How to detect if a player walked ON TOP of a part

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1

I have a been working on a remake of the 2007 physics (i know how original) and ive came into a problem to do with the animations.

You see when ever a play walks up/onto a part it plays the climb animations for a split second kind of flicking their arms back, the problem is that the script has no way to differentiate if a play walked over/onto the part and i don’t know how i would go about doing that

I’ve tried searching but all my results have to do with just touching a part because of how people word things and i have no idea how i would go about doing this.


(Video of March 2007 client)

as you can see in the video i can walk around ontop of a part and it wont flick the arms but as soon as i walk ontop of another part it flicks the arms if i used .Touched then it would activate all the time when ever im walking on or into the floor or a wall.

I was thinking something to do with raycasting but it will only raycast from one point and would be quite messy for everypart to have a raycast from it not to mention I don’t really know much about raycasting. All I’m really asking for is if anyone knows how i could detect if the player walked up ontop of a part and how i could achieve it as i have quite literally no ideas

2

Raycasting and getting normal vector
And then doing some calculations to ensure that it faces up to at least certain procentage.

3

Sorry i am REALLY bad when it comes to understanding this sort of thing you might have to explain in slightly more basic terms as i don’t really understand what you mean

4

I cant really go in depth without overgenerializing it becouse im just here telling you possible solutions and i really dont know what code you made nor do i want to know it in depth

Basically you can do a blockcast down like 2 studs (depending on hipheight) and see if it hits a surface that faces upwards or ALMOST upwards

5

You can raycast down each frame and keep track of the position the ray hit. Then, if it ever hits a different part and the hit position was above the last, we know the player walked up or jumped up.

Here’s a basic example of that:

local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local localPlayer = Players.LocalPlayer
local character = localPlayer.Character or localPlayer.CharacterAdded:Wait()
local lastPart = nil
local lastPosition = nil

RunService.PostSimulation:Connect(function()
	local primaryPart = character.PrimaryPart

	if not primaryPart then
		return
	end

	local humanoid = character:FindFirstChildOfClass("Humanoid")
	
	if not humanoid then
		return
	end
	
	local rayLength = humanoid.HipHeight + primaryPart.Size.Y * 0.5 + 0.01
	local raycastParams = RaycastParams.new()
	raycastParams.FilterType = Enum.RaycastFilterType.Exclude
	raycastParams.FilterDescendantsInstances = { character }

	local raycastResult = workspace:Raycast(primaryPart.Position, rayLength * -Vector3.yAxis, raycastParams)

	if raycastResult then
		if lastPart and raycastResult.Instance ~= lastPart and raycastResult.Position.Y > lastPosition.Y then
			print("Player walked up.")
		end
		
		lastPart = raycastResult.Instance
		lastPosition = raycastResult.Position
	end
end)

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