blueprint

[feral ice]

zombiegame

with enum?

[dawn gazelle]

Yep. You change your variable type to map and set the secondary item to an integer...

Then you can do fun stuff like this:

[feral ice]

wow thats usefu

[dawn gazelle]

To get the value out of it:

I'd also recommend initializing the map with the defaults all set to 0, just so you have them there ready to access, even if there is no ammo available.

[feral ice]

ohh so if i have ammo ak i can change it with this new

[orchid garden]

current ammo - current ammo = 0, spare ammo - 0 = current ammo

order of execution

set spare ammo, then current ammo

[tight schooner]

keep in mind that getters (and pure functions) always get the most current value every time a node uses them

Every executed node also re-executes the getters & functions attached to them, effectively re-doing the math from scratch

[spark robin]

Would it make sense to create a temporary array wildcard in a macro that runs several times every tick or would it be a better idea to create an array in the blueprint holding the macro to avoid memory allocating and being freed constantly. Or does this probably like not matter?
Please ping on reply 🙂

[proud hull]

Really you just need to remove one of those subtract nodes, the first one

[orchid garden]

doesn't need to do either, just needs to reverse his set order.

[tight schooner]

@spark robin idk but you can try benchmarking it by making it run 10K times in one frame and then manually calling Garbage Collection slightly afterward and see what those two frametime spikes look like ("stat raw" in the console helps)

[spark robin]

So you think it would affect frame time? @tight schooner

[orchid garden]

ticks are linked to framerate

[tight schooner]

I assume you're asking about performance and doing tests is kind of the only way to answer esoteric BP performance questions

[solemn parcel]

So my projectile needs to slow down the AI character it is hitting. I use the GamestateBP to process the slowing effect. The characters are slowed like expected, but after the delay it does not apply the backward operation : Slowed down to normal speed. Though it does exec after the delay.

[spark robin]

Yeah Idk I were thinking maybe it puts some unnecessary stress on the memory buzz. But Idk anything about how different pc components communicate so 🤷‍♂️

Might do a test

I will just finish my program first and see if it can be optimized later if necessary

[tight schooner]

@spark robin generally speaking reusing stuff (e.g. pooling actors) rather than spawning and destroying things is lighter on performance and the way that UE4 manages memory via "garbage collection" but I can't say with any certainty that, if you do this test, what results you'll get

[proud hull]

Set it back to initial speed, you save it in a variable. Don't do the math after the delay.

[spark robin]

Okay 🙂

[tight schooner]

But also... generally speaking... one should aim to get it working first and then optimize later if performance profiling indicates a problem

[proud hull]

If you want a true slow motion effect, you can also look into using CustomTimeDilation instead too.

[solemn parcel]

@proud hull Tried it, forgot I had this. Still not working

[proud hull]

Maybe use a timer instead then.

[solemn parcel]

Look, the execution until the end is working

[proud hull]

Is this logic inside the projectile? Maybe make the projectile call an event on the actor to have it manage it's own speed.

I'm guessing your projectile destroys itself and that might be causing the issue.

[solemn parcel]

That's why I'm actually managing the slowing effect from an external BP, to avoid the issue of the projectile being destroyed.

But, it actually works, when only 1 projectile hit the ennemy, after 1 sec he find back his initial speed

[proud hull]

It's the delay that causes that.

[solemn parcel]

but when 2 or more projectiles hits the ennemy while under slow effect, it will only trigger the last max speed

[proud hull]

That a retriggerable delay?

[solemn parcel]

I think I got it, while or after a second slow effect, it will Set Max Walk Speed -1 from the first slow effect

[proud hull]

Ah, I see why you did the math after the delay. You want a stacking effect?

[solemn parcel]

yeah ! 🙂

[proud hull]

Gotcha, that makes sense

[solemn parcel]

MaxWalkSpeed=400 Original, on hit -40%=240, after 1 sec, come back to 400. But if -40% while MaxWalkSpeed=240 then it just sets the MaxWalkSpeed to 240

If i'm clear enough

[proud hull]

Base all your math on initial speed and only set it once in construct.

If you re-set it each time movement changes, it will never know what was the actual original speed

Then you can use it in the formula without any numbers changing between hits

[solemn parcel]

So having another variable from the character BP himself, something like 'Initial Max Walk Speed', that won't get edited

[proud hull]

Oh wait, so not stacking?

You just want each hit to reset the timer?

That would be retriggerable delay

[solemn parcel]

Well, I think the more smooth way would be each hit will add a -X set value of slow effect, and Y time after each one of this hits, it add +X on the walk speed.

[proud hull]

Ok so stacking, hehe

Your original code was closest

You just need to save initial speed in construct or begin play.

[solemn parcel]

You're right, i'mma try this right now !

[maiden wadi]

Are you planning on having different slowing amounts for the character at any point?

[proud hull]

40% reduction each hit it seems, right?

For 1 sec

So actually get rid of initial altogether

Your 2nd math is off since it is based on the new max speed value

[solemn parcel]

@maiden wadi Yeah*

[maiden wadi]

Was just going to make the point that if you're planning on having different slowing effects, like one effect does 40%, another does 20%, etc. It'd be best to use an array. Have each index be a slow multiplier and a duration. On effect, update the array, then apply the largest slow effect to the player until it wears off, then check for lesser effects.

[proud hull]

Max speed * 0.4 for first part. After delay, Max speed / 0.4, make sure to round/clamp.

No need for array, this will work multiple stacks in

For instance, speed of 100 would be 40 after one stack, then 16 with 2 stacks, then return to 40 when one stack is done and then 100 when both are done.

[orchid garden]

your using the current ammo after the set, not current ammo before the set.

[solemn parcel]

@maiden wadi Yeah when I'll need it's a good idea to implement it that way. But i'm already struggling for a basic stacking effect, so i'll keep it clear and simple for now, and when i'll move on different slows, i'll do by arrays.

[proud hull]

CurrentSpareAmmo - CurrentAmmo is all you need for setting CurrentSpareAmmo at the end.

[solemn parcel]

@proud hull Wait i'm trying to understand what you said !

[proud hull]

Just don't add an subtract. Only multiply and divide.

Set max speed = max speed * 0.4 >>> delay node >>> set max speed = max speed / 0.4

Easy as pie, well easier, let's see you calculate pi

[sonic cipher]

https://gyazo.com/f1dd3ad9addb9f1129a16bebffbd6ce4 hello, i am trying to save this variable (save game), so when i close the game and reopen it it is still true, thanks you

[solemn parcel]

Wait, If MaxSpeed=100 then 100*0.4=40, meaning I would set the max speed to 40% , and not 60%

[proud hull]

Then multiply by 0.6

[tight schooner]

@sonic cipher look into the save game system if you want to save variables to disk

[sonic cipher]

https://gyazo.com/8820fcaf58c8ba92dd952e6e7a01efa1 so you speak about this node ?

[proud hull]

The logic remains the same no matter how much speed is reduced, hehe

[tight schooner]

@sonic cipher yeah. See: https://youtu.be/_4usRrTiqak

[sonic cipher]

thanks i'm going to look 🙂

[solemn parcel]

@proud hull so it works def easier that way, you are right, thing is the main problem is still here, the stacking set the MaxWalkSpeed to the precedent one.

I might miss something easy here

[proud hull]

Can you show what you have now?

Using math should do it, no matter how many stacks are on.

[solemn parcel]

@proud hull

[prime moss]

Pls tell me

[proud hull]

Are you only applying this to one character or will multiple trigger this?

[solemn parcel]

@prime moss just in case, are you tiping the good inputs ? Check in ProjectSettings

@proud hull This comes directly from the ProjectileBP

StatusIce is the the event from the slow effect BP.

It apply that effect to any character overlapping the projectile

Once on this case

[proud hull]

Your references in RoundState will keep switching to whatever last called the event.

You are better off making an event in the character/pawn itself and have that event simply change the max speed and do the delay.

Then have RoundState call that event for the actor

For instance, I hit NPC1, they slow down, but then I hit NPC2, they slow down, but now the delay uses character movement variable for NPC1's delay, but character movement variable has NPC2's character movement saved in it.

[solemn parcel]

you are right

was scared of this

but even then

[proud hull]

Just move your logic into the character. And all is good.

