NPC holds tool weirdly

I have an NPC that holds a tool, but it always holds the tool to the side and has its arm backward instead of facing forward as usual. Also, the tool keeps teleporting around the arm and I’ve tried changing the grip and even tried to weld it onto the arm, but I cannot seem to find a fix.

Please post the script that controls how the tool is held.
Copy/Paste it here and add 3 backticks (```) before and after the script so it formats properly here and is easier to read.

This is the Animate script inside the NPC:

	while true do
		local child = parent:FindFirstChild(childName)
		if child then
			return child
		end
		parent.ChildAdded:Wait()
	end
end

local Figure = script.Parent
local Torso = waitForChild(Figure, "Torso")
local RightShoulder = waitForChild(Torso, "Right Shoulder")
local LeftShoulder = waitForChild(Torso, "Left Shoulder")
local RightHip = waitForChild(Torso, "Right Hip")
local LeftHip = waitForChild(Torso, "Left Hip")
local Neck = waitForChild(Torso, "Neck")
local Humanoid = waitForChild(Figure, "Zombie")
local pose = "Standing"

local toolAnim = "None"
local toolAnimTime = 0

local lh = Torso:FindFirstChild("Left Hip")
lh.Part0 = Torso
lh.Part1 = Figure:FindFirstChild("Left Leg")
lh.C0 = CFrame.new(-1, -1, 0, 0, 0, -1, 0, 1, 0, 1, 0, 0)

local rh = Torso:FindFirstChild("Right Hip")
rh.Part0 = Torso
rh.Part1 = Figure:FindFirstChild("Right Leg")
rh.C0 = CFrame.new(1, -1, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0)

local ls = Torso:FindFirstChild("Left Shoulder")
ls.Part1 = Torso
ls.C0 = CFrame.new(2, 0.5, 0, 0, 0, -1, 0, 1, 0, 1, 0, 0)
ls.Part0 = Figure:FindFirstChild("Left Arm")

local rs = Torso:FindFirstChild("Right Shoulder")
rs.Part1 = Torso
rs.C0 = CFrame.new(-2, 0.5, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0)
rs.Part0 = Figure:FindFirstChild("Right Arm")

Figure:MakeJoints()

function onRunning(speed)
	if speed>0 then
		pose = "Running"
	else
		pose = "Standing"
	end
end

function onDied()
	pose = "Dead"
end

function onJumping()
	pose = "Jumping"
end

function onClimbing()
	pose = "Climbing"
end

function onGettingUp()
	pose = "GettingUp"
end

function onFreeFall()
	pose = "FreeFall"
end

function onFallingDown()
	pose = "FallingDown"
end

function onSeated()
	pose = "Seated"
end

function moveJump()
	RightShoulder.MaxVelocity = 0.5
	LeftShoulder.MaxVelocity = 0.5
	RightShoulder.DesiredAngle = 3.14
	LeftShoulder.DesiredAngle = -3.14
	RightHip.DesiredAngle = 0
	LeftHip.DesiredAngle = 0
end

function moveFreeFall()
	RightShoulder.MaxVelocity = 0.5
	LeftShoulder.MaxVelocity = 0.5
	RightShoulder.DesiredAngle = 3.14
	LeftShoulder.DesiredAngle = -3.14
	RightHip.DesiredAngle = 0
	LeftHip.DesiredAngle = 0
end

function moveSit()
	RightShoulder.MaxVelocity = 0.15
	LeftShoulder.MaxVelocity = 0.15
	RightShoulder.DesiredAngle = 3.14 /2
	LeftShoulder.DesiredAngle = -3.14 /2
	RightHip.DesiredAngle = 3.14 /2
	LeftHip.DesiredAngle = -3.14 /2
end

function getTool()	
	for _, kid in ipairs(Figure:GetChildren()) do
		if kid.ClassName == "Tool" then return kid end
	end
	return nil
end

function getToolAnim(tool)
	for _, c in ipairs(tool:GetChildren()) do
		if c.Name == "toolanim" and c.className == "StringValue" then
			return c
		end
	end
	return nil
end

function animateTool()
	
