archived-code-advanced

[sly grove]

it does though. Or are you saying specifically GetComponents vs GetComponent

I know GetComponent finds interfaces

[cedar ledge]

Yeah there's a difference

[sly grove]

I see

Yeah IDK I tend to avoid those "search the whole world" methods anyway

Probably better to have your own collection somewhere to track the instances yourself

[cedar ledge]

At least according to KyleStaves

GetComponent actually does work with interfaces 😉, just not GetComponents :(

"GetComponents: Possible to use with C# Interfaces? - Unity Forum" https://forum.unity.com/threads/getcomponents-possible-to-use-with-c-interfaces.60596/

I agree

[regal olive]

I've been trying to add a sort of adaptive jump to my 2D Platformer game (if you hold the jump button longer the character jumps higher) and it works fine but only when I use "(Input.GetKeyUp(KeyCode.Space))", if I try to use the "Input.GetButtonDown("Jump"))" function than it just jumps normally, and not if I press jump longer or shorter. No idea why this is happening or how I can fix it.

[regal olive]

The code itself is supposed to work as in if I press the designated button longer, the character will jump higher, and if I press it only quickly or for a second, the character should do a small jump.

[cedar ledge]

Post code

[misty glade]

Does Unity mess with the solution file as well as the project files? I was thinking of putting all my projects into one solution but I'm worried Unity will muck with it

(I currently have a shared DLL project with models/domain logic and a server project with the console application, in addition to the unity projects)

[small badge]

Unity generates VS solution files, certainly. It might modify them less often than the project files, but it will still need to change them whenever assembly definitions are added or removed and when it does I wouldn't expect any local changes to be kept.

[misty glade]

K - but if I add my own projects to the solution, will unity "respect" that or overwrite it? I seem to recall there was some way of getting that to work

but my other projects have their own nonsense in there - post build scripts and stuff, which should be fine since they're in the .csproj; but I just want to make sure unity doesn't trash it

[cedar ledge]

Back it up and try it out

[misty glade]

yeah.. i could.. i hate doing these kinds of things because there's always some narrow configuration thing that I've not realized is important that gets messed up

these projects all have their own (different) github repos too, and I'm not sure where those settings are saved

ah, that's in ./.git/config

ah.. i'm think i'm going to dip my toe into this reconfiguration later/never, i'm scared. 🙂

[cedar ledge]

What is the benefit

[misty glade]

Pretty small - OCD - I want to have one VS window (i have three) and would like to build all instead of having to remember to build the shared DLL first then the other apps. Also, I recently unchecked the "only my code" option in debugging and added the microsoft source PDBs so i could dive into their source, and I didn't realize that allows me to step into my own source in the wrong project

which is ... maybe OK? but weird

[fresh salmon]

Hm, with standard class libraries (non-Unity) what you do is create two projects in the same solution, the class lib, and a unit test project for example, and you tell the unit tests depends on the class lib, and when building it builds the class lib before

Not sure if you can do this with separate instances, or with completely different files.

Maybe a custom batch file that runs dotnet build two times, to follow the dependencies

[small badge]

You might be able to just use your own independent solution in a different location that references Unity's generated csprojs? Frankly that feels like it's unlikely to pay for its own maintenance costs in time saved, though.

[misty glade]

i think I'm going to leave the unity sandbox alone and not muck with it too much. I already have to jump through a couple hoops to get some of my libraries working with unity for various reasons

(ie, copy DLLs to plugins folder, copy generated source to unity's assets directory, etc)

I also don't like how visual studios implementation of preventing a user from viewing/editing the project settings is to just "snap close" it when you try to open properties

I thought something was broken with my VS, I didn't realize that's "working as intended"

[urban leaf]

Hey guys! I want to create some kind of procedual Wall Creation that considers slope and inclines (picture for ref). But on the same time it should be modular - like if you decide to make the wall broader, it should merge the two walls to one (removing the battlement of the existing wall).

Do you have any tips what methods, topics, keywords I should search for? I'm thankful for every help! 😊

[compact ingot]

you may want to follow @OskSta on twitter: https://twitter.com/OskSta, he has many references to all things dealing with stuff like what you describe. At the core of this stuff is almost always a table of model prototypes that get merged together with their neighbours in some sort of graph-structure. The trick is to reduce the state space as much as possible (so you have a change to create all the different models you need), and augment them with clever transformations of the prototype models to make the connections interesting. Depending on the visual quality you want to achieve you might want to look into procedural modelling with Houdini. The fundamental idea is illustrated well by marching squares algorithms (this can be extrapolated to 3D and non-uniform grids/graphs) https://en.wikipedia.org/wiki/Marching_squares

[small badge]

Personally I would think of this as a problem for extrusion techniques rather than generalised procedural geometry? Make models of small segments of the wall (e.g. 1 crennelation+1 window in your image) and string them in a line, bending each one to match the curvature of your landscape. If you need to change the shape of the wall, either modify the cross section model (e.g. by scaling or even bone animation) or just replace it with a different model.

[glass wagon]

Using Rider, what's the difference between Step Over and Step Into when in debug and having hit a break point?

[austere jewel]

step into will enter methods and properties, step over will not

[glass wagon]

Cheers, do they both execute everything they go "over" and "into"?

[austere jewel]

Yes

Though they won't execute it until they pass it

[glass wagon]

Thank you. Yes, noticed this. Very annoying. I suppose these things are good to have, but they feel like 1990.

When I click on a variable in the code, whilst in debug mode, why doesn't the Threads and Variables pane automatically auto-select this variable from its list? If you have experience with 3D apps, like when you select a vertex in the UVW mapping window and the modelling window selects and shows the selection of the same vertex (or edge, or face, or faces, or edges, or vertices etc).

[austere jewel]

You should make an issue on their reporting site and they might add that, it sounds like the kind of thing they'd add.

[sly grove]

Most likely you have another copy of this script where you forgot to assign it

Not really an advanced coding question.

[vagrant stream]

k

[hollow wing]

is there a good pattern when I want a DDOL GameObject exist only once, but add it to multiple scenes?

so Scene1 and Scene2 both have the GameObject in the hierarchy

but if Scene1 loads before Scene2 it's already created in Scene1 and set to DDOL

then Scene2 loads and I want to use the old one exclusively

[stable spear]

You could use a static instance variable to keep track of the first one that gets Awake'd, and discard the others.

[hollow wing]

@stable spear thanks, I am trying that out right now

did you try this before? are there any potential problems that could arise with this?

so in my tries Start() was not called for the "others" - does this mean the GameObject is immediately deleted?

[stable spear]

If you Destroy() it in Awake, Start() shouldn't run

[hollow wing]

that is correct - that's how it happens for me currently

[stable spear]

the potential problems are in the implementation, it needs to be done carefully to avoid races / mistakes

[hollow wing]

but you don't know the details right off the top of your head?

it feels undefined to me

I'm getting weird results here

[stable spear]

show code?

[hollow wing]

one sec please

this should be it

class MyScript : MonoBehaviour {
  static MyScript myScript;

  void Awake() {
    if (myScript == null) {
      myScript = this;
      DontDestroyOnLoad(gameObject);
    } else {
      GameObject.Destroy(gameObject);
    }
  }
  IEnumerator Start() {
    while (true) {
      yield return new WaitForSecondsRealtime(1f);
      SceneManager.LoadScene("Scene");
    }
  }
}

(is there C# syntax highlighting?)

so this is basically what you were suggesting earlier right?

[stable spear]

yea with triple-backtick cs

yea. does this not work?

[hollow wing]

so what it does for me:

if I add Start, OnEnable, OnDisable, and OnDestroy and Debug.Log their names:

it's: OnEnable, Start, OnDisable, OnDestroy, OnDisable, OnDestroy, OnDisable, OnDestroy, .. in this order

what's good is that Start is not called again

but what's broken is that OnEnable is not called again / or that OnDisable and OnDestroy are called to often

[stable spear]

well, Destroy has a delay so it might not prevent the object from being enabled and disabled before destroy

You could see if DestroyImmediate() works better

Or otherwise, you can check in each of the functions if this is the right instance, and if not, exit

void OnEnable() {
  if (this != myScript) return;
  ..do stuff..
}

[hollow wing]

but shouldn't every OnDisable be preceeded by an OnEnable?

like: always

[stable spear]

yes... are you seeing the combined entries for multiple different objects?

print out the gameObject id too

gameObject.GetInstanceID()

[hollow wing]

1 sec

so the OnDisable OnEnable - pairs match with ids

[stable spear]

actually, Unity might skip OnEnable if the object is being destroyed, and do OnDisable anyway. Wouldn't surprised me

Are the destroyed objects being enabled?

[hollow wing]

OnEnable 1, Start 1, OnDisable 2, OnDestroy 2, OnDisable 3, OnDestroy 3, OnDisable 4, OnDestroy 4 ..

(those are obviously not the ids, but this shows which ones are matching)

[stable spear]

yea so I guess destroying in Awake skips OnEnable, but not OnDisable

[hollow wing]

that seems to happen here. but it is problematic in my view

[hollow wing]

never - it would be logged if they were

is that worth a bug report?

after all they may not want to change it because it probably was like that for 5 years now 🤔

they might be aware of it and already have decided against fixing it

also thanks for trying to help

[stable spear]

not sure

I wonder if you do gameObject.SetActive(false) before Destroy, whether that will prevent it from calling OnDisable

[hollow wing]

testing it

nope, same output exactly
added it right before Destroy(..)

[stable spear]

in any case, you can do the instance check this == myScript to protect against any method being called on the wrong one

oh ok

[hollow wing]

for me personally the problem is that this code becomes difficult to maintain

like imagine revisiting code in 5 years and being slightly drunk 😉

[stable spear]

sober up

[hollow wing]

haha

[stable spear]

Do you actually need to override OnDisable anyway?

the main one will never be disabled unless you explicitly disable it

[hollow wing]

right now I don't

it'd get disabled on quit i think though? - just to mention that one exception

[stable spear]

yea, but I wouldn't recommend doing anything important there to handle quit. There's better ways

Multiple better options:
https://docs.unity3d.com/ScriptReference/Application-wantsToQuit.html
https://docs.unity3d.com/ScriptReference/Application-quitting.html
https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnApplicationQuit.html

[hollow wing]

nice thanks

[small badge]

The method I've found nicest is to have a spawner object in the scenes rather than the DDOL object itself. If the DDOL object doesn't exist the spawner creates it, if it does exist the spawner does nothing.
If the object needs to exist in edit mode as well I put it in its own scene that's set up to automatically load additively when the scenes are opened in the editor.

Means you never need to worry about the brief window when two copies of the object exist at once.

[viral frost]

Feel free to @ or DM me if you're able to help me. I'm going to do more digging

[frigid cliff]

Hey guys, I've got a very technical question that's more technical design-orientated rather than coding, i know that's not what this channel is about per se, but the solution will mostly be code, and it's only for advanced devs

basically, i wanna make a game like minecraft, i guess, on the surface (but without infinite dimensions in any direction)

however i want a big part of the game to be anti-gravity stuff, and i want the player to be mostly in caves building stuff with different directions of gravity to manipulate, because that sounds fun!

I figured to make that feel more natural, and less blocky (i know i can do graphics more justice than blocks so i dont really want the world to look that way either, it never looks fantastic)

i would do slopes - 0 degrees, 22.5, 45, 67.5, and 90 (increments of 22.5)

and so the "circle" image i just posted could maybe be a level layout in theory

and just for extra clarity for my idea, this is how the blocks would work on each of those angles

now the question: how to implement it

initially i thought "just make a block of 45 degrees and use one tilemap" but that got complictad really quickly so i think i might do something with 4 different tilemaps entirely, one for each angle

and stitch them together into one tilemap or something, later

not really sure how that stitching would work, maybe just stitch those 4 tilemaps into one mesh shape after the level generates, and then as the player mines out the block angles individually, it could take the mesh into its 4 angles again and then put them back together, im not sure

i do want this to be a 3d game though, so i rendered in blender hwo this would look

those are all the possible block angles on a 3d version of the above shape - but since 4 of those will be of the same rotation, it only needs 1/4 of the actual tilemaps shown there

i hope this is making sense

uh, so basically, yeah. that's my idea for a game, how do you think unity would like approaching this most?

