How to get the player direction

Help and Feedback Scripting Support
#8

What if I change camera as HumanRootPart?

#9 

Plr = game.Players.LocalPlayer

function prnt(Value)
	Plr.PlayerGui.ScreenGui.T.Text = tostring(Value)
end

game:GetService("RunService").Heartbeat:Connect(function()
	local Char = Plr.Character or Plr.CharacterAdded:Wait()
	
	local rot =
		CFrame.fromMatrix(
			Vector3.new(), 
			Char:WaitForChild("HumanoidRootPart").CFrame.RightVector, 
			Vector3.new(0, 1, 0)
		)

	local relativeDirection = rot:Inverse() *
		Char.Humanoid.MoveDirection
	
	prnt(
		Vector3.new(
			math.floor(relativeDirection.X),
			math.floor(relativeDirection.Y),
			math.floor(relativeDirection.Z)
		)
	)
end)

I tried this but the results are strange, I want to check if the player is moving forward, sideways, and put it all in a vector

#10

Head could move due to animations, it’s better to use the root part in most cases.

#11

I realize this, that is why I said

EDIT: by “looking at” I mean where the head is looking, should’ve worded it better

#12

Relative to what, though?
The camera?
Their front face?
The baseplate?

#13

Relative to the velocity, like something with linear velocity and orientation, when u get the assembly linear velocity, its relative to the world, but I want it relative to the body.

#14

Try HumanoidRootPart.Velocity.Unit

#15

Try replacing math.floor here with math.round.

#16

I should’ve read this first, you could try using an inverse CFrame here on the HRP.

local root = -- humanoid root part

local relativeVelocity = (root.CFrame - root.Position):Inverse() 
    * root.AssemblyLinearVelocity

-- moving forward should result in (0, 0, 16)

Edit: I forgot to take out the HRP’s position, oops.

2 Likes
#17

What do you mean with this? why?

#18

Using math.floor here would mean unit vectors are biased towards the negative side. Something really close to a forward vector like (-0.0001, 0, 0.99998) would be floored to (-1, 0, 0), whereas rounding would result in (0, 0, 1).

#19

If I’m not mistaken, you could use :VectorToObjectSpace to get the velocity relative to the CFrame of whatever part of the character you’d want.

Here’s an example:

local Part = script.Parent

local ObjectSpaceVelocity = Part.CFrame:ToObjectSpace(Part.AssemblyLinearVelocity) -- should return the part's velocity relative to its position
1 Like
#20

it didn’t worked well… amogus

#21

Do you mind telling how it didn’t work? Also how did you use the function?

#22

I think i will use User input service, because it’s to much complex

#23

You’ll have to be more specific, I don’t know what you’re looking for.

You want the move direction… relative to the velocity direction? That doesn’t make sense. Can you be more specific, or maybe give examples?

#24

I want the velocity relarive to the body orientation, if the body are moving toward orientation = (0,0,0) then the value should be (0,0,16) beacause the z is the look vector

#25

Many people have answered how to do this.

For example, @goldenstein64’s solution:

image

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local root = character:WaitForChild("HumanoidRootPart")

while wait() do
	local relativeVelocity = (root.CFrame - root.Position):Inverse() 
		* root.AssemblyLinearVelocity
	print(relativeVelocity)
end

Prints this while walking forward (holding W):

image

i.e. -16 in the Z direction (as expected)

and this while strafing right (holding D in first person):

image

i.e. +16 in the X direction.

@Ferghins’s solution would do the same thing.

Is that not what you’re looking for?

I know you say

But really, “forward” is in the negative Z direction, not positive Z.

1 Like
#26

Yes! that’s exactly what I want, thank you and @goldenstein64 and everyone that helped me.

#27

Feel free to mark @goldenstein64’s reply as the solution, I just copy pasted their code to prove it worked.