Just the max speed stuff.

You got all your references already, the hard part is taken care of.

[solemn parcel]

before thinking about multiple targets, the max speed doesn't come to the inital one with that code, on a single target

[proud hull]

It should... 100 * 0.6 = 60, then 60 / 0.6 = 100

[solemn parcel]

I wanted to centralize these effects on one BP, simply because I have different types of 'ennemis characters' that are all parents

[proud hull]

Seems to me like you made yourself a middleman that isn't really necessary, hehe

Honestly, you could have projectile hit directly trigger the slow movement event inside the pawn/character if the logic was moved there.

Otherwise, if you want to use a "manager" actor, you cannot save references like that. Would have to be its own function and set local variables.

Which is another option really, turn that into a function within RoundState, and you can use local variables.

[sonic cipher]

thing is that i have to make it in gameinstance because i want to show it in menu

[solemn parcel]

Look this is what is happening. I'm using 0.6 as reference of slowing effect. MaxSpeed=400. Character gets hit once, MaxSpeed=240, Then delay 1.0 sec, then MaxSpeed=400.

[proud hull]

Isn't that supposed to happen?

[solemn parcel]

When Character gets hit 2 times before the delay is passed, it MaxSpeed=240 on first hit, then =144 on second hit, then delay, then MaxSpeed=240

The second text isn't supposed to happen, the first part, first hit yeah

[proud hull]

Initial speed = 400
Hit 1 = 240 (0.25 seconds passed)
Hit 2 = 144 (0.75 seconds passed)
1 second passed = 240
1.75 seconds passed = 400

That is the current setup

[solemn parcel]

yeah, and it does not happen that way fully. The '1.75 seconds passed = 400' part doesn't happen

[proud hull]

I dunno then. I suspect it is the delay messing everything up which is why I avoid them like Corona.

Delay node = worst node ever created

And everyone uses it way too much

[solemn parcel]

Any hit after the delay is starting to be executed until the end of it's execution, will only apply the negative formula, and once the delay is executed, the positive formula will be applied once.

it is definitively the delay that fucks this up

[proud hull]

I'm fairly certain this would solve itself if that logic was inside the pawn/character and your RoundState simply called that event for the pawn/character.

That way each pawn can manage their own speed, but have the RoundState manage their event calls.

[solemn parcel]

I'll go for this way anyways, seems like the most safe one. Thanks for your time, a lot !

[proud hull]

No problem. If it still isn't working after making the switch, let me know. I can actually open a project and try to create it real quick.

[solemn parcel]

I'll make a try of copying everything on the AIcharBP after my cig and I tell you 😉

[proud hull]

Smoke break, good idea.

[orchid garden]

incase anyone else wants this... simple reload function:

[orchid garden]

and coffee!

[proud hull]

Now do it with only 1 return node and no branch node. 😜

[gritty lintel]

How can i open this?

[west sky]

Can't

[gritty lintel]

I need it for an auto landscape material

[orchid garden]

what do you mean by open it?

right click and convert to parameter? is that what you mean?

[orchid garden]

still not understanding what you want... you need to be a little more clear.... maybe....

[gritty lintel]

i got the vertexnormalWS which i have to multiply with a vector that has 1 on all the three axis

[orchid garden]

points to previous pic

[west sky]

High benefit of watching a beginner tutorial for materials

[gritty lintel]

Guys i made it

It was a Constant 3 vector

[proud hull]

Bam! So simple, hehe.

[primal smelt]

So I'm having a play about with adding force to objects. You can't add a force to an actor itself, you have to add it to a mesh component. This is fine and I'm getting the desired effect but one thing I noticed is that doing a getactorlocation on event tick (just to see) does not update the coordinates of the actor's location. It seems like the mesh is moving around but the actor is still in the starting location it was placed. Is this anything to be concerned about or is this behaving as expected?

[solemn parcel]

@proud hull So i've didn't made the copy still, but I was thinking that I would have the same problem anyways, concerning the delay. Simply because once a delay starts it dosn't get any more input until finished, except retriggerable delays, but that isn't what I want !

Is there a way to make a timer or delay to be executed multiple times ?

[primal smelt]

Timelines have a 'play from start' pin which can be triggered multiple times however you want

[proud hull]

Do they run concurrently?

Like same timeline node, play it two times at the same time

[primal smelt]

You can have multiple tracks running at the same time, they can either execute on an update, execute on finish or with an event track execute whenever you want

[orchid garden]

nope

[proud hull]

Just tested, it doesnt

[primal smelt]

So if you had two things you wanted to execute after, say, 5 seconds - wait - and execute another 5 seconds later are up you can set the length of the timeline to 10 seconds, add 2 event tracks with 2 keyframes each at 5 and 10 second mark, they will have their separate execute pins and will fire off concurrently

[proud hull]

Best solution we came up with before was limiting the number of stacks and make a separate timer for each stack.

You premake these timers in begin play, save their reference, then you can use them over and over for anything with a delay.

[proud hull]

I see, so essentially the same thing as what I explained with timers, just the timeline version.

[proud hull]

Timelines are easier to setup, so go with that.

Wait, how do I run them concurrently, not seeing any extra exec pins when adding more tracks.

[primal smelt]

So I'm having a play about with adding force to objects. You can't add a force to an actor itself, you have to add it to a mesh component. This is fine and I'm getting the desired effect but one thing I noticed is that doing a getactorlocation on event tick (just to see) does not update the coordinates of the actor's location. It seems like the mesh is moving around but the actor is still in the starting location it was placed. Is this anything to be concerned about or is this behaving as expected?

Anyone able to answer this please?

[primal smelt]

Make sure you select an 'Event track'

[proud hull]

Ah, I was using float, my go to when messing with timelines. Never really messed with the other options, haha.

[primal smelt]

I've played about with them quite a bit, they're pretty versatile. You can also swap out tracks on the fly in blueprints using external curves - if anything makes it a bit neater than having a ton of tracks on one timeline!

[proud hull]

This executes all of the event tracks every play.... Need them concurrent, but activated one at a time.

[primal smelt]

Are you using the 'update' pin?

[dawn gazelle]

This would not work. You would effectively be giving your player ammo that they may not have as you're adding ammo into your current ammo without checking your spare ammo.

[primal smelt]

If so you don't want to be using that

Use the indivdual exec pins from the event tracks

[proud hull]

Nah it works, tested already.

Adding the difference of magazine - ammo

So if you reload when not empty.

[solemn parcel]

Thanks for your time guys, i'll read this again after my little lunch. So at the end there is a way with either delays, timers or timelines to make each one of them execute multiple times on the same exec ?

[dawn gazelle]

Current Ammo 8
Magazine Size 12 (Wouldn't change)
Spare Ammo 2

(Magazine Size - Current Ammo = 4) + (Current Ammo 8) = 12. You've given them 4 Ammo.
Spare Ammo 2 - (Magazine Size - Current Ammo = 4) MAX 0 = You've removed 2 ammo from spare.

[proud hull]

Oh, you are right, I didn't test to empty spare ammo, my bad, can clamp that easily

Bug-free version

Now convert to C++ and you got yourself one really efficient reload function.

[left carbon]

Did anyone had issues with DataAssets, where they are NULL in packaged builds?

Everything works fine in editor, but all the references are None in build..

[worthy frost]

did they get cooked out?

[proud hull]

Add them to "Additional Asset Directories to Cook"?

[left carbon]

Well, that's a good point, but it works in Windows build but does not work on Android..

But in other project I had the same issue with Windows build.

[proud hull]

Or if it is cooking messing it up, add them to "Directories to never cook". I've never messed with this stuff, just guessing, but I'd troubleshoot in that route.

[sonic cipher]

if someone can help me with a savegame please, i can't make it work

[proud hull]

What you got so far?

[sonic cipher]

i have a menu, in this menu i have 1 map, then when i play if i overlap a trigger so i unlock the 2nd map in the menu

problem is that if i close the game, 2nd map is locked again (hidden button)

the overlap
https://gyazo.com/5859f3bc4ad630e137a175206cdebbc5

[proud hull]

So you are trying to save that progress.

Have you made a save game blueprint yet?

