lsb_grapplinghook

local re = Instance.new("RemoteEvent", owner.Character)
re.Name = "FakeMouse"

local b1d = Instance.new("BindableEvent", script)
local b1u = Instance.new("BindableEvent", script)
local kup = Instance.new("BindableEvent", script)
local kown = Instance.new("BindableEvent", script)

local mtarg
local mhit = CFrame.new()
local morig = CFrame.new()

local fakeMouse = {
	KeyUp = kup.Event,
	KeyDown = kown.Event,
	Button1Up = b1u.Event,
	Button1Down = b1d.Event
}

fakeMouse = setmetatable(fakeMouse, {
	__index = function(_, key)
		if key == "Hit" then
			return mhit
		elseif key == "Origin" then
			return morig
		elseif key == "Target" then
			return mtarg
		end
	end
})

re.OnServerEvent:Connect(function(plr, t, k)
	if t == "down" then
		kown:Fire(k)
	elseif t == "up" then
		kup:Fire(k)
	elseif t == "b1d" then
		b1d:Fire()
	elseif t == "b1u" then
		b1u:Fire()
	elseif t == "m1" then
		mhit = k
	elseif t == "m2" then
		morig = k
	elseif t == "m3" then
		mtarg = k
	end
end)

NLS([[
	local re = script.Parent
	local m = owner:GetMouse()
	
	m.KeyDown:Connect(function(k)
		re:FireServer("down", k)
	end)

	m.KeyUp:Connect(function(k)
		re:FireServer("up", k)
	end)

	m.Button1Down:Connect(function()
		re:FireServer("b1d")
	end)

	m.Button1Up:Connect(function()
		re:FireServer("b1u")
	end)

	while true do
		task.wait()
		re:FireServer("m1", m.Hit)
		re:FireServer("m2", m.Origin)
		re:FireServer("m3", m.Target)
	end
]], re)

local character: Model = owner.Character or owner.CharacterAdded:Wait()
local mouse: Mouse = fakeMouse

local humanoid: Humanoid = character:WaitForChild("Humanoid")
local torso: Part = character:WaitForChild("Torso")
local ropeTargetPart = Instance.new("Part")
ropeTargetPart.Name = "RopeTarget"
ropeTargetPart.Size = Vector3.new(1,1,1)
ropeTargetPart.CanCollide = false
ropeTargetPart.CanTouch = false
ropeTargetPart.CanQuery = false
ropeTargetPart.Anchored = true
ropeTargetPart.Parent = character

local ropeOrigin = Instance.new("Attachment")
ropeOrigin.Parent = torso
local ropeTarget = Instance.new("Attachment")
ropeTarget.Parent = ropeTargetPart
local rope = Instance.new("RopeConstraint")
rope.Attachment0 = ropeTarget
rope.Attachment1 = ropeOrigin
rope.Parent = torso
rope.Thickness = 0.5
rope.Restitution = 1
rope.Color = BrickColor.Black()

rope.Enabled = false

local grappling = false
local decreaseLength = false

mouse.KeyDown:Connect(function(key)
	if key == " " then
		grappling = false
		decreaseLength = false
	end
end)

mouse.Button1Down:Connect(function()
	if grappling or mouse.Target == nil then return end
	grappling = true
	rope.Enabled = true
	rope.Length = (mouse.Hit.Position - torso.Position).Magnitude
	ropeTargetPart.Position = mouse.Hit.Position
	task.wait(0.2)
	decreaseLength = true
end)

while true do
    local delta = task.wait()
	rope.Visible = grappling
	if (ropeTargetPart.Position - torso.Position).Magnitude <= 10 then
		rope.Enabled = false
		decreaseLength = false
		grappling = false
	end
	if decreaseLength and rope.Length > 5 then
		rope.Length -= delta * math.clamp((ropeTargetPart.Position - torso.Position).Magnitude,5,math.huge)
	end
end