Remove Spawned Items for Players who leave only

Help
1

When spawning an object using World.SpawnAsset.... 1) how does it know which asset is associated with which player if there are multiple players? Is there a check for this and then my real question is 2) how do you remove a spawned asset for a player when they leave the match? and then 3) How do I move the remaining items so they look nice? This one is maybe not as important as I could maybe just spawn a "player left" type asset.

This is to show all players health in a health bar and their name in a static UI location on screen the whole game. I could not find anything like that in community content. I have it working but when a player leaves it can get funky.

Here is my script...

local propBlueProgressBar = script:GetCustomProperty("blueProgressBar")
local propThePlayersName = script:GetCustomProperty("thePlayersName")

local panel = script.parent

function placeHealthBarsOnce()

-- get all the players in the game
local allPlayers = Game.GetPlayers()

for i, player in ipairs(allPlayers) do
    if player == Game.GetLocalPlayer() then
        -- don't show the local player but show the others
        -- UI.PrintToScreen(player.name, Color.GREEN)
    else
        -- spawn the health bar in the panel heirarchy
        playerHealthBar = World.SpawnAsset(propBlueProgressBar, {parent = panel})
        playerNameBar = World.SpawnAsset(propThePlayersName, {parent = panel})
        -- move the health bar down by 50 units... I think
        playerHealthBar.y = i*50
        playerNameBar.y = i*47.5
        -- multiply player hit points so that it is 0.01 - 1 and can set the progress bar 
        playerHealthBar.progress = (player.hitPoints*0.01)
        playerNameBar.text = player.name

        -- the tick function is resetting the progress bar every tick to match up with the player health
        function Tick()               
            for i, player in ipairs(allPlayers) do
                -- multiply player hit points so that it is 0.01 - 1 and can set the progress bar 
                playerHealthBar.progress = (player.hitPoints*0.01)
            end
        end
    end
  end
end

Task.Wait(10)

placeHealthBarsOnce()

I get the following error when player leaves the game....

[BOT_Bot2][2021.01.16-09.30.04]Error running Lua task: [F6F652A1FCAED2CA] Game GetLocalPlayer API Example:30: Attempted to access an object that has been destroyed. Consider using Object.IsValid(myObject) to check for this condition.
[BOT_Bot2][2021.01.16-09.30.04]Tick function has stopped running.  Script: "Game GetLocalPlayer API Example", Asset ID: F6F652A1FCAED2CA

I tried messing with tis Object.isValid but am clearly missing something or doing it incorrectly. I have used some of the code that Slinkous mentions in one the latest VODs where she was making a voting system similar to Among Us. I just grabbed what I needed as a start.

Help appreciated at always! Thanks so much. Also, let me know how I can help you either here or in Discord. I want to give back and help out. I will definitely get this released on Core Content once it is working well.

2

Actually, I think I may have worked it out. I updated the tick with the following:

function Tick()               

                for i, player in ipairs(allPlayers) do

                    -- multiply player hit points so that it is 0.01 - 1 and can set the progress bar 

                    if Object.IsValid(playerHealthBar) then

                        playerHealthBar.progress = (player.hitPoints*0.01)

                    end

                end

            end

Now I just need to figure out how to move the other bars or replace it with a player disconnected message when they have left. I also need to figure out how to reset this or add bars when a new players shows up. My gut is that I should just destroy this at game end and then respawn it for all players at the start of each match. Does that sound like the right approach?