ApplyImpulseAtPosition not working on a part owned by the server?

[tacovaIk (CFramed)]

I’m trying to use this function to create knockback from a central point, but the affected players don’t seem to be moving. Here’s my script

local function applyKnockback(plr, origin)
	local hrp: Part = plr.Character.HumanoidRootPart
	hrp:SetNetworkOwner()
	hrp:ApplyImpulseAtPosition(Vector3.new(math.huge, math.huge, math.huge), origin)
	hrp:SetNetworkOwner(plr)
end

[dthecoolest]

Is there any way to make this knockback smoother/less laggy?

So I have done some testing since this is a frequent recurring and interesting topic. So I have done testing with the server network ownership method, the only cons I see is that it’s not smooth for the victim perspective. Video testing, with 0.25 seconds incoming network replication lag: Video uses: .AssemblyLinearVelocity += knockbackVelocity (simple instantaneous velocity method) Humanoid platformstand (to disable humanoid physics interference) Network ownership on serve…

[tacovaIk (CFramed)]

That thread doesn’t really help at all, I’m just wondering why ApplyImpulseAtPosition doesn’t seem to be working at all.

[dthecoolest]

Did you set humanoid platform stand to true like the thread I sent.

[tacovaIk (CFramed)]

Yes, and the knockback works when I just set AssemblyLinearVelocity.

[dthecoolest]

Testing it again, I found out you definitely need a delay of around 0.2 seconds for the force to apply.

and apply impulse should work just as fine.

local RE = script.Parent.RemoteEvent

RE.OnServerEvent:Connect(function(player, hitPlayer)
	local attackerHRP = player.Character.HumanoidRootPart
	local hitPlayerHRP : BasePart = hitPlayer.Character.HumanoidRootPart
	
	local direction = hitPlayerHRP.Position - attackerHRP.Position
	
	print("Server!")
	local victimHumanoid = hitPlayer.Character.Humanoid
	hitPlayerHRP:SetNetworkOwner(nil)
	--victimHumanoid.PlatformStand = true
	local trollFling = Vector3.new(-1,0,0)*50+Vector3.new(0,1,0)*25
	--hitPlayerHRP.AssemblyLinearVelocity += trollFling
	hitPlayerHRP:ApplyImpulseAtPosition(trollFling*50, hitPlayerHRP.CenterOfMass)
	task.wait(0.2)
	hitPlayerHRP:SetNetworkOwner(hitPlayer)
	--victimHumanoid.PlatformStand = false
	print("Can walk now")
end)

Also there seems to be a queue behavior if you apply impulse without setting network owner, the moment you set network owner all the apply impulse will stack and create a bigger one which is neat.

[tacovaIk (CFramed)]

Tysm for the help! The delay was all I needed (Also I spent like 5 minutes pulling my hair out because math.huge breaks ApplyImpulseAtPosition apparently)