Get a players Velocity using Only CFrame

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#1

I would like to know if it is possible to get a players Velocity by not using Humanoid or .Velocity, like using only CFrame and Position

#2

You can use the difference of two vectors over a delta of time. Other than that only 1 CFrame/Position won’t give velocity. Though the delta time would have to be very short for it to be decently accurate. Thus why just getting the velocity from a basepart property is easier.

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#3

Because on the client all other players velocities will be zero but I need to still somehow get them

#4

Why do you even need to get that?

#5

Predicting where the player will be in n seconds

#6

Does it return 0 as the assemblylinearvelocity.Magnitude of the humanoidrootpart on the server when moving?

#7

I do not have HumanoidRootPart’s

#8

What Velocity are you trying to measure exactly?

#9

BasePart.Velocity but instead getting it through another means like CFrame

#10

Well, Velocity is change in position every second (I think). CFrame has a Position and an Orientation. Therefore you can simply use the position instead.

The formula would go something like this

local PreviousPosition = BasePart.Position
-- Here is where you either wait a frame you can wait as much or as little time. However if a BasePart is Accelerating then longer wait times will be more innacurate.
-- wait(1) You could use this instead of Stepped
local RunTime, DeltaTime = RunService.Stepped:Wait() -- I am waiting a frame
local CurrentPosition = BasePart.Position

local Velocity = (CurrentPosition - PreviousPosition) / DeltaTime

This is the formula D/T = S
D = Distance
T = Time
S = Speed / Velocity

I recommend you use BasePart.LinearVelocity instead as it is much easier.

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#11

so for every player that is not localplayer and has a head I should loop through them everyframe get their velocities put them in a table?

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