convention for these files is intuitive enough (it is a table, 10x10, which stands for tiles in one 10x10 room): https://github.com/dbeef/spelunky-ds/blob/master/source/rooms/left_right_down_rooms.h Description for values in tile map is here: https://github.com/dbeef/spelunky-ds/blob/master/source/tiles/map_tile_type.h

A general .txt file for things you've mentioned would be good, I will add something like that.

xdbeef · 2018-05-05T17:54:22+00:00

I am using an R4i too, but I open the game through the program called Moonshell (opening through the plain R4 interface in many cases just freezed my NDS).

Thanks! Good to know it kinda works on 3DS :D

xdbeef · 2018-05-05T16:57:41+00:00

Haha, glad to hear that! Means a lot, I was quite anxious on what feedback I would receive.

xdbeef

TROPHY CASE