Unable to cast RaycastParams to Vector3

[jjadtru (Jad)]

Hi so I am trying to make a trident go to players in a list but Im having a problem

error

Unable to cast RaycastParams to Vector3

script.Parent.RemoteEvent.OnServerEvent:Connect(function(plr, list)
	local tobject = game.ReplicatedStorage.trident:Clone()
	tobject.Parent = workspace

	for i, player in pairs(list) do
		local playerRootPart = game.Workspace:FindFirstChild(player)
		print(player)
		if playerRootPart then
			local bodyPosition = Instance.new("BodyPosition")
			bodyPosition.Parent = tobject
			bodyPosition.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
			bodyPosition.Position = playerRootPart.HumanoidRootPart.Position

			tobject.Anchored = false

			local raycastParams = RaycastParams.new()
			raycastParams.IgnoreWater = true
			raycastParams.FilterDescendantsInstances = {tobject}

			while true do
				local direction = (playerRootPart.HumanoidRootPart.Position - tobject.Position).unit

				local ray = Ray.new(tobject.Position, direction * 100)
				local hitPart, hitPosition, hitNormal = workspace:Raycast(ray, raycastParams)

				if hitPart then
					local newPosition = hitPosition - (direction * (tobject.Size.magnitude / 2))
					local tweenInfo = TweenInfo.new((newPosition - tobject.Position).magnitude / 50, Enum.EasingStyle.Linear)
					local tween = game:GetService("TweenService"):Create(tobject, tweenInfo, {Position = newPosition})
					tween:Play()
				end

				wait(.1)
			end
		else
			warn("Could not find player or object")
		end
	end
end)

[DargoA]

Replace this:

@JadtrugamingYT1

local ray = Ray.new(tobject.Position, direction * 100)
				local hitPart, hitPosition, hitNormal = workspace:Raycast(ray, raycastParams)

with this:

local raycastResult = workspace:Raycast(tobject.Position, direction * 100, raycastParams)
local hitPart, hitPosition, hitNormal = raycastResult.Instance, raycastResult.Position, raycastResult.Normal

[jjadtru (Jad)]

I get this error Players.Player1.Backpack.Fire.Script:24: attempt to index nil with ‘Instance’

[DargoA]

Oh sorry I think that’s because the Raycast didn’t hit anything so the raycastResult is nil. I think you can replace the “if hitPart then” with “if raycastResult then” and also move the line that sets the hitPart, hitPosition, and hitNormal variables under that conditional statement.

[jjadtru (Jad)]

but thats what allows the trident to tween

[DargoA]

Just do this:

script.Parent.RemoteEvent.OnServerEvent:Connect(function(plr, list)
	local tobject = game.ReplicatedStorage.trident:Clone()
	tobject.Parent = workspace

	for i, player in pairs(list) do
		local playerRootPart = game.Workspace:FindFirstChild(player)
		print(player)
		if playerRootPart then
			local bodyPosition = Instance.new("BodyPosition")
			bodyPosition.Parent = tobject
			bodyPosition.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
			bodyPosition.Position = playerRootPart.HumanoidRootPart.Position

			tobject.Anchored = false

			local raycastParams = RaycastParams.new()
			raycastParams.IgnoreWater = true
			raycastParams.FilterDescendantsInstances = {tobject}

			while true do
				local direction = (playerRootPart.HumanoidRootPart.Position - tobject.Position).unit

				local raycastResult = workspace:Raycast(tobject.Position, direction * 100, raycastParams)

				if raycastResult then
					local hitPart, hitPosition, hitNormal = raycastResult.Instance, raycastResult.Position, raycastResult.Normal
					local newPosition = hitPosition - (direction * (tobject.Size.magnitude / 2))
					local tweenInfo = TweenInfo.new((newPosition - tobject.Position).magnitude / 50, Enum.EasingStyle.Linear)
					local tween = game:GetService("TweenService"):Create(tobject, tweenInfo, {Position = newPosition})
					tween:Play()
				end

				wait(.1)
			end
		else
			warn("Could not find player or object")
		end
	end
end)

[jjadtru (Jad)]

Thanks you so much this works.

[DargoA]

You mind marking mine as the solution for other people’s reference?