env_embers Garry's Mod Input Off/On Workaround

sv_env_embers_helper.lua

-- This hook is currently set on Serverside, therefore you must place this code under
-- garrysmod/lua/autorun/server/sv_env_embers_helper.lua

-- This code was made because I was too annoyed with the use function that will never show up again if the "use" input was called.

-- A Dirty Workaround was made for env_embers to control "On" and "Off". Can't guarantee if this works on shared realm.
-- It must have "Toggle" (2) spawnflags to be set. otherwise it does nothing.

-- See: https://developer.valvesoftware.com/wiki/Env_embers @ Flags: 2
-- See: https://github.com/ValveSoftware/source-sdk-2013/blob/master/sp/src/game/server/effects.cpp#L1721

-- Uncomment this if you WANT to allow this hook to be ran only in your map
-- if game.GetMap() ~= "gm_mymap" then return end

-- Warning: Input Name are Case Sensitive! However you can use string.lower(inp) to accept Case Insensitiveness.
hook.Add( "AcceptInput", "env_embers_control", function( ent, inp ) -- Activator, Callers and Data are not needed.
	-- If so, if you want to specify the activator for Player or Entity, use Player(#) or Entity(1,...) instead, or it can be any entity tbh doesn't matter.

	if ( ent:GetClass() == "env_embers" ) and ent:HasSpawnFlags(2) then --bitsSF_EMBERS_TOGGLE, 2
		
		-- As default, we'll use Worldspawn activator instead (Required). Because env_embers does not belong to anyone.
		local ActivatorUSEr = Entity(0)
		
		-- has parent? we'll use parent entity instead.
		-- Does not matter if the entity is player or not, but our +USE simulation will always use type "USE_SET" anyway.
		local p = ent:GetParent()
		if (p) and p ~= nil and IsValid( p ) then ActivatorUSEr = p end
		
		if inp == "TurnOff" then --OR: if string.lower(inp) == "turnoff" then
			-- Simulate the "+USE" behaviour, as mentioned on https://wiki.facepunch.com/gmod/Entity:Use(function)
			-- Caller is always NULL. Or you could use ActivatorUSEr for that. It's optional to you to change this to any Player or any Trigger Entities.
			ent:Use( ActivatorUSEr, NULL, USE_SET, 0 ) 
		elseif inp == "TurnOn" then ----OR: if string.lower(inp) == "turnon" then
			ent:Use( ActivatorUSEr, NULL, USE_SET, 1 ) 
		end 
	end 

end )

-- Then if you create a map, Make an Input something like this:
-- trigger_once -> OnTrigger -> env_ember -> TurnOff / TurnOn

local function TestEmbers( ply, cmd, tArg )
    local val = tArg[1]
	
	if (val) and val ~= nil and isnumber(val) then
		
		for _,emb in pairs(ents.FindByClass('env_embers')) do
			if val == 1 then
				emb:Fire("TurnOn","",0)
			elseif val == 0 then
				emb:Fire("TurnOff","",0)
			end
		end
		
	end
	
end
concommand.Add( 'ember_state_test', TestEmbers )
-- Open up console by typing `ember_state_test 1` or `ember_state_test 0`.