DRG is made in unreal and faces a "similar" issue with caves, they used a method where it programatically approximates vectors to designs they put in

like this, to mine out a cave

maybe the whole blocks thing is bad and thats a better appraoch? maybe i should use 0, 30, 60, 90 instead of 0, 22.5, 45, 67.5, 90 because its a much simpler set of angles and is more performant?

what do you guys think.

final thing ill say is i do NOT mind a technical coding challenge - i have plenty of time to dedicate to this and enjoy the work

[gentle topaz]

how would you have blocks not intersect, and not have any gaps between blocks? If two differently angled blocks are right next to each other—and they are angled towards each other, would they not intersect at some point? @frigid cliff

sounds weird to me, the more standard implementation of this kind of think would probably involve marching cubes

that would also allow for much more diversity

[hard lily]

With enough height the gap will be huge too, I'm interested now too see how that can be connected

[gentle topaz]

like, in my terribly drawn example here, this is the issue I would imagine with your idea. If you are only using blocks, it would not be possible to connect them properly, meaning the player could not smoothly walk atop them

and inversely this would be the issue with inward angles

unless I am completely misunderstanding what you are saying

which is quite possible

regardless, I still advocate for marching cubes

[untold moth]

Yeah. There's no neat way to fit right angle geometry(cubes) into a sphere. It's just logically doesn't make sense.

[frigid cliff]

no, you understand perfectly. that’s why i have the stitching idea

i considered that as a problem too

hmm..,

[gentle topaz]

I feel like the stitching idea is just a crude versions of what marching cubes already does

[frigid cliff]

i’ve never heard of those before

so they sound good! :D

[gentle topaz]

https://youtu.be/M3iI2l0ltbE this is probably one of the better videos if you want to understand it

[frigid cliff]

alrigjt, ill go watch that

oh i think i have heard of these before, long memory

so you'd recommend one big tilemap (3d) of cubes, like minecraft has, but then using marching cubes to create different angles within that for a more smoothed look?

[gentle topaz]

well, it's less a 3d array of cubes and moreso a 3d array of points, then each of the points can either be a vertex in the mesh, or it can not be (for example if that particular point is in open space)

[frigid cliff]

that's a fair distinction!

man this is crazy cool now

[midnight violet]

Why not create the collider after creating the boxes, so you have one collider that is combining the vertices into a smart point 'cloud' for colliders instead of relying on the boxes being stitched together

[frigid cliff]

yeah, that makes sense too

[gentle topaz]

If you want some reference of games that have implemented this marching cube tech, you could look at Deep Rock Galactic

[frigid cliff]

i absolutely agree with Danon, though, that the entire thing sounds like a crude marching cubes algorithm

[gentle topaz]

and just see if its the kind of thing you are going for

[frigid cliff]

THAT'S WHAT DRG USES???

yes it absolutely is and i am definitely using marching cubes now

[gentle topaz]

most definitely

[frigid cliff]

internet's biggest mystery solved, i had no idea how they did that

i even included an example in my question of drg and how they did a similar thing, haha, what a coincidence

[gentle topaz]

they also did pathfinding on the procedural marching cube mesh, which is definitely beyond my skill level

DRG is pretty crazy

[frigid cliff]

yeah that sounds crazy

[gusty rivet]

Anyone have any experience with using gmail to send bug reports? It keeps blocking the login attempts due to "being suspicious"

[frigid cliff]

but also beyond the scope of my game, i think

[gusty rivet]

I made an account just to send bug reports, I don't care who or where anyone connects to it from

[frigid cliff]

thats nothing to do with unity? but uh, try logging in and out or try using an alternate email address

oh, unity bug reports, lmao

[gusty rivet]

unity have a built in feature for receiving bug reports from users?

[frigid cliff]

@gentle topaz well, that sounds awesome. i dont know how many hours you just saved me by reminding me of marching cubes. thank you so much dude!

[gentle topaz]

Luckily, the content creator that I linked the video from always uploads all his projects to github for you to look through. The hardest part is actually generating the mesh, but the algorithm itself is very simple (due to the fact that its already all pre-determined based on a triangulation table that you dont need to make, you can just download it)

[frigid cliff]

still sounds like a fantastic starting point

[gentle topaz]

If you are trying to make this as a passion project long-term, then good luck! I would love to know if you actually figure it all out

[frigid cliff]

yeah!

very short summary but: since i got out of school in june, i've started work as an indie dev which ive always wanted to be and always been talented at, and i have until next august-september to get somethign working for kickstarter/early access

unfortnuately i had to scrap the game i was working on until a few days ago, because it was far too ambitious, but more importantlly, working on it focused on parts of the dev process that made me miserable (animating realistically) and i realised i wanted to enjoy the thing i was working on, alone, for my mental health

so i came up with a game inspired by a collection of: Outer Wilds, DRG, Factorio/Satisfactory, and maybe some Orcs Must Die in there too

[gentle topaz]

pure coding projects are always much more fun for people such as myself as well, the graphics part never comes out how I initially imagined it

[frigid cliff]

right?? so yeah im doing this now haha

[zenith ginkgo]

I like how you removed the entire paragraph haha

[frigid cliff]

hah, sorry

just felt a little off-topic

dont wanna gum up the channel for everyone else

[zenith ginkgo]

This channel doesnt get alot of traction, to me it was on topic, you were explaining what you were wanting to do

[compact ingot]

nobody dares ask here

answers be like: "study math, fool!"

[zenith ginkgo]

Truth

[compact ingot]

discussion here is either about high level stuff or bit twiddling so far

[regal olive]

I'm having an issue with DOTween working properly inside the Editor but not in an Android Build: https://github.com/Demigiant/dotween/issues/528

I am also suspecting other problems such as hidden exceptions, so I'll need some pointers on debugging using my mobile phone through Unity Editor properly (I have set up the Developer Build options but I'll need some help anyways).

[full shore]

Hello,
When loading a theme scriptable object like this one below, will the three assets in the list also be loaded? We only load these objects when we need them for memory management, but was under the assumption that this list of objects will be loaded as dependencies.

The reason why I think its not loading the objects in the list is because when cycling through the appearances, there is a slight delay the first time it loads. This shouldn't happen if everything was loaded into memory properly right?

[flint sage]

It's in memory when that SO is in memory

[full shore]

if instead its holding 3 memory addresses for those assets rather than loading them - is there a way to explicitly tell it to by looping through the list of TeamUniforms?

Oh really? Huh. Im basically referencing that list by index and applying the stored materials to my avatar

[compact ingot]

that kind of memory management isn't possible in unity, if its loaded, everything that it references is loaded also

if you want more control, you can use addressables

[full shore]

So as you state, the objects in the list are loaded into memory?

[compact ingot]

per default all referenced objects are loaded

unity objects and serialized ones that is

[full shore]

hmm, under that assumption, I'm unaware of anything else that would cause it to hiccup the first time I try to grab and apply these mats

[flint sage]

Could be gpu upload

[full shore]

list[0].hatMat = avatar.hatMaterialReference is kinda what im doing when I "cycle" through the appearance (other way around, but u get the point lol)

grabbing the object in the list and applying all the materials it is storing

@flint sage I see- ill research that

[glacial geode]

Hello, im trying to write a code to handle events with "async" cause my intended goal is to, call my events i have registered, but also not cause hanging or micro freezing in my game due to main thread blocking or whatnot

but it seems even though im using async Tasks this still occurs so i am probably missing something

what are your advices on this?

[compact ingot]

in unity plain async (i.e. async void Start()) still runs on the main thread it just doesn't block it, so if you do a lot of things in that async task or awaited methods inside it, you'll still have to deal with the CPU time that takes... if you use Task.Run() to put your task on the threadpool it will most likely run on a different core, but that blocks you from accessing most of the unity API

[glacial geode]

Thank you, ill try to go with that in mind as well

[nova glen]

why is this happening? i'm using photon for the multiplayer

[dense frigate]

Hello, I want to make character customization on my game. I'm working with Pixel Art. I know I can create mesh to select sprite and add animation but this way seen be not work because my player leggs animation is:
https://imgur.com/a/s7r9zzR
So I can't split leggs and anime individually.

Actually I've only 4 directions but I want to switch to 8 (diagonal).
In the case where the solution is to difficult, I'm looking for another solution to allow player to switch weapon (8 directions -> 8 animation per weapon * number of sprite animation)

My idea is to create skeleton and switch animator (example naked animator -> clothe animator). With this, I need only 8 * 6 frames = 48 animations for only one skin. It's to difficult. It's the same way if I split the body in multiple part. I'm little stuck with the way to do this.

I would like a result close to this game in terms of animation, and add a customization as far as possible
https://www.youtube.com/watch?v=Hp7tNAH9Ox0&t=63s

[formal lichen]

How might I go about building a class at runtime and attach it as a component to a gameobject? Looking at https://stackoverflow.com/questions/3862226/how-to-dynamically-create-a-class

[misty glade]

I don't know if that's easily possible, although I'm pretty sure unity doesn't support code generation so that avenue is out

[sage radish]

Reflection.Emit doesn't work on AOT platforms (IL2CPP), so that might not be an option for you.

Why do you need to build a MonoBehaviour at runtime?

[gleaming thistle]

rather than pasting a super long winded thing here, I'll just post my forum link: https://forum.unity.com/threads/hey-newbie-here-trying-to-make-player-turn-away-from-objects-and-walk-to-the-mouse.1200700/
I was just trying to make the player walk to the mouse pos using .position instead of any velocity and if it encounters an object, to turn and go that way. rinse and repeat. anyone able to help me out?

if its seriously too messed up I may just completely rewrite the code, but idk where to start.

ps I am a beginner but i believe this code is considered advanced

[compact ingot]

that text is very annoying to read because of the formatting

[gleaming thistle]

sorry about that. any idea what I've done wrong though? I get the code is messy, but messy code doesn't necessarily mean not-working-code.
when I look through it I can't see any problems with the logic so I'm clearly missing something.
any help or tips at all would be greatly appreciated. sorry for the messy code. I'm still very new to this.

[fervent parcel]

hey guys, say I am running a very large loop in Editor mode, and it feels like unity has crashed but it hasn't it just doing a very large calc, how do I go about showing a progress bar or something?

[long ivy]

https://docs.unity3d.com/ScriptReference/EditorUtility.DisplayProgressBar.html

[regal olive]

I have this system for generating meshes for destructable assets, it works great! Except generating colliders for it is very slow, I can't seem to find a good method for doing so, any ideas? Mesh colliders work well but don't support 2d--

[fervent parcel]

wow thanks, I didnt actually have any hope of finding an answer

[long ivy]

how are you generating colliders for it now?

[regal olive]

Sorry should have specified, i'm using a texture to track the health of each pixel

And a custom quad tree system for tracking the alive state of each pixel

And generating tris based off of the quad tree,

Using the same system to genereate paths for the polygon collider, and just using way to many paths--

I couldn't figure out how to get any algorithm to work,

Thought of a ton of solutions, but they all failed,

[long ivy]

which part is slow? triangulation of the polygon collider? any way to reduce path (or vertex) count?

[regal olive]

Physics 2d.create shape is very slow,

Mesh generation is pretty slow as well,

But I had a idea for just writing a shader to handle it instead

So the mesh genration doesn't really matter,

It's mostly the collider generation

[kindred tusk]

It should be possible. Create the class and use the non-generic AddComponent method.

Sounds like a nightmare though

[royal timber]

I need some help designing a proper climbing system for a SOTC-Like game. Currently, I have set up a skinned mesh collider which also accounts for normals and updates per frame. But, I appear to be stuck trying to integrate a system about clinging onto the deforming mesh and smoothly climbing it. Is there any way I could approach climbing and hanging onto an actively moving skinned mesh?

