Unable to cast Instance to Vector3 from Player Humanoid

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#1

I am working on a climbing system for my game that uses ray casts to detect where the player is and how far they are from a climbable wall. I get an error (Unable to cast Instance to Vector3) however it is not concerning my variables, instead it’s erroring this:

local raycastResult = workspace:Raycast(rayOrigin, rayDirection)

I have searched for a solution however I cannot find one that casts from a humanoid/player, only the player’s head. I have tried adding .Position to my Humanoid declaration line here:

local rayOrigin = script.Parent:WaitForChild("Humanoid", 100)

However it errors once again. My entire code for just the ray cast is here, as I want to finish this part before I get to moving the player:

local rayOrigin = script.Parent:WaitForChild("Humanoid", 100)
local rayDirection = Vector3.new(0, 0, 10)

local raycastResult = workspace:Raycast(rayOrigin, rayDirection)

local function rayHit()
	if raycastResult then
		local hitPart = raycastResult.Instance
		
		if hitPart.isClimbable == true then
			print("Raycast hit!")
		end
	end
end

My script is located in StarterCharacterScripts incase anyone asks. I am thinking it might be something to do with the hitPart.Instance line, however that makes no sense since I didn’t tie a Vector3 to it.

Thanks!

1 Like
#2

rayOrigin needs to be a Vector3. You are setting it to be the Humanoid instance. Use the root part’s position instead.

#3

Is this what you meant?

local Root = script.Parent:WaitForChild("HumanoidRootPart", 100)

local rayOrigin = Root.Position
local rayDirection = Vector3.new(0, 0, 10)

local raycastResult = workspace:Raycast(rayOrigin, rayDirection)

local function rayHit()
	if raycastResult then
		local hitPart = raycastResult.Instance
		
		if hitPart.isClimbable == true then
			print("Raycast hit!")
		end
	end
end

If so, I get no errors, however, the ray cast is not hitting the part/it’s not detecting it.

#4

the ray direction should be changed and you forgot to call the rayhit function

local Root = script.Parent:WaitForChild("HumanoidRootPart", 100)

local rayOrigin = Root.Position
local rayDirection = Root.CFrame.LookVector * 1000

local raycastResult = workspace:Raycast(rayOrigin, rayDirection)

local function rayHit()
	if raycastResult then
		local hitPart = raycastResult.Instance
		
		if hitPart.isClimbable == true then
			print("Raycast hit!")
		end
	end
end
rayHit()
1 Like
#5

Thank you! I totally forgot lol. I wish I could mark 2 posts as a solution!