How would I prevent players jumping on water

Help and Feedback Scripting Support
#1

In my game there is a swimmable part which simulates water physics. My problem is that players can simply spam jump on the surface of the water and never actually start swimming.
see video below:

here is the main script in which handles the player swimming.

local runService = game:GetService("RunService")
local replicatedStorage = game:GetService("ReplicatedStorage")
local moduleScripts = replicatedStorage:WaitForChild("moduleScripts")

local tweenService = game:GetService("TweenService")

local particles = replicatedStorage:WaitForChild("particles")
local smoke = particles:WaitForChild("smoke")

local players = game:GetService("Players")
local _player = players.LocalPlayer
local equippedTool = _player:WaitForChild("tempValues"):WaitForChild("equippedItem")

local walkSpeed = 20
local sprintSpeed = walkSpeed * 1.5
local fishingWalkSpeed = 5

local _camera = workspace.CurrentCamera

local _userInput = game:GetService("UserInputService")

function _debounce(func)
	local isRunning = false
	return function()
		if not isRunning then
			isRunning = true

			func()
			wait(0.5)
			isRunning = false
		end
	end
end

local Info = TweenInfo.new(
	0.3, -- Length(seconds)
	Enum.EasingStyle.Sine, -- Easing Style
	Enum.EasingDirection.InOut -- Easing Direction
)

local sprintProperties = { FieldOfView = 75 }
local cameraSprintTween = tweenService:Create(game.Workspace.CurrentCamera, Info, sprintProperties)

local walkProperties = { FieldOfView = 70 }
local cameraWalkTween = tweenService:Create(game.Workspace.CurrentCamera, Info, walkProperties)




local character = script.Parent
local newParticle = smoke:Clone()
newParticle.Parent = character:WaitForChild("LeftFoot")
local newParticle2 = smoke:Clone()
newParticle2.Parent = character:WaitForChild("RightFoot")
local humanoid = character:WaitForChild("Humanoid")



humanoid.Running:Connect(function(speed: number?)
	local connection: RBXScriptConnection?

	if connection then
		connection:Disconnect()
	end

	if speed >= 0 and humanoid.WalkSpeed ~= 5 then
		task.wait(2)

		connection = runService.RenderStepped:Connect(function()
			if not character:FindFirstChild("LeftFoot") then
				connection:Disconnect()

				return
			end
			if not string.match(equippedTool.Value,"Fishing Rod") then
				if humanoid.MoveDirection.Magnitude > 0 then
					local walkspeedTween = tweenService:Create(humanoid,Info,{WalkSpeed = sprintSpeed})
					walkspeedTween:Play()

					cameraSprintTween:Play()

					if humanoid.FloorMaterial == Enum.Material.Air then
						character.LeftFoot.smoke.Enabled = false
						character.RightFoot.smoke.Enabled = false
					else
						character.LeftFoot.smoke.Enabled = true
						character.RightFoot.smoke.Enabled = true
					end
				else
					cameraWalkTween:Play()
					local walkspeedTween = tweenService:Create(humanoid,Info,{WalkSpeed = walkSpeed})
					walkspeedTween:Play()

					character.LeftFoot.smoke.Enabled = false
					character.RightFoot.smoke.Enabled = false
					connection:Disconnect()
				end
			end

		end)
	end
end)

The way in which going about detecting when the player is jumping on the part is when “isLowerIn” is true. The only thing im struggling with is how do I use this to then stop the player jumping whilst also allowing them to still jump out of the water too.

#2

If I remember correctly, there’s a Jumping state you can toggle off and on in the humanoid which allows the player to jump or not. You can enable or disable it with Humanoid:SetStateEnabled(...)

Enable it if the player’s leaving the water and disable when inside.

#3

Add a function that toggles JumpPower on and off while isLowerIn is true.

Add a small delay between toggles.