[sonic cipher]

yep, i would like to save the variable

i show you the save game bp

https://gyazo.com/766a2d6376e48f1538c08d0284255afa

[proud hull]

Can I see what is further left too?

[sonic cipher]

https://gyazo.com/47774556ea2c7e970aedfd924f4e3615

i hope you can see good

[proud hull]

Looks like you are saving correctly. Where do you load from that save slot to then populate your variables?

[west beacon]

Hi, I'm trying to add instance of my dirt block. But blocks are spawning on my head (acc on my camera). How can I solve this?

[proud hull]

Unless you are reading directly from the save game for everything now.

[sonic cipher]

I load from the same BP, in a function called LoadGame : https://gyazo.com/ce123484ebe9b7b8d709024919c7d300

[dawn gazelle]

I think this is right @_@

void AFunctionLibrary::Reload(const int CurrentAmmo, const int MagazineSize, const int SpareAmmo, int& NewCurrentAmmo, int& NewSpareAmmo)
{
    int DesiredAmmo = MagazineSize - CurrentAmmo;
    NewCurrentAmmo = CurrentAmmo + (FMath::Min(DesiredAmmo, FMath::Max(SpareAmmo - DesiredAmmo, 0)));
    NewSpareAmmo = FMath::Max(SpareAmmo - (MagazineSize - CurrentAmmo), 0);
}

[west beacon]

Like this

[solemn parcel]

@proud hull Just to say thanks for your time, even tho I will stack only on substract and not on addition. Design wise will be better 😉

[proud hull]

Haha, you actually did convert, that is great.

[proud hull]

You then plug the return info into where it needs to be saved?

[sonic cipher]

Hum, i guess so :v

[viscid shard]

if my player_BP collides with WayPoint_BP how can i get Which collision sphere was collided, i have 2 one largeone for discovering the waypoint and one inner one for using waypnt

[proud hull]

Where do you call your load game function?

[sonic cipher]

It is not my blueprint i'mm trying to edit it to save this variable :v

[sonic cipher]

https://gyazo.com/df6a38b0a9b22ee8de14ab27386689bc

i think it is where it is called

https://gyazo.com/6898f40c0e22f73657b560b2129ed1b9 i have this too in the bp

[proud hull]

In your main menu, where do you use the save game info? You should be calling Load Game somewhere to set the variables in your main menu to match what is in the save game.

[west beacon]

Hi, I'm trying to add instance of my dirt block. But blocks are spawning on my head (acc on my camera). How can I solve this?

[proud hull]

Use Actors to Ignore array input.

[sonic cipher]

Hum, is that possible that it is called when i start ? it launch mygameinstanceinfo maybe ? because the nodes that i showed you are inside it and it is in my project settings https://gyazo.com/410bcdf026986388fbef76afccbc123a so does it get called here ?

[west beacon]

How can I do?

[proud hull]

Just because the function exists, doesn't mean it gets called. You need to have your main menu load from game slot and set the variables it uses.

[sonic cipher]

i think you have to drag actors to ignore > make array and add your actor

[west beacon]

What actor should I ignore??

Camera or something?

[sonic cipher]

your dirt block

[sonic cipher]

i'm going to try to find where it is called ^^

[proud hull]

Dirt block, player character unless this is in player character bp and you have ignore self checked.

[west beacon]

I get this

[proud hull]

Right click the function, find references, then click binoculars to find references in all blueprints.

[sonic cipher]

https://gyazo.com/c5bcbcdbfcd8dab351221f7f7d011b8c oof lol

[west beacon]

I get this error

[proud hull]

Maybe try this trace instead.

[sonic cipher]

https://gyazo.com/04cba0c6096ece7c566c7737e644d1ac i think it get called from PC_lobby (player controller)

[proud hull]

Do you see it in your main menu widget?

[west beacon]

Same thing happens

[sonic cipher]

hum no i don't think so

[west beacon]

btw, I'm following this tutorial https://www.youtube.com/watch?v=fjt6O0h2Dyo&list=PLZ7R1eB0AmM-1duebqThOg0zsjESkSmkj&index=5

[proud hull]

Wow, that guy is hyper! lol

[west beacon]

I want to solve this pls 😦

[proud hull]

The cylinder in the screenshot is your player character?

[west beacon]

I made cylinder for seeing the player. Normally its transparent charactrer.

That object doesnt affect anything

[proud hull]

You sure? One of your first screenshots it looked like the trace hit that character.

This one: #blueprint message

[west beacon]

Wait a sec

[proud hull]

That tutorial series was for first person view, so no character should get in the way of the trace.

Or at least I only saw first person view in that particular video.

[sonic cipher]

https://gyazo.com/fe181388a25d717710b8aae266bcff0b i think i found where it is called

[sonic cipher]

maybe try to check overlap on the visibility and camera of your character mesh

[proud hull]

Ok that looks better. So all your blueprints read from that Player Settings variable?

[west beacon]

My dum head. Thank you so much 🙂

[solemn parcel]

This would cast to all actors of EntityCharBP right ? Not the Other actor from input only ? If so, how can I launch the event on THAT specific actor ?

[sonic cipher]

i think it does

[proud hull]

Nah, your character's dumb head got in the way, haha.

[proud hull]

That would run only for that specific actor.

[proud hull]

Check your main menu blueprint and where does it test whether or not you unlocked a level.

[sonic cipher]

https://gyazo.com/faea6f9acc1889e47021502f225230ab

this ? it check if it is true or not and if true it show the button

[solemn parcel]

@proud hull So after copying everything on the charBP, it seem to work

Ty !

[proud hull]

You are loading from a different place than where the load game function sets it. You will need to edit the load game function above to set game instance variables instead. #blueprint message

Save Game function: Get variables from Game Instance and set them in Save Game BP
Load Game function: Get variables from Save Game BP and set them in Game Instance

[sonic cipher]

Okay i will try to do this thanks you 🙂 not an easy task this BP xd

[proud hull]

Both sphere colliders will have their own events.

[proud hull]

Just make sure you aren't doing the collision test in Waypoint_BP, do it on your player character and use Other Actor pin to cast to Waypoint_BP, if it is successful, you know you hit a waypoint.

BP_SplinePath = WayPoint_BP

Make a new project with ALSv4 and check out what they did.

[sonic cipher]

https://www.youtube.com/watch?v=DOU5gvSlfPE i think this is what you want

[proud hull]

That is a bit different. More so looking to trigger a rotation animation when camera angle relative to player forward vector hits a certain threshold (45, 90, etc.)

Advanced Locomotion System did this already so should be a good example and you can probably copy/paste most of the stuff right into your project, or import the whole ALS project in and work out of one project to copy it over.

[west beacon]

@proud hull Sorry for ping, I do all of the things. Now I can place block, but I have a one problem. Trace doesnt work for block sides. I can only place block when look other block's mid point. How can I solve this?

[sonic cipher]

Yeah you are right ^^ anyway i hope it isn't a copyrighted character lol

[sonic cipher]

do you have a box collision indide ?

[west beacon]

If I don't look the mid of block, it will be place on top

[proud hull]

check "Trace Complex"

[west beacon]

Same

[hard sequoia]

Hello, is there a way to add any type of gizmo (Like a player start icon gizmo) to a scene component in the blueprint editor window. I have a few scene components which moves every time any property is changed. It would be nice if I could visualize where those components end up, hence the gizmos.

[west beacon]

I only have this

And they have like this:

[sonic cipher]

are they making the size of your block ?

[west beacon]

they are instanced static mesh

[proud hull]

Hmmm, size is a good point though.

[west beacon]

I call them from code and spawn them

[sonic cipher]

maybe when you spawn a cube then the size is not set good

[proud hull]

Does your tile size match the size of your blocks?

[west beacon]

Hey all are 1, 1, 1

[proud hull]

Oh, nvm, you have multiple placed, so it should

[west beacon]

yeah I have a terrain tile size is 100

As you can see, trace is like corrupted.

[proud hull]

Which trace are you running now? You can set back to by channel if you are running by object.

[west beacon]

I tried for objects too

[proud hull]

Ignore self is usually checked in most cases.

[west beacon]

If I check, I can't place

[proud hull]

You running this from a level blueprint or something?

[west beacon]

No, this is normal actor class

Like I said before, I followed tutorial

[proud hull]

And the actor is the same as the cubes the trace is now passing through?

