Need help tweening with CFrames

[jeuhari30 (Jeuhari)]

I am trying to make an attack that shoots spikes out in all directions

everytime i try tweening the spikes in the direction they’re pointing at they just stand in place and face upwards

I have tried to use different vectors like up and right but i havent found any success yet

for info the orientation indicator shows up on the side of the spike

here is my code i have no idea what went wrong here

		local Spike = script.Spike:Clone()
		Spike.Orientation = Vector3.new(0, Degrees * i, 90)
		Spike.Position = IcyModel.PrimaryPart.Position - Vector3.new(0, 2, 0)
		Spike.Parent = workspace
		
		local SpikeInfo = TweenInfo.new(
			1
		)
		
		local SpikeGoal = {
			CFrame = Spike.CFrame * Spike.CFrame.LookVector * 5
		}
		
		local SpikeTween = TweenService:Create(Spike, SpikeInfo, Goal)
		SpikeTween:Play()

[MysteryX2076 (DrMystery)]

You gotta add the look vector instead of multiplying it. Also you are not supplying the goal params to :Create (ie. you are giving “Goal” instead of “SpikeGoal”); is that a mistake?

[VonsRevenges (VXN)]

Im sure the problem is here:

local SpikeGoal = {
			CFrame = Spike.CFrame * Spike.CFrame.LookVector * 5
		}

Could you try this and let me know what you got?

local SpikeGoal = {
        CFrame = Spike.CFrame * CFrame.new(0, 0, -5)
    }

Also noticed that you added a variable called SpikeGoal, but inside the Tween Parameters You Said Goal.

[MythicalRealm_Studio (Studio)]

It’s because you’re using Spike.CFrame * Spike.CFrame.LookVector * 5,
That does not calculate end position Instead use spike’s orientation to determine it’s direction

local Spike = script.Spike:Clone()
Spike.Orientation = Vector3.new(0, Degrees * i, 90)
Spike.Position = IcyModel.PrimaryPart.Position - Vector3.new(0, 2, 0)
Spike.Parent = workspace

local SpikeInfo = TweenInfo.new(1)

local angle = math.rad(Degrees * i)
local direction = Vector3.new(math.cos(angle), 0, math.sin(angle))

local goalPosition = Spike.Position + direction * 20 -- Your Distance Here

local SpikeGoal = {
    CFrame = CFrame.new(goalPosition, goalPosition + direction)
}

local SpikeTween = TweenService:Create(Spike, SpikeInfo, SpikeGoal)
SpikeTween:Play()

[jeuhari30 (Jeuhari)]

Thanks for pointing out that i used the wrong params and wrong symbols i seem to have missed that because i assumed my math was wrong (it was thanks to mythical for correcting me really appreciate it)

so in short thanks to all of you for helping

[MysteryX2076 (DrMystery)]

Question; why are you using trigo functions here to attain the direction?

local direction = Vector3.new(math.cos(angle), 0, math.sin(angle))

[MythicalRealm_Studio (Studio)]

cos and sin are used here because they’re efficient way to convert an angle into a 2d direction vector

cos angle gives the x and sin angle will give you z of anunit vector on a circle that way we will create a direction vector that points outward from the center at the specified angle which is what we need for a spike around point

Imaging standing in a round room Pointing
cos(angle) would be left and right movement
sin angle would be forward/backward movement
This lets you accurately point to any spot on the room wall

Hope This Help

[MysteryX2076 (DrMystery)]

Oh that’s some advanced stuff. Thanks for the clarification