local TOOL_NAME = "boioing"
local NORMAL_JUMP_POWER = 50
local INCREASED_JUMP_POWER = 100

local function hasTool(player)
    local backpack = player:FindFirstChild("Backpack")
    if backpack then
        local tool = backpack:FindFirstChild(TOOL_NAME)
        return tool ~= nil
    end
    return false
end

local function onCharacterAdded(character)
    local humanoid = character:WaitForChild("Humanoid")
    humanoid.JumpPower = hasTool(character.Parent) and INCREASED_JUMP_POWER or NORMAL_JUMP_POWER
end

local function onPlayerAdded(player)
    player.CharacterAdded:Connect(onCharacterAdded)
    if player.Character then
        onCharacterAdded(player.Character)
    end
end

for _, player in ipairs(game.Players:GetPlayers()) do
    onPlayerAdded(player)
end

game.Players.PlayerAdded:Connect(onPlayerAdded)

local function onEquipped(tool)
    local character = tool.Parent
    if character:IsA("Model") and character:FindFirstChild("Humanoid") then
        local humanoid = character.Humanoid
        humanoid.JumpPower = INCREASED_JUMP_POWER
    end
end

local function onUnequipped(tool)
    local character = tool.Parent
    if character:IsA("Model") and character:FindFirstChild("Humanoid") then
        local humanoid = character.Humanoid
        humanoid.JumpPower = hasTool(character.Parent) and INCREASED_JUMP_POWER or NORMAL_JUMP_POWER
    end
end

game.Players.PlayerAdded:Connect(function(player)
    player.CharacterAdded:Connect(function(character)
        local tool = character:FindFirstChild(TOOL_NAME)
        if tool then
            tool.Equipped:Connect(function()
                onEquipped(tool)
            end)
            tool.Unequipped:Connect(function()
                onUnequipped(tool)
            end)
        end
    end)
end)