Problems with raycasting accuracy

Help and Feedback Scripting Support
#1

I’m tryna to use raycasting to detect when a ball has hit a surface, but for some reason it’s inaccurate most of the time.

Black Leaf - Roblox Studio (gyazo.com)

	local bvel = Instance.new("BodyVelocity",Pebble)
	bvel.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
	bvel.Velocity = Pebble.CFrame.lookVector * 150
	bvel.P = 1250
	
	local Ignore = {Character,game.Workspace.Alive,workspace.Areas,workspace.GarbageCollector}
	function ray(startpos, endpos, dis)
		local test = Ray.new(startpos, CFrame.new(startpos, endpos).lookVector * dis)

		local hit, pos, sf = game.Workspace:FindPartOnRayWithIgnoreList(test,Ignore)
		return hit, pos, sf
	end	
	
	local check
	check = game["Run Service"].Heartbeat:connect(function()
		local h, p, sf = ray(Pebble.Position, Pebble.CFrame * CFrame.new(0,0,-0.4).p, 10)
		if h and not exploded then
			exploded = true
			Pebble.Position = h.Position
			Pebble.Anchored = true
			Pebble.pebble1:Play()
			Pebble.Explode.ParticleEmitter:Emit(20)
			bvel:Destroy()
			game.Debris:AddItem(Pebble,1)
		end
	end)
#2

I’ve realised it mostly applies to buildings and not players, and also when aiming towards the floor

#3

what do you mean by inaccurate?

also, you use a number of deprecated features: BodyVelocity, FindPartOnRayWithIgnoreList, CFrame.p (and Run Service is often used through game:GetService)

#4

there was a gyazo, but i’ve fixed it now the only issue i have is with the ray hitting a character