FastCast Raycasting Problem

[VeilStrife (VeilStrifeDudeMan)]

Hey there developers!

I was trying to follow a YT tutorial on using the FastCast and PartCache modules for Raycasting bullets when I came into a problem

The error is saying “Workspace.Semi-Auto Gun.PartCache:141: attempt to call missing method ‘GetFullName’ of table”

Here’s my script.

local tool = script.Parent
local fireEvent = tool.FireEvent
local FastCast = require(tool.FastCastRedux)
local PartCache = require(tool.PartCache)
local firePoint = tool.Handle.FirePoint
local speed = tool:GetAttribute("Speed")
local damage = tool:GetAttribute("Damage")

local bulletsFolder = Instance.new("Folder", workspace) or workspace:FindFirstChild("BulletFolder")
bulletsFolder.Name = "BulletFolder"

local bulletTemplate = Instance.new("Part")
bulletTemplate.Anchored = true
bulletTemplate.CanCollide = false
bulletTemplate.Shape = "Block"
bulletTemplate.Size = Vector3.new(0.2, 0.2, 1)
bulletTemplate.Material = Enum.Material.Neon
bulletTemplate.BrickColor = BrickColor.new("190")
	
--FastCast.VisualizeCasts = false

local caster = FastCast.new()

local castParams = RaycastParams.new()
castParams.FilterType = Enum.RaycastFilterType.Exclude
castParams.IgnoreWater = false

local bulletCache = PartCache.new(bulletTemplate, 300, bulletsFolder)

local castBehavior = FastCast.newBehavior()
castBehavior.RaycastParams = castParams
castBehavior.Acceleration = Vector3.new(0, -workspace.Gravity, 5)
castBehavior.AutoIgnoreContainer = false
castBehavior.CosmeticBulletContainer = bulletsFolder
castBehavior.CosmeticBulletProvider = bulletCache

local function onEquipped()
	castParams.FilterDescendantsInstances = {tool.Parent, bulletsFolder}
end

local function onLenghtChanged(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(damage)
	end
end

local function fire(player, mousePosition)
	local origin = firePoint.WorldPosition
	local direction = (mousePosition - origin).Unit

	caster:Fire(origin,direction, speed, castBehavior)
end

delay(5, function()
	bulletCache:ReturnPart(bulletCache) -- i think this is where the error is happening
end)

fireEvent.OnServerEvent:Connect(fire)

tool.Equipped:Connect(onEquipped)

caster.LengthChanged:Connect(onLenghtChanged)
caster.RayHit:Connect(onRayHit)

The error isn’t being sent from this script its being sent from the PartCache Module

If anybody could help me out, thanks in advance!

-VeilStrife

[JailMasterD]

local tool = script.Parent
local fireEvent = tool.FireEvent
local FastCast = require(tool.FastCastRedux)
local PartCache = require(tool.PartCache)
local firePoint = tool.Handle.FirePoint
local speed = tool:GetAttribute("Speed")
local damage = tool:GetAttribute("Damage")

local bulletsFolder = Instance.new("Folder", workspace) or workspace:FindFirstChild("BulletFolder")
bulletsFolder.Name = "BulletFolder"

local bulletTemplate = Instance.new("Part")
bulletTemplate.Anchored = true
bulletTemplate.CanCollide = false
bulletTemplate.Shape = "Block"
bulletTemplate.Size = Vector3.new(0.2, 0.2, 1)
bulletTemplate.Material = Enum.Material.Neon
bulletTemplate.BrickColor = BrickColor.new("190")
	
--FastCast.VisualizeCasts = false

local caster = FastCast.new()

local castParams = RaycastParams.new()
castParams.FilterType = Enum.RaycastFilterType.Exclude
castParams.IgnoreWater = false

local bulletCache = PartCache.new(bulletTemplate, 300, bulletsFolder)

local castBehavior = FastCast.newBehavior()
castBehavior.RaycastParams = castParams
castBehavior.Acceleration = Vector3.new(0, -workspace.Gravity, 5)
castBehavior.AutoIgnoreContainer = false
castBehavior.CosmeticBulletContainer = bulletsFolder
castBehavior.CosmeticBulletProvider = bulletCache

local function onEquipped()
	castParams.FilterDescendantsInstances = {tool.Parent, bulletsFolder}
end

local function onLenghtChanged(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(damage)
	end

delay(5, function()
	bulletCache:ReturnPart(bullet) 
end)
end

local function fire(player, mousePosition)
	local origin = firePoint.WorldPosition
	local direction = (mousePosition - origin).Unit

	caster:Fire(origin,direction, speed, castBehavior)
end



fireEvent.OnServerEvent:Connect(fire)

tool.Equipped:Connect(onEquipped)

caster.LengthChanged:Connect(onLenghtChanged)
caster.RayHit:Connect(onRayHit)

Explanation:
bulletCache:ReturnPart(param) gets rid of the part given as parameter.
This exists because it should destroy the bullet after it hit something else it would result in a flying bullet just hanging there. Therefore you put this into the onRayHit() function since that’s the function connected to the event which fires once the ray hits something.