quantum/gamemode/engine/lib/sh_station.lua

--    __           _        _______        _      __   
--   / /     /\   | |      |__   __|      | |     \ \  
--  / /     /  \  | |_ __ ___ | | ___  ___| |__    \ \ 
-- < <     / /\ \ | | '_ ` _ \| |/ _ \/ __| '_ \    > >
--  \ \   / ____ \| | | | | | | |  __/ (__| | | |  / / 
--   \_\ /_/    \_\_|_| |_| |_|_|\___|\___|_| |_| /_/  

Quantum.Station = {}

Quantum.Stations = {}

function Quantum.Station.Add( id, tbl )

	local returnTbl = {
		stationid = id,
		name = tbl.name || "Crafting Station", -- name of the station
		model = tbl.model || "models/props_phx/facepunch_barrel.mdl",
		recipes = tbl.recipes 
	}

	Quantum.Stations[ id ] = returnTbl 

	return returnTbl
end

function Quantum.Station.Get( id )
	return Quantum.Stations[id]
end	

function Quantum.Station.GetRecipes( id )
	return Quantum.Stations[id].recipes
end

if SERVER then
	Quantum.Server.Station = {}

	function Quantum.Server.Station.Spawn( stationid, pos, ang ) -- internal function
		local ent = ents.Create( "q_crafting_station" )
		if( IsValid( ent ) ) then
			ent:InitializeStation( stationid, pos, ang )
			ent:Spawn()
		end
	end

	local function floorVectorString( vec )
		return tostring(math.floor( vec.x )) .. ", " .. tostring(math.floor( vec.y )) .. ", " .. tostring(math.floor( vec.z ))
	end
	
	function Quantum.Server.Station.Create( id, tbl )
		local stationTbl = Quantum.Station.Get( id )
	
		if( stationTbl != nil ) then
			Quantum.Server.Station.Spawn( id, tbl.pos, tbl.ang )
		end
	end

	function Quantum.Server.Station.Remove( station )
		if( IsValid( station ) ) then
			station:Remove()	
		end
	end

	function Quantum.Server.Station.RemoveAll()
		for i, station in pairs( ents.FindByClass( "q_crafting_station" ) ) do
			Quantum.Server.Station.Remove( station )
		end
	end

	Quantum.Server.Station.RemoveAll() -- remove all stations on lua refresh

	hook.Add( "KeyRelease", "Quantum_Station_KeyRelease", function( pl, key ) 
		if( pl.isloaded ) then
			if( key == IN_USE ) then
				local ent = pl:GetEyeTraceNoCursor().Entity
				if( ent:GetClass() == "q_crafting_station" ) then
					pl:SetLocalVelocity( Vector( 0, 0, 0 ) ) 
					Quantum.Net.OpenMenu( pl, "crafting", { stationEnt = ent, station = ent.stationid } )
				end
			end
		end
	end)
end