So I'm placing a cube and that cube has the logic for the line trace? Seems so odd....

Ignore self means to ignore the actor executing the line trace. That line trace should be done in your player character.

[west beacon]

This is my actor

And its have construction script

It holds whole terrain

[proud hull]

Move the line trace stuff to your character, you are doing it backwards.

The terrain shouldn't handle what the player does, hehe

[west beacon]

I want to try it. But my blocks are in this actor. So how can I cast to MC->dirt_block

[proud hull]

Hit Actor

You get the reference there in the line trace

If you hit your terrain with line trace, you will be able to cast that to MC

[west beacon]

I cant find add instance

[proud hull]

Keep the add instance part in your terrain blueprint, make it a separate event/function.

[west beacon]

or like that?

[proud hull]

Yes, that

[west beacon]

same issue 😦

[proud hull]

Trace is done in character now?

[west beacon]

Yeah

Same traces

[proud hull]

There is something wrong with your collision settings then.

[west beacon]

Where can I look or change?

[proud hull]

#legacy-physics would know more.

[west beacon]

Okey thank you for your attention and help 🙂

[sonic cipher]

i have a compiler error after trying to cook the game, just because i edited a structure, even after removing what i added, still error ...

[unique harness]

what is the error

[sonic cipher]

https://gyazo.com/ed6302b89f045436a4d8de3a129841f4

error structure everywhere, i checked on the non-edited project and it has the same things but without errors

[unique harness]

what version are you using?

[sonic cipher]

4.26

i had no errors before, now that i edited i can't remove this

https://gyazo.com/b864266687b7269c970a4f2d7176c335 don't know whats wrong i did not touched this

[unique harness]

This used to be a big problem in like 4.15-4.19 but they've said it has been fixed

I ran into this issue before and ended up having to remake all my structs

[sonic cipher]

aaaaaa uff x) big problem really :v

[unique harness]

unfortunately the BP structs kind of suck

[sonic cipher]

hum yeah i should report that to epic

[unique harness]

we ended up converting all the structs to c++

[sonic cipher]

noo i can't code in c++ lol

what if i reimport ?

[unique harness]

try this https://answers.unrealengine.com/questions/337507/unknown-structure-error-when-cook.html

[sonic cipher]

thanks you i hope i can fix

[orchid garden]

hrm... i have a door issue..... wondering if someone can give some advice...

if the player stops in the doors path the door stops moving, i need it to either push the player out of the way or squishy them 😄

[unique harness]

why not keep the door open while the player is there?

[orchid garden]

its a timed door

[weary jackal]

Capsule is blocking

Add force

[orchid garden]

add force when?

[weary jackal]

On hit

Or you can teleport player with timeline from current position to forward

[sonic cipher]

Thanks you, renaming all my structures worked, strange bug trough. also thanks @proud hull for help

[orchid garden]

these @weary jackal ?

[sonic cipher]

that would mean everytime you hit the door then it add impulse no ?

even if it is closed

you should maybe add a variable "is closing" when the door close then if it is closing on component hit give impulse ?

[unique harness]

I think there's an easier way

[orchid garden]

nah i can check to see the doors state (closing, opening, dorment)

[unique harness]

there should be a physics setting on the door

because even if the door is closing and the player just runs into the door, it will still fire

[orchid garden]

wouldn't the physics cause a issue with the other door?

[solemn parcel]

How can I get all the actors from the SphereOverlapActors ?

[unique harness]

iterate over the out array

[weary jackal]

For crushing you can add bool isClosing. And on hit simulate physics. Also let capsule ignore door collisions and mesh should block it
For 2nd one. Teleport

[unique harness]

drag off the array and type foreach

[solemn parcel]

oh for each loop

nvm ALWAYS forgetting about this

thanks

[orchid garden]

oops... physics >.<

[weary jackal]

@solemn parcel are you making interaction?

[solemn parcel]

?

[weary jackal]

Interact with an object

[solemn parcel]

yeah

But the ForEachLoop was pretty much it

[weary jackal]

Nah for now you are checking with class. What you can do is add interface to all actors that are interactive

[unique harness]

you can avoid the class check you're doing by using the ActorClassFilter on the SphereOverlapActors

[orchid garden]

guess i could just add a blocking volume thats active when the door is opening & closing...

[weary jackal]

There's a node 'Get overlapping actors' with target as self and you'll get an array

[solemn parcel]

But if I have multiple different classes to check

[unique harness]

To use that you will need some sort of sphere/box/etc collision though

[weary jackal]

No

[primal smelt]

Ok been a while since I messed with blueprint interfaces and I've already forgot a ton of stuff. Left (new project) / Right (old project). As far as I can tell I have created a bpi and function on left in the exact same way as I have on right however the target pin is incompatible with the 'other' pin in the new project. Can anybody think why this would be different? Also, whats with the envelope icon in the node of the right string? Can't remember what that signifies.

[weary jackal]

Just implement interface in what items you want to check.

[unique harness]

you need to cast 'Other' to your BPI

[weary jackal]

@primal smelt it is interface message

[primal smelt]

Sorry there are still plent yof basics I'm unfamiliar with or rusty on. But how is it that I did not have to cast on the old project?

[weary jackal]

No you don't have to cast

[primal smelt]

Ok thanks, any idea why this isn't on the node for the new project (left)?

[weary jackal]

If you create an inter face function, let's say function1. Then there will be function1 (message) in your bpi.

The reason is maybe the interface is missing

[unique harness]

You can do it either way,

Interface Class is class specific, Message is not

[primal smelt]

Any idea how I should go about troubleshooting this? Here are both bpis and they should be set up in the same way, the old one just has an extra output

[unique harness]

What happens if you drag off Other and type 'Select WC'?

[primal smelt]

That did it cheers, just realised I didn't have context sensitive de-selected which is why I wasn't seeing it! Long day :p

[west beacon]

Hi, I'm trying to place blocks (voxel's) and they are instanced static meshes. But I only place it when I look middle of the block. If I look 1 pixel up it will be place the block on the top of my head. But I want to if I look this side it will be place next to this side. How can I do that?

[primal smelt]

Does anybody know if an event hit will pick up a line trace? So Dude01 fires line trace that hits Dude02. Does all the code need to be in Dude01's blueprint or could an event hit in Dude02's blueprint also detect the line trace?

[unique harness]

no a trace does not trigger event hit

[primal smelt]

Ok cool thanks, good to know

[crimson swan]

Can someone help me debug why my while loop is crashing my game constantly...

[unique harness]

sure post some screen shots

[unique harness]

and what crash are you getting?

iteration count i'm guessing

[crimson swan]

infinite loop

which is why i'm confused af

[unique harness]

it doesn't look like you're actually rotating in the loop body

[crimson swan]

im setting the rotation speed for the rotation component

i know the character rotating part works but eitherway it for some reason doesn't change the bool

[unique harness]

ah I see it now

[crimson swan]

or it does but still considers it an infinite loop?

[unique harness]

honestly this seems like the wrong way to go about this

[orchid garden]

found the problem with the door, i originally had Sweep set on setrelativelocation:

[unique harness]

you probably want to use something like this

and do it in event tick, not a while loop

[orchid garden]

it pushes the actor out of the way properly now :

🙂

[crimson swan]

yeah sleeper i know, but i'm trying to do it in a function

also for the record here's a cleaner screen cap

[unique harness]

well that's not really how while loops work

[crimson swan]

i mean i'm getting a bool, while that bool is true do the loop (set the rotation speed)

[unique harness]

they're a bit different in BP because of how they need to work to function

[crimson swan]

inside the loop check for the bool again

[unique harness]

but you should think of a while loop executing everything in 1 tick

[crimson swan]

oh.. so you're saying it's just dumping the values before it has time to finish?

[orchid garden]

is setting a actors scale a okay method to increasing their overall size? or does that cause issues? know some static meshes have issues with their collision when they are scaled.

[worthy frost]

you need to interp over tick

[crimson swan]

it's acting like an interrupt?

[worthy frost]

for smooth rotation

[crimson swan]

ukaos i'm just setting the rotation components rotation rate

[unique harness]

if it was functioning correctly, your character would turn instantly

[crimson swan]

i'm not actually moving my character X degrees

[worthy frost]

yeah but why use the while loop? i don't see what that is doing?

