Spectator System (Client)

local Holder = script.Parent:WaitForChild("Frame")
local SpectatingText = Holder.Frame.PlayerName
local RestartText = Holder.Restart
local Next = Holder.Next
local Previous = Holder.Previous

local BossFrame = script.Parent.Parent:WaitForChild("BossBars")

local Players = game:GetService("Players")
local Player = Players.LocalPlayer

local Camera = workspace.CurrentCamera

local IsDead = false

local PlayerList = {}

Holder.Visible = false

local function GetHumFromPlayer(plr: Player)
    local plrchar = plr.Character or plr.CharacterAdded:Wait()

    local h = plrchar:FindFirstChildOfClass('Humanoid') or plrchar:WaitForChild("Humanoid")

    return h
end

for _, plr in Players:GetPlayers() do
    if plr.Character then
        if plr.Character:FindFirstChildOfClass("Humanoid") then
            table.insert(PlayerList, plr)
        end
    end
end

Players.PlayerAdded:Connect(function(plr)
    GetHumFromPlayer(plr)

    table.insert(PlayerList, plr)
end)

Players.PlayerRemoving:Connect(function(plr)
    table.remove(PlayerList, table.find(PlayerList, plr))
end)

local function RestartChar(Char)
    print("YES")
    Holder.Visible = false
    BossFrame.Enabled = true
    Camera.CameraType = Enum.CameraType.Custom

    local Hum: Humanoid = Char:FindFirstChildOfClass("Humanoid") or Char:WaitForChild("Humanoid")

    Camera.CameraSubject = Hum
    IsDead = false

    Hum.Died:Once(function()
        if workspace.Values.GameActive.Value == false then return end
        Holder.Visible = true
        IsDead = true

        Camera.CameraType = Enum.CameraType.Watch

        SpectatingText.Text = Player.DisplayName
        BossFrame.Enabled = false

        for i = 25, 0, -1 do
            task.wait(1)
            RestartText.Text = "You respawn in: " .. i
        end
    end)
end

Player.CharacterAdded:Connect(function(Char)
    RestartChar(Char)
end)

Next.MouseButton1Click:Connect(function()
    if not IsDead then return end

    local Index = table.find(PlayerList, Player)

    Index += 1

    if Index > #PlayerList then
        Index = 1
    end

    local plr = PlayerList[Index]

    print(Index, PlayerList)

    SpectatingText.Text = plr.DisplayName
    Camera.CameraSubject = GetHumFromPlayer(plr)
end)

Previous.MouseButton1Click:Connect(function()
    if not IsDead then return end

    local Index = table.find(PlayerList, Player)

    Index -= 1

    if Index < 1 then
        Index = #PlayerList
    end

    local plr = PlayerList[Index]

    SpectatingText.Text = plr.DisplayName
    Camera.CameraSubject = GetHumFromPlayer(plr)
end)

if Player.Character then
    RestartChar(Player.Character)
end