What do you want to achieve?
I want to find the player’s head and mouse positions to cast a raycast from the head position to the mouse position
What is the issue?
It will not cast a ray
What solutions have you tried so far?
I have tried rewriting the script, adding waits, and following the dev hub post
local players = game:GetService("Players")
local player = players.LocalPlayer
local mouse = player:GetMouse()
------------------------------------------------
local rayOrigin = player:WaitForChild("Character", 12).Head.Position
local rayDirection = mouse.Hit.Position
local rayp = RaycastParams.new()
rayp.FilterDescendantsInstances = {workspace.Boxes}
rayp.FilterType = Enum.RaycastFilterType.Include
local function performRaycast(rayOrigin, rayDirection)
local rayResult = workspace:Raycast(rayOrigin, rayDirection)
if rayResult then
print("Instance:", rayResult.Instance)
print("Position:", rayResult.Position)
print("Distance:", rayResult.Distance)
print("Material:", rayResult.Material)
print("Normal:", rayResult.Normal)
else
warn("No raycast result!")
end
end
mouse.Button1Up:Connect(performRaycast)
That certainly could fix part of the problem, although it doesn’t seem to be able to find the player’s character or mouse so I’m unsure if it will help
There’s a few issues with the script so I’ll write them out here:
You’re using player:WaitForChild("Character") and Character is not a descendant of player, rather it’s a property, you can only wait for Instances that are Parented to your Instance, in this case: player. To combat this you can check if the player exists and if it doesn’t you wait for it to load.
local Players = game:GetService("Players")
local localPlayer = Players.LocalPlayer
-- If the first thing is nil then it goes to the second and returns that
local character = localPlayer.Character or localPlayer.CharacterAdded:Wait()
Your Ray Direction is wrong, if you want to get a vector that points from the characters head to the Mouse.Hit.Position then you would use Vector math, more specifically subtracting Vectors. Here is a visual for vector subtraction:
As you can see if you have two vectors, one that points to Position A and one that points to Position B then if you subtract Vector A from Vector B you will get a vector that when placed at the tip of Vector B it will go to the tip of Vector A, thus a Direction Vector.
So in our case we want to get the distance from Character.Head.Position to Mouse.Hit.Position in the direction of the mouse, which would be A - B = C : Mouse.Hit.Position - Character.Head.Position = raycastDirection
So the code would look like this:
local Players = game:GetService("Players")
local localPlayer = Players.LocalPlayer
local Mouse = localPlayer:GetMouse()
local character = localPlayer.Character or localPlayer.CharacterAdded:Wait()
local directionVector = Mouse.Hit.Position - character.Head.Position
So the final code would look like:
local Players = game:GetService("Players")
local localPlayer = players.LocalPlayer
local Mouse = player:GetMouse()
local character = localPlayer.Character or localPlayer.CharacterAdded:Wait()
local rayOrigin = Character.Head.Position
local rayDirection = Mouse.Hit.Position - rayOrigin
local rayp = RaycastParams.new()
rayp.FilterDescendantsInstances = {workspace.Boxes}
rayp.FilterType = Enum.RaycastFilterType.Include
local function performRaycast(rayOrigin, rayDirection)
local rayResult = workspace:Raycast(rayOrigin, rayDirection)
if rayResult then
print("Instance:", rayResult.Instance)
print("Position:", rayResult.Position)
print("Distance:", rayResult.Distance)
print("Material:", rayResult.Material)
print("Normal:", rayResult.Normal)
else
warn("No raycast result!")
end
end
mouse.Button1Up:Connect(performRaycast)
Just note that the code will barely function since you’re getting Mouse.Hit.Position right upon initialization of the script.
I moved the checks for the head into the button detection code
used a cframe for the direction of the ray
and check for character without a waitforchild
local players = game:GetService("Players")
local player = players.LocalPlayer
local mouse = player:GetMouse()
------------------------------------------------
while not player.Character do task.wait() end
local rayp = RaycastParams.new()
rayp.FilterDescendantsInstances = {workspace.Boxes}
rayp.FilterType = Enum.RaycastFilterType.Include
local function performRaycast(rayOrigin, rayDirection)
if mouse.Hit then
local rayOrigin = player.Character:WaitForChild("Head").Position
local rayDirection = CFrame.lookAt(rayOrigin,mouse.Hit.Position).LookVector
local rayResult = workspace:Raycast(rayOrigin, rayDirection)
if rayResult then
print("Instance:", rayResult.Instance)
print("Position:", rayResult.Position)
print("Distance:", rayResult.Distance)
print("Material:", rayResult.Material)
print("Normal:", rayResult.Normal)
else
warn("No raycast result!")
end
else
warn("No mouse.Hit ")
end
end
mouse.Button1Up:Connect(performRaycast)
LookVector is a unit vector so you would have to get the distance from mouse.Hit.Position and rayOrigin and multiply that by the lookVector to get the proper result
local rayOrigin = player.Character:WaitForChild("Head").Position
local ray = mouse.Hit.Position - rayOrigin
local rayDirection = ray.Unit * (ray.Magnitude + 1)
Sorry for the late reply to the both of you, I had school and other things get in the way so i wasn’t at my computer.
Anyways thanks for helping, otherwise I wouldn’t have figured out any of those problems! I still have one problem where it keeps detecting my hats despite the raycast parameters, I also have another issue with the rest of the script (which I removed before making the devforum post) however I’m unsure if I should make a new post or continue under this one.