	if (toolAnim == "None") then
		RightShoulder.DesiredAngle = 1.57
		return
	end

	if (toolAnim == "Slash") then
		RightShoulder.MaxVelocity = 0.5
		RightShoulder.DesiredAngle = 0
		return
	end

	if (toolAnim == "Lunge") then
		RightShoulder.MaxVelocity = 0.5
		LeftShoulder.MaxVelocity = 0.5
		RightHip.MaxVelocity = 0.5
		LeftHip.MaxVelocity = 0.5
		RightShoulder.DesiredAngle = 1.57
		LeftShoulder.DesiredAngle = 1.0
		RightHip.DesiredAngle = 1.57
		LeftHip.DesiredAngle = 1.0
		return
	end
end

function move(time)
	local amplitude
	local frequency

	if (pose == "Jumping") then
		moveJump()
		return
	end

	if (pose == "FreeFall") then
		moveFreeFall()
		return
	end
 
	if (pose == "Seated") then
		moveSit()
		return
	end

	local climbFudge = 0
	
	if (pose == "Running") then
		RightShoulder.MaxVelocity = 0.15
		LeftShoulder.MaxVelocity = 0.15
		amplitude = 1
		frequency = 9
	elseif (pose == "Climbing") then
		RightShoulder.MaxVelocity = 0.5 
		LeftShoulder.MaxVelocity = 0.5
		amplitude = 1
		frequency = 9
		climbFudge = 3.14
	else
		amplitude = 0.1
		frequency = 1
	end

	local desiredAngle = amplitude * math.sin(time*frequency)

	RightShoulder.DesiredAngle = desiredAngle + climbFudge
	LeftShoulder.DesiredAngle = desiredAngle - climbFudge
	RightHip.DesiredAngle = -desiredAngle
	LeftHip.DesiredAngle = -desiredAngle

	local tool = getTool()

	if tool then
	
		local animStringValueObject = getToolAnim(tool)

		if animStringValueObject then
			toolAnim = animStringValueObject.Value
			-- message recieved, delete StringValue
			animStringValueObject.Parent = nil
			toolAnimTime = time + .3
		end

		if time > toolAnimTime then
			toolAnimTime = 0
			toolAnim = "None"
		end

		animateTool()

	else
		toolAnim = "None"
		toolAnimTime = 0
	end
end

Humanoid.Died:Connect(onDied)
Humanoid.Running:Connect(onRunning)
Humanoid.Jumping:Connect(onJumping)
Humanoid.Climbing:Connect(onClimbing)
Humanoid.GettingUp:Connect(onGettingUp)
Humanoid.FreeFalling:Connect(onFreeFall)
Humanoid.FallingDown:Connect(onFallingDown)
Humanoid.Seated:Connect(onSeated)

local runService = game:GetService("RunService");

while Figure.Parent ~= nil do
	local _, time = wait(0.1)
	move(time)
end

Also I just replaced the script, fixing the backward arm but the sword is still teleporting around. I don’t think it’s because of the animate script.

Yeah, there’s nothing in here about the tool.
Do you have a script inside the tool, or is there something in the Script or StarterPlayer folders/services.

It does this with every tool, and it is in the NPC

So post the script that places the tool. We can’t do much without knowing what the script is doing.

This line of code moves the tool from ReplicatedStorage to the NPC

 game.ServerStorage.sfothswords.Firebrand.Parent = script.Parent

Ok, but we have to see the part of the script that positions it in the NPC and moves it to the arm.

There is no part of the script that does that, instead it directly parents the tool to the NPC, automatically moving the tool to its arm and rendering it equipped.

“automatically moving the tool to its arm”
But this line of script doesn’t state exactly where the tool is going:
game.ServerStorage.sfothswords.Firebrand.Parent = script.Parent
unless script.Parent is the arm. If that’s the case then every time it got equipped it’d parent it directly to the arm and they’d be welded center to center.

There has to be another script involved if you’re getting this randomized tool placement.

Is there a reason you’re manually “making joints” for the NPC instead of just using the default motor6d stuff by Roblox? I don’t know what’s making it occur, but with a blind guess, I’m leaning towards maybe the default Roblox animation scripts or something is interfering with your animations

Hold on a second.
As @odin12458 said, it may be the animations.