I need the clinging to be stable because the skins are likely to perform fast, distant movements, so simple velocity inheritance doesn't seem possible.

https://youtu.be/9IFaTBN9wIo?t=2143 I hope this gives an idea of what I'm trying to achieve. I have looked into some development papers on how they used deformable mesh colliders to match the skinned mesh, but never seemed to explain how to actually move and stick to one.

[untold moth]

In my opinion, you'd achieve better results with simple colliders and rb for different body parts.

[royal timber]

I can't - the bodies will be too complex to have simplified primitives

It must use a skinned mesh

[untold moth]

How complex can it be? I'm sure you can approximate the shape with primitive colliders.

[royal timber]

Check the video - I might be making full humanoid monsters with lots of creases and curves

Also I need specified triangle data for this

So mesh colliders are the only practical option

[untold moth]

Okay. You could use raycasts to get points on the collider surface. The problem is when the collider deforms in such a way that the raycasts on the next frame might be completely off. Maybe use the collider vertices as reference point of where the character is relative to the mesh.

[royal timber]

That's the problem - If the mesh moves too fast the raycast will be incorrect

Maybe I could try a spherecast instead?

[untold moth]

Sphere cast would result in similar issues and more. For example, you'll need to make sure the cast starts some distance out of the surface. What if it hits another body part? And how do you know what to use as the origin point for the cast?

[royal timber]

Huh

[untold moth]

The problem that primitive colliders with rb solve is that you know the relative character position to a uniformly moving body part, so even if the body part moves to fast, you can simply take the position and rotation delta to find your correct character position in relation to that body part.

With a huge mesh collider that changes every frame you don't have such a reference point. Aside from maybe mesh vertices.

[royal timber]

I thought of moving the player by calculating the velocity of the nearest vertex and displacing the player by that

It's not difficult to just store the mesh from the last frame and read it back later

[untold moth]

Yeah, that's what I was thinking too.

If so, then what's the problem?

[royal timber]

because I can't have the enemy move too much or else the raycast will go berserk and clip the player into a new place

[untold moth]

If you have the relative position, then you can cast rays with some offset from that relative position and they'll almost always hit in the right place.

[royal timber]

I do have the relative position but in barycentric coordinates

so literally the place inside the triangle

[untold moth]

Then you should be able to get the adjacent vertices positions too

[royal timber]

But then comes the climbing part - how could I move relative to the surface's normal across triangles without falling off?

[untold moth]

and from there get the world position of the point

[untold moth]

Set the gravity for the character to point opposite to the normal of the surface

and rotate the character to always stay up right relative to the gravity direction

Then just move it forward as you usually do

[royal timber]

Alright, right now I have a half-assed system set up, so quick question - how do I move relative to the normal?

It sticks to the mesh by setting the position to a point inside a triangle - extremely accurate regardless of speed

triangle index is always the same unless moved

[untold moth]

if the character's up == normal direction, then it will move perpendicular to the surface.

[royal timber]

Yeah, but how?

[untold moth]

how what?

[royal timber]

How do I calculate the up relative to the normal?

[untold moth]

You just rotate your character. In the most crude form it's just transform.up = hit.normal.

Would probably want to get the rotation of the normal and lerp from current character rotation to that new rotation.

[royal timber]

Also I set a distance limit for the raycast so that if we end up hitting a ridiculously distant triangle, it will refuse to move

Making it so that we can only move to close, neighbouring triangles

[untold moth]

That shouldn't happen unless you have sudden holes in your mesh.

or curves. Like if you have a thin wall.

[royal timber]

I tried moving it under a crease, but in desperation it clamped to a different area of the mesh

So I introduced a distance limit

[untold moth]

you can also make several raycasts from different positions( in front-above of the character downwards and in front-below of the character backwards) to address these edge scenarios. If one of the raycasts return a position that's far away, you check the others to see if you have a sudden turn in geometry.

[royal timber]

I absolutely underestimated the complexity of this system

You sure I shouldn't just spherecast to allow for greater volume?

[untold moth]

You can do a spherecast, but it will have other problems that you'll have to tackle too.

[royal timber]

What problems?

[untold moth]

For example, if your character is on the edge of the geometry that takes a sudden turn in the opposite direction( like a wall or a fence) or a 90 degree turn in geometry, your sphere cast would not give you any info on that turn, so your character will either fall down or clip through geometry.

I mean, you can make several sphere casts instead of raycasts, but you'll need to think carefully of their radiuses.

[royal timber]

So I guess just stick to raycasts for simplicity?

It works perfectly when still, moving around is the real problem here

[untold moth]

Yeah, moving is the problem. The problem is that there are many different cases that one or even several raycasts can't handle and you'll have to write code that handles each of these edge cases individually. There's no generic solution. At least that's what I think.

[royal timber]

Because I depend on triangle and barycentric data for clinging, and moving around I will have to cross between new triangles

Man if only i just made some grappling hook

I could stop here because the hook would never change

Or maybe made the player jump and hope to God they land somewhere on the surface

Just kidding - I want to really push this far

[untold moth]

In one of my projects I implemented a wall climbing mechanic similar to what you have in spiderman.

[royal timber]

Yeah, that would be easy as you only stay on one part of the surface until you detach

But crossing inbetween triangles smoothly and safely is exponentially more difficult

[untold moth]

It was somewhat complex and using the things I've described so far, but it worked. At least with buildings that have right angled geometry(90 degrees angles or something close to it), but then we moved to use new assets and their collider geometry was way more complex. Had to write individual code for a lot of separate cases and even then it's still somewhat buggy.

[royal timber]

I guess that's why SOTC doesn't let you move along creases or when the colossus moves too fast

[untold moth]

Yeah, you've got to put some limitations.

That's how I handled some of the bugs. Just don't allow the player to get into this situations.

[royal timber]

https://youtu.be/9IFaTBN9wIo?t=2573 if you look REALLY closely, the player quickly snaps between 2 places of the fur (crease) before entering back again

And I could imagine being unable to move when the colossus starts vigorously moving was actually a technical limitation

[untold moth]

Yeah, because 2 surfaces were too close. The raycasts probably picked the other surface as the attach point.

[royal timber]

This

I am gonna take a break, but for now try reading this if you're curious

[royal timber]

Alright back

@untold moth

Right, so now I need to get normal-relative movement but my implementation doesn't seem to work

[royal timber]

Alright, did some work on the system and it's really beginning to work now. Rays are now safer with aggressive distance and triangle checks, per-triangle velocity is applied to the raycaster's position to allow for smooth movement on fast moving triangles, and now interpolation can be enabled for smoother movement.

Camera-relative movement is a bit wonky and it jitters on thin surfaces, but those can be ironed out with enough work.

I plan to add support for sharp corners soon

[fervent parcel]

Hey guys, what if I want to implement this progress bar, and the loop is not OnGUI, its on the target script?
https://docs.unity3d.com/ScriptReference/EditorUtility.DisplayProgressBar.html

nvm, found a work around

[dawn spire]

Hi I´m trying to install a Unity Plugin (http://www.monobrick.dk/software/monobrick/) to connect unity wwith a Lego Minestorms EV3. I never installed a plugin, so my problem is: when I run it, it gives the error: 'Application.EV3' is missing the class attribute 'ExtensionOfNativeClass'! I have no Idea how to fix...

please Ping me thx

[stable spear]

@dawn spire Did you import the .dll into your assets folder?

[dawn spire]

in a Plugin folder yeah

or do I need another one to manage Plugins?

I think I read about a Native.dll file or something like this

[humble pasture]

can somebody tell me how to connect mysql database with my unity project and read data?
the databse is on a root server

[misty glade]

If you want to use C# to connect to a mySQL database there are hundreds of pages that answer that (google "mysql c#"). If you're looking to parse data to objects, google "object mapping" or "automapper". If you need help reading data from an existing sql database, google "SQL queries", or saving data to the database (UPDATE, INSERT SQL queries, CRUD operations). Your question is completely nonspecific and broad as it is though, unfortunately.

[cloud crag]

Hello, can you tell me how to make elastic hands? I mean for example my characterr wants to punch enemies with them froom distaance. Or do you know any assset that might help me? thanks

[humble pasture]

The problem is i googled many things and only shit turns out and i downloaded stuff and that stuff didnt work so yeah nvm

[misty glade]

I mean.. you're asking a pretty broad question.. Programming/developing isn't as easy as people think.. my metaphor is that it's like building a building from scratch. You have to know how to do the very small stuff like write a line of code, all the way up to the very big stuff like architect/blueprint/design your project.. Discord is good for the small / narrow stuff, and your question is... unclear what you're asking.. unfortunately

[misty glade]

Anyone ever seen this one before?

Failed to create CoreCLR, HRESULT: 0x80004005

No idea what it's related to. Recompiling didn't seem to fix.. Probably will just rebuild library and/or restart unity?

[flint sage]

Did you just update .net?

[misty glade]

Nope

Something weird is going on with my system though.. restarting unity fixed that but now I'm getting this one:

Internal build system error. Backend exited with code -1073740791.
STDOUT:
[116/162  1s] Csc Library/Bee/artifacts/500b0aEDbg.dag/UnityEngine.UI.dll (+2 others)
[120/162  0s] CopyTool Library/ScriptAssemblies/UnityEngine.UI.dll
[121/162  0s] Csc Library/Bee/artifacts/500b0aEDbg.dag/UnityEditor.UI.dll (+2 others)
STDERR:
tundra: error: Couldn't launch process
errno: 0 (No error) GetLastError: 1455 (0x000005AF): The paging file is too small for this operation to complete.```

plenty of available memory, hard drive space

I suspect one of my visual studio extensions (CodeMaid) is not.. working properly with 2022 .. noticing some weird behavior with it since I upgraded (visual studio) last week

[royal timber]

The paging file is too small for this operation to complete.

This error apparently claims that your paging file is too small in size, not necessarily that it is full

[compact ingot]

the easy way is using dapper, https://github.com/DapperLib/Dapper
the complicated way is using .NET EF, https://docs.microsoft.com/en-us/aspnet/entity-framework
the manual way is using the SDK provided by your DB vendor directly https://dev.mysql.com/doc/dev/connector-net/8.0/ which implements IDbConnection and helps with IDbTransaction.

Generally connecting to a database has nothing to do with unity, and unity provides no help whatsoever. That being said, getting data from anywhere and making it available in a unity project is no more difficult that in any other application written in C#.

[manic stump]

I not sure if im in the right channel but is it possible to get some 1 on 1 help with Inverse Kinematics as i have alot of questions to ask about it. I know there is information on it on the internet but i can quiet get it to work on my project.

[dusky niche]

hey, i have a question, is it better to go high memory or high cpu for an MMO? I'm thinking about going the high memory route, that way, server only has to deal with the calculations when the player goes pew pw or when a client requests validation, doesnt make sense to me why a server should have to handle all the graphic calculations. cause have a server hold a bson document cache for all the online players will never take more than a second to index through and all nessasary data should be super light weight that way. Thoughts??

bw, obviously editor is running up at least 10% of that cpu and the memeory, and this instance is self hosted btw.

[drowsy pewter]

hi advanced programmers

I have problem with unity project can anyone help me?

[humble leaf]

Just ask your question

[wispy maple]

I am trying to refactor(simply rename a class without any namespace or assembly changes) without breaking all the prefabs using it. I have found a MovedFrom attribute as a proposed solution but it doesnt do anything. When I refactor the class all dependencies/prefabs etc break in the editor.
Im i doing something wrong? Heres how I am trying to use it

[UnityEngine.Scripting.APIUpdating.MovedFrom(false, null, null, "EnemyWave")]
public class EnemyFormationWave : MonoBehaviour
{...}

[compact ingot]

MMO will always be bound by network traffic first, memory vs cpu depends on what exactly you want to do but generally, don’t worry about it until you have to. Creating a scalable architecture is the important bit.

[compact ingot]

Rider and VS do that kind of refactoring very reliably. The api migration namespace is not involved in this.

[wispy maple]

I am confused by your answer. The issue is within unity itself not the IDE. If you are referring to the actual renaming of the class from the IDE (in my case its VS 2022) then yes that's being handled correctly. The issue is in Unity especially prefabs that had the script on their component and specific values for each instance that now say they do not have such script

[drifting galleon]

did you rename the actual file name too?

