Making in-game events function

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2

Use promises they have the ability to be cancelled.

Like this tween example:

local function tween(obj, tweenInfo, props)
	return Promise.new(function(resolve, reject, onCancel)
		local tween = TweenService:Create(obj, tweenInfo, props)
			
		-- Register a callback to be called if the Promise is cancelled.
		onCancel(function()
			tween:Cancel()
		end) 
			
		tween.Completed:Connect(resolve)
		tween:Play()
	end)
end

-- Begin tweening immediately
local promise = tween(workspace.Part, TweenInfo.new(2), { Transparency = 0.5 }):andThen(function()
	print("This is never printed.")
end):catch(function()
	print("This is never printed.")
end):finally(function()
	print("But this *is* printed!")
end)
wait(1)
promise:cancel() -- Cancel the Promise, which cancels the tween.

Instead of a tween have it be your event and such.

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