Time  Nick          Message
16:45 MinetestBot   GreenDimond: Jun-04 05:10 UTC <BuckarooBanzai> https://github.com/pandorabox-io/technicmetrics (maybe that helps with your lag issues, it prints out technic-machines that use lots of time)
16:59 rdococ        is there a way to create and store references to entities?
16:59 rdococ        or find an entity through a unique ID?
16:59 GreenDimond   You can always store ObjectRefs (though I think it isnt recommended)
17:00 GreenDimond   Usually it requires creating your on reference map though
17:00 Krock         keeping ObjectRefs outside of callbacks can cause side-effects, such as misbehaviour or even crashes
17:00 rdococ        I want to be able to store information about these entities across server restarts, such as a connection between two portals
17:01 Krock         an entity has its unique ID in core.luaentities
17:01 rdococ        ah
17:02 GreenDimond   Whenever I ask modding questions I struggle to decide if I should ask in #minetest or #minetest-hub.. where should I ask modding questions usually?
17:03 Krock         both
17:03 GreenDimond   :I
17:03 Krock         here it's rather about servers, but since this channel's creation I've seen that most modding questions are asked here
17:04 Krock         either that or I miss the questions in #minetest due to other discussions which run in parallel
17:04 GreenDimond   This channel has more people that are likely to understand advanced issues, yes?
17:04 Krock         same people are in #minetest
17:04 GreenDimond   True that
17:04 GreenDimond   One would hope, at least
17:13 rdococ        maybe there should be channels where it's more obvious what it means
17:13 rdococ        e.g. #minetest-mods and #minetest-core instead of #minetest and #minetest-dev
17:28 rdococ        is texture escaping required for anything other than : and ^?
20:42 rdococ        is there a mod to visualize facedir?
20:43 GreenDimond   the rhotator screwdriver does a pretty good job of it, I think
20:43 DS-minetest   visualize?
20:51 rdococ        nvm
20:51 rdococ        I created a testing node with different colors on each face so I can see how facedir works
21:42 rdococ        I'm creating functions to convert up and forward vectors into facedir and vice versa
21:42 DS-minetest   matrices are much more useful
21:45 rdococ        matrices won't be necessary if you're just dealing with facedirs
21:45 rdococ        all I need is an easy way to rotate by 90 degrees in the X, Y or Z axis
21:47 DS-minetest   I'm not sure if this is really easy with two vectors…
21:47 rdococ        hmm..
21:48 rdococ        it'd be better if I could represent them as quaternions
21:48 rdococ        those are really easy to rotate and program with, even if they're not easy to visualize
21:48 DS-minetest   uh quaternions >_<
21:48 * rdococ      hugs a quaternion
21:49 * DS-minetest as a very stupid person didn't make friends with quaternions yet, they are so scary
21:50 * rdococ      hugs DS-minetest, and tells them that they're not stupid
21:52 rdococ        rotation seems much easier with 3 vectors (up, forward, right) instead of just 2, although technically only 2 are necessary
21:52 DS-minetest   you mean euler vectors?
21:53 rdococ        not quite
21:53 rdococ        the vectors I'm describing are unit vectors that point in the relative up, forward and right directions of a specific orientation
22:40 rdococ        what euler angles does minetest use?
22:40 rdococ        I
22:42 rdococ        I'd expect minetest to use YXZ relative euler angles, or ZXY absolute angles
22:42 DS-minetest   yes, this is correct
22:42 DS-minetest   (I think)
22:43 rdococ        yeah. yaw, pitch, roll
22:43 rdococ        before tackling facedirs, I'm creating some functions to rotate euler angles. under the hood, they'll convert them to quaternions first, and then back
22:45 rdococ        I do wish that irrlicht just used quaternions, it's ridiculous to deal with these conventions and other problems like gimbal lock
22:47 rdococ        looks like entity rotations have been fixed to yaw-pitch-roll as of 5.0
22:49 DS-minetest   ?
22:49 DS-minetest   fixed?
22:49 rdococ        there were issues with rotating entities in previous versions, but in 5.0 it was changed to yaw-pitch-roll
22:50 rdococ        well, that's the impression I get from reading github issues from 6 months ago