[wispy maple]

The class is exactly the same but the only thing i did was refactor its name from EnemyWave to EnemyFormationWave and all my prefabs are broken and they lose their reference to the script hence also their serialised field values

[wispy maple]

VS does that automatically on refactor

[drifting galleon]

just asking, because it doesn't even recognize the file itself

[wispy maple]

propably because its still looking for EnemyWave.cs instead of EnemyFormationWave.cs :/

Thats kinda ridiculous from Unity not to have a solution for this. Just renaming a class I have to go back and fix a shit ton of prefabs....

[tropic lake]

when this has happened i found renaming it to what it originally was then refactoring in ide helps

[compact ingot]

as i said, this is not a unity issue, you are messing with assumptions that unity makes

internally unity references IDs not script names, so if the old .meta-file is there under the new name it should work

[small badge]

Hard to know whether you have the parameters right without seeing a lot more context? MovedFrom should still work these days (you see it in packages from time to time) but I don't know how well supported it is; I don't think it's officially documented?
If you can't get it to work, the alternative would be to have both classes available at once and write a script that goes through all your scenes/prefabs, switching components and copying the properties over.

[compact ingot]

i'd expect MoveFrom is only necessary if the rename affects library/plugin code in other projects that would require use of the automatic API updater

you can also try [RenamedFrom("Something")] attributes

[small badge]

Though actually, this is a component, isn't it? In that case I would have thought the same as Anikki, that it's the .meta file and guid that matter and as long as that's maintained Unity should find the new behaviour.

The main use case I've seen recently for [MovedFrom] is when using [SerializeReference], since that references types by name rather than by GUID.

[dire viper]

Hello guys, I would like to do a proejct like the cell phase into the game Spore. Something like the picture

But I don't know how to make this smooth sphere merging. I was looking into https://kev.town/raymarching-toolkit/ but it looks like it's not available anymore. Do you have any ideas or solution ?

[wispy maple]

I dont seem to have a package/library installed relating to that function. from a quick google search that seems to be related to the visual scripting/bolt package

[compact ingot]

look at MudBun or Clayxels in the asset store

[dire viper]

Thanks 🙂

[torpid token]

Hi, I am trying to make a mechanic that is converting an array of coordinates to a brezier curved 3d mesh like in this video:https://www.youtube.com/watch?v=jEOFYhqEr4M

I have managed to use linerenderer's bakemesh method but it only bakes flat surfaces to 3d

I am trying to learn how to make it but all the resouces I found focuses on creating flat surfaces

[compact ingot]

3d works on the same principles

[torpid token]

Yes but I cant get my head around it. Where can I find resources to learn to generate a 3d mesh like that?

ProBuilders Brezier Tool is what I am looking for

but I want to learn how to do that

Maybe instead of generating mesh I can manipulate Brezier Shape Tool's position

[wispy maple]

thanks for this info as it triggered a solution for me. Solution: Rename script file within Unity to the newClassName.cs . Open it in VS and instead of refactoring with ctrl+r+r just right click the class name, open quick actions and refactorings and choose the rename type to "filename"

[compact ingot]

the algorithm is this @torpid token:

- let PATH be your path-vertex list 
- let SHAPE be a quad (or any planar shape) mesh 
- let EXTRUDED be an empty mesh
- iterate over all PATH vertices P:
    - place the SHAPE at vertex P
    - orient SHAPE such that its normal points along the PATH-tangent in P with the 
      PATH-cotangent defining 'up'
    - iterate over the SHAPE vertices S:
        - add the shape vertex S to the EXTRUDED mesh
        - create two triangles (a quad) in the MESH that connect the corresponding 
          vertex P with its counterpart and neighbours at the previous P

[torpid token]

That's right, I need to extrude

I was thinking the hard way thanks.

Thanks a lot, I will use this algorithm

[languid glacier]

I'm pondering how you'd implement redstone-like energy systems in to a game where any active source will send a signal to game objects they're connected to within an x tile radius, ya know, like redstone. I'm not sure how you'd efficiently find all possible paths and update them when tiles are added or removed.

anyone have thoughts?

[compact ingot]

you need to build/maintain a graph of all connected tiles and use the usual graph algorithms to find paths. alternatively you can simulate it via cellular automata (i.e. on each 'Tick' of the simulation propagate a signal along the neighbouring tiles until they find a conflict (short-circuit) or their budget is exhausted (resistance), or some other condition)

[vestal lily]

does anyone know if its more precise to represent two thirds as 2f/ 3f or 0.666f (precision has to be to the hundredth thousandths)

[compact ingot]

2.0f/3.0f will give you the most accurate representation of that ratio that is possible to represent as a float. 0.666f is ~0.00066666667f different from that number.

[dusty shell]

ive been redirected to here sooo:

is it possible to ignore the scene view, inspector yada yada.. and create everything from code? the issue is that i want to dynamically load/unload levels read from .ini files.

i dont want to drag&drop static levels

[compact ingot]

maybe you have to explain a little more what exactly you need

[ember temple]

I think they want to create a level without using the scene editor(they are choosing to do it that way as a preference). They don't want to use the inspector either so I directed them here since I have no clue if you could even use scripts if they aren't on an object

[compact ingot]

@ember temple , @dusty shell Put an empty scene in the project and a class like this:

using UnityEngine;
public class App : MonoBehaviour
{
    [RuntimeInitializeOnLoadMethod]
    static void Init()
    {
        var app = new GameObject("App", typeof(App));
        DontDestroyOnLoad(app);
    }

    private void Awake()
    {
        Debug.Log("Awake");
        // continue from here
    }
}```

Could also just put that game object into the empty scene with the component attached and continue with code-only things from there.

[ember temple]

Would it be possible for them to do that and unload whatever level from a .ini file.

[compact ingot]

since you are reinventing scenes, thats up to you to figure out

[ember temple]

I have no clue on why they want to do it that way, 🤷

[compact ingot]

what way?

[ember temple]

Loading levels off a .ini file

[compact ingot]

ah, right

sorry, mistook you for the OP

[ember temple]

I’m assuming it’ll just end up being an empty scene that just loads the entire game on play

[compact ingot]

i'd say it can be helpful to store a level design in an external file if the design is created in another tool

then unity would just build the level on-demand from the spec in that file.

but not using SOs/Scenes/Prefabs and other editor tools seems kinda pointless... why use unity in the first place then?

[hearty merlin]

I need help with something on Unity 2019 I want to have it so where it shows the players speed on the screen but I can't find a answer for it that still works

[misty glade]

Put a text element on the screen (like TextMeshProUGUI), link it in your script, and in your Update() method set the .text attribute of that component.

[hearty merlin]

I'm going to probably need a beet explanation of it such as code examples because I am good at tech and I don't understand that

[dusty shell]

basically i just want to load maps by script and not drag & drop aka hardcode each level

[dusty shell]

teye ill try that

[tropic lake]

this probably isn't advanced code, it's just having a text component and setting that to whatever speed variable you have

[hollow veldt]

public abstract class IVoxelStructure
{
    public abstract void SetVoxels();
    public abstract void GetVoxels();
}``` I want to create an interface for my voxel engine that will allow for interchangeable voxel structures but I'm not sure if this can retain performance benefits for both octree and predefined array structures when used in combination with generators and a universal mesher. Any inputs? Will be using jobs and burst where possible

[mint sleet]

Hey!

    public class A
    {
        public int ID { get; set; }
    }

    public class B
    {
        public int ID { get; set; }
    }

I have two class. and I have 2 list from them.

[flint sage]

Nice

[mint sleet]

         List<A> listA = new List<A>();
         List<B> listAB= new List<B>();

how can I get the unique values of these lists's properties into a new list?

I mean they are not the same objects. But they might have the same value in the object and I want to compare them, if they have the same value, I will add it to my list

thanks

[flint sage]

Either write your own algorithm that adds the IDs to a hashset and checks whether it's already there or implement an interface that determines the shared values and then does DistinctBy

[fresh salmon]

Implement IEquatable, or as Navi said, use a HashSet, and override Equals and GetHashCode in both of these classes so you have your own equality checks.

[flint sage]

I would definitely not do that if there are other values in those types

[gleaming thistle]

ayo, I've been recently making an (albeit very rudimentary and a bit choppy) object avoidance script.
it works fine[enough] for me, but sometimes around the corners it stutters like it's having a seizure.
this of course makes the screen shake from the camera view.

so instead I want to hide the actual player and have a fake player that just follows the players positions.

I'm having trouble getting it to do that smoothly, without falling too far behind, and also without stuttering like the player does.

anyone deal with this type of issue before? I'm not really sure how to make it smoother.

[fresh salmon]

Uh what? That's what GetHashCode is for, to provide your own implementation of equality checking. I use it in a HashSet myself to remove duplicate values spanned across multiple instances and it works flawlessly

[gleaming thistle]

I set the transform.position directly

[flint sage]

Sure, but if you ever want to use a hash based collection somewhere else then your comparison might be fucked as it is not containing other fields on your object

[fresh salmon]

public override int GetHashCode() {
  return HashCode.Combine(field1, field2, field3 ...);
}

[flint sage]

Yes indeed but that doesn't work if you only want to compare the ID field in Kurt's example

[fresh salmon]

In that case yeah, you need your own algorithm

Took the example a bit too literally

[mint sleet]

thank you all!

[hollow veldt]

I have an interface here ```csharp
[ExecuteAlways]
public abstract class IVoxelStructure
{
public static List<IVoxelStructure> structures = new List<IVoxelStructure>();
public string structureName;

    public IVoxelStructure()
    {
        structureName = RegisterStructure();
        structures.Add(this);
    }

    public abstract void SetVoxels();
    public abstract void GetVoxels();
    public abstract string RegisterStructure();
}``` that I'm using for multiple classes.. Is there a way that I can automatically call the constructor on each class that uses this interface, without having to hard-code it in? Instead of using the traditional ```csharp

new IVoxelStructureClass()

[flint sage]

No

Also, not an interface

[fresh salmon]

Yeah that naming is conflicting

[hollow veldt]

Shoot, you're right. Not an interface. I'm rusty

I guess I'll just have to code it in. I was hoping for complete automation

[fresh salmon]

And you could make a sort-of factory pattern for that, declare a VoxelStructure Create() method, that each implementor implements, that constructs instances of your types

[small badge]

Are you saying you want to create one instance of every type that inherits from IVoxelStructure? Or am I misunderstanding?

[hollow veldt]

yes exactly

[long ivy]

with reflection, yes. But you're headed for something that looks overengineered to me

[hollow veldt]

without having to call the constructor manually

I want the overengineering to stay internal so anyone who wants to write an extension can just do so easily without modifying any source code

[fresh salmon]

interface IVoxelStructure {
  IVoxelStructure Create();
}

class StrA : IVoxelStructure {
  public IVoxelStructure Create() {
    return new StrA();
  }
}

^ Factory

[small badge]

Generally the way to do that is to use reflection to get a list of all types in your assembly that inherit from your base class, and go through that list calling Activator.CreateInstance on each of them.

(Or across all loaded assemblies, if you want other code to add new inheriting classes.)

[hollow veldt]

and this doesn't require any external code whatsoever to construct? it's already live?

[fresh salmon]

It's your interface and your classes that implement it. Then use it like you want

[hollow veldt]

I'll definitely look into this, thanks!

[flint sage]

Keep in mind that this increases complexity by a very large amount and if someone defines arguments you need to pass to the constructor then that's very difficult to handle

[fresh salmon]

Yeah this, reflection would not be the best solution here

Another way would be to make VoxelStructure an abstract class instead, and call it in the base constructor.

abstract class VoxelStructure {
  public VoxelStructure() {
    // Do something with 'this' here...
  }
}

class StrA : VoxelStructure {
  public StrA() : base() { }
}

[hollow veldt]

I don't absolutely need to, but I do need a way to call the function when the program starts, both in play mode and editor without monobehaviour

[flint sage]

RuntimeInitializeOnLoad

[hollow veldt]

Awesome. Thank you all for the help! You've all given me plenty to think about. Appreciate you all!!!

