Player falls off moving platform controlled by physics

Help and Feedback Scripting Support
#1

Hi, I am creating a platformer game and have a system for moving platforms. They are moved with physics (NOT TWEENING) via AlignPosition. However, if platforms are fast, the player slides around and falls off instead of moving with them.


Things I have tried:

  • Increasing the density of the platform and the player
  • Increasing friction
  • This post (This one had the best results but unfortunately using tweening resulted in glitchy behavior while colliding with the platform in any other way than the top of it. The player did not carry the platform’s velocity when exiting it either)

I just cannot seem to get this to function properly. If anybody could help me out, it would be greatly appreciated.

#2

do you have like a script or smth to show

#3

Here is the code that handles the movement:

		local distance = (before.Position - after.Position).Magnitude

		local att = Instance.new("Attachment")
		att.Parent = controlPrimary
		local pos = Instance.new("AlignPosition")
		pos.MaxForce = math.huge
		pos.Mode = Enum.PositionAlignmentMode.OneAttachment
		pos.Responsiveness = math.huge
		pos.Position = before.Position
		pos.Attachment0 = att
		pos.Enabled = true
		pos.Parent = controlPrimary
		controlPrimary.Anchored = false

		if not rotatorFound then
			local rot = Instance.new("AlignOrientation")
			rot.Mode = Enum.OrientationAlignmentMode.OneAttachment
			rot.RigidityEnabled = true
			rot.Attachment0 = att
			rot.Enabled = true
			rot.Parent = controlPrimary
		end

		local switch = false

		local function loop()
			if stopDuration then
				if moveSound then
					moveSound:Stop()
				end
				task.wait(stopDuration)
				if moveSound then
					moveSound:Play()
				end
			end
			local usedDuration
			if switch then
				usedDuration = outDuration or duration
				pos.Position = before.Position
			else
				usedDuration = inDuration or duration
				pos.Position = after.Position
			end
			pos.MaxVelocity = distance / usedDuration
			switch = not switch
			currentTask = task.delay(usedDuration, loop)
		end

		currentTask = task.spawn(loop)
#4

Could you maybe try like welding the player to the platform while they are on it but then remove the weld when they are off it?

#5

That wouldn’t work because then the player would be stuck.

#6

Maybe using a PrismaticConstrain will solve your issue.