I’m trying to interpolate the camera to follow a target part, which works great at low speeds(for the most part), but trying to follow anything going at a decent speed causes the part to appear as if it’s stuttering.
Here’s some examples:
Camera following player at 16 WalkSpeed
https://i.gyazo.com/fd42b530457c77ab0ca10c4050116904.gif
Camera following player at 100 WalkSpeed
https://i.gyazo.com/05ed543685913de8892ab52d99935b87.gif
Camera following kart at 100 SPS
https://i.gyazo.com/e597ca585553b301871e3e32c7d7e166.gif
Here’s the code:
local camera = workspace.CurrentCamera
local head = game.Players.LocalPlayer.Character:WaitForChild(“Head”)
I’ve tried interpolating at lower speeds, but no matter what I still get stutter. I know the part isn’t actually stuttering though because when I use RenderStepped and set the camera’s CFrame to the head’s CFrame it looks fine:
Camera stuck to head with RenderStepped
https://i.gyazo.com/c9ab756d276be5bfda9dfe9e4c8b70cd.gif
Any ideas on how I could go about interpolating the camera without stutter? I’ve tried using a part with a BodyGyro & BodyPosition, but that has the stutter issue as well. Also, some players have complained about how the part would lag too far behind on their computer, which means it wouldn’t be optimal for lower-end pcs, which is why I want to use :Interpolate().
Oop, looks like another problem has risen. I tried the new code out on a character first and it looked fine at 16 WalkSpeed, so I applied it to the kart. Turns out it still stutters at high speeds, and since the kart has the ability drive upside-down, I can’t use CFrame(pos1,pos2) because the camera will flip.
I made modifications to allow proper rotation:
local chassisCF = chassis:GetRenderCFrame()*CFrame.new(0,7.5,10)
camera.CFrame = camera.CFrame:lerp(chassisCF,.2)
Though I still get this stutter (GIF framerate dampens the stutter a bit):
New CFrame
https://i.gyazo.com/246fc2977a814596a476da5b9caec26c.gif
Edit: No, it's not because the surface has indents
New CFrame[2]
https://i.gyazo.com/f31469a0226ca6546a4cb91a1c1e15d4.gif
Edit: Tried using BindToRenderStep and setting it to a higher priority, doesn't seem to help any.
Try printing the car’s Velocity.magnitude while driving, see if that stutters too. (Then we know whether the car actually stutters, or if it’s a render issue)
As you can see here, even at a constant velocity of 100, there is still stutter. I should re-iterate that everything but the thing that the camera follows seems to be smooth.
Example GIF
https://i.gyazo.com/8e97213de346d372459abf0b3b3aba33.gif
I’ve tried lerping, interpolating, bindtorenderstep, rendercframe, all different kinds of combos, all with no prevail. @Quenty seems to have written an article on this very issue(if not, then a very similar one), explaining how it could be linked to “how ROBLOX is handling parts, and networking, or something….”.
Kinda skimmed through the article, but it seems the problem might be network ownership? Have you tried using SetNetworkOwner and setting the client as the owner of all the car parts?
Of course I am, otherwise the karts would be near un-controllable due to latency. Every part of the kart has NetworkOwnership set to the player. The kart is also parented to the character.
I’ve gone and translated it to Lua, though now I have absolutely no idea how to apply it. I’ve messed around with it a bit, but I don’t understand how to apply it to a Position/CFrame.
I also have a Damping module that I use for smooth camera stuff. I use this in Angels Fifteen to make it feel like your camera is swaying around with the movement of the plane. It’s open-source within my Team Crazy Game Framework:
This is excellent! Though, I integrated it into my game and I still seem to get the stutter effect. I’m certain the kart itself isn’t stuttering because when I simply lock the camera to the chassis with an offset nothing stutters. It makes no sense that the kart appears jittery while everything else looks fine and smooth. Any idea why this might be happening?
I’ve been using First priority, switched to Camera priority and still the same effect. I’m wondering if the stutter is so subtle in first-person that I just don’t notice it or something, but I don’t think that’s the case and I don’t think it has to do with the velocity of the kart since it stutters even while at a constant speed.
Edit: I should also say that the default camera doesn’t show any stuttering either
Edit: I made a repro file(StutterRepro.rbxl) with the roblox jeep to show that it’s not because of my code. The camera script is located in the PlayerGui.
This isn’t meant to be a bump, but I want to make sure this doesn’t go off the radar. This is a huge issue that could make or break my game(and potentially many others in the future), and it would be devastating to have to either cancel the game(very unlikely) after building up a following for the project on both roblox and social media(not to mention the hundreds of hours I’ve poured into it), or to release the game with a horribly jittery camera that hurts the players eyes. I’ve been looking into this issue as much as possible, but I still can’t find anything related to this besides old, abandoned treads from as far back as 2013. Just want to make sure this is at least being looked into. I’ll let this sit for a while before I post again, but this is something that I really need to figure out.
I’m pretty sure this is an issue with the vehicle bouncing and not anything with the camera. When I printed out the Y value of the chassis’s CFrame * the offset constant, I got this:
When I removed the lerping and just set the camera directly to chassisCF, I experienced the same bouncing, so this is definitely a problem with vehicles bouncing on flat terrain and not camera jittering. Physics stuff is @Khanovich’s favorite IIRC.
In my case the kart never physically touches the ground unless going up a steep surface, so I’ve even wondered if it’s not related to how the camera interacts with bodymovers. I’ve read in a few different threads that the update time between bodymovers and the camera are different, resulting in a stutter, but I’m not 100% this is the case. I update the bodymovers and camera on BindToRenderStep at the same priority, so I’m not sure what’s happening, it definitely happens with any physics-based objects I’ve tried it on though. Maybe @Khanovich could shed some light.
, I’ll let you guys know how this works out if it does.