:ApplyImpulse() isn't smooth

Help and Feedback Scripting Support
#1

I’m currently using :ApplyImpulse() to fire a paintball from a gun, but the paintball doesn’t fly very smoothly. Is there anything else that could produce the same effect but that’s less glitchy?

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#2

Can you describe the current way the paintball flies, and how you want it to fly? Images/Videos would be preferable.

#3

I have an idea of what it is. Read up on Network Ownership. Network Ownership | Roblox Creator Documentation

Basically, this doesn’t have anything to do with :ApplyImpuse(). It has to do with Roblox changing the paintball’s network owner in the middle of its flight path. If you read the article I sent, you can find an example of how you could fix this. What I would do is set the network ownership to the person who shot the paintball so there isn’t a visual delay for them.

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#4

Hmm ok, that sounds right but whenever I tested it the paintball just fell to the ground and :ApplyImpulse() didn’t do anything. Here’s my script and a video:

local ts = game:GetService("TweenService")
local debris = game:GetService("Debris")

game.ReplicatedStorage.FireEvent.OnServerEvent:Connect(function(plr,pos)
	local char = plr.Character
	local sniper = char:FindFirstChild("Sniper")
	local paintball = game.ServerStorage.Paintball:Clone()
	
	paintball.Parent = game.Workspace
	paintball.CFrame = CFrame.new(sniper.ShootPart.CFrame.Position, pos)
	paintball:SetNetworkOwner(plr)
	paintball:ApplyImpulse(paintball.CFrame.LookVector * 500)
end)

And here’s what happens:

#5

I would try setting the paintballs velocity manually instead of using :ApplyImpulse()

That way, you can verify the ball is actually going the correct velocity

#6

So how would I set the paintball’s velocity manually?

#7

This event is not safe, an exploiter could easily spam this and cause lag by creating objects.

1 Like
#8

Ok…

  1. This isn’t supposed to be a public game, it’s just a game for me to play around with my friend in, there won’t be any exploiters.
  2. The code isn’t done yet.

That wasn’t what I asked for help with bro.

#9

I suggest you use BodyVelocity, yes I know they are deprecated but they don’t require attachments unlike other movers(plus they are easier to set up), you can use MaxForce and Debris to make it last for a certain amount of time.

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#10

Yeah I did use Body Velocity before, but if I use :ApplyImpulse() then gravity will take care of the bullet drop for me. And Body Velocity has the same weird glitchy thing were the bullet lags too, so I still need help.

#11

I think it does have something to do with NetworkOwnership but like I said, the paintball just falls to the ground when I try that.

#12 
local __SPEED = Instance.new("BodyVelocity")
__SPEED.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
__SPEED.Velocity = (sniper.ShootPart.CFrame.LookVector + Vector3.new(0,0,0)) * 90
__SPEED.Parent = paintball

You can try this snippet I have for my projectiles.

#13

No. Use FastCast instead:

You will run into every single problem imaginable if you rely on Roblox physics for this.

#14

Brother are you seriously suggesting FastCast right now. This module is super laggy most of the time.

I understand the game is only for him and his friend, but at the LEAST let him know not to use it with bigger games.

#15

It’s not. I’ve gotten it working on a gun, you just need it on the client.

Are you telling me that every game that uses FE gun kit is not a good game?

#16

AssemblyLinearVelocity works for this task

#17

Yeah, I try and only use my own scripts though, I’m not going to learn if I just copy and paste.

1 Like
#18

So what would you recommend I do?

#19 
local power = 100
local function FireBullet(gun)
    local bullet -- Create bullet here
    bullet.AssemblyLinearVelocity = gun.Handle.LookVector * power
end

This should set the velocity of the bullet in the direction the gun is pointed.

#20

Whether this is the best way to do it or not, I don’t knw, but it works. Thank you! :smiley:

1 Like