Gun using FastCast, Bullet generating twice

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#1
  1. What do you want to achieve? Keep it simple and clear!

i want to make a gun using fastcast(FastCastRedux)

  1. What is the issue? Include screenshots / videos if possible!

when i try the gun it generates the bullet twice, on right side of the wall and on left side of the wall, heres the video explaining it:

Server Code:

local Debris = game:GetService("Debris")
local players =  game:GetService("Players")

local player = players:GetPlayers()

local tool = script.Parent

local event = game.ReplicatedStorage.Events.FireEvent
local FastCast = require(game.ReplicatedStorage.Modules.FastCastRedux)
local attachment = tool:WaitForChild(“Handle”).attachment

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

local bulletTemplate = Instance.new("Part")
bulletTemplate.Anchored = true
bulletTemplate.CanCollide = false
bulletTemplate.Shape = "Ball"
bulletTemplate.Size = Vector3.new(0.5, 0.5, 0.5)
bulletTemplate.Material = Enum.Material.Metal

--FastCast.VisualizeCasts = true

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

local caster = FastCast.new()

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

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

local function OnLengthChange(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(50)
	end
	
	Debris:AddItem(bullet, 2)
end

local function fire(Player, MousePos)
	local origin = attachment.WorldPosition
	local direction = (MousePos - origin).Unit
	
	caster:Fire(origin, direction, 1000, castBehavior)
end

tool.Equipped:Connect(OnEquipped)

event.OnServerEvent:Connect(fire)

caster.LengthChanged:Connect(OnLengthChange)
caster.RayHit:Connect(OnRayHit)

thanks. -How4rdy.

2 Likes
#2

Hey, I know this isn’t exactly what you’re asking for. But it might be worth looking into making your own system, since fast casting is extremely easy to recreate on your own using roblox’s new SphereCast function to represent the bullet

Again I know this isn’t really what you’re asking for but I figured it could save you confusion, plus you would have made 100% of the code so you’d know how it all works and be able to easily fix any bugs like this one and the code would probably be a lot shorter too

1 Like