Projectile not accurate

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#1

I’m trying to use BodyVelocity to make a projectile go where the mouse is, but the projectile isn’t accurate.

Here’s the script that fires the ball.

local rp = game:GetService("ReplicatedStorage")
local Blast = rp:WaitForChild("Blast")

local Ball = script:WaitForChild("Ball")
local Speed = Ball.Speed.Value

Blast.OnServerEvent:Connect(function(Player,direction)
local Character = Player.Character
local HRP = Character:WaitForChild("HumanoidRootPart")

local Projectile = Ball:Clone()
local BodyVelocity = Projectile.PrimaryPart.BodyVelocity
Projectile:SetPrimaryPartCFrame(CFrame.new(HRP.Position))
BodyVelocity.Velocity = direction.lookVector * Speed
Projectile.Parent = workspace
end)
#2

Is there a speed value? Or is it just speed. Also I respect your avatar

#3

Speed is using a NumberValue, this is the hierarchy.
hierarchy

#4

That makes more since. I thought it was in another script.

#5

The project if anyone needs it.
Projectile.rbxl (28.8 KB)

#6

What is direction? Can you show the block of code where this function is called?

#7

Velocity is probably changing if the Ball is unanchored.

#8

I’ve had this same problem before, it’s actually surprising just how simple it is to fix this.

all you have to do is:

Ball.CFrame = CFrame.LookAt(Ball.Position, Mouse.Hit.Position)

BodyVelocity.Veolcity = Ball.CFrame.LookVector * 10 —Times it by how fast you want the ball to go.

Hope this helped!

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#9

Don’t you mean:

Mouse.Hit.Position
#10

Yes sorry, it was a typo. I’m on my phone so it’s kinda hard to type.

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#11

Sorry about that, this is the local script that activates the script above.“direction” is Mouse.Hit.

local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()


local rp = game:GetService("ReplicatedStorage")
local Blast = rp:WaitForChild("Blast")

local UIS = game:GetService("UserInputService")
local debounce = false
local cooldown = 2

UIS.InputBegan:Connect(function(input,isTyping)
	if isTyping then
		return
	elseif input.KeyCode == Enum.KeyCode.Q then
		if debounce == false then
			debounce = true
			Blast:FireServer(Mouse.Hit)
			wait(cooldown)
			debounce = false
		end
	end
end)
#12

For what it’s worth, here is a more direct method that is less resource intensive than using CFrames.
Direction = End - Start
So in a one-dimensional example, let’s say I start and 7 and want to end at 13. 13-7 = 6 so the direction is positive or +1 and the distance is 6.
To implement this in your code, you would do this.

BodyVelocity.Velocity = (direction.p - HRP.Position).Unit * Speed

Using .Unit gives us a direction that has a length of only one. If .Unit were not included, it would still function however the speed would increase drastically depending on how far away the target was.

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