[crimson swan]

i want it to keep checking

i don't know any other way to check when to stop it

[worthy frost]

but you can check if your facing target, in tick, and then stop the interp

no need for this extra stuff

[crimson swan]

i need to look up how to use the interp stuff

never touched it yet

ok but the issue with checking it in tick is that this function is ran from a custom event

and i only want to run it once

[unique harness]

you can't have a function that

"runs once"

and rotate smoothly

[worthy frost]

but that while loop will lock your game thread

[crimson swan]

yeah i know hence my issue

[worthy frost]

whilst its running

or chuck you out with inf loop from the Kismet VM

[crimson swan]

yeah i was getting inf loops. Ok so i guess i need to rethink this entirely

[worthy frost]

i mean, its pretty easy to do tbh

you have a function, like you have now

[crimson swan]

to give you context im doing a top down game right, so when i right click it plays a montage and i want the character who is facing somewhere to rotate towards where i clicked while playing that montage

[worthy frost]

but it does a simple check to make sure you are not already facing that location, if you are not, it sets a bool (bEnableRotationTick) for example, and caches the location to face, your tick will check if that bool is true, then it will check if you have reached that location, and turn that bool off again

i assume rotating movement moves it

but that is all you need to do

[crimson swan]

ok but that would mean i need to put a bool checker in ontick that sets rotation to 0 if bool is false right?

[crimson swan]

so even if nothing is happening it's still checking that bool and setting a rotation constantly

[weary jackal]

There's a node 'find look at rotation'

[crimson swan]

i guess that's one way of doing it dirt. So in my function i would just define the variables and let tick handle it?

[unique harness]

yes

[worthy frost]

if you want to use rotating component

[crimson swan]

i mean i'm not fixed on anything i just assumed a rotating component would be easier i didn't know there's a node that rotates over a fixed time from an angle to another angle

[worthy frost]

interp is better

less components

[crimson swan]

i guess it solves the issue of which angle is quickest to get from point a to point b

which i was gonna do later anyways

[weary jackal]

Man, for pawn inside character movement, you will find rotation rate. Also stop using yaw. It will make rotation smooth. Then the interept will be much better

[crimson swan]

will do, thanks guys

i'll be back if i run into other issues

[worthy frost]

@crimson swan you could do something like this

also

not tested and is simple AF

[little cosmos]

Hi! this is how my lvl is supposed to look like

sometimes things disappear when PIE

[unique harness]

Is your city one giant mesh?

[little cosmos]

sometimes bugs like this

[little cosmos]

No

[unique harness]

is the ground (sidewalk, roads, etc) one large mesh?

[little cosmos]

Some are yes

but this never happened before

[unique harness]

my immediate guess would be some occlusion/visibility culling issue

do they reappear when you move around/change camera direction?

or if they're gone, they're gone?

[little cosmos]

Some of the objects that disappear are small meshes too. not only those large ones tho

no, if they're gone they're gona,

as if I deleted them completely

Sometimes this happens and sometimes everything's fine. no pattern that I could detect

[unique harness]

Have you tried restarting the editor?

[little cosmos]

yeah sure

this has been around for days now

[unique harness]

ah when you said it's never happened before I thought you meant just now

[little cosmos]

oh no, I meant in my UE4 experience of a few years

[unique harness]

Does it happen when playing in editor viewport or only separate window?

[little cosmos]

mostly in editor viewport

but when PIE

only when play

[unique harness]

so if you play in editor viewport and pause are you able to select the disappeared object?

[little cosmos]

No

It's like it's hidden but it isn't

Nothing in output log either

[unique harness]

can you find it in the world outliner?

[little cosmos]

I need to have a look. Trying to reproduce this now.

yes I can

and if I hide and unhide it, it's back

[empty canyon]

Maybe you're using level streaming and forgot to load the level

[little cosmos]

All sub-levels are always streamed

In fact, this issue only happens sometimes with no distinct pattern to iut

also check out all the images, sometimes everything goes crazy

Sometimes things just vanish, sometimes they go like this

[trim matrix]

some of the city-wide meshes try turning off "use for occlusion"

[little cosmos]

didn't help

This is the weirdest bug man

[empty canyon]

Then try rebuilding the level

By clicking build on the toolbar

[little cosmos]

I will

lighting is all dynamic btw

[empty canyon]

Or try to play the game in spectator mode and check if the road collision is enabled or no

That may help

[trim matrix]

If you run PIE then press alt+s to eject from the pawn, does that change anything?

[little cosmos]

Nope, tried that before..

it is as if some of my sub levels don't show up

[trim matrix]

a temporary solution might be to cover the city block with a volume and parent all your disappearing meshes to the volume, then turn on "use parent bounds".

It's not exactly efficient tho

[little cosmos]

Ok i'll try that. More interested in the root cause though

it's been killing me

[trim matrix]

had a college assignment that had us import all of Vegas into ue4 from a provided sketchUp mesh. It had a lot of the same issues. What fixed it was separating all the buildings to individual meshes, breaking up the sidewalks, replacing roads and grass with landscape.

I think what the main issue was, the origin point of the meshes were falling behind other large geometry

[little cosmos]

It's indeed a giant datasmith exterior, most of it. but this problem didn't happen until recently

[weary jackal]

Try #level-design

[little cosmos]

Also how do you explain the random occasions when this happens?

[trim matrix]

I can't, I can only assume that the z order is having a hell of a time

[little cosmos]

Ok I see. thanks

[trim matrix]

another thing to try. Create a new, empty sublevel; make the sublevel the active sublevel, then make the sublevel hidden. Select any large meshes in the scene and migrate (ctrl+m) them into the hidden sublevel. Run PIE after every move to see if it changes anything.

Can I make a custom event like ''event begin play'' or ''event tick'' from a behaviour tree task?

[astral fiber]

There is a blueprint Node called "Find look at Rotation" which finds the rotation to let an object look at a specific position. This is for the X axis, is there also a node for the Z and Y axis?

[solemn parcel]

Can someone tell me why the sweep pins from Overlapping events returns false randomly ? Having the sweep/hit locations from BreakHitResults works randomly, and the 'FromSweep' Pin returns true/false randomly

And I kinda need that Impact Point Location

[true kiln]

Hello guys,
I need to get the closest point on the collision but the problem is, the existing function only works when that point is outside of the collision, is it possible to get closest point from inside the collision?

[short bramble]

Hello! I'm having an issue using the GASshooter template of Reuben.
Reuben splits the logic fire between client and server, and waits for validation.
I'm trying to branch in the final step when the GE/FX is applied to the target, based on the current health of my target. However, health in the client is always one step backwards so is not reliable (for example I need one extra shot to trigger the wanted FX if the target reaches XXX)
Anyone knows any node or way of saying inside a GA how to declare the server has authority over an attribute? I can't find a correct function to override client data. I want to declare server has authority, and update client data from server BEFORE applying the GE.
UPDATE: Reuben made a "wait one frame" function that gives initial good results. However, this is me playing around and I think is not reliable at all. Another GAS function tested is the waitSync (client or server) but looks like not working / bypassing.

[trim matrix]

@solemn parcel I believe the bSweep only returns true when the volume is being updated by blueprints. If it's not moving, and another actor overlaps the volume, then it would return false.
Instead, try using a branch that returns true if the impact point is not equal to 0

[trim matrix]

Here's a rough breakdown of what LookAt is doing. Maybe you can extrapolate from here?

with the makeRotFromZX node and other similar makeRot nodes, keep in mind that the first direction is a priority direction and the second helps establish a twist along the priority.

So in this case, the actor will always orient its Z axis up in world space, but will twist to point the X axis towards the target actor

@solemn parcel I made a mistake. The overlap node doesn't typically return a impact point at all.

[sonic cipher]

Hey, i was asking myself about save games
If i save for exemple players controls in "save" slot, then i load it on start game
Then i save the position of the player in the same "save" slot, will it erase the controls that are saved and remplace them by the position of the player or does it merge in it ?