[dusty shell]

i think ive gotta rephrase my question:

Can everything the scene viewer/editor and inspector can do, also be done by code?

[plucky laurel]

Certain things are only available in editor

For example you cant bake lighting on runtime, you dont have access to editor libs

[dusty shell]

so i cant create luminiscent objects?

[plucky laurel]

i dont know what you mean by that, you can create an emissive material

it wont emit light using lightmaps

it will just be emissive

[dusty shell]

hm

[flint sage]

Are yo utrying to avoid the editor completely?

If so, I don't see why you'd use Unity

There's lightmapping solutions available that work at runtime

[livid kraken]

If you want to recode everything the editor can do for you just roll your own engine no point in using unity

[dusty shell]

i dont want to re-do everything but i start to feel like unity is a drag drop editor for static level layouts

in which case its probably really not for me since i must create levels from code

[livid kraken]

You can 100% procedurally create your levels

[dusty shell]

how it feels like i MUST drag some 2d/3d object into the scene extrude it etc

[dusty shell]

not procedually but from .ini files

[compact ingot]

They are effectively the same. It does not matter how you decide what to place where, only that you can do it procedurally. Even a regular unity scene spawns objects procedurally from the data stored in it

[flint sage]

Ini files are just as static as unity scene files

Except Unity scene files have better integration with the rest of the engine

[dusty shell]

but ini files can be added later and are thus not hardcoded

[livid kraken]

Doesnt matter one bit if the data comes from an algo or a ini or a http web request

[compact ingot]

I think there is a vast misconception at play here on how a general purpose game engine like unity works

[dusty shell]

i know my question is how to realise it in unity

i know how to read parse the file

[flint sage]

So can scenes with assetbundles

[compact ingot]

Also, the editor is not the engine

The editor is for conforming/managing assets and serves as a fully integrated platform for tools. Basically for everything that would be too slow when done at runtime.

[dusty shell]

ill try to utilize it

ty so far :D

[pearl zealot]

Hello Friends

Good morning

    void AddWrestler(string wrestlerName, string wrestlerAlignment)
    {
        using (var connection = new SqliteConnection(dbName))
        {
            // Open the database for queries.
            connection.Open();

            using (var command = connection.CreateCommand())
            {
                // We want prepared statements, to keep people from trying to inject bad data into the database.
                command.CommandText = "INSERT INTO Wrestlers (WrestlerName, WrestlerAlignment) (@WrestlerName, @WrestlerAlignment);";
              
                command.Parameters.AddWithValue("@WrestlerName", wrestlerName);
                command.Parameters.AddWithValue("@WrestlerAlignment", wrestlerAlignment);
                command.Prepare();

                command.ExecuteNonQuery();
            }

            // Close the database to save resources.
            connection.Close();


        }
    }

is there a reason why Unity doesn't like Prepare()?

SqliteException: SQLite error
near "(": syntax error
Mono.Data.Sqlite.SQLite3.Prepare (Mono.Data.Sqlite.SqliteConnection cnn, System.String strSql, Mono.Data.Sqlite.SqliteStatement previous, System.UInt32 timeoutMS, System.String& strRemain) (at <afb4049b8dec44e9b329b5b9ee3695f4>:0)

My bad, had to add VALUES between the tables and values

[fervent parcel]

hey guys, wth is happening here: this example works

https://puu.sh/IqMEu/2539697d95.mp4

but when I change it to this:

https://puu.sh/IqMEK/a8f9e12b83.mp4

I am losing my mind

[flint sage]

I think it needs to reserve space in the layout event as well

[fervent parcel]

what do you mean?

I mean its the exact same code for both, just using a different way to turn on the bool

why would one bool be different than the other?

this seems to work

somthing wrong with that event

hmmm, maybe its spamming.. which shouldn't really make a difference but I will add a valve and see

[plucky laurel]

GetLastRect can break in some scenarios, list nested layouts afaik

google GetLastRect incorrect

[fervent parcel]

ok thanks bro

[flint sage]

IMGUI works in multiple passes, the layout pass figures out where to draw things and then the draw pass actually renders all the textures and stuff

Your helpbox is now being drawn but nowhere in the layout, this mismatch could be the source of your issue

[fervent parcel]

weird coz if I was to use it to change say the next GUI.Color it works

instead of drawing a help box

[flint sage]

Sure but GUI.Color doesn't change the layout, only the color of the next object

[fervent parcel]

yea I guess that makes sense

[flint sage]

Chances are it's enough to do (event == repeat || event == layout) && rect.contains(mouse)

[fervent parcel]

nop

[flint sage]

🤔

[fervent parcel]

layout isnt even getting called

[flint sage]

😕

[fervent parcel]

this is really annoying 😄

stuck on it for a day

I was going to convert all my info boxes this way to reduce clutter

[flint sage]

I'd try to help you more but unfortunately I'm quite busy at the moment 😅

[fervent parcel]

its ok, thanks a lot for the help

[minor crypt]

Hello! I am using navmesh and I need to execute an event when the route has completed, the script may be disabled so checking the status in the update method is not workable, any ideas?

[formal lichen]

I'm just using this as an editor tool, so not actually building to any platforms with it

[quaint geyser]

Hi! I am not sure if there is a topic specific about shader programming (havent seen it), so I guess advanced code could be the place for it haha

I have been some time looking for some kind of tutorial or documentation that could enlight me to develop a shader that allows a character to be seen behind structures or other characters

[plucky laurel]

stencil

[quaint geyser]

thanks! I will check it out

[plucky laurel]

http://www.redowlgames.nl/2017/01/18/shader-selftuition-stencil-testing-in-unity/

[sage radish]

But do you need these generated classes to persist into builds? That wouldn't work either. The generated types will be lost as soon as the assembly reloads.

[small badge]

If you're using URP, Unity have a tutorial for an alternative method that doesn't use any special shaders: https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@11.0/manual/renderer-features/how-to-custom-effect-render-objects.html

[dusty shell]

public class main : MonoBehaviour
{
    //Second Function to be called
    [RuntimeInitializeOnLoadMethod]
    static void Init()
    {
        new GameObject("Game-Client", typeof(main));
    }

