My double jump script proceeds with double jumping; even if I am only planning to jump once and not twice in a row

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#1

Hello! I am still a relatively new Roblox Scripter (only been learning luau for a few months)

I am trying to script a double jump system for my game; however whenever I only jump once and not twice in a row; it still double jumps! It’s in StarterCharacterScripts and is a LocalScript.

In the video; I am only holding jump for a slight amount of time then releasing; but not tapping jump again in the middle of my jump.

Here is the code that is related to this issue:

debounce = false
jumpAmount = 0
hum = script.Parent.Humanoid
uis = game:GetService("UserInputService")
uis.JumpRequest:Connect(function()
	if hum:GetState() == Enum.HumanoidStateType.Dead then return end
	if debounce == false and hum:GetState() == Enum.HumanoidStateType.Freefall then
		jumpAmount += 1
		print(jumpAmount)
		task.wait((2 * hum.JumpHeight / ((workspace.Gravity*hum.JumpPower) * 2) + 0.5) / 2)
		if jumpAmount == 1 then return end
		debounce = true
		hum.JumpPower = hum.JumpPower * 5
		hum:ChangeState(Enum.HumanoidStateType.Jumping)
		repeat wait() until hum:GetState() == Enum.HumanoidStateType.Landed
		jumpAmount = 0
		debounce = false
	end
end)

Thanks.

2 Likes
#2

Only here you reset the jumpAmount. So each time a player jumps the jumpamount increases by 1.

Let me give you an example to make it more simple:

Player Jumps
jumpAmount += 1 (now the jumpAmount is equal to 1)
Player Jumps again (not double jump)
jumpAmount += 1 (now the jumpAmount is equal to 2, so now the player does a double jump)
Player Jumps again
jumpAmount += 1 (now the jumpAmount is equal to 1, because jumpAmount is resetted after a double jump)

To fix this you can edit the following part:

		if jumpAmount == 1 then return end

to:

if jumpAmount == 1 then
			jumpAmount = 0
			return
		end

Now, when a player jumps onces, it will reset the jumpamount and return so the double jump is not executed.

An if the player holds the space button it will do a double jump.

Hope this helped you, if you have any other questions let me know! :+1:

2 Likes
#3

Thanks, it worked mostly but I would like it to only work when the player is tapping jump in the middle of their jump, not while they’re holding jump.

1 Like
#4

I have found Can I detect when the player stops holding the jump button on their device? - #2 by sleitnick to work; but I’d like to see if you have a better solution then I’ll mark your reply as the solution. Thanks!

#5

Hmm. I don’t have a better solution than using the Jump Property of a player… sorry