Issue's with Raycast

Help and Feedback Scripting Support
#1

I was making a raycast for a wall hop system, but I’m having issue where the raycast doesn’t go from the players humanoid root part to a straight direction.

local char = game.Players.LocalPlayer.Character or game.Players.LocalPlayer.CharacterAdded:Wait()
local humanoid = char:WaitForChild("Humanoid")
local root = char.PrimaryPart

local origion = root.CFrame.Position
local direction = root.CFrame.LookVector.Unit * Vector3.new(8, 1, 8)

local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Blacklist
params.IgnoreWater = true
params.FilterDescendantsInstances = {char}

local part = Instance.new("Part", workspace)
part.Anchored = true
part.Position = origion
part.Size = direction
part.CanCollide = false
part.Name = "Visualizer"

game:GetService("RunService").RenderStepped:Connect(function()
	origion = root.Position
	direction = root.CFrame.LookVector.Unit * Vector3.new(8, 1, 8)
	
	part.Position = origion
	part.Size = direction
	local forwardRay = workspace:Raycast(origion, direction, params)
	
	part.Position = origion
	part.Size = direction
	
	if forwardRay then
		print(forwardRay.Instance)
	end
end)
#2

Also if your wondering why there’s a strange blur affect, something happened to the file when I was converting the wmv file to an mp4 file.

#3

What do you mean with this, could you elaborate.

#4

I’m trying to shoot a ray from the humanoid root part (origin) directly forward 2 units ahead of the origin (direction). The issue is that, the ray’s vizualizer (the part in the video) moves in a strange way, and doesn’t seem to reflect the direction of the ray.

I always want the ray to be infront of the humanoid root part, but it doesn’t seem to be going in that direction.

And also, I want the ray to shoot like this, and for the visual part reflecting the ray to look like this.

image

The part is usualy the size of {0.001, 0.001, 0.001} though.

#5

This is the problem.
You want the position to be something like this:

part.CFrame = root.CFrame * CFrame.new(0,0,-2) -- Either X or Z needs to be offset.
part.Size = Vector3.new(1,1,2) -- either X or Z is the length, this needs to be the length of the raycast or the distance from where it hit.

I dont really suggest this I suggest something like this more instead:

(root.CFrame.LookVector * Vector3.new(8, 1, 8)).Unit * 8
#6 
Workspace.StarJ3M.WallHop:23: invalid argument #1 (CFrame expected, got Vector3)

part.CFrame = part.CFrame.LookVector.Unit * CFrame.new(1, 1, 2)
#7

This is wrong, you have to get the direction still, but you dont need the look direction, you want the orientation plus the postion, this is done by getting:

root.CFrame

Now we want to move it forwards so we’d need to add one of the following:

root.CFrame * CFrame.new(2,0,0)
root.CFrame * CFrame.new(-2,0,0)
root.CFrame * CFrame.new(0,0,2)
root.CFrame * CFrame.new(0,0,-2)

Now we have offset the part correctly, we can calculate the size by the length of the raycast, but then we would need to offset the CFrame more so replace the 2 with rayCastLenght/2
and make the size either:

Vector3.new(raycastLength, 0, 0)
Vector3.new(0, 0, raycastLength)
#8

I fixed it, but now I’m having another issue where the raycast only works on one fact of a part.

The ray has some extremely strange collisions…