So I have a moving platform, or better said, a moving model. I get the BodyPhysics objects with the Body Velocity and such, but these (From what I've observed) are to move parts alone. However, I am trying to move a model that moves the players standing on top. I was reading this DevForum on how to do this and it was telling how Jailbreak got it's players to stay on the train while it was moving. Here it is:

https://devforum.roblox.com/t/jailbreak-train-platform-system/236339/10

I tried to reinterpret that, but I don't think I am doing it correctly. From what I got from it, was you multiplied the inverse of the average of the CFrames inside the model, then multiplied it by the player's HumanoidRootPart CFrame. That is what I did. I have no errors, but it isn't keeping the player on the platform as it moves up.

I have one script that moves the platform, and one that changes the player's RootPart CFrame. Here are both of them:

Moving The Platform:

local Platform = script.Parent

Platform.PrimaryPart = Platform.Center

while true do
	for i = 1,1 do
		wait()
		Platform:SetPrimaryPartCFrame(CFrame.new(Platform.PrimaryPart.Position + Vector3.new(0,3,0)))
	end
	script.Parent.MovingParts.FirePart.Fire.Heat = 25
	script.Parent.MovingParts.FirePart.Fire.Size = 10
	for i = 1,12 do
		wait()
		Platform:SetPrimaryPartCFrame(CFrame.new(Platform.PrimaryPart.Position + Vector3.new(0,3,0)))
	end
	wait(2.5)
	script.Parent.MovingParts.FirePart.Fire.Size = 2
	script.Parent.MovingParts.FirePart.Fire.Heat = 1
	
	wait(.5)
	
	for i = 1,13 do
		wait()
		Platform:SetPrimaryPartCFrame(CFrame.new(Platform.PrimaryPart.Position + Vector3.new(0,-3,0)))
	end
	wait(3)
end

Changing the RootPart CFrame: 

local MoveFolder = script.Parent.Parent.MovingParts
local startCF = script.Parent.Parent.Center.CFrame
local CFramingParts = MoveFolder:GetChildren()
for i, v in pairs(CFramingParts) do
	startCF = startCF * v.CFrame
	wait()
	return startCF
end
local RelE = startCF / 29 
local Rel = RelE * script.Parent.CFrame:Inverse()

local controller = false
script.Parent.Touched:Connect(function(hit)
	if hit.Parent:WaitForChild("Humanoid") then
		local player = game.Players:GetPlayerFromCharacter(hit.Parent)
		

		player.Character.HumanoidRootPart.CFrame = player.Character.HumanoidRootPart.CFrame * Rel
	end
	script.Parent.TouchEnded:Connect(function(hit)
		if hit.Parent:WaitForChild("Humanoid") then
			local player = game.Players:GetPlayerFromCharacter(hit.Parent)
			player.Character.HumanoidRootPart.CFrame = player.Character.HumanoidRootPart.CFrame / Rel
		end
	end)
end)

Please help me understand what I can do in this situation.

Anonymous