diff --git a/shared/functions.lua b/shared/functions.lua
new file mode 100644
index 0000000..76a3910
--- /dev/null
+++ b/shared/functions.lua
@@ -0,0 +1,28 @@
+local startedResources = {}
+local callbacks = {}
+
+AddEventHandler("onResourceStart", function(resourceName)
+    startedResources[resourceName] = true
+    local callback = callbacks[resourceName]
+    if not callback then return end
+    callback(true)
+end)
+
+AddEventHandler("onResourceStop", function(resourceName)
+    startedResources[resourceName] = nil
+    local callback = callbacks[resourceName]
+    if not callback then return end
+    callback(false)
+end)
+
+function NDCore.isResourceStarted(resourceName, cb)
+    local started = GetResourceState(resourceName) == "started"
+    startedResources[resourceName] = started
+
+    if cb then
+        callbacks[resourceName] = cb
+        cb(started)
+    end
+    
+    return started
+end