    //First Function to be called
    private void Awake()
    {
        
    }

    //Called before Update
    void Start()
    {
        
    }

    // Called every frame
    void Update()
    {
        
    }
}
``` So this is okay for global always active loops, which are supposed to be independent of scenes?

[misty glade]

er, don't do this

[dusty shell]

how so

[misty glade]

Make an entity, put it in your scene, and put DDOL on it

[dusty shell]

thats the point i dont wanna work with the scene editor

[misty glade]

namespace KaimiraGames.UnityUtils
{
    public class SimpleDontDestroy : BetterMonoBehaviour
    {
        /// <summary>
        /// Simple behavior to persist an object between scenes. To use, attach this script to a 
        /// game object (parent or otherwise) in Unity. 
        /// </summary>
        private void Awake() 
        {
            DontDestroyOnLoad(gameObject);
        }
    }
}

well, i mean, if you're creating unity objects.. the editor is typically how you do so

you aren't supposed to new up game objects

if you want to make an object, you Instantiate() it, but even then you need a prefab to do so

Game Objects aren't scripts or classes - they're objects that contain a number of components, one or some of which may be a script

[dusty shell]

i mean i dont want to work with the scene editor at all

like none

i wanna use the unity engine

[misty glade]

And sorry - this is using my own monobehaviour class, just change BetterMonoBehaviour to MonoBehaviour

[dusty shell]

but entirely with code

[misty glade]

Erm, ok. Then.. if you want to create a complete object from scratch in code, you'll need to jump through some hoops, but it's possible.

[dusty shell]

i mean i wanna go as far as to say i want to create the scene by code

i want to call the scripts from code

i want to create and manage the entire scene and its inherited objects by code

[misty glade]

Sure, I mean, that's possible but it's sort of taking the hard way... but in any case - you'll need to create something that unity will create/execute. If you don't have anything in any scene or any objects in that scene, unity is just going to sit there

[dusty shell]

no drag drop or inspector at all

[misty glade]

That's an odd requirement, but it's mostly possible

you still need one object in your scene as far as I know

your main class is a component in the unity universe.. but there's no instance of the component so.. there's no way to start executing code on it actually I'm wrong, your RunTimeInitializeOnLoad attribute should do that

[dusty shell]

thats the code ive been given by another user

[misty glade]

I suppose that works

[dusty shell]

ive extended it

[misty glade]

I'm not going to lie - it is a very strange way of doing things, and it seems like you're really making it hard on yourself without a (good?) reason for doing so

[dusty shell]

managing everything by code ensures that stuff stays modular

if i start drag&dropping things itll be come a mess very quickly

[misty glade]

Patently false

[compact ingot]

its a lost argument i'm afraid

[misty glade]

So, since you seem new to unity, I wouldn't start out by doing this - trust me when I say you don't lose any modularity in unity by working in the editor - but start out learning how the engine works, and then figure out best practices to do things in code

[dusty shell]

but how will i later add new objects in by say a map file?

[misty glade]

very easily

[dusty shell]

without recompiling the project

[misty glade]

Instantiate() is how you make new game objects in unity

Lemme put it another way.. let's say I have a game where I want to display like.. a mission to a user.. I pop open the editor and design something like this - called a prefab -

This takes like 5-10 minutes

it's ugly but whatever i'm not a designer

then in code, I wire it up so I can Instantiate() this panel whenever i want to show a mission to a user

I set all the labels text values, the icons, the buttons, the progress bars, whatever

If I wanted to design this dialog panel thingy in code, it would be HUNDREDS of lines of fragile, pain in the ass code

[dusty shell]

thats not a problem for me

[misty glade]

manually setting anchors, instantiating dozens of game objects and attaching components to them

[dusty shell]

and not a hindering

[misty glade]

it's not a "challenge" or demonstration of your programming prowess, i'm sure you're an excellent programmer

I'm just saying, if you want to produce anything in the unity world, there are things that you can spend your time on that are productive, and things that aren't

and rolling your own component from scratch will be really tedious and .. not helpful

you want to design your component in the editor, and then instantiate it and populate it and do what you want to in code

[dusty shell]

i understand that its time consuming and probably not what unity was intended for but

if i were to made all unity objects by code, would the final result be inferior to the inspector and scene method?

[misty glade]

far inferior

far, far inferior

[dusty shell]

performance wise?

[misty glade]

it would be fragile, full of difficult-to-diagnose bugs

[misty glade]

exactly the same

[dusty shell]

so the only difference is that i may make human misstakes

while coding

[misty glade]

hm

lemme make another analogy

you're familiar with C#, right?

[dusty shell]

yes

[misty glade]

so .. if you came and said "how can I add a bunch of things to a data structure" i'd say to use a List<T>

you're basically responding with "i don't want to do that, I want to make my own"

you can absolutely do that .. but.. that's going to be a bit of work

https://github.com/microsoft/referencesource/blob/master/mscorlib/system/collections/generic/list.cs

and it's likely to just be worse than what already exists

[small badge]

I don't think that's really true; Unity do it themselves in a bunch of their examples. There are a lot of Unity types you're not meant to create with new, but GameObjects specifically are fine.

[misty glade]

in the unity universe.. you can absolutely make anything you need to from code, from scratch, but it's really going to be a lot of work (like literally 10x as much work, and there's already enough work to do to make anything playable and complete) and with no benefit whatsoever

[sly grove]

Yeah new GameObject() is valid

and AddComponent

if you don't want to use prefabs

[misty glade]

Yeah - you're correct, I just haven't seen that pattern before where people new up a gameobject and add components to it by hand

[sly grove]

I wouldn't recommend it, but it's valid

Prefabs are much easier to manage in my opinion

[misty glade]

I don't have a use case myself for it, but I can imagine there's some situations where you want to new up an object and add a bunch of cool behaviours to it

[dusty shell]

im going to try all options before deciding how to start developing anyway thats what im here for to figure out whats best after all

[misty glade]

Sure, but maybe start with the community-recommended "normal" way of doing things before you start down a path that (I promise you) will be filled with blood, sweat and tears

[small badge]

To be honest the only real use case I've seen for it is creating objects in editor from the GameObject menu (since putting a prefab in a Resources folder just so your MenuItem can instantiate it is really ugly).

Play Mode tests might want to use it too.

[misty glade]

Not to belabor the point, but this is my hierarchy for a WIP scene - each of those boxes is a game object (the blue ones are prefabs so there'll be multiple of them depending on what's happening in the game). Each of those game objects have 1-5 components, and each of those components have 1-5 properties, in addition to 10-20 properties detailing the location/anchors/size of your object. You'll need to set these all with a line of code, in your use case. If you wanted to make this scene, this would be SEVERAL THOUSAND LINES of code just for the initialization. Then of course, you'll want to do stuff with it.

There's just so much going on in any game that.. dealing with the low level stuff is what Unity does for us. You focus on writing code that makes your game fun to play, and to be clear, designing objects in the editor doesn't mean you lose any flexibility or performance - you still need to dynamically create your objects during gameplay.

(and fwiw my game isn't even good or complex 👀)

[dusty shell]

i see and unity is not designed to manage low level accessability

[misty glade]

also untrue, you can absolutely manage it manually..

(you just don't need to)

Unity provides a framework for you to create "gaming" objects in a universe without needing to manually orchestrate updating them every game tick, or figure out physics and timestamps and collisions and audio and drawing sprites and networking (👀) and a host of other things, but you can do any of that manually if you want.. but if you want to do all of it manually then you should just not use unity and write your own game engine (and then write a game with it).. It sounds like you want to do more of the engine work then the writing a game work

But think of unity like a library - there's nothing forcing you to call methods on it or use it, if you want, just write your own, but if you want to use unity in whatever capacity, you can.. you can almost get away with writing very little code whatsoever in unity, or you can write nearly 100% of your game in code if you want, you decide

[dusty shell]

the problem is i dont want to write my own physics engine im happy with using primitive 3D objects and with how the collison, shadering, delta timing, controller input etc is managed

i just dont want to use a drag drop system for the levels instances

and its hard to get both

😅

[gleaming thistle]

assuming that I cannot or won't use the NavMesh, can anyone direct me to where I can get started learning about pathfinding algorithms for a 3d game in unity?

I tried to avoid it entirely by making object avoidance.. but it's not good enough in some cases. I need it to pathfind instead

[sly grove]

be more specific about "3d game"

For example is it grid based?

[gleaming thistle]

I really thought 3d game covered it.
I intend to have things snap to a grid yes.
trying to make a runescape type game.

point and click to move, pathfinding around walls fences buildings etc

[sly grove]

Well for example there are plenty of 3D games on which the gameplay is based on a 2D grid, like Chess or Fire Emblem

[gleaming thistle]

ah

yes it would be 2d grid based

similar to how runescape does it

I could probably find some script I could copy paste and have things work, but I'd like to know how it works, otherwise I can't really diagnose it if any issues arise.

[sly grove]

You can use well known pathfinding algorithms like Djikstra's algorithm or A*

And please do not mix up the A* algorithm with the "A* Pathfinding" asset that's floating around

[gleaming thistle]

see this is why I'd like to know how it works. lol

because I'd have no idea whats what

[sly grove]

right

so start researching those algorithms

I'd say start with Djikstra's it's a little bit simpler

A* is basically Djikstra's algorithm with a small optimization

[gleaming thistle]

yknow any good videos on it in particular or should I just start googling things?

[sly grove]

not off the top of my head, no. I learned these algorithms in school over 10 years ago.

[misty glade]

what a youngun we have 🙂

@gleaming thistle PB's right though. A* is a good place (may not necessarily be for beginners, though, depending on your background in programming and/or math). It's somewhat of a "solved problem" though so .. depending on what you're trying to accomplish, I wouldn't try to reinvent the wheel too much. For a lot of things in game dev, it's OK to not know how the internals of a library/algorithm work and instead just invoke it.

as the meme goes.. https://img.ifunny.co/images/3af009ef9b752bcdf0beb0ced17a603548a4563ebfcadd70035364dee81989ca_1.webp

I (accidentally?) wrote my own tweening library when I first got started in game dev and now I'm a bit too pot committed to just use something better

[gleaming thistle]

I spent hours making an objectavoidance thing just to realize that in the right case of 3 walls and trying to move past the back one, it would never get to the spot. lol.

just does lil circles

and I get that I may not ever fully understand the path finding algorithm but I feel like I should at least try. that way if something goes wrong on my side, I can probably correct it

otherwise I may not have any idea what went wrong

[misty glade]

Yeah, definitely. Lemme dig up this video I watched recently on implementing A* and some challenges and solutions

It may or may not be super helpful but I enjoyed it.. standby a sec it was a few weeks ago (digs through youtube history)

found it https://www.youtube.com/watch?v=yqZE5O8VPAU

again this may or may not be relevant, but it's an implementation of A* and a post mortem of how it worked for a really difficult AI pathfinding problem

watching it might just give you some insight into the algorithm to get started

(it's long, but I enjoy these videos while doing housework/cooking/commuting or whatever)

[gleaming thistle]

ironically I'm playing runescape while watching these videos rn lol

[formal lichen]

Right now I'm saving the type to the file system

I've broken it up into two parts now. I generate a new class and save it to the file system. That part is done. The second part is getting that class and attaching it as a component to a gameobject. I run an assetdatabase refresh between these two steps so the assembly is aware of the existence of such a class

[cursive horizon]

https://www.redblobgames.com/
several pathfinding ones in there, depending on what you need

[formal lichen]

Was able to get it working. I can put in my editor the name of a script I want to generate. After generating, it finds the class in the project and then I call AddComponent(GetGeneratedType(state.StringName)) cs private Type GetGeneratedType(string asPresentationStateName) { // Get the type for the new generated class // This one liner gets every monoscript in the project. It is hideous. List<MonoScript> scripts = Resources.FindObjectsOfTypeAll(typeof(MonoScript)).Cast<MonoScript>().Where(c => c.hideFlags == 0).Where(c => c.GetClass() != null).ToList(); foreach (MonoScript script in scripts) { if (Regex.IsMatch(script.GetClass().Name, $"{asPresentationStateName}")) { return script.GetClass(); } } return null; } Any improvements welcome. Right now it works great and I think it's neat

[devout hare]

$"{asPresentationStateName}" is the same as just asPresentationStateName

[formal lichen]

oh thank you, my brain always types out new strings like that since I do inline variables a lot

[cursive horizon]

you might find https://docs.unity3d.com/2019.2/Documentation/ScriptReference/TypeCache.html useful

[formal lichen]

I think because I'm just generating a class using StringBuilder and writing it to a file Unity doesn't know the class derived from my Editor script, so GetTypesDerivedFrom is an empty list

[pulsar isle]

What are some cases where C++ usage is justified when using Unity ?

[stuck onyx]

someone correct me if im wrong but for intensive cpu usage operations like pathfinding it might be useful

the library i am using is made with c++

[small badge]

When you're talking to a library that only offers a C++ interface.

[stuck onyx]

This is the code for registering a product for IAP purchasing:
builder.AddProduct(myProductID, ProductType.Consumable);

this is the code to purchase:

m_StoreController.InitiatePurchase(product);```

and this is the callback:

PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs args)

the only thing args gives me is information about the productID that i registered in the store platform (ios,android...)

but what if i want to use that same productID to buy different items ?

like....

having an id called 'monthlyOffer5bucks'

how could i send info about my local product to the transaction?

i tried modifying the Product class adding a new parameter but since belongs to unity i cannnot modify

not sure i explained my self well

[small badge]

Surely the idea is that each product has its own unique ID? Or am I misunderstanding what you want to do?

[stuck onyx]

yeah that seems to be the idea but

i find it quite unlikable since some games have TONS and tons of different products

[small badge]

I'm sure they have different IDs for each of them.

[stuck onyx]

hmmm I see.... please if someone knows a bit more about this let me know i still refuse @small badge 's theory

😄

[mighty latch]

Hey, I'm using the Jsonserializer to create assets and while the loading and saving process seems to work fine in my editor window, when assigning the created file to a component as a Text asset then deserializing it, it seems not to update properly, does saving a VERY LIGHT json file take time?

Or is because the Unity Editor needs to be manually refreshed?

[idle hill]

Not really advanced I just didn’t want to interrupt other chats, but…

How complete is unity’s implementation of .net APIs? I needed a SortedSet and decided I didn’t need to implement my own so I’d use the built in one. There’s only one problem: SortedSet.Clear is not implemented! I checked my SortedSet right after calling Clear on it and it still has the previous values. Even the method’s documentation on VS says To be added.

Am I doing something wrong or did they really leave the method without implementing? I’m using 2020.3.23f BTW.

[sage radish]

Are you sure you're not using some other class also called SortedSet?

[frozen imp]

@worldly edge Collab/job posts forum links are in #📖┃code-of-conduct

[idle hill]

Not according to this

[worldly edge]

thanks

[idle hill]

It magically started working, been having this happen where it starts working after adding a breakpoint or a print

Anyways thanks

[dusty shell]

is there a way to create a skybox from an image on the harddrive in runtime?

[thick birch]

Is there a TCP connection to twitch that fetches Twitch profile pictures?

All the current twitch integrations only have chat name and messages

[iron pagoda]

System.IO question ---> I'm making a script that outputs debug info to a file and backup file. It all works.
However, if the file does not exist, it is created, and it appears that if a file is created, then it cannot be accessed and the script will fail.
Run it again, and it will work fine, because the file now already exists.
Should I add a Coroutine delay, or is there a more elegant solution to this?
https://gdl.space/exakatayey.cs -- fixed formatting

[long ivy]

when you create the file, it returns a file stream which isn't disposed when you try to write it again. File.WriteAllLines creates or overwrites a file by itself, which it can't do because it's already open. AppendAllLines is similar. Deleting your File.Create calls is the easiest way to fix your problem

[iron pagoda]

I see. Then I can avoid using the file stream and create, by simply creating a blank file with WriteAllText, and then Append

if I am to use the file stream, do I need to use the StreamWriter?

[long ivy]

you don't need to necessarily, but it would be easier than using the FileStream directly in your case yes

[iron pagoda]

Alright.
Hopefully, I'll get the functionality I want from this.
Might look more into StreamWriter later if I have to do this a lot.
Considering expanding this to mass-debug properties later on.

Right now, the script I linked finds a Game Object named "Canvas" and outputs the children's names and RectTransform anchors and pivot

Also, thanks for the response :)

[mighty latch]

Hey, does anyone know how to serialize "Color" or create a custom converter to handle similar "recursive" type of classes using JSON. NET for Unity? Thanks

I can of get how you can write custom converters for your own classes, but not how to do it when the class is from Unity and the variable is in another Unity class

[misty glade]

You're looking for "object mapping". I haven't used it myself but AutoMapper is a pretty widely used tool for this problem. https://docs.automapper.org/en/stable/Getting-started.html

If you are converting one unity class to another, I'd write an extension method on both sides, perhaps. Like, say you want to convert a Color to an int (i dunno, just making it up):

public static int ToSharpingInt(this Color color)
{
    return (int)(color.r * 2); //whatever your logic might be
}

Then you can call:

Color c = new Color(1, 0, 0, 0);