What exactly do you mean by teleporting around on the arm? Do you mean it’s randomly being positioned in different places, or do you mean that the tool is staying in the same place and the arm is being animated around it?
If you’ve got a short video of it happening that’d help us a lot.

1 Like

I switched the animating script, i understand that it was very funky.

I can’t really record it but basically what is happening is that the NPC is gripping the tool in the same spot, but the tool is rotating around that as if it were a centre point.

If you can’t record due to needing recording software then the built in takes very few resources and simply good to go. Ragarding it animating like the “anchor point” is at the center of the tool I’d have to guess comes from the animating being done in a custom way rahter than the default ways of animating.
I’ve never looked much into scripting regarding animation more than the basics so I can’t help much with that, only tip I can give is to check how things are connected with motor6d and maybe try and see if weldconstraint works on a model instead of using tool (for testing). Best of luck though

Ah, so pivoting, not teleporting.

What are you using to attach the tool?
It sounds like you are using a BallSocketConstraint or HingeConstraint.
For animating you probably need to be using a Motor6D. If you are then the animation script is probably sending the wrong angles to it.

There is nothing connecting the tool to the arm, only Roblox Studio tool logic. For the animation script, the new one is here:

function   waitForChild(parent, childName)
	local child = parent:FindFirstChild(childName)
	if child then return child end
	while true do
		child = parent.ChildAdded:Wait()
		if child.Name==childName then return child end
	end
end

local Figure = script.Parent
local Torso = waitForChild(Figure, "Torso")
local RightShoulder = waitForChild(Torso, "Right Shoulder")
local LeftShoulder = waitForChild(Torso, "Left Shoulder")
local RightHip = waitForChild(Torso, "Right Hip")
local LeftHip = waitForChild(Torso, "Left Hip")
local Neck = waitForChild(Torso, "Neck")
local Humanoid = Figure:FindFirstChildOfClass("Humanoid")
local pose = "Standing"

local currentAnim = ""
local currentAnimInstance = nil
local currentAnimTrack = nil
local currentAnimKeyframeHandler = nil
local currentAnimSpeed = 1.0
local animTable = {}
local animNames = { 
	idle = 	{	
				{ id = "http://www.roblox.com/asset/?id=180435571", weight = 9 },
				{ id = "http://www.roblox.com/asset/?id=180435792", weight = 1 }
			},
	walk = 	{ 	
				{ id = "http://www.roblox.com/asset/?id=180426354", weight = 10 } 
			}, 
	run = 	{
				{ id = "run.xml", weight = 10 } 
			}, 
	jump = 	{
				{ id = "http://www.roblox.com/asset/?id=125750702", weight = 10 } 
			}, 
	fall = 	{
				{ id = "http://www.roblox.com/asset/?id=180436148", weight = 10 } 
			}, 
	climb = {
				{ id = "http://www.roblox.com/asset/?id=180436334", weight = 10 } 
			}, 
	sit = 	{
				{ id = "http://www.roblox.com/asset/?id=178130996", weight = 10 } 
			},	
	toolnone = {
				{ id = "http://www.roblox.com/asset/?id=182393478", weight = 10 } 
			},
	toolslash = {
				{ id = "http://www.roblox.com/asset/?id=129967390", weight = 10 } 
--				{ id = "slash.xml", weight = 10 } 
			},
	toollunge = {
				{ id = "http://www.roblox.com/asset/?id=129967478", weight = 10 } 
			},
	wave = {
				{ id = "http://www.roblox.com/asset/?id=128777973", weight = 10 } 
			},
	point = {
				{ id = "http://www.roblox.com/asset/?id=128853357", weight = 10 } 
			},
	dance = {
				{ id = "http://www.roblox.com/asset/?id=182435998", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=182491037", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=182491065", weight = 10 } 
			},
	dance2 = {
				{ id = "http://www.roblox.com/asset/?id=182436842", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=182491248", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=182491277", weight = 10 } 
			},
	dance3 = {
				{ id = "http://www.roblox.com/asset/?id=182436935", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=182491368", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=182491423", weight = 10 } 
			},
	laugh = {
				{ id = "http://www.roblox.com/asset/?id=129423131", weight = 10 } 
			},
	cheer = {
				{ id = "http://www.roblox.com/asset/?id=129423030", weight = 10 } 
			},
}

math.randomseed(tick())

function configureAnimationSet(name, fileList)
	if (animTable[name] ~= nil) then
		for _, connection in pairs(animTable[name].connections) do
			connection:disconnect()
		end
	end
	animTable[name] = {}
	animTable[name].count = 0
	animTable[name].totalWeight = 0	
	animTable[name].connections = {}

