How to launch player

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#1

I’m making a grappling hook and I’ve made it so jumping removes the rope and the goal was to fling you, but it wont work. Any ideas/help?

#2

Btw, It does do what I want it to do, but you have to go really fast for it to actually do it

#3

How is the grappling hook logic implemented? (i.e: how does it move the player?)

#4

A rope is attached to a part and attached to the handle of the grappling hook, then it shortens the length of the rope. (the part is anchored so it grabs you and not moves with you)

#5

Ah makes sense; If you remove the hook then there’s nothing pulling the player.

To retain the momentum, you would need to apply a force in the direction of the player’s movement once the player jumps or when spacebar is pressed.

Do you need help with the code implementation?

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#6

maybe, I may have found a fix, but I haven’t tried it yet. I’ll get back to you if I cant figure it out.

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#7

Ok yeah, I didn’t work. Could you help me?

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#8

Yeah could you reply with any scripts/localscripts that you have, like maybe for the grappling hook?

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#9

Okay, here’s my script:

local TweenService = game:GetService("TweenService")

local canUse = true
local ropeIsPulling = false

local humanoid = script.Parent.Parent:FindFirstChild("Humanoid") or script.Parent.Parent.Parent.Character:FindFirstChild("Humanoid")
local hpr = humanoid.Parent:FindFirstChild("HumanoidRootPart")
local handle = script.Parent.Handle

script.Parent.LocalScript.RemoteEvent.OnServerEvent:Connect(function(player, position, object, distance)
	if canUse == true then
		canUse = false

		local hook = Instance.new("Part", script.Parent)
		hook.Anchored = true
		hook.Size = Vector3.new(1, 1, 1)
		hook.CanCollide = false
		hook.Transparency = 0
		hook.BrickColor = BrickColor.new("New Yeller")
		hook.CFrame = CFrame.lookAt(handle.Position, position)

		local rope = Instance.new("RopeConstraint", script.Parent)
		local att0 = Instance.new("Attachment", handle)
		local att1 = Instance.new("Attachment", hook)

		rope.Length = distance - 1
		rope.Attachment0 = att0
		rope.Attachment1 = att1
		rope.Visible = true


		local Speed = 200
		local function GetTime(Distance, Speed)

			local Time = Distance / Speed
			return Time
		end
		local Time = GetTime(distance, Speed)


		local function DestoryHook()
			hook:Destroy()
			rope:Destroy()
			att0:Destroy()
			att1:Destroy()
		end



		if object.Mass >= 100 or object.Anchored == true or object.Parent:FindFirstChild("Humanoid") then
			local tweenInfo = TweenInfo.new(Time, Enum.EasingStyle.Linear, Enum.EasingDirection.Out)
			local tween = TweenService:Create(hook, tweenInfo, {Position = position})
			tween:Play()
			tween.Completed:Wait()


			coroutine.wrap(function()
				local bv = Instance.new("BodyVelocity", handle)
				bv.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
				bv.Velocity = Vector3.new(0, Time * distance + (distance / 1.2), 0)
				wait(Time * 1.1)
				bv:Destroy()
				
			end)()


			humanoid:GetPropertyChangedSignal("Jump"):Connect(function()
				if humanoid.Jump == true and ropeIsPulling == true then
					ropeIsPulling = false
					DestoryHook()
					
					print(hpr.Velocity)
					
					local bv = Instance.new("BodyVelocity", handle)
					bv.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
					bv.Velocity = hpr.Velocity
					
					
					wait(Time * 1.1)
					bv:Destroy()
				end
			end)


			local ropetween = TweenService:Create(rope, TweenInfo.new(rope.Length * 0.015, Enum.EasingStyle.Linear), {Length = 0})
			ropetween:Play()
			ropeIsPulling = true
			ropetween.Completed:Wait()

			DestoryHook()
			ropeIsPulling = false

			task.wait(1)
			canUse = true


		else ------------------------------------------------------------------------------------------------------------------------------


			local tweenInfo = TweenInfo.new(Time, Enum.EasingStyle.Linear, Enum.EasingDirection.Out)
			local tween = TweenService:Create(hook, tweenInfo, {Position = position})
			tween:Play()
			tween.Completed:Wait()


			local grabtween = TweenService:Create(object, TweenInfo.new(rope.Length * 0.015, Enum.EasingStyle.Linear), {Position = handle.Position})
			grabtween:Play()
			ropeIsPulling = true

			TweenService:Create(hook, TweenInfo.new(rope.Length * 0.015, Enum.EasingStyle.Linear), {Position = handle.Position}):Play()
			TweenService:Create(rope, TweenInfo.new(rope.Length * 0.015, Enum.EasingStyle.Linear), {Length = 0}):Play()


			humanoid:GetPropertyChangedSignal("Jump"):Connect(function()
				if humanoid.Jump == true and ropeIsPulling == true then
					ropeIsPulling = false
					DestoryHook()
					grabtween:Cancel()
				end
			end)


			grabtween.Completed:Wait()

			DestoryHook()

			ropeIsPulling = false

			task.wait(1)
			canUse = true

		end			
	end
end)
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#10

Can you change the print statement to “applying force”. Then use the grappling hook, jump, then tell me if you see “applying force” in the output log?

#11

seems to work, but the Y gets way to much power, and the X and the Z dont get enough. Know a way to fix that?

#12

Nevermind, i found a way. Thank you so much!

#13

Actually, it doesn’t really work… Sometimes it just does in a random direction and doesn’t detect the velocity that well.

#14

after tinkering with some stuff, i found a decent solution! thanks

#15

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