CollectionService Question

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#1

I’m using CollectionService as a performant way to keep track of all current Characters in my game.
When an instance (the character) with a tag gets :Destroy()ed or parented to nil, is the tag removed and wiped, or is it still there, and do I have to use CollectionService:GetInstanceRemovedSignal()?

#2

The tag will be there but the tagged part will not, so if there were 3 parts tagged there is now 2. CollectionService:GetInstanceRemovedSignal() fires when the instance is parented to nil or destroyed.

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#3

So when the character resets and the old character is destroyed and the new one spawns in, the old character’s tag gets removed, correct?

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#4

I don’t know the answer to your question, but I know how you can test it.

local part = Instance.new("Part", workspace)
local collection = game:GetService("CollectionService")

collection:AddTag(part, "Test")
part:Destroy()

print(collection:HasTag(part, "Test"))
--If false, then the tag is automatically removed
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#5

Yes, the old characters tag will be removed.

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#6

Did a quick test using the following:

local part = Instance.new("Part", workspace)
local collection = game:GetService("CollectionService")
collection:GetInstanceRemovedSignal('Test'):Connect(function()

print('instance was removed')
collection:RemoveTag(part, 'Test')
end)

collection:AddTag(part, "Test")

part:Destroy()

print(collection:HasTag(part, "Test"))
--If false, then the tag is automatically removed

Without CollectionService:RemoveTag(), the print will return true and the tag will still be there. In order to fully remove the tag you have to connect it to collection:GetInstanceRemovedSignal and Destroy it.