Got a little trouble with knockback

Help and Feedback Scripting Support
#1

I want to create a knockback system. For some reason, whenever I knock a player back, the knockback is not displayed on the attacker’s side, but only the resulting position. The knockback is perfect for the player being knocked back.
This is a video of what I’m talking about:
https://streamable.com/mwjtvc

I’m using FireAllClients (as shown by the red highlight), so I really don’t understand what the problem is.
This is the server code:

v.Parent:FindFirstChild("Humanoid").PlatformStand = true
		fm1de:FireAllClients(player, v)
		v.Parent:WaitForChild("HumanoidRootPart").Orientation = player.Character.HumanoidRootPart.Orientation - Vector3.new(0,180,0)
		hit:Play()
		v.Parent:FindFirstChild("Humanoid"):TakeDamage(5)
		v.Parent:FindFirstChild("Humanoid").WalkSpeed = 0
	--	for index, joint in pairs(v.Parent:GetDescendants()) do
	--		task.spawn(function() -- I put the SPAWN function here instead
	--			if joint:IsA('Motor6D') then
	--				local socket = Instance.new('BallSocketConstraint')
	--				local a1 = Instance.new('Attachment')
	--				local a2 = Instance.new('Attachment')
	--				a1.Parent = joint.Part0
	--				a2.Parent = joint.Part1
	--				socket.Parent = joint.Parent
	--				socket.Attachment0 = a1
	--				socket.Attachment1 = a2
	--				a1.CFrame = joint.C0
	--				a2.CFrame = joint.C1
	--				socket.LimitsEnabled = true
	--				socket.TwistLimitsEnabled = true
	--				joint.Enabled = false
	--				task.wait(1)
					v.Parent:FindFirstChild("Humanoid").PlatformStand = false
				v.Parent:FindFirstChild("Humanoid").WalkSpeed = 10

And the local code:

fm1de.OnClientEvent:Connect(function(player, v)
	local mark = Instance.new("Highlight", player.Character)
	v.Parent:FindFirstChild("Humanoid").AutoRotate = false
	local knockbackdir = player.Character.HumanoidRootPart.CFrame.LookVector
	local bg = Instance.new("BodyGyro")
	bg.Parent = v.Parent:WaitForChild("HumanoidRootPart")
	bg.D = 0
	bg.P = 500000
	bg.CFrame = CFrame.lookAt(v.Parent:WaitForChild("HumanoidRootPart").Position, knockbackdir)
	local att = Instance.new("Attachment")
	att.Parent = v.Parent:WaitForChild("HumanoidRootPart")
	local vf = Instance.new("VectorForce")
	vf.Parent = v.Parent:WaitForChild("HumanoidRootPart")
	vf.Attachment0 = att
	vf.Force = Vector3.new(0,5000,10000)
	for index, joint in pairs(v.Parent:GetDescendants()) do
		task.spawn(function() -- I put the SPAWN function here instead
			if joint:IsA('Motor6D') then
				local socket = Instance.new('BallSocketConstraint')
				local a1 = Instance.new('Attachment')
				local a2 = Instance.new('Attachment')
				a1.Parent = joint.Part0
				a2.Parent = joint.Part1
				socket.Parent = joint.Parent
				socket.Attachment0 = a1
				socket.Attachment1 = a2
				a1.CFrame = joint.C0
				a2.CFrame = joint.C1
				socket.LimitsEnabled = true
				socket.TwistLimitsEnabled = true
				joint.Enabled = false
				task.wait(0.1)
				v.Parent:FindFirstChild("Humanoid").AutoRotate = true
				vf:Destroy()
				bg:Destroy()
				att:Destroy()
				task.wait(0.75)
				v.Parent:FindFirstChild("Humanoid").PlatformStand = false
				v.Parent:FindFirstChild("Humanoid").WalkSpeed = 10
				joint.Enabled = true
				socket:Destroy()
			end
		end)
	end
end)

Any help would be greatly appreciated.

3 Likes
#2

You’re experiencing a NetworkOwnership problem, which is why you should be adding the BodyVelocity on the server.

Server code:

v.Parent:FindFirstChild("Humanoid").PlatformStand = true
fm1de:FireAllClients(player, v)
v.Parent:WaitForChild("HumanoidRootPart").Orientation = player.Character.HumanoidRootPart.Orientation - Vector3.new(0,180,0)
hit:Play()

local knockbackdir = player.Character.HumanoidRootPart.CFrame.LookVector

local bg = Instance.new("BodyGyro")
bg.D = 0
bg.P = 500000
bg.CFrame = CFrame.lookAt(v.Parent:WaitForChild("HumanoidRootPart").Position, knockbackdir)
bg.Parent = v.Parent:WaitForChild("HumanoidRootPart")

local att = Instance.new("Attachment")
att.Parent = v.Parent:WaitForChild("HumanoidRootPart")

local vf = Instance.new("VectorForce")
vf.Attachment0 = att
vf.Force = Vector3.new(0,5000,10000)
vf.Parent = v.Parent:WaitForChild("HumanoidRootPart")

v.Parent:FindFirstChild("Humanoid"):TakeDamage(5)
v.Parent:FindFirstChild("Humanoid").WalkSpeed = 0

Client code:

fm1de.OnClientEvent:Connect(function(player, v)
	local mark = Instance.new("Highlight", player.Character)
	v.Parent:FindFirstChild("Humanoid").AutoRotate = false

	for index, joint in v.Parent:GetDescendants() do
		if joint:IsA('Motor6D') then
			local socket = Instance.new('BallSocketConstraint')
			local a1 = Instance.new('Attachment')
			local a2 = Instance.new('Attachment')
			a1.Parent = joint.Part0
			a2.Parent = joint.Part1
			socket.Parent = joint.Parent
			socket.Attachment0 = a1
			socket.Attachment1 = a2
			a1.CFrame = joint.C0
			a2.CFrame = joint.C1
			socket.LimitsEnabled = true
			socket.TwistLimitsEnabled = true
			joint.Enabled = false
			
			task.delay(0.1, function()
				v.Parent:FindFirstChild("Humanoid").AutoRotate = true
				vf:Destroy()
				bg:Destroy()
				att:Destroy()
				task.wait(0.75)
				v.Parent:FindFirstChild("Humanoid").PlatformStand = false
				v.Parent:FindFirstChild("Humanoid").WalkSpeed = 10
				joint.Enabled = true
				socket:Destroy()
			end)
		end
	end
end)
#3

Thanks for the response. Unfortunately, it did not change anything about the knockback. I want to think that it has something to do with the ragdoll script? I don’t know though.

1 Like
#4

Did you ever figure it out? I’ve been struggling with a similar issue, in which making knockback seems delayed on both clients, but normal on the server.

#5

Nope. Sorry to be the bearer of bad news.

#6

Haha no worries man, the delay isn’t the worst at the end of the day, and the game still functions so im okay with it

#7

Have you tried creating the ragdoll on the server?

#8

Yes. I did that with an R6 dummy that was made specifically as a dummy in the game. Since it has no client, it’s knockback must obviously be on the server. Thing is, despite the knockback working perfectly, there’s about a half-second delay for it to actually happen.