Issue with my CFrame

[matt1020304050]

So no errors, but I can’t seem to get my part here to tween and face the other part. Some issue with my CFrame.fromEulerAnglesXYZ();
I’m just trying to rotate the Y axis so that it simply turns and faces a part on a flat plane essentially. But while it does rotate it doesn’t rotate and face my part. What am I doing wrong here? Thank you.

wait(3)

local tweenService = game:GetService("TweenService")

local part1 = script.Parent

local part2 = game.Workspace.FacePart -- The part that part1 will face

local rotation = CFrame.lookAt(part1.Part.Position, part2.Position)

local x,y,z = rotation:toEulerAnglesXYZ()

local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.rad(y), 0)

local info = TweenInfo.new(4, Enum.EasingStyle.Linear) -- Tween for 4 seconds with linear easing

local tween = tweenService:Create(part1.Part, info, {CFrame = goal})

tween:Play()

[WHYI_MFAT]

local tweenService = game:GetService("TweenService")

local part1 = script.Parent

local part2 = game.Workspace.FacePart -- The part that part1 will face

local rotation = CFrame.lookAt(part1.Part.Position, part2.Position)

local x,y,z = rotation:toEulerAnglesXYZ()

local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.rad(y), 0) * CFrame.Angles(0, math.rad(180), 0)

local info = TweenInfo.new(4, Enum.EasingStyle.Linear) -- Tween for 4 seconds with linear easing

local tween = tweenService:Create(part1.Part, info, {CFrame = goal})

tween:Play()

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[matt1020304050]

This script just makes it continue rotating in circles.

https://gyazo.com/44254b1647616e9033b91911ed1ecd4d

[matt1020304050]

Anyone have any ideas to fix this here?

[matt1020304050]

? anyone
////////////////////////////////////////

[SelDraken]

Still not clear on what you are wanting to achieve, and what is going wrong.

I put your script into a workspace, and one part moved to another part.

I watched the vid, but I didn’t see anything ‘keep rotating’

So maybe a more detailed explanation would help

[matt1020304050]

https://gyazo.com/44254b1647616e9033b91911ed1ecd4d

It’s not facing the target properly

[SelDraken]

so the entire tank is supposed to be facing the target (block) as it moves… where is it moving, towards the block?

[matt1020304050]

Yes sir!

Right now it seems to only rotate until it’s on it’s side when it reaches the destination.

[SelDraken]

I think that is because the model is not oriented the same as a roblox part.
such as, how parts have a front, back, top, bottom, left, right
I think you tank mesh is rotated incorrectly by 90 degrees on the Y axis.

You could put it in a ‘model’ and weld it to an invisible ‘part’ , or just re-import the mesh but rotate it 90 on the y first, or you can modify your code to calculate the rotation instead of the cframe.lookvector, use the - or + cframe.rightvector

[matt1020304050]

Im already welding all mesh parts to a regular part. And moving that invisibel part

[matt1020304050]

Top: https://gyazo.com/d06fadca247f349554426d3abbf5f063
Right: https://gyazo.com/f9198f5e386ca8466f72be8b079f7362
Left: https://gyazo.com/4695eef83b840fa1c266811b1f879412
Bottom: https://gyazo.com/e3dc05f2505436375e928284193365e4

All 4 of these examples I moved the destination brick.

I’ve tried rotating the main part all 4 ways, and no matter what I do it wont face the destination part properly.

[matt1020304050]

Heck you can test this for yourself. This script has to be wrong. I literally just made a part in the workspace (1 single part) and if I move the part or the destination part. Every time the part faces a different angle.

wait(3)

local tweenService = game:GetService("TweenService")

local part1 = script.Parent

local part2 = game.Workspace.FacePart -- The part that part1 will face

local rotation = CFrame.lookAt(part1.Part.Position, part2.Position)

local x,y,z = rotation:toEulerAnglesXYZ()

local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.deg(y), 0)

local info = TweenInfo.new(4, Enum.EasingStyle.Linear) -- Tween for 4 seconds with linear easing

local tween = tweenService:Create(part1.Part, info, {CFrame = goal})

tween:Play()

[bluebxrrybot (blueberry)]

@matt1020304050

part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.rad(y), 0)

Something seems wrong about this, maybe replace part2.CFrame with CFrame.new(part1.Part.Position) or CFrame.new(part2.Position)?

[matt1020304050]

Using Part1 position wouldn’t make any sense? It’s a part of the model.

And no, doing that changed nothing.

[SelDraken]

Sorry, I had to sleep.
Looking at it fresh this morning, I think you need to not use

local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.deg(y), 0)

but instead use

local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, y, 0)

[SelDraken]

TLDR, the fix was these two line…
original

local x,y,z = rotation:toEulerAnglesXYZ()
local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.deg(y), 0)

fixed

local x,y,z = rotation:toEulerAnglesYXZ()
local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, y, 0)

3Ducks.rbxl (43.8 KB)

Ok, I put 3 ducks, and have them try to get to the ‘pond’
I used a cylinder and rotated it to see if this would prove to be an issue.

The Pink Duck uses your code, with the fix.

wait(3)
local tweenService = game:GetService("TweenService")
local part1 = script.Parent
local part2 = game.Workspace.FacePart -- The part that part1 will face
local rotation = CFrame.lookAt(part1.Part.Position, part2.Position)
local x,y,z = rotation:toEulerAnglesYXZ()
local goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, y, 0)
local info = TweenInfo.new(4, Enum.EasingStyle.Linear) -- Tween for 4 seconds with linear easing
local tween = tweenService:Create(part1.Part, info, {CFrame = goal})
tween:Play()

However the rotation ends up wrong.

The Green Duck uses the fixed code, but slightly different in calculating the goal

local goal = CFrame.fromEulerAnglesXYZ(0, y ,0) + part2.CFrame.Position

this seems to not have the orientation problems associated with the end goal being rotated.

The Yellow Duck is the same as the green duck, but I experimented with adding a Y offset

local goal = CFrame.fromEulerAnglesXYZ(0, y ,0) + part2.CFrame.Position+Vector3.new(0,1,0)

This also seemed to work well.

Hope this helps you.

[hotpocket285]

you already have your rotational value. instead of goal being

goal = part2.CFrame * CFrame.fromEulerAnglesXYZ(0, math.rad(y), 0)

you should add another set of X,Y, and Z to account for its current position and add the rotation u calculated onto it.

local x, y, z = rotation:toEulerAnglesXYZ()
local x2, y2, z2 = part2.CFrame:toEulerAnglesXYZ()

local goal = CFrame.new(part2.Position) * CFrame.fromEulerAnglesXYZ(math.rad(x2), math.rad(y), math.rad(z2))