Double Jump Script Not Working

[MR_M3WTWO (Mew)]

Have this script here. It’s is meant to make my character actually double jump, which it doesn’t. It’s also meant to play my custom r6 jump animation then my custom r6 double jump animation. Of course the actual jump animation plays since that’s just using Roblox’s script but double jump and double jump animation isn’t playing. Here’s what I got:

local UserInputService = game:GetService("UserInputService")
local localPlayer = game.Players.LocalPlayer
local character
local humanoid
local canDoubleJump = false
local hasDoubleJumped = false
local oldPower
local TIME_BETWEEN_JUMPS = 0.1 -- The time before you can do another jump
local DOUBLE_JUMP_POWER_MULTIPLIER = 1 -- The amount of times you can jump in the air 
function onJumpRequest()
	if not character or not humanoid or not character:IsDescendantOf(workspace) or humanoid:GetState() == Enum.HumanoidStateType.Dead then
		return
	end


	if canDoubleJump and not hasDoubleJumped then
		hasDoubleJumped = true
		humanoid.JumpPower = oldPower * DOUBLE_JUMP_POWER_MULTIPLIER
		-- Player Jumps Here
		local plrAnimator = humanoid:FindFirstChildOfClass("Animator")
		if plrAnimator then
			local JumpAnimation = plrAnimator:LoadAnimation()
				JumpAnimation:Play()
		end
	end
	
local function characterAdded(newCharacter)
	character = newCharacter
	humanoid = newCharacter:WaitForChild("Humanoid")
	hasDoubleJumped = false
	canDoubleJump = false
	oldPower = humanoid.JumpPower


	humanoid.StateChanged:connect(function(old, new)
		if new == Enum.HumanoidStateType.Landed then
			canDoubleJump = false
			hasDoubleJumped = false
			humanoid.JumpPower = oldPower
		elseif new == Enum.HumanoidStateType.Freefall then
			wait(TIME_BETWEEN_JUMPS)
			canDoubleJump = true
		end
	end)
end
if localPlayer.Character then
	characterAdded(localPlayer.Character)

end


localPlayer.CharacterAdded:connect(characterAdded)

	UserInputService.JumpRequest:connect(onJumpRequest)
end

[NiniScripterXQc (Nini)]

Start by taking out everything related to the connections of your function onJumpRequest and your function characterAdded. Put the characterAdded function out of the onJumpResquest function.

Don’t use LoadAnimation every time you want to play your animation. It is preferable to initialize JumpAnimation in the function onCharacterAdded.

Since you are using the CharacterAdded method of the Player instance, don’t place your LocalScript in StarterCharacterScripts ; instead, put it in StarterPlayerScripts . Otherwise, a new script will be created each time the player obtains a new character, which is unnecessary.

Don’t forget to pass the Animation instance to the LoadAnimation method of the Animator.

JumpAnimation = plrAnimator:LoadAnimation(script:WaitForChild("JumpAnimation"))

Finally don’t forgot to use ChangeState to make the jump player again.

humanoid:ChangeState(Enum.HumanoidStateType.Jumping)

After adjustment your script should look like this:

local UserInputService = game:GetService("UserInputService")
local localPlayer = game:GetService("Players").LocalPlayer -- Dont forgot to use GetService

local oldPower
local humanoid
local character
local JumpAnimation -- Put it out of the onJumpRequest function

local canDoubleJump = false
local hasDoubleJumped = false
local TIME_BETWEEN_JUMPS = 0.1 -- The time before you can do another jump
local DOUBLE_JUMP_POWER_MULTIPLIER = 1 -- The amount of times you can jump in the air 

function onJumpRequest()
	if not character or not humanoid or not character:IsDescendantOf(workspace) or humanoid:GetState() == Enum.HumanoidStateType.Dead then
		return
	end
	
	if canDoubleJump and not hasDoubleJumped then
		hasDoubleJumped = true
		
		if JumpAnimation then
			JumpAnimation:Play()
		end
		
		humanoid.JumpPower = oldPower * DOUBLE_JUMP_POWER_MULTIPLIER
		humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
	end
end

local function characterAdded(newCharacter) -- Put it out of the onJumpRequest function
	character = newCharacter
	humanoid = newCharacter:WaitForChild("Humanoid")
	hasDoubleJumped = false
	canDoubleJump = false
	oldPower = humanoid.JumpPower
	
	-- Load The Animation Here When New Character Is Added
	local plrAnimator = humanoid:FindFirstChildOfClass("Animator")
	JumpAnimation = plrAnimator:LoadAnimation()
	JumpAnimation.Priority = Enum.AnimationPriority.Action
	JumpAnimation:Play()
	
	humanoid.StateChanged:connect(function(old, new)
		if new == Enum.HumanoidStateType.Landed then
			canDoubleJump = false
			hasDoubleJumped = false
			humanoid.JumpPower = oldPower
		elseif new == Enum.HumanoidStateType.Freefall then
			wait(TIME_BETWEEN_JUMPS)
			canDoubleJump = true
		end
	end)
end

if localPlayer.Character then -- Put it out of the onJumpRequest function
	characterAdded(localPlayer.Character)
end

localPlayer.CharacterAdded:Connect(characterAdded) -- Connect need uppercase to the first letter

UserInputService.JumpRequest:Connect(onJumpRequest) -- Connect need uppercase to the first letter

Video result:

[MR_M3WTWO (Mew)]

Thank you for helping me. It worked great!