Im making a vehicle that is controlled through DragDetectors.
It all works when the vehicle is static.
However, once i make the controls actually move the vehicle using a BodyVelocity, it breaks.
What i think is happening is that the DragDetector initializes at a position and as the player/mouse moves, that position doesn’t update with it, leaving the ‘drag session’ behind and making all the calculations incorrect.
This is my last attempt before coming here, it explains what it does in the code using AddConstraintFunction.
That link and this are the only resources i could find on it.
--[[
"ref" = ReferenceFrame, The world pivot of the drag detector
"cf" = CFrame
]]
local drag_detector: DragDetector = ...
local controller: BasePart = ... --The main part that controls the vehicle
local initial_controller_cf: CFrame
local initial_ref: CFrame
drag_detector.DragStart:Connect(function()
initial_ref = drag_detector:GetReferenceFrame()
initial_controller_cf = controller.CFrame
end)
drag_detector:AddConstraintFunction(5,function(proposedMotion: CFrame)
if not initial_ref then
return proposedMotion
end
--[[
[On dragframe update]
Get the amount the controller moved since the start of the 'drag session'
Translate the proposed motion into a ref
Take the controller movement off of the proposed motion to compensate for it
Translate the proposed ref back into a valid motion
]]
local controller_delta_cf = controller.CFrame:ToObjectSpace(initial_controller_cf)
local proposed_ref = initial_ref:ToWorldSpace(proposedMotion)
local compensated_ref = controller_delta_cf:ToObjectSpace(proposed_ref)
local translated_ref = initial_ref:ToObjectSpace(compensated_ref)
return translated_ref
end)
It doesn’t work, exact same results as the second video. I know the code and callback are working because if i change the slightest value it all breaks.
I’d like to think that my logic isn’t wrong and my CFrame math is the problem but i have no idea at this point.
Any help is appreciated.