[trim matrix]

the User Index for saveGameToSlot only matters if the Slot names are the same

So the player's controls can be saved to a slot named controls and you could use index 0 and never worry about it overlapping with other savegames

different saveGame classes will still occupy the same namespace when saving. So if your controls were saved under "save"/Index 0, and your character positions were saved under "save"/Index 0, then they would overwrite eachother

[west beacon]

Hi, why my material is like that?

[trim matrix]

Sorry Poyraz, I can't really tell what's wrong?

[west beacon]

It should be like this.

[dull tree]

Is this good replication?

[trim matrix]

Try scaling the texture

[west beacon]

I'm trying now.

[west beacon]

How can I get this node?

[trim matrix]

the node is a "constant". Hotkey is hold 1 and left click

[west beacon]

Okay thanks

[trim matrix]

@dull tree This is best asked in #multiplayer . I've tooled with a lot of multiplayer stuff but I definitely don't know what standard looks like.

[west beacon]

Know its better than old version. But not exact the same texture.

(Selected block is normal correct textured block)

[trim matrix]

Best guess to what happened is the wrong block has some goofy UVs

[west beacon]

I did same

[solemn parcel]

@trim matrix What does it return then ?

[trim matrix]

How would I set it up so I can find the location of either the closest 3 objects or a random object from a chosen list?

[trim matrix]

if you want to try finagling with the material UVs some more...

[west beacon]

I made multiply value 4. But their texture are colliding

[trim matrix]

example I got 3 food sources in my scene, I want to find the location of the closest food source

[trim matrix]

It seems to be the last saved object

I tested with two saveGame objects (using different created classes) that store a print value. The last one saved in a sequence is what is loaded.

[west beacon]

I tried this and it get worse

[west beacon]

worse than this

[trim matrix]

what software is your cube imported from

[west beacon]

I get the texture, and added to static mesh

Texture is 16x16

[trim matrix]

yes but the cube geometry. Is that just in engine or did you create it in blender or 3dsmax etc?

[west beacon]

No, only engine.

[trim matrix]

the issue with the texture is the cube's UV map

ok one sec

[west beacon]

Should I send texture?

[trim matrix]

are you using this cube?

this one should work for your use-case

the starterContent Shapes should also work

[west beacon]

Okey wait a sec

[trim matrix]

if you created your project with default settings in the launcher, you will have starter content (I believe)

[west beacon]

I can't use Shape_Cube, I must use different

Can I use one of them?

Okey I solved I think

[sonic cipher]

okay thanks for help 🙂

[west beacon]

I selected this

[west beacon]

If I choose this, will I have a problem in the future?

Because for now, everything is perfect.

[trim matrix]

if you created a default cube from blender, The UVs will appear stretched because of this layout

[solemn parcel]

can I get the Impact Point of an Overlapping actor by somewhere else than by breaking the sweep result ?

[west beacon]

?

[trim matrix]

I don't think overlap produces any impact point results. If you're getting an impact point at all, it's because an object is actually colliding with the actor.

[trim matrix]

hey if that content cube works for you, don't sweat the blender cube

[solemn parcel]

So how to find that Collision Point ?

[west beacon]

Hey that cube worked. Should I stick with this, or dont?

[west beacon]

I don't know it has collision 🙂

[trim matrix]

use OnComponentHit

[trim matrix]

stick with it if it works

[west beacon]

Okey, thank you so much for your attention and help ❤️

[solemn parcel]

@trim matrix I can't tho, I need to use only overlapping for that detection, hit is being used for World Static

[trim matrix]

if you show me your use-case then I can help better

[solemn parcel]

I want to spawn an emitter on the overlapping point*

nvm better picture

[trim matrix]

Since your object is a sphere, you can use a sphereTraceForObjects or sphereTraceByChannel to get a impact point

is* your sphere sliding along a path or are you teleporting it somewhere

nvm I see your projectile movement component so i'll assume this sphere is a projectile

[unborn maple]

any idea why set actor location will not work anymore. any time i hit restart game and it go back to play stay the ball sit at same location and just rolls from them

[solemn parcel]

Its a projectile yeah

[unborn maple]

bind even being called here

[trim matrix]

@solemn parcel

[solemn parcel]

well im working on the trace right now, I just wanted to avoid this to keep it as light as possible

[trim matrix]

something like this should do it

[solemn parcel]

So overlapping being useless ?

[trim matrix]

Overlapping will not get you impact point. But sphere trace definitely will.

if you didn't need impact point, only the object location, overlapping would be just fine.

but if impact point is a must-have. This is the way to go

[solemn parcel]

Thank you !

🙂

[trim matrix]

if the ball is on the ground, sweep will actually not move

the tickbox on setActorLocation node

[crimson swan]

interesting question for all of you here. Does toggling collisions trigger an overlap event every time?

[unborn maple]

it doesnt move when i uncheck sweep

it break the ball movement

[trim matrix]

this comes to mind. The actor might try creating emitters every tick unless you branch InitialOverlap.

[trim matrix]

ah. I really don't understand what would cause that. Sorry it didn't help.

[unborn maple]

i fix it when i move the z locatin it move

[crimson swan]

yeah that's what i was about to suggest

your issue is it can't actually fit where you want it to go

when you spawn an actor you have a setting that checks if it can fit and gives you options based on that. Same thing here except you don't have that option so i'm guessing it's just returning an error or something

[unborn maple]

gotcha. i move it up 70 to fit the other actor and it started setting it location after i hit restart

[trim matrix]

This seems to produce an overlap every timer loop

[crimson swan]

this is the code i'm running, kinda zoomed out but you get the gist of it. So the enemy has this setup

it only executes on the first collision, my guess is because the player is already in the overlap when it's being toggled so it doesn't technically overlap again?

[trim matrix]

is it overlapping itself or is the player a separate actor?

[crimson swan]

player is separate

[trim matrix]

I've set up the reverse, where the player is attacking an enemy and had the same issue happen

I made the player helicopter attack with the same collider and it would only hit once. But if I alt+S during the attack so that I'm in spectator mode, then the attack seems to hit as expected

I never figured it out

[crimson swan]

alright, time to find a ghetto solution then

[trim matrix]

it did not seem to be linked to framerate either

yeah sorry lol

I still have that project somewhere, I'll try to find it and post a gif.

location will be 0,0,0

trying to find closest food location

trace results work I suppose?

[crimson swan]

yeah i know what your bug is, i spent a day tracking it down for myself

gimme a sec

do this

controller -> blackboard

if you do the key method it just picks the first item in the blackboard enum

[trim matrix]

@crimson swan is that aiming towards me?

[crimson swan]

yes

[trim matrix]

Ah okay, I dont understand tho haha

[crimson swan]

i'll draw it out gimme a sec

[trim matrix]

idk if its the same bug, but it defaults to the plane every time

[crimson swan]

yeah it's 100% the same issue i was having

[trim matrix]

thats reassuring

[crimson swan]

@trim matrix

[trim matrix]

hm nope

cant read

something

[crimson swan]

show me your blackboard if you don't mind

and your modified blueprint

[trim matrix]

turns out I don't have that project somewhere. rip

[crimson swan]

@trim matrix oh no worries lol

[trim matrix]

i think its an array issue

like it cant find the vector or something

sorry its messy

https://forums.unrealengine.com/filedata/fetch?id=1050626&d=1400094754

[crimson swan]

and the printout of the value for closest food is 0,0,0 right?

[trim matrix]

im following this, I guess its easier to understand that way

yea its always 0.0.0

[crimson swan]

where are you setting closest food

[trim matrix]

Probably the cube its walking on

[crimson swan]

my guess is it's taking the default value for that variable

set the default to like 100,100,100 and you'll be printing 100 100 100

or rather no sorry that makes no sense XD

it's an actor right? so try printing the actor(closestfood)

it's gonna tell you what type it is

[trim matrix]

didnt print anything lol

blank space?

[crimson swan]

so it's null

your actor isn't valid

where are you setting it

[worthy frost]

@trim matrix is that tick inside a BT Task?

if so why?

tasks are to do one job, if you don't find food, end the task and try something else

[trim matrix]

yea the task is to find the closest food

next task to is to move to the location

[worthy frost]

yeah but you don't need to use tick, using Execute AI is fine

[trim matrix]

not using tick

[trim matrix]

its an example

its not mine

[worthy frost]

oh

[trim matrix]

its what I used to find closest

[worthy frost]

that was not made clear

[trim matrix]

my bad

[worthy frost]

#gameplay-ai i will help you

more relevant there

[unique harness]

Keep doing you but I noticed three things you should probably address eventually.