	-- check for config values
	local config = script:FindFirstChild(name)
	if (config ~= nil) then
--		print("Loading anims " .. name)
		table.insert(animTable[name].connections, config.ChildAdded:Connect(function(child) configureAnimationSet(name, fileList) end))
		table.insert(animTable[name].connections, config.ChildRemoved:Connect(function(child) configureAnimationSet(name, fileList) end))
		local idx = 1
		for _, childPart in pairs(config:GetChildren()) do
			if (childPart:IsA("Animation")) then
				table.insert(animTable[name].connections, childPart.Changed:Connect(function(property) configureAnimationSet(name, fileList) end))
				animTable[name][idx] = {}
				animTable[name][idx].anim = childPart
				local weightObject = childPart:FindFirstChild("Weight")
				if (weightObject == nil) then
					animTable[name][idx].weight = 1
				else
					animTable[name][idx].weight = weightObject.Value
				end
				animTable[name].count = animTable[name].count + 1
				animTable[name].totalWeight = animTable[name].totalWeight + animTable[name][idx].weight
	--			print(name .. " [" .. idx .. "] " .. animTable[name][idx].anim.AnimationId .. " (" .. animTable[name][idx].weight .. ")")
				idx = idx + 1
			end
		end
	end

	-- fallback to defaults
	if (animTable[name].count <= 0) then
		for idx, anim in pairs(fileList) do
			animTable[name][idx] = {}
			animTable[name][idx].anim = Instance.new("Animation")
			animTable[name][idx].anim.Name = name
			animTable[name][idx].anim.AnimationId = anim.id
			animTable[name][idx].weight = anim.weight
			animTable[name].count = animTable[name].count + 1
			animTable[name].totalWeight = animTable[name].totalWeight + anim.weight
--			print(name .. " [" .. idx .. "] " .. anim.id .. " (" .. anim.weight .. ")")
		end
	end
end

-- Setup animation objects
function scriptChildModified(child)
	local fileList = animNames[child.Name]
	if (fileList ~= nil) then
		configureAnimationSet(child.Name, fileList)
	end	
end

script.ChildAdded:connect(scriptChildModified)
script.ChildRemoved:connect(scriptChildModified)


for name, fileList in pairs(animNames) do 
	configureAnimationSet(name, fileList)
end	

-- ANIMATION

-- declarations
local toolAnim = "None"
local toolAnimTime = 0

local jumpAnimTime = 0
local jumpAnimDuration = 0.3

local toolTransitionTime = 0.1
local fallTransitionTime = 0.3
local jumpMaxLimbVelocity = 0.75

-- functions

function stopAllAnimations()
	local oldAnim = currentAnim

	currentAnim = ""
	currentAnimInstance = nil
	if (currentAnimKeyframeHandler ~= nil) then
		currentAnimKeyframeHandler:disconnect()
	end

	if (currentAnimTrack ~= nil) then
		currentAnimTrack:Stop()
		currentAnimTrack:Destroy()
		currentAnimTrack = nil
	end
	return oldAnim
end

function setAnimationSpeed(speed)
	if speed ~= currentAnimSpeed then
		currentAnimSpeed = speed
		currentAnimTrack:AdjustSpeed(currentAnimSpeed)
	end
end

function keyFrameReachedFunc(frameName)
	if (frameName == "End") then
--		print("Keyframe : ".. frameName)

		local repeatAnim = currentAnim
		
		local animSpeed = currentAnimSpeed
		playAnimation(repeatAnim, 0.0, Humanoid)
		setAnimationSpeed(animSpeed)
	end
end