int i = c.ToSharpingInt();

[mighty latch]

Ah thanks, I hoped there was a way to create a custom Serializer to handle the tricky types of data

For now, I will just go back to my method of separating my data into the info that needs to be stored on one side and the one that can be instantiated at runtime and contains the stuff that's tricky to serialize

[misty glade]

You can, I mean.. I do, but I sort of hide that since my game designer prefers to use flat data

For example:

public decimal Cost1Mantissa { get; set; }
public int Cost1Exponent { get; set; }

Two fields in the spreadsheet to represent one data point (a BigDecimal - custom data structure).

I simply consume these in my app by adding a getter on this object:

public BigDecimal Cost1 { get => new(Cost1Mantissa, Cost1Exponent); }

So I'm not really serializing it per se, but transforming it into a useful object at run time. FWIW this object doesn't get written back to the database, so you'd need to do the opposite as well for that.

[mighty latch]

Oh okay

Ngl, I'm a bit over my head here

[misty glade]

(ie - write a setter on Cost1 that unpacked it and put the values into Cost1Mantissa and Cost1Exponent)

what are you trying to do exactly? maybe someone can help

[mighty latch]

I'm basically building a node graph to handle dialogue options, so a root node connected to at least one option which in turn is in connected to one or more option,... so a simple tree.
-I created a data class that contains all info pertaining to said dialogue : the text, every option and which dialogue option is connected to which.
-I also created a visual node class that basically presents that information in a decent way but can't be serialized
-I rebuild the graph at runtime any time it's needed

[misty glade]

Custom Class -> JSON: Use Newtonsoft or System.Text.Json to de/serialize
Custom Class -> Another Custom Class: Use Automapper or write your own
Custom Class -> Binary: Use MessagePack or Protobuf

I'd probably use MessagePack, then.. there's a little bit of a learning curve but it works pretty nicely

(this is just opinion, other people use different libraries)

MessagePack can take pretty much any object and convert it into a byte stream (and back)

[mighty latch]

My biggest issue is with dealing with recursive stuff

[misty glade]

I use it for serializing/deserializing data for transport over the network, but you could use it for your situation as well

it would handle all that just fine

So here's a TLDR of how it works:

You create your object and put attributes in front of anything you want it to "know about":

(finding a very trivial example)

    [MessagePackObject]
    public struct GridPoint : IEquatable<GridPoint>
    {
        [Key(0)] 
        public readonly int X { get; }
        
        [Key(1)] 
        public readonly int Y { get; }
    }

After you write your code, you'll run a "generator" on your code (so Unity can compile the source into its own build).

Then, you just serialize and deserialize it into a byte array

GridPoint gp = ...
byte[] packedUpObject = MessagePackSerializer.Serialize<GridPoint>(gp);
/// write/read the bytes to a file
GridPoint newGP = MessagePackSerializer.Deserialize<GridPoint>(byteArrayFromFile);

it just works for all primitive types on your objects, and if your objects have references to other custom types, you just put the attributes on those types as well and it just works, so you can serialize anything you want

It also comes with Unity "shims" so you can serialize unity types as well, in case you had any of those in your objects

In my use case, I can serialize an entire "player" object which contains their username/details, sub objects (dictionaries/hashsets/lists) of "generators" they own, subobjects of those generators with the details of each generator, etc.. a very large object with all the details about a player. It ends up being this really tiny byte array - like a few hundred bytes - and I can send it over the network and unzip it on the other end with one line of code.

I can also convert this object to a JSON object to debug it, but .. it pretty much just works, so I rarely have to look at raw JSON for anything.

[mighty latch]

Yeah, I think my biggest issue is that I have WAY too many objects that can't be serialized so separating them in two classes ends up not being any more complicated

[misty glade]

anything can be serialized 🙂

but yes, you might have to think about representative objects

like.. instead of sending an entire object across the network (or writing to disk), you just use a subset of that for a "DTO" - data transfer object

or your objects might come with a bunch of monobehaviour/unity stuff, so you'd want to create a "POCO" (plain old CLR object, I think?) and then assign that to your unity object, and only serialize the POCO

any of these are going to require you to think about how you format/consume your data, though, and naturally you're going to need to write a little bit of interface code when your objects need to change form or modify another object

I tend to put all of my data in POCOs and then each unity object that renders it has a reference to it - and pulls the data directly from that reference

[mighty latch]

@misty glade So basically combine everything into one class, don't serialize all the fields that are troublesome and initialize them at runtime?

[misty glade]

Oh, no, don't combine it all into one class.. you still want to break your POCOs into manageable objects

but any serialization framework can handle that

ie:

(this is greatly truncated but you should catch the gist of it)

    [MessagePackObject]
    public class PlayerModel
    {
        [Key(3)]
        public PlayerResourcesModel Resources { get; set; }
    }

    [MessagePackObject]
    public class PlayerResourcesModel
    {
        [Key(0)]
        public Dictionary<ResourceType, BigDecimal> Resources { get; set; }
    }

    [MessagePackObject]
    public struct BigDecimal : IEquatable<BigDecimal>
    {
        [Key(0)]
        public decimal Mantissa { get; private set; }
    }

The PlayerModel is a message pack object, which lets the MessagePack library know how to serialize it. It contains a PlayerResourcesModel which is also an MPO.. which contains a Dictionary (natively serializeable) of BigDecimal, which is also an MPO, which only contains primitives (in this case, just a decimal named Mantissa).

I can hold one PlayerModel in memory, do a bunch of stuff to it, then just serialize it into a byte array.. and write that byte array to the network, or to a file, whatever. When I want to recreate my PlayerModel, I just deserialize that byte array and a PlayerModel pops out, with all of the sub-objects automatically populated as they should be

Literally one line of code to save it to/from a byte[]

PlayerModel p = Deserialize<PlayerModel>(someBytes); //load
byte[] someBytes = Serialize<PlayerModel>(somePlayer); //save

decimal d = p.Resources.Resources[ResourceType.Energy].Mantissa; // after loading, this just works

Hope that helped. Gotta run. 🙂

[mighty latch]

Thanks! I understand what you example does but I'm not sure it can apply to my issue

I will read everything back when I'm less tired

[rain cipher]

As an alternative to messagepack, 'ceras' is very similar but has some great features for handling complex dependency graphs and circular references, that are easy to run into with games

[gleaming thistle]

hello.
I'm making a script rn that runs through a loop making copies of an object.
I have a script IN that object that has float values.
from the first script I need to be able to access that specific copies script's float value[s].

I'm referring to each copy with GameObject Tile = Instantiate(theobjhere) as GameObject;
could anyone direct me to how I can access that Tiles script's values directly? if there was only one I could refer to it with private Thescriptsname thescript; and get values that way.. but there's going to be many.

[stable spear]

This is not advanced code... more like beginner code.
Tile.GetComponent<ScriptName>().floatValue

[gleaming thistle]

thank you I am just uber dumb sometimes. I thought it had to be done some other way because I tried to do that and forgot the ()'s.

thanks.

[pastel linden]

I'm testing with compute shaders and for this test shader, it seems only a handful of points are being calculated, and I'm not sure why. I expected all points to be set to one, however only a small percent are set to this, the remaining values are untouched, left at their defaults. The compute shader:

It's a bit fragmented, but here's some compute shader data setup on the cpu

And I suspect the issue is here in the dispatch statement, I've checked the docs, and this feels right, but also seems sus

The input data is an array of length 512x512x512 (basically a flattened 3d array), and the size variable is (512, 512, 512)

[sage radish]

Are you certain your math to generate the flattened index in the compute shader is correct?

[pastel linden]

I believe so yes

but even if the order used on the gpu was different to the one used on cpu, it should still cover all positions right? Wouldn't explain why a bunch of points aren't touched

[pastel linden]

or are you suggesting something else?

[sage radish]

I can't confirm it from just looking at it, but it could explain why some points are missing. It's not just the order that might be different.

[pastel linden]

I just tried running this equivalent code on the cpu (same index), and it works as expected. Is there any other code I could show you to help?

[agile yoke]

In the Dispatch call, are you sure the size there is the same as pointMatrix.settings.size in the other snippets?

[sage radish]

Well, incorrectly set up numthreads and Dispatch definitely can cause this type of error. Your setup looks correct to me though and all the numbers nicely divide into the threads.

[pastel linden]

yes that is the same, sorry it's a bit dis-jointed

[agile yoke]

hm

I can never remember how/if this works, but could it be because you declare the resolution as an uint3 in the compute shader but all the SetVector functions take float-based vectors?

Try using float3 for the resolution too perhaps

[pastel linden]

Ahh that was it, thank you so much!

[agile yoke]

awesome :)

[pastel linden]

I'm surprised that worked for some points but not all of them, I wonder how that was actually set on the gpu?

[agile yoke]

I really wish there was a SetIntVector instead of just SetInt :/

It probably just interpreted the same bytes, that give the right numbers when viewed as float, as uint giving some very different numbers, I think

The result depends on the exact numbers, but it seems quite possible that your if then passed for some id values but not for others

[pastel linden]

right, well thanks again for your help!

[hallow cove]

hello

so, I have a canvas, and I wanna align some items in the middle of the screen

instantiate them so they're horizontally aligned in the middle

one next to each other

it's a pretty simple thing ngl, shouldn't really be in #archived-code-advanced, but I'm too tired to actually manage to do it

[fresh salmon]

No need for code, when you have the Horizontal Layout Group component

[hallow cove]

yeah but I wanna add some fancy animations

actually

I could just have that

instantiate a "move to" transform

and yeah

ok that actually helped thanks!

one more problem

after instantiating the UI elements, they don't scale according to the 4k resolution I gave to the canvas

[dusty shell]

is the job system actually multi threading or do i need to use the c++ winapi multithreading if i want to realise an UDP client running parallel to the game?

[drowsy estuary]

What is the name for this kind of "indexing"?
All I know is that this is what its supposed to look like, but i'm clueless as to what to use as search terms if I want to learn more about it.

[agile yoke]

The job system can do proper multithreading. It's usually used for "jobs" though, in the sense of relatively quick to end units of work you schedule. I'm not sure how well a UDP client presumably running over a longer time would fit, but perhaps one can make it work.

Not sure why your other alternative is dropping all the way down to direct winapi calls though? Just using normal C# multithreading is also always an option.

[dusty shell]

because ive already written c++ applications for multithreading and id be only a wrapper dll required

to make it work in unity

[agile yoke]

I think this is what you want? https://en.wikipedia.org/wiki/Z-order_curve

[dusty shell]

back then it sadly didnt work tho because the other API required single threading xD

[drowsy estuary]

Excellent!! 😄 Thank you so much

[agile yoke]

Ah, being able to take advantage of existing work may make that worth it, I see.

[dusty shell]

and since ive read that unitys UDP API ain't great for grand scale projects

i thought i could just as well do the entire networking low level

and use an interface between unitys c# and the networking code then

but maybe im mistaken about this

im still trying to figure out whats the best way to do things before diving in half way to the finishing line just to realise that months of work are best to be wiped

[agile yoke]

It should be possible for sure. It should also be possible to just write it in C#, using normal C# / .NET APIs though, which would usually be easier. Which one makes more sense for you depends entirely on how much you already have in existing code, and how easy to wrap and use it'd be, which only you can really judge ^^

(Side note: I don't know anything at all about Unity's own networking solutions, so I'm sort of ignoring them here)

[dusty shell]

well ive got most of the work that needs to be done from previous projects ive scrapped for other reasons already done in c++

e.g multithreading, .ini parser, dll injection for .dll plugins

[agile yoke]

If you've never done it, perhaps it's worth trying to wrap and interface with a relatively small existing piece to try it out.

It's definitely also some effort and not exactly seamless.

(e.g. you can generally only bind C APIs, not real C++ APIs)

[dusty shell]

iknow but ive figured out you can

to a degree

but all datatypes have to have the same size in memory or you crash the program

but im still experimenting on how far i can go

[whole viper]

how can i have list of interfaces?

i have skill scripts with ISkill interface

and i want to store them in a list

so when i press 3rd button, i want 3rd skill to function

i can do it but it is not serializable, so cant attach them in the list

[sly grove]

Make a List<ISkill>

[whole viper]

but cant see in the inspector

and attain them

[sly grove]

Do you need to see it in the inspector?

[whole viper]

so i can attach scripts?

[sly grove]

what kind of object are these?

Are they MonoBehaviours?

[whole viper]

yes they are

my mind is not working properly 😄

been hours im working

[sly grove]

Pretty sure you can drag references to them into a List<ISkill> no problem

of course they have to exist and be attached to a GameObject somewhere

[whole viper]

whopsie

i want first element to be healing skill

how can i achieve it without attaching to a gameobject

:/

should i try another approach?

[sly grove]

You can't, not if it's a MonoBehaviour

MonoBehaviours must be attached to GameObjects at all times

[whole viper]

oh

[sly grove]

they can't exist otherwise

[whole viper]

alternative to monobehaviour? 😄

[sly grove]

Just... don't make it a MonoBehaviour

[whole viper]

damn

thanks man!

[sly grove]

ScriptableObjects are an option

they can exist as assets in your project window

[whole viper]

sorry to bother you but it is not serialised in the inspector now

when i remove the monobehaviour 😄

[sly grove]

right it won't be

[whole viper]

scriptableobject worked...

[cursive horizon]

https://learn.unity.com/tutorial/create-an-ability-system-with-scriptable-objects

[whole viper]

thanks ill read that 🙂

[odd ridge]

I have a Player subclass that inherits the Entity root class. I would like to have a function that takes the Entity root class and then detect if the specific Entity class is a Player subclass. Once detected I then want to cast the Entity class into a Player class to modify.

Is this possible? I remember doing something like this before but I can't seem to find it

[cursive horizon]

are you just looking for:

if (entity is Player playerEntity) {
// do stuff with playerEntity
}

?

[odd ridge]

Yes! Thank you

[plush lion]

Anyone has a way to find the size (in distance unit) of a text mesh pro with a given string ? I want to make a field that adapt to the size of my text

[kindred lynx]

Hey, I am using new unity input system so I replaced all my OnMouseEnter on colliders with IPointerEnterHandler and added to main camera component PhysicsRaycaster. My problem is that canvas is blocking raycasts from PhysicsRaycaster even I set event mask to dont react with UI layer, but it still is blocked by UI. It is a bug or I need to do something extra to ignore UI layer? Ignoring other layers works with no problem.

[drifting galleon]

do not crosspost

[dusty shell]

this is what happens when i try to run this line of code in runtime

in my build. however during debug mode when i run it in unitys implemented environment this does not happen and the skybox is created correctly

any idea why?

the try catch is only there because ive isolated the line of code thats causing trouble so i put it into try catch to get the exception printed out quickly

so this only happens when i finalize a build* (Build and Run)

why does the game not find the shader in build mode?

[wicked idol]

Is it in Resource folder ?

might need to add it to list of included shaders ?

[dusty shell]

ahhhh ya ty ive already found a post about that

amplifies the means to try that

is there no other way?

[wicked idol]

make a ScriptableObject that you include in the build that refers to it

[dusty shell]

first of all adding that shader to the build resources worked thanks

[dusty shell]

ill try that now

[odd gust]

does any one know why my bullet some times passes through the wall

[sly grove]

Probably your run of the mill tunneling

[odd gust]

??

[sly grove]

Great explanation here https://gamedev.stackexchange.com/a/192403

[young path]

Is there a reason why a coroutine fails and suddenly calls an unrelated object's code?

Door B->A Unloads Scene2 then loads Scene 1 as it should then it fails and suddenly door B -> C code is executed?

[sly grove]

The code does exactly what you wrote it to do. Step through line by line to see what's happening

[young path]

Then how is it possible it takes a different objects code?

[midnight violet]

the error details also shoudl show you the line where it happens

[hallow elk]

Hey all. Got a weird one. I have a world space canvas being used as a HUD, where UI objects highlight objects on the far side of the canvas. I need to be able to find the point where a line drawn from the camera, toward a target object, intersects with the canvas so I can move a UI element there.

I've tried a handful of things, which haven't worked...most HUD tutorials are focused on screenspace canvases.

the world space canvas 'floats' in front of the player in this case.

[mint sleet]

Hey. It is weird. I could not find the logic.
I have an update method and there is a value changing per frame.
In one second, I have to take 3 of the values and take average of them.

I could not find the proper way to grab those values in update method with good practice.

any idea?

[cursive horizon]

sounds like you want a ring buffer which holds 3 values, and you can push a value in every .33 seconds and then average what's in there when you need to?

[worthy vale]

could something like this help?
https://docs.unity3d.com/ScriptReference/Physics2D.GetRayIntersection.html

[cursive horizon]

i'm not sure on the '3 values in one second' part

maybe you can just average the values every second and read that

[hallow elk]

Not sure. The canvas doesn't have a collider. Should it?

Also, not sure if that would be good for optimization, given this is updating every frame

[worthy vale]

maybe you could have a Plane that occupies the same space as the canvas and use this https://docs.unity3d.com/ScriptReference/Plane.Raycast.html

[mint sleet]

After the image tracker is found, I try to put the 3D object into AR Anchor. But AR Anchor works like that:

  foreach (ARTrackedImage image in eventsArgs.added) {}
   foreach (ARTrackedImage image in eventsArgs.updated) {}
``` @worthy vale  so I need to grab values from "updated" argument. because added gives me only zero.