1. SphereTrace is pretty expensive. You can probably get a way with doing a SphereOverlapActors.
2. I'm not sure why you're doing this on tick(maybe for testing which is fine) but you can probably use a SphereCollider and utilize the BeginOverlap/EndOverlap functionality instead of the SphereOverlapActors
3. You can consolidate the "store noticed victims" and "find closest" to 1 ForEach instead of 2 improving this function's speed.

[trim matrix]

@unique harness Thats the example im working off 😄

[crimson swan]

@trim matrix i'm not 100% sure on this but i think your closest food is always gonna be null because closest distance is always gonna be its initial value which is always gonna be less than any other element

[unique harness]

perfect, now you know what not to copy 😛

[worthy frost]

its ok i am helping him in the correct channel

[trim matrix]

@unique harness haha I was just looking for ideas on how to do it

[crimson swan]

@unique harness @worthy frost do you guys have any ideas how to cause an "onbeginoverlap" event to trigger when you toggle collision on and off?

[unique harness]

like generate an event for all actors already overlapping?

[crimson swan]

this is only triggering once (if the player is already in the zone that is)

it's on a timer, so it should be triggering every say 1.5 seconds, but it's not. it's just doing it once and that's it

[unique harness]

I don't understand your exact question, could you try again?

[crimson swan]

ok, i have an npc that chases the player and deals damage. This is ran from a behavior tree. It executes this code that i've shown

now the issue is the npc catches up to the player and triggers the collisionoverlap event but the player hasn't moved out of it. Therefore it will never trigger again

[unique harness]

yes begin overlap is only called when exactly that happens

[crimson swan]

i'm using the collisionenabled to toggle when the npc can or can not deal damage. So my question is how would i make it so that the npc enabling it after the first time would still cause damage without the player needed to leave and re-enter the collision area

[unique harness]

so you can grab that collision object and call GetOverlappingActors and handle the "beginOverlap" functionality

[crimson swan]

aah yeah that makes sense

[crimson swan]

and i guess i would check it on tick or something

[unique harness]

no

just when you enable the collision

[crimson swan]

gotcha. thanks

[unique harness]

so you can convert your BeginOverlap functionality to a function that accepts an actor

then call that on BeginOverlap and when you enable collision using the above node and looping through

[sharp lintel]

This might be a bit of a silly question but how do I see if a condition is being met on a boolean between 2 blueprints?

[crimson swan]

i mainly do it through casting

[unique harness]

something like this

[unique harness]

Could you describe what you're trying to do a bit more?

[crimson swan]

@unique harness yeah that's what i had in mind, thanks a bunch

[sharp lintel]

Yeah, I am trying to use a boolean within the level blueprint to see if an item is collected so that other things can happen if it is true

[unique harness]

You probably don't want to store that in the level blueprint

You can't really access the level blueprint from any other classes

You'll probably want to store that in GameInstance/GameMode/GameState

You can still do the logic in your Level Blueprint if it's level specific but just store that variable somewhere else instead of the level BP

[sharp lintel]

I am destroying the actor within its own blueprint. So how would I make it in the level blueprint to know that the condition is true?

[unique harness]

You should aim to create event based logic rather than sticking stuff in event tick

but if you really want to do it this way, create a boolean in your game mode class and use that

[sharp lintel]

I had just used that to get it working

[unique harness]

but it seems like you could avoid this logic by just telling your deleted actor (or an actor that manages this deleted actor) to spawn the new actor

[sharp lintel]

I will try that. thanks.

That worked much better thank you. I forget you can split pins at times.

[mighty fable]

If I were to want to spawn an item in front my character using a console command but always have it spawn like 3 feet ahead of me how would it look?

[unique harness]

https://answers.unrealengine.com/questions/212249/how-to-create-custom-console-command-in-blueprint.html

[mighty fable]

thanks

[trim matrix]

@mighty fable might have to add actor location vector to the forward vector

[unique harness]

oh yea, that too lol

[mighty fable]

that's just player controller though right?

[trim matrix]

:)

i closed my editor so thanks lol

[mighty fable]

ok, lemme see!

It still didnt spawn the enemy, is 15 too small of a variable?

[unique harness]

yes the distance is in centimeters

[mighty fable]

so like 100

[unique harness]

so like 1000 will be ~3ft

er 100 yea

Did you set the actor class to spawn?

Also, are you sure the function is being called

[mighty fable]

with the variable set to 100

yeah im typing it in

lemme put a print string at the end just to check

ok, so the string prints

[unique harness]

and what class is this code in?

[mighty fable]

sorry, what class?

[unique harness]

the code you sent the image of

what class is it in

[mighty fable]

the level bp

[unique harness]

add this

[mighty fable]

Awesome it works!! Thanks guys! ❤️

[unique harness]

You can load the same level again

[latent finch]

I'm not sure if this falls under blueprints or not. But I made a hud widget for my HP bar. Is there a way I can make a blueprint so when I pick up a specific item I gain a heart?
Not healing a heart, but making a health bar got from 4 hearts to 5

[unique harness]

Store CurrentHealth and MaxHealth as integers in your player class, increment MaxHealth

[latent finch]

That's how I have it now. But I have it as a stand alone progress bar. If I make a pickup that add a heart and changes max health will that add a new heart image too? or is that something else I have to do

[unique harness]

You would have to add that logic

[latent finch]

Is that something I'd add to my widget or my characters event graph?

[unique harness]

widget

[latent finch]

ok

[unique harness]

so I would create a widget called BP_Heart

and have it be your heart image

then dynamically change the number of "BP_Heart" in your health bar

[latent finch]

Ok, I'll fiddle around with that and see if I can get it.
Thank you for the help

[unique harness]

something like this

HeartContainer is a HorizontalBox

but you're creating the BP_Heart dynamically, not like in the image

[latent finch]

And this is contained in my widget health bar binding?

[dense tulip]

Is it possible to change the origin of a mesh with UE4 ?

[willow phoenix]

bpi... i have 2 actors (dice and playstone, both have a BPI)
what the heck do i put into "target" to make this thing work? and why?

so i still need a reference to these playstones and call it 14 times. jesus, what is that BPI even good for?

[dawn gazelle]

They're good for interacting generically with objects of different classes without having to cast to the specific class of the object, and if the object doesn't implement the specific BPI, then nothing happens.

If you're looking for something where you want a lot of objects to respond to something, then you probably want an event dispatcher and have all of those objects bind to it.

[stray island]

Whats the difference between make rotator and split the transform rotation values

[faint pasture]

They are opposites

Or do you mean breaking out the rotation from the transform?

A transform is a location, a rotation, and a scale all combined.

[smoky rivet]

is it possible to aim down sights by modifying bones and making a socket on the ironsights go to the center of your screen?

[stray island]

I meant whats the difference between adding make rotator on the left , and just splitting the rotating transform like on right

[dawn gazelle]

They're the same thing.

[stray island]

Then why people always make rotators

Ok thanks

[dawn gazelle]

I'd fathom that not everyone knows about splitting structures.

[stray island]

Everytime i enter a tutorial the instructor would make rotator instead, so i thought i am doing something wrong , good to know they equal

[dawn gazelle]

Like these are basically the same... XD

[stray island]

Oh , for organizations makes sense

Does making structures instead of having the variables themself in bp , differ performance wise?

[unique harness]

if it does, it's not enough to matter

[stray island]

My bp Calling many structures say 20

[unique harness]

Structures are very light weight

[stray island]

Great

So i am able to set a range in editor for a float value

Is it possible for float value in a structure

[unique harness]

no

and I believe that range really only applies when changing the value in an editor interface, I think you can still force the value outside the given range by setting it manually

[stray island]

So i better bp it boloean if > value , set value to the same limit

[unique harness]

though it may complain when cooking

[dawn gazelle]

Just use a clamp

[unique harness]

^

[stray island]

Tbh idk what is clamp

[stray island]

But I will look it up

Oh

[dawn gazelle]

Restricts values to a minimum and maximum, so anything below or above the min and max will be set to the min or max.

