Checking if a device is already in an array of devices?

Development Programming & Scripting Verse
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1

I have an array of NPC Spawners. This array has duplicates of the same spawner. I would like to subscribe to the EliminatedEvent event for each spawner only once.

As such, I have created an additional array for spawn devices that I have already tracked.

Currently I have:

var trackedSpawnDevices : []npc_spawner_device = array{}
        for (SpawnDevice : WaveData):
            if (trackedSpawnDevices.Find[SpawnDevice]):
                Print("Already here!")
            else:
                set trackedSpawnDevices += array{SpawnDevice}
                SpawnDevice.EliminatedEvent.Subscribe(OnNPCEliminated)

However, I get an error when I try to find the SpawnDevice in the array with Find:

This function parameter expects a value of type tuple(comparable,comparable), but this argument is an incompatible value of type tuple(npc_spawner_device,npc_spawner_device).

I presume this means that I cannot find a device in an array this way. I then tried to loop through the array manually and check if the current item in the array is the same as the one I am checking, but it gives me a similar error.

Is this possible?

2

Have been tinkering with this over the past week and have still not made any progress. I have attempted further tries at my earlier implementation as well as deduping the array at its creation rather than later on.

Without some form of .Find or .AddUnique, I am at a loss.

I also sought help from the Developer Assistant; however, it keeps offering solutions that either do not appear to exist in Verse or do not work for devices.

3

Hello @mikufromgatlin, currently, Creative Devices are not comparable, so unfortunately, Find won’t work, however, the easiest solution is to create your own <unique> wrapper class, something like:

npc_spawner_unique := class<unique>():
    @editable
    NpcSpawner:npc_spawner_device = npc_spawner_device{}

which you can use to reference your NPC spawners:

    @editable
    NpcSpawnerUnique:npc_spawner_unique = npc_spawner_unique{}

and then Find will work:

        var trackedSpawnDevices : []npc_spawner_unique = array{}
        
        for (SpawnDevice : WaveData):
            if (Test := trackedSpawnDevices.Find[SpawnDevice]):
                Print("Already here!")
            else:
                set trackedSpawnDevices += array{SpawnDevice}
                SpawnDevice.EliminatedEvent.Subscribe(OnNPCEliminated)

Hope this helps!

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