Linear Velocity Ball Help

Help and Feedback Scripting Support
,
#1

I want to create a football ball using linear velocity (I tried force and it makes the ball direction really buggy). I used the code below and the direction isn’t buggy anymore but the ball is now extremely laggy. Any solutions to make the ball better?

local ball = script.Parent
wait(1)
ball:SetNetworkOwner(nil)
local Debris = game:GetService("Debris")

function onTouched(otherPart)
	if otherPart.Name == "HitBox" then
		local hitbox = otherPart
		local Char = otherPart.Parent
		local mode = Char.Mode.Value
		local punch = script.Parent.Punch.Value * 2
		local HRP = Char.HumanoidRootPart
		
		if mode == 1 then
			local Attachment = Instance.new("Attachment")
			local LV = Instance.new("LinearVelocity")
			LV.MaxForce = 1e9
			LV.VectorVelocity = HRP.CFrame.lookVector * punch
			LV.Attachment0 = Attachment
			Attachment.Parent = script.Parent
			LV.Parent = script.Parent
			Debris:AddItem(LV, 1)
			Debris:AddItem(Attachment, 1)
#2

First off, is there any reason why you’re creating a new Attachment instance to Ball (script.Parent) in the code instead of adding it to the Ball to begin with? The code will be much cleaner and there would less work for the computer to do, which could help with the lag a bit.

Also, I recommend adding a debouncer, as the problem could be that, due to how finicky Touched is, could end up creating multiple LinearVelocity instances as well as Attachment instances, which could also contribute to the lag.


-- Make sure you add a "Attachment" (called "BallAttachment") instance as a child of "Ball" (script.Parent)
local Ball = script.Parent

-- "debounced" is used to prevent something from being triggered twice unintentionally (which can help with lag)
local debounced = false
function onTouched(otherPart)

   -- Do not use abbreviations or acronyms (unless if they are well-known, like PNG) 
   -- as you are making it difficult on yourself (especially your future self, who would forget 
   -- about the code after a few weeks) on what is what and why those variables exist.

    if (otherPart.Name == "HitBox") then
         local Character = otherPart.Parent
         local Mode = Character.Mode.Value
         local Punch = 2 * Ball.Punch.Value
         local HumanoidRootPart = Character.HumanoidRootPart

         if (Mode == 1) and not (debounced) then

               debounced = true

               local LinearVelocity = Instance.new("LinearVelocity")
               LinearVelocity.MaxForce = 1e9
               LinearVelocity.VectorVelocity = Punch * HumanoidRootPart.CFrame.lookVector
               LinearVelocity.Attachment0 = Ball.BallAttachment
               
               Debris:AddItem(LinearVelocity, 1)

               -- ... (I am assuming there is more code after this point).

               debounced = false
        end

        -- ... (I am assuming there is more code after this point).

Hopefully this will help, and I will be glad to help if you still have issues.

#3

the ball is still really laggy, if you don’t have context already I’m making a hitbox that appears temporarily in front of a player when they press mouse 1, it will then “kick” the ball in the direction they’re facing using linear velocity, but I think there may be a more effective way to make the ball

#4

Try setting the network owner of the ball to the player:

ball:SetNetworkOwner(player)

Roblox switches between players who are rendering the physics in your game, so this should always make the ball’s physics rendered the player kicking the football.

#5

the ball disappears this way for some reason

#6

it is completely removed from the game, nowhere to be found

#7

If there are no errors set the parent of the ball to workspace

local ball = script.Parent
wait(1)
local Debris = game:GetService("Debris")

function onTouched(otherPart)
	if otherPart.Name == "HitBox" then
		local hitbox = otherPart
		local Char = otherPart.Parent
		local mode = Char.Mode.Value
		local punch = script.Parent.Punch.Value * 2
		local HRP = Char.HumanoidRootPart

        local player = game.Players[otherPart.Parent.Name] -- Defining the player
        ball:SetNetworkOwner(player) -- Setting the ball network owner
        ball.Parent = workspace -- Parenting the ball back to workspace

		if mode == 1 then
			local Attachment = Instance.new("Attachment")
			local LV = Instance.new("LinearVelocity")
			LV.MaxForce = 1e9
			LV.VectorVelocity = HRP.CFrame.lookVector * punch
			LV.Attachment0 = Attachment
			Attachment.Parent = script.Parent
			LV.Parent = script.Parent
			Debris:AddItem(LV, 1)
			Debris:AddItem(Attachment, 1)
#8

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