Dynamic Field of View

[Towphy]

Hmm works fine with me, remember this is using WalkSpeed not the characters velocity. Using the characters velocity would still be the same concept.

For me:

walk speed is equal to 16:

walk speed is equal to 25:

[Earthraphobic2]

Oh yeah, sorry I didn’t realize that . How would I make it so that it’s based off of the velocity?

[Towphy]

Well it would most likely use the same math concept just sorta tweaked. You’d most likely want to use AssemblyLinearVelocity.Magnitude in place of WalkSpeed.

[Earthraphobic2]

So like :GetPropertyChangedSignal(“AssemblyLinearVelocity”)???

[Earthraphobic2]

Also would defaultWalkSpeed be tweaked or remain the same in the formula?

[Scottifly]

And be sure to get the new Velocity in a while true do loop, or in a function that checks for change in the Velocity.

[Earthraphobic2]

What do you mean by that?

I’m just confused about how to check the Velocity changing

[Scottifly]

It’s a Property of a Part.
A value in studs/second.
BasePart.AssemblyLinearVelocity

So in the script you posted:

local humanoid = char:WaitForChild('Humanoid')
local velocity = humanoid.RootPart.Velocity

humanoid:GetPropertyChangedSignal(velocity):Connect(function()
	camera.FieldOfView = defaultFOV * (humanoid.WalkSpeed / defaultWalkSpeed) 
	-- most of this would just be very basic math^**
end)

[Pure_Bacn]

Not quite… GetPropertyChangedSignal takes a string not a vector3, and the code still changes based on walkspeed so that wouldn’t work either. Something like this should probably do the trick (Reply if there’s a bug I didn’t test it. Code goes in Localscript preferably in startercharacterscripts although startergui works too):

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()

local camera = workspace.CurrentCamera

local max = 120
local min = 70
local dampen = 10

char.PrimaryPart:GetPropertyChangedSignal("Velocity"):Connect(function()
	camera.FieldOfView = math.clamp(70 + char.PrimaryPart.Velocity.Magnitude/dampen,min,max) -- tweak around with dampen to increase/decrease the linear change in fov
end)

Edit: You can also use tweeting to make it a bit smoother but it is optional.

[Scottifly]

Hehe, yeah, it’s a string.
Late night and not a whole lot of experience with the finer points of scripting yet.
I often know the procedures of how to make things work, I just don’t have the skills to type out the lines of code properly so lua can understand what I’m trying to do…

[TheNamesLua]

If I’m not mistaken I don’t think properties like Velocity, Position, CFrame fire GetPropertyChangedSignal because of how frequently they change.

[Pure_Bacn]

I’m pretty sure they do, however in the case they don’t the alternative is just to use renderstepped.

[7z99 (cody)]

They (at least CFrame, position and orientation) don’t fire when they’re updated via physics, it’ll fire if you manually write to part.CFrame/part.Position etc

[majdTRM]

Probably Heartbeat would be better, since it fires after the physics frame.
EDIT: Heartbeat, not PostSimulation. Not sure what PostSimulation is there doesn’t seem to be any information regarding it.

[Earthraphobic2]

I tried this but it didn’t work. No errors in the output, just simply does not work.

Edit: I tried using print statements and it works as expected all until the function.

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()
print('Player added.')

local camera = workspace.CurrentCamera
print('Acquired camera.')

local max = 120
local min = 70
local dampen = 10
print('Set locales.')

char.PrimaryPart:GetPropertyChangedSignal("Velocity"):Connect(function()
	print('Detected.')
	camera.FieldOfView = math.clamp(70 + char.PrimaryPart.Velocity.Magnitude/dampen,min,max) -- tweak around with dampen to increase/decrease the linear change in fov
	print('Changed Field of View.')
end)

Just ends after print('Set locales.')

[Scottifly]

So do as the others have suggested and instead of a function that waits for a property changed signal, use a Heartbeat loop that gets the Velocity each frame of the game playing.

[Earthraphobic2]

Sorry if this is annoying lool but how do I get the velocity of each frame?? I’m decent at scripting, just RunService and velocity are one of my 2 weaknesses.

[1nicopatty (nicopatty)]

Something like this:

local RunService = game:GetService("RunService")

function calculateFov()
    camera.FieldOfView = math.clamp(70 + char.PrimaryPart.Velocity.Magnitude/dampen,min,max) -- tweak around with dampen to increase/decrease the linear change in fov
end

RunService.Heartbeat:Connect(calculateFov)

[Earthraphobic2]

Works like a charm now, thanks so much!