Wall Climbing System Roblox

--Simple setup:
-- 1) Go to starter player, then starter character scripts
-- 2) create a local script inside of it
-- 3) paste the code underneath into it
-- And you're done!

local wall = nil

local hrp = script.Parent:WaitForChild("HumanoidRootPart")

local anim = script.Parent:WaitForChild("Humanoid"):LoadAnimation(script.Parent:WaitForChild("Animate").climb.ClimbAnim)

local uis = game:GetService("UserInputService")



game:GetService("RunService").Heartbeat:Connect(function()

    local raycastParams = RaycastParams.new()
    raycastParams.FilterDescendantsInstances = {script.Parent}

    local raycastResult = workspace:Raycast(script.Parent.LeftFoot.Position, hrp.CFrame.LookVector * 2.5, raycastParams)

    wall = raycastResult and raycastResult.Instance or nil
    local w = uis:IsKeyDown(Enum.KeyCode.W)
    local s = uis:IsKeyDown(Enum.KeyCode.S)
    local a = uis:IsKeyDown(Enum.KeyCode.A)
    local d = uis:IsKeyDown(Enum.KeyCode.D)


    if wall then -- on the wall
        if w then -- go up
            anim:AdjustSpeed(1)

            hrp.Velocity = Vector3.new(hrp.Velocity.X, 20, hrp.Velocity.Z)
            workspace.Gravity = 0

            if script.Parent.Humanoid:GetState() ~= Enum.HumanoidStateType.Climbing then script.Parent.Humanoid:ChangeState(Enum.HumanoidStateType.Climbing) end
            if not anim.IsPlaying then anim:Play() end
        elseif a then
            anim:AdjustSpeed(1)

            hrp.Velocity = Vector3.new(hrp.Velocity.X, 0, hrp.Velocity.Z)
            workspace.Gravity = 0

            if script.Parent.Humanoid:GetState() ~= Enum.HumanoidStateType.Climbing then script.Parent.Humanoid:ChangeState(Enum.HumanoidStateType.Climbing) end
            if not anim.IsPlaying then anim:Play() end
        elseif s then
            anim:AdjustSpeed(1)

            hrp.Velocity = Vector3.new(hrp.Velocity.X, -20, hrp.Velocity.Z)
            workspace.Gravity = 0

            if script.Parent.Humanoid:GetState() ~= Enum.HumanoidStateType.Climbing then script.Parent.Humanoid:ChangeState(Enum.HumanoidStateType.Climbing) end
            if not anim.IsPlaying then anim:Play() end
        elseif d then
            anim:AdjustSpeed(1)

            hrp.Velocity = Vector3.new(hrp.Velocity.X, 0, hrp.Velocity.Z)
            workspace.Gravity = 0

            if script.Parent.Humanoid:GetState() ~= Enum.HumanoidStateType.Climbing then script.Parent.Humanoid:ChangeState(Enum.HumanoidStateType.Climbing) end
            if not anim.IsPlaying then anim:Play() end

        elseif not w then -- pausing on the wall
            hrp.Velocity = Vector3.new(hrp.Velocity.X, 0, hrp.Velocity.Z)
            anim:AdjustSpeed(0)
        end
    else -- off the wall
        workspace.Gravity = 196.6
        anim:Stop()
    end
end)