Issue with Roblox Physics

Help and Feedback Scripting Support
#1

Hey there!

I have been having this problem for forever and I have been putting off fixing it, but since players in my game have been talking about it I am going to try to fix it.

So…
Does anyone know…
Why this happens…

My best guess this is Roblox’s way to keep people from getting stuck, but I don’t know, any ideas?

#2

If you throw a bouncy ball off a cliff and it hits the ground below at 50 mph, that ball will bounce off the ground and up to a certain height. My guess would be that it’s something similar here, but instead of a bouncy ball its a robloxian going at the speed of light and instead of the ground it’s a wall. It’s perfectly normal, at least from what I’ve seen.

#3

Try setting the players HumanoidRootParts’ elasticity to 0. elasticity is the tendency of the part to retain its energy when colliding. You can read about this here: PhysicalProperties | Roblox Creator Documentation

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#4

Ok thanks it may have fixed it, it is still doing it, but it might be happening less, it is hard to tell.

#5

I dunno if it works in your case, but i had the same issue when spawning and teleporting. I managed to fix my issue by simply making the head of the character anchored, I dunno if this works out for you but if you are able to give it a try, feel free to do so

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#6

but wouldn’t the character not be able to move if the head is anchored?

#7

You’ll have to set the elasticity of the other parts that have canCollide on to 0 like the lower and upper torso. Depending on if its R6 or R15. and youll have to do this whenever the characters are added.

#8

Ahh ok I bet that was the issue…

#9

A much better solution would be to simply disable this “flinging” state entirely.

You can do so with Humanoid | Roblox Creator Documentation :

Humanoid:SetStateEnabled(Enum.HumanoidStateType.Ragdoll, false)
Humanoid:SetStateEnabled(Enum.HumanoidStateType.FallingDown, false)

Running this on either the client or server will work, I believe.

#10

So I just need to be running that forever in the humanoid, or set it one time?

#11

And another thing, sometimes super fast players can go through parts, especially thins ones. How would I go about fixing that? Maybe make the player’ s parts a lot more dense? Would that change how the player reacts to things?

#12

So I just need to be running that forever in the humanoid, or set it one time?

You’ll just need to run it once when the character spawns in.

And another thing, sometimes super fast players can go through parts, especially thins ones. How would I go about fixing that? Maybe make the player’ s parts a lot more dense? Would that change how the player reacts to things?

Unfortunately there’s not an easy fix to this other than making the thin part in question thicker. Alternatively, you could also insert a (much thicker) invisible part behind it to act as a barricade.

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#13

Ok I tried both your solution, and @keith_220’s solution, and neither fix the issue for some reason, they are still bouncing around all over the place.

#14

Well that’s cool. Its nice to see how well Roblox physics work.

#15

Yup it is still messed up. So annoying…

#16

If I’m not wrong this only happens when your Humanoid’s Walkspeed is way too high, am I right?

#17

Yeah, my only solution right now is to limit the top speed significantly, and with a speed sim type game that isn’t very good.

#18

As far as I know there’s no solution to solve this. It’s all up-to Roblox, to fix this problem.

1 Like