FastCast is inaccurate

Help and Feedback Scripting Support
#1

Hello!
I’m making a 2D shooter game and using the FastCast module for my weapon systems.
My weapons only fire at the x, y-axis, and the z-axis always = 0
But when I test my weapon, the bullet is very inaccurate(picture below)

Screenshot thingy
Screenshot thingy2560×1600 1.94 MB

I tried to fix it but it doesn’t work.
(The script in replies)

#2

Client:

local tool = script.Parent
local player = game:GetService("Players").LocalPlayer
local mouse = player:GetMouse()
local FireEvent = tool:WaitForChild("FireEvent")

tool.Activated:Connect(function()
	local MousePositionX = mouse.hit.Position.X
	local MousePositionY = mouse.Hit.Position.Y
	local MousePosition = Vector3.new(MousePositionX, MousePositionY, 0)
	FireEvent:FireServer(MousePosition)
end)

Server:

local tool = script.Parent
local FireEvent = tool.FireEvent
local FastCast = require(tool.FastCastRedux)
local FirePoint = tool.Handle.FirePoint
local Bullet = game.ReplicatedStorage.Bullet	



FastCast.VisualizeCasts = true

local caster = FastCast.new()

local BulletFolder = workspace.BulletFolder
local BulletTemplate = Bullet:Clone()



local FastCastParam = RaycastParams.new()
FastCastParam.FilterType = Enum.RaycastFilterType.Blacklist
FastCastParam.IgnoreWater = true



local CastBehavior = FastCast.newBehavior()
CastBehavior.AutoIgnoreContainer = false
CastBehavior.RaycastParams = FastCastParam
CastBehavior.CosmeticBulletContainer = BulletFolder
CastBehavior.CosmeticBulletTemplate = BulletTemplate

local function OnEquipped(player)
	FastCastParam.FilterDescendantsInstances = {tool.Parent, BulletFolder}
	
end

local function OnLengthChanged(cast, lastPoint, direction, length, velocity, bullet)
	if bullet then
		local bulletLength = bullet.Size.Z/2
		local offset = CFrame.new(0, 0, -(length-bulletLength))
		bullet.CFrame = CFrame.lookAt(lastPoint, lastPoint+direction):ToWorldSpace(offset)
	end
end

local function onRayHit(cast, result, velocity, bullet)
	local hit = result.Instance

	local character = hit:FindFirstAncestorWhichIsA("Model")
	if character and character:FindFirstChild("Humanoid") then
		character.Humanoid:TakeDamage(20)
	end
	
	game:GetService("Debris"):addItem(bullet, 2)
end
	


local function fire(player, MousePosition)
	if tool.Parent:IsA("Backpack") then return
		
	end
	
	local origin = FirePoint.WorldPosition
	local direction = (MousePosition-origin)
	local FireSound = tool.Handle.Firesound
	
	caster:Fire(origin,direction, 350, CastBehavior)
	FireSound:Play()
end

FireEvent.OnServerEvent:Connect(fire)

tool.Equipped:Connect(OnEquipped)

caster.LengthChanged:Connect(OnLengthChanged)
caster.RayHit:Connect(onRayHit)
#3

Hey, if you’re having issues using FastCast, I’d just use regular Raycasts.