[stray island]

Ok i will see its effect on structure

Oh it worked but in the editor but not visually with numbers , so i will bolean the number

[unique harness]

what do you mean "boolean the number"?

[stray island]

If its set above the limit the set it as the limit

So u cant increase

I didnt test that

[unique harness]

that's what clamp does

[stray island]

But clamp affected it in scene not in defaults

I mean not in exposed value

[unique harness]

I guess I don't understand how doing it with a bool would change what you're experiencing

[stray island]

Just to force not doing big numbers

And retain the limit

[unique harness]

yes I understand what you're trying to do.

I don't understand why bool will work but clamp will not

[stray island]

To avoid

Both was neeeded

[unique harness]

You can just skip the branch and set the value to the clamped value though

[stray island]

How

Is there another clamp node

When i remove the bolean id be able to increase the number infinitely

[stray island]

Oh thats smarter , Thanks

What is switch on int , because i have options in enum and i also just bolean , false then enter the other option , or it shd be done in switch on int?

[unique harness]

screenshot?

[stray island]

Ok

[fathom portal]

You can also just set a range on the variable itself:

[worthy frost]

that does not clamp in BP tho

only on defaults

[unique harness]

he was specifically asking about values in structures

[fathom portal]

Oh, really? Well dang, I've been using that for ages

Dang, yeah, I just tried it out, it doesn't clamp it's value. Well that's a shame

[stray island]

Is this good way to fire event based on enum choices

[fathom portal]

Use a "Switch on choice" node instead

[unique harness]

That's where you'd use a switch statement

[stray island]

Oh

Alright thanks alot

I know how to specify rotation movement on a component , but is there a way to remove the movement from another component , so it ignores a specfic component

[stray island]

Worked as i wanted Thanks

[noble basin]

how would i delete a specific instance of a blueprint, instead of deleting all blueprints of that class in the scene

i cant figure it out

[unique harness]

Could you try to explain the scenario which you need to do this?

[noble basin]

ok so i have a paint select, a few different colors they can come in, by switching the decal color of the object, when they hit the ground, they leave a mark, for my green paint, when i place a new one on the ground i want the old one to disappear, as to avoid confusion since they work as portals

[unique harness]

so when you spawn one, store it in a variable

before spawning the new one, check the variable to see if the object exists

if it does, destroy it

[noble basin]

i tried storing it in a variable, and then destroying that object, it didnt work, idk if i did something wrong

it just didnt delete anything

[unique harness]

Can you show how your spawning the new object?

[mighty fable]

Hey guys, how would I teleport from checkpoint to checkpoint via console command? I have nodes with the tag "Checkpoint" and want to put them in a list so if you input the command again it will move you to the next one, but I'm unsure how to do that.

[unique harness]

I feel like creating a widget to list the checkpoints as buttons would be more simple

[mighty fable]

I would rather have it through console commands. Do I use an array?

And a sequence?

[unique harness]

yes you can do GetAllActorsWithTag

and store your checkpoints in an array

then send an index with your console command

Is there a reason you'd rather have it in console commands?

[mighty fable]

just so its more of a debugging feature rather than allowing the player to skip around freely

[unique harness]

Do you plan on enabling the console for shipping builds?

[mighty fable]

yea

[tight schooner]

If you want it to skip to the next checkpoint with the same command you need some way to determine what the "next" checkpoint is. Idk anything about your game so maybe you can figure out some way to do that with some metrics. Otherwise you need a list (array) of checkpoints in order, and a variable that tracks the player's last checkpoint so that the function can select the next one.

[mighty fable]

so get all actors with tag then promote the array variable off of that node?

[unique harness]

yes

[mighty fable]

I'm not 100% sure on what it should look like

[unique harness]

Do you have a class for your checkpoints or how does it work?

[crimson swan]

Random quick question: Can you not play montage from inside a character blueprint?

does it have to be done on the player controller

[unique harness]

You should be able to do that

[crimson swan]

i can't seem to get the "play montage" node in the character. It just doesn't show up at all

i get montage play but that doesn't have access to the notifys

[unique harness]

It needs to be in the event graph

[crimson swan]

aah that explains it

thanks

[mighty fable]

yeah there is a class, as a blueprint

[unique harness]

So you can do GetAllActorsOfClass then

and I would use some member variable in that class to denote order

so you can sort the array

[mighty fable]

so getallactorsofclass, then promote variable

[unique harness]

yes

[mighty fable]

compile and add the list of checkpoints into the values list?

[unique harness]

should basically look like that

or if you're going to sort

[mighty fable]

yeah that's what I got so far

[mighty fable]

so that second one is if we are going to teleport in order?

[unique harness]

yes

I added an Index variable to the checkpoint class

so you can't sort them correctly

[mighty fable]

ok, so that's what we want! Now does that include the warp and everything?

[unique harness]

no this is just storing them

[fathom portal]

So what is the difference between the top and bottom examples? I get they're both making lists/arrays, but wouldn't instantiating a variable for them make the variable list that size anyway?

[mighty fable]

idk im trying to understand this too

[unique harness]

the top one doesn't ensure the checkpoints are in order

[fathom portal]

Oh, it's casting them too

[unique harness]

so your custom event would be something like this

note, I'm not testing any of this so it may need some tweaks

but the general gist of the logic is there

[mighty fable]

so you have 2 variables "Checkpoints" and "Index"?

[unique harness]

Index is a member variable inside the checkpoint class

Checkpoints is a variable inside the level blueprint

[mighty fable]

Is this one going to teleport us in order or just look for the checkpoint actor tag and pick one at random? Sorry, I'm trying to keep up.

[unique harness]

the index on the method will decide which to teleport to

[mighty fable]

so do I need your other 2 sequences of nodes then?

[unique harness]

the second method is the console command

the first can be executed on begin play or something

[mighty fable]

ok, so the console command one is the one with the get array?

[unique harness]

yes

[mighty fable]

ok, thank you so much! Sorry, I'm still learning

[crimson swan]

hey guys me again

how do you trigger the on notify begin/end with this

they never seem to want to trigger for me

[covert delta]

in the anim montage, you have to specify that it's a montage notify. You can't just make a new one.

[crimson swan]

ok but that works only for the begin, what about the end?

[gritty plover]

When setting the value of a vector, is there a way to define a max and min values for the vector?

[gritty plover]

Thank you!

[worldly dew]

Hello, I am having a bit of an issue. My character plays two montages at once, each with a different slot. However, when one animation plays, the other one stops. Any idea why?

[trim matrix]

Hi, I'm using UE4 version 4.26.0 and camera shake seems a bit more rough. Anyone know why?

IT also won't let me set it as an single instance

I'm using Matinee camera shake for headbob

[viscid shard]

how can i find out if a player collides with a collision volume thats inside another on? it aways returns the BP thats colliding

like i have a waypoint with a sphere thats large for discovering it. then one on the platform for using it

[crimson swan]

is there any way i can select more than 2 possible death animations?

using a select node doesn't seem to work

in anim BP that is

[dawn gazelle]

Can you show a screenshot example of what you're looking to do or what you have?

[crimson swan]

sure

gimme a sec

this is what i have

the issue is i can't plug that select node into anything

the random sequence player goes through all of them instead of stopping after picking one

if i do it in the characterBP it just loops the montage of the death animation forever. I litteraly have no idea where to go from here

actually i think i just got it, it's in animation montages

[true valve]

Can you apply material instance to tiled landscape via blueprint in-game?

[unique harness]

looks like you want random sequence player

http://scylardor.fr/2020/08/13/unreal-engine-tips-playing-random-animations/

[crimson swan]

Sadly that one didn't work, it turned out i needed to create a montage section in my montage that would loop the final frame infinitely

and then add a montage notify window to allow for notifiy begin and notify end

[trim matrix]

crude way of me setting up a way to enable and disable the mouse cursor, problem is, when i click on something with the mouse enabled, whatever that is plugged into the action command for the left mouse button, fires in the background (the inputaction mouse is bound to tab to enable/disable the cursor). set input ui only doesn't seem to work for me as i can't call the widget for some reason

[vast lion]

Is there any sort of "one off" lerp node?

trying to animate a scale just once