[worthy vale]

then you would have to do some math to figure out the exact point on the canvas though

[hallow elk]

I'm actually using plane raycast, but it it not working properly, and the UI element flies around for no reason

This is what I have. https://pastebin.com/Mnc0CRPx

[worthy vale]

perhaps you will need to convert the position vector from worldSpace to screenSpace?

[hallow elk]

nothing involved is screenspace. it's all worldspace.

I need to get the point at which a raycast from the Main Camera intersects the canvas, and position the UI element marker at that location.

[worthy vale]

oh.. then.. I am not sure, sorry. Your code seems ok to me, but you might need to put in some Debug.Logs and try to find out why it is acting in this way.

[hallow elk]

Have done that, and I can't figure it out, still.

Should I just be using a physics raycast? Will that be a problem if I'm calling this once a frame? Especially since the use case involves several of such UI elements all updating on the same canvas?

I feel like there should be a simple answer here, but I can't find it.

[cursive horizon]

if you want to hit the canvas, you want to use a GraphicRaycaster

abstract performance questions are pointless -- implement it then profile

[hallow elk]

I tried implementing it via a screen space canvas, but now the blip floats above the object.

[cursive horizon]

a screen space canvas sounds to me like what you want, based on what you are describing

[hallow elk]

It's really not. The screen in question is in world space. I want to highlight an object viewable through the screen, from the perspective of the camera.

[cursive horizon]

maybe a screenshot would help

if that's the case though, i think the plane approach sounds good

a plane to match the screen and then you raycast to the object, hitting both in the proper place

[hallow elk]

What's the syntax to make a plane that matches the screen?

[cursive horizon]

well you said the screen is in world space

is it not a plane? if not, add a plane to it and use that

[compact ingot]

maybe this is all you need: https://docs.unity3d.com/ScriptReference/RectTransformUtility.ScreenPointToWorldPointInRectangle.html

[cursive horizon]

oooh that is handy

[hallow elk]

It's a Canvas. What's the syntax? In the code I posted above, I create a plane based on the camera, but if I can make a plane that matches the screen that's even better.
m_plane = new Plane(Vector3.forward, m_distanceFromCamera);

[compact ingot]

maybe combine with Camera.WorldToScreenPoint

[hallow elk]

How do I use ScreenPointToWorldPointInRectangle?

[cursive horizon]

honestly i would probably add a quad to the prefab instead of making a plane in code

and then just raycastall, get both hit points, call it good

or actually, what i'd do is just put these 'ui' elements in world space as normal objects and float them slightly above the thing you are selecting

and not have to deal with most of this

[hallow elk]

I'm fine with that, too, but it's not working

[cursive horizon]

have you noticed that for every suggestion, all you say is something vague like 'it doesn't work' or 'it moves around for no reason' such that nobody can offer any further help?

[hallow elk]

Yes, I have been working on this for several days and have tried most of this. I am also trying to get you info you need, but get different suggestions and don't want to confuse you

[cursive horizon]

then why have you still not posted a screenshot?

[hallow elk]

I am trying to get you one, and include the info you need.

[compact ingot]

this somehow sounds like something a manager would say

[hallow elk]

Well, I'm a project manager by trade, so.

OK, let's say the target is the red container. I have this UI element that sits over where the container is in the screen. If I take a step to the right...

I want the UI element to move accordingly.

[compact ingot]

well, the solution to what i think you want to do is using Camera.WorldToScreenPoint together with RectTransformUtility.ScreenPointToWorldPointInRectangle

and put your blip at that position in the canvas you have there

[hallow elk]

@cursive horizon Does that work for you? Sorry for the delay on a screenshot; I wanted to make sure it was clear what I'm looking to do

[compact ingot]

gotta tweak the anchor/pivot/size settings, but thats just details

[hallow elk]

I'm willing to try that, I just don't know how to implement anything related to RectTransformUtility.

[compact ingot]

there is plenty of documentation at the link posted above

[hallow elk]

It doesn't have any examples, and attempts to include RectTransformUtility are throwing unhelpful errors.

Do you have any suggestion (from the script I initially posted) how I might implement RectTransformUtility.ScreenPointToWorldPointInRectangle?

Prakkus, are you still here?

[cursive horizon]

I'm redudant if Anikki is around 🤷‍♂️

it seems like what you really want is for people to write your code for you, but that's not really what we do here, and your method of asking is sort of...time wastey

so i wish you luck, but I think Anikki's got you sorted already

[hallow elk]

I'm not asking anyone to write my code for me. I posted my code already, with the work I've already done.
Now i recognize that nobody is 'entitled' to get help, but you asked me for screenshots that I provided to you, and now you're kinda blowing me off. I'm not sure why.

I've already done masses of troubleshooting and gone through documentation for a couple days and have not had any luck.

@compact ingot Ok, so this is what I wrote, I'm testing it now.

    {
        Vector2 ScreenPos = sourceCamera.WorldToScreenPoint(targetRenderer.transform.position);
        Vector2 localPoint;

        if(RectTransformUtility.ScreenPointToLocalPointInRectangle(hudCanvas, ScreenPos, sourceCamera, out localPoint))
        {
            testblip.localPosition = localPoint;
        }
    }```

[cursive horizon]

The screenshots would have been great at the beginning. Next time lead with them! But by then I'd already spent a bunch of time with you without them (after you ignored my initial request for some).

I would just say the same thing Anikki did, though, so I'm not sure what more you want from me. I'm blowing you off because I do this for fun, and I'm not having any fun helping you 🤷‍♂️

[hallow elk]

after you ignored my initial request for some
I didn't, actually. I had to take a couple minutes to set up the scene so that the screenshot I provided would be useful.

But again, you've made it clear you feel your time has been wasted and you don't want to assist anymore. That's your right. Nobody's forcing you to help.

Hey @compact ingot that did it, I think! Going to do more testing but it's looking correct

[gleaming thistle]

ello. I'm currently trying to do pathfinding. I'm having trouble understanding how to set what where in terms of "weight".
I create a grid in a spiral out from the player, checking each one for if it's free or if there's a collision.
once I have that, I set the weight of that gridtile depending on the distance from the player.
then I need to increase or decrease the weight of the tiles relating to the tiles before them, starting from the tile closest to the endpoint? I think? I haven't been able to find code that I could apply directly to this regarding A* pathfinding or anything. maybe I'm just searching incorrectly. I would've simply taken a working example and modified it to fit what I'm trying to do.. but I haven't been able to find it.

basically I need to loop through all of the grid and determine if I need to increase or lower the weight of that gridtile. but I'm at a loss for how to determine that. should I have generated the grid differently or something? any advice at all is appreciated, as I am stuck lol. I've been trying to wrap my head around this for days but I guess my brain is not able to process how this is supposed to work.

higher weight = worse, lower weight = better, of course. from this information I should be able in the end to get a path back from the endpoint to the start.

[cursive horizon]

i point everyone here: https://www.redblobgames.com/pathfinding/a-star/introduction.html and https://www.redblobgames.com/pathfinding/a-star/implementation.html

[compact ingot]

these are beautiful 😄

[cursive horizon]

Amit is the man

[gleaming thistle]

explained wonderfully.
but it's hurting my head.
I've been yet to be able to figure out how to translate this information into unity and onto my graph. :L
I'm struggling lol.