let’s say I have a 2d game, and i have a system that lets the player create parts where they click, but only the x, and y positions of the part should be calculated, since its a 2d game. and there’s a invisible barrier part infront of the camera
I decide to use camera:ViewportPointToRay(mousePos.X, mousePos.Y), and then raycast using it’s origin and direction to calculate the new part’s position, but the problem is, the more far away the mouse from the center of the screen is, the more offset the new part’s position is, due to :ViewportPortToRay() being cast from the center of the screen to the mouse position, which hits the invisible barrier part, which makes it offset without using the Z position
local unitRay = camera:ViewportPointToRay(mouseLocation.X, mouseLocation.Y)
local rayResult = workspace:Raycast(unitRay.Origin, unitRay.Direction * maxDistance, rayParams)
I tried adding mouseLocation - (cam.ViewportSize / 2) to the mouseLocation but that didn’t fix the prolem either
Try using camera:ScreenPointToRay() instead of camera:ViewportPointToRay().
local userInputService = game:GetService("UserInputService")
local workspace = game:GetService("Workspace")
local camera = workspace.CurrentCamera
local rayDistance = 100
local raycastParams = RaycastParams.new()
userInputService.InputBegan:Connect(function(input, processed)
if processed then return end
if input.UserInputType ~= Enum.UserInputType.MouseButton1 then return end
local mousePosition = userInputService:GetMouseLocation()
local ray = camera:ScreenPointToRay(mousePosition.X, mousePosition.Y)
local result = workspace:Raycast(ray.Origin, ray.Direction * rayDistance, raycastParams)
if result and result.Instance then
print(result.Instance)
end
end)
Wouldnt something like this be possible? This uses the player’s mouse and gets the cursors CFrame in the 3D space.
local mouse = game.Players.LocalPlayer:GetMouse()
mouse.Button1Down:Connect(function()
local mouseCf = mouse.Hit
print("CFrame of mouse in 3D space: ", mouseCf)
end)
The invisible barrier doesn’t even matter, as you can see im clicking on nothing, which returns the unitray origin + unitray direction, and it still has the issue
See the image below. The mouse is where i clicked, the black part is where it spawned.
Did you remember to also multiply the maxDistance to that return value? As an example the function to get the 3D position of your mouse needs to look something like this:
local function get3DMousePosition()
local mouseLocation = UserInputService:GetMouseLocation() -- I'm assuming you named UserInputService "UserInputService" since it's not visible in the script you provided
local ray = camera:ViewportPointToRay(mouseLocation.X, mouseLocation.Y)
local raycastResult = workspace:Raycast(ray.Origin, ray.Direction * maxDistance, rayParams)
if raycastResult then
return raycastResult.Position
else
return ray.Origin + ray.Direction * maxDistance
end
end
Note that the return value when raycastResult is nil is ray.Origin + ray.Direction * maxDistance not just ray.Origin + ray.Direction