-- Preload animations
function playAnimation(animName, transitionTime, humanoid) 
		
	local roll = math.random(1, animTable[animName].totalWeight) 
	local origRoll = roll
	local idx = 1
	while (roll > animTable[animName][idx].weight) do
		roll = roll - animTable[animName][idx].weight
		idx = idx + 1
	end
--		print(animName .. " " .. idx .. " [" .. origRoll .. "]")
	local anim = animTable[animName][idx].anim

	-- switch animation		
	if (anim ~= currentAnimInstance) then
		
		if (currentAnimTrack ~= nil) then
			currentAnimTrack:Stop(transitionTime)
			currentAnimTrack:Destroy()
		end

		currentAnimSpeed = 1.0
	
		-- load it to the humanoid; get AnimationTrack
		currentAnimTrack = humanoid.Animator:LoadAnimation(anim)
		 
		-- play the animation
		currentAnimTrack:Play(transitionTime)
		currentAnim = animName
		currentAnimInstance = anim

		-- set up keyframe name triggers
		if (currentAnimKeyframeHandler ~= nil) then
			currentAnimKeyframeHandler:disconnect()
		end
		currentAnimKeyframeHandler = currentAnimTrack.KeyframeReached:Connect(keyFrameReachedFunc)
		
	end

end

-------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------

local toolAnimName = ""
local toolAnimTrack = nil
local toolAnimInstance = nil
local currentToolAnimKeyframeHandler = nil

function toolKeyFrameReachedFunc(frameName)
	if (frameName == "End") then
--		print("Keyframe : ".. frameName)	
		playToolAnimation(toolAnimName, 0.0, Humanoid)
	end
end


function playToolAnimation(animName, transitionTime, humanoid)	 
		
		local roll = math.random(1, animTable[animName].totalWeight) 
		local origRoll = roll
		local idx = 1
		while (roll > animTable[animName][idx].weight) do
			roll = roll - animTable[animName][idx].weight
			idx = idx + 1
		end
--		print(animName .. " * " .. idx .. " [" .. origRoll .. "]")
		local anim = animTable[animName][idx].anim

		if (toolAnimInstance ~= anim) then
			
			if (toolAnimTrack ~= nil) then
				toolAnimTrack:Stop()
				toolAnimTrack:Destroy()
				transitionTime = 0
			end
					
			-- load it to the humanoid; get AnimationTrack
			toolAnimTrack = humanoid:LoadAnimation(anim)
			 
			-- play the animation
			toolAnimTrack:Play(transitionTime)
			toolAnimName = animName
			toolAnimInstance = anim

			currentToolAnimKeyframeHandler = toolAnimTrack.KeyframeReached:Connect(toolKeyFrameReachedFunc)
		end
end

function stopToolAnimations()
	local oldAnim = toolAnimName

	if (currentToolAnimKeyframeHandler ~= nil) then
		currentToolAnimKeyframeHandler:disconnect()
	end

	toolAnimName = ""
	toolAnimInstance = nil
	if (toolAnimTrack ~= nil) then
		toolAnimTrack:Stop()
		toolAnimTrack:Destroy()
		toolAnimTrack = nil
	end


	return oldAnim
end

-------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------


function onRunning(speed)
	if speed>0.01 then
		playAnimation("walk", 0.1, Humanoid)
		pose = "Running"
	else
		playAnimation("idle", 0.1, Humanoid)
		pose = "Standing"
	end
end

function onDied()
	pose = "Dead"
end

function onJumping()
	playAnimation("jump", 0.1, Humanoid)
	jumpAnimTime = jumpAnimDuration
	pose = "Jumping"
end

function onClimbing(speed)
	playAnimation("climb", 0.1, Humanoid)
	setAnimationSpeed(speed / 12.0)
	pose = "Climbing"
end

function onGettingUp()
	pose = "GettingUp"
end

function onFreeFall()
	if (jumpAnimTime <= 0) then
		playAnimation("fall", fallTransitionTime, Humanoid)
	end
	pose = "FreeFall"
end

function onFallingDown()
	pose = "FallingDown"
end

function onSeated()
	pose = "Seated"
end

function onPlatformStanding()
	pose = "PlatformStanding"
end

function onSwimming(speed)
	if speed>0 then
		pose = "Running"
	else
		pose = "Standing"
	end
end

function getTool()	
	for _, kid in ipairs(Figure:GetChildren()) do
		if kid.ClassName == "Tool" then return kid end
	end
	return nil
end

function getToolAnim(tool)
	for _, c in ipairs(tool:GetChildren()) do
		if c.Name == "toolanim" and c.ClassName == "StringValue" then
			return c
		end
	end
	return nil
end

function animateTool()
	
	if (toolAnim == "None") then
		playToolAnimation("toolnone", toolTransitionTime, Humanoid)
		return
	end

	if (toolAnim == "Slash") then
		playToolAnimation("toolslash", 0, Humanoid)
		return
	end

	if (toolAnim == "Lunge") then
		playToolAnimation("toollunge", 0, Humanoid)
		return
	end
end

function moveSit()
	RightShoulder.MaxVelocity = 0.15
	LeftShoulder.MaxVelocity = 0.15
	RightShoulder:SetDesiredAngle(3.14 /2)
	LeftShoulder:SetDesiredAngle(-3.14 /2)
	RightHip:SetDesiredAngle(3.14 /2)
	LeftHip:SetDesiredAngle(-3.14 /2)
end

local lastTick = 0

function move(time)
	local amplitude = 1
	local frequency = 1
  	local deltaTime = time - lastTick
  	lastTick = time

	local climbFudge = 0
	local setAngles = false

  	if (jumpAnimTime > 0) then
  		jumpAnimTime = jumpAnimTime - deltaTime
  	end

	if (pose == "FreeFall" and jumpAnimTime <= 0) then
		playAnimation("fall", fallTransitionTime, Humanoid)
	elseif (pose == "Seated") then
		playAnimation("sit", 0.5, Humanoid)
		return
	elseif (pose == "Running") then
		playAnimation("walk", 0.1, Humanoid)
	elseif (pose == "Dead" or pose == "GettingUp" or pose == "FallingDown" or pose == "Seated" or pose == "PlatformStanding") then
--		print("Wha " .. pose)
		stopAllAnimations()
		amplitude = 0.1
		frequency = 1
		setAngles = true
	end

	if (setAngles) then
		local desiredAngle = amplitude * math.sin(time * frequency)

		RightShoulder:SetDesiredAngle(desiredAngle + climbFudge)
		LeftShoulder:SetDesiredAngle(desiredAngle - climbFudge)
		RightHip:SetDesiredAngle(-desiredAngle)
		LeftHip:SetDesiredAngle(-desiredAngle)
	end

	-- Tool Animation handling
	local tool = getTool()
	if tool then
	
		local animStringValueObject = getToolAnim(tool)

		if animStringValueObject then
			toolAnim = animStringValueObject.Value
			-- message recieved, delete StringValue
			animStringValueObject.Parent = nil
			toolAnimTime = time + .3
		end

		if time > toolAnimTime then
			toolAnimTime = 0
			toolAnim = "None"
		end

		animateTool()		
	else
		stopToolAnimations()
		toolAnim = "None"
		toolAnimInstance = nil
		toolAnimTime = 0
	end
end

-- connect events
Humanoid.Died:connect(onDied)
Humanoid.Running:connect(onRunning)
Humanoid.Jumping:connect(onJumping)
Humanoid.Climbing:connect(onClimbing)
Humanoid.GettingUp:connect(onGettingUp)
Humanoid.FreeFalling:connect(onFreeFall)
Humanoid.FallingDown:connect(onFallingDown)
Humanoid.Seated:connect(onSeated)
Humanoid.PlatformStanding:connect(onPlatformStanding)
Humanoid.Swimming:connect(onSwimming)


-- main program

local runService = game:GetService("RunService");

-- initialize to idle
playAnimation("idle", 0.1, Humanoid)
pose = "Standing"

while Figure.Parent~=nil do
	local _, time = wait(0.1)
	move(time)
end

(free model because im dumb)

I’ve tried welding and sadly it had no effect :frowning: