> For the complete documentation index, see [llms.txt](https://alexs-organization-34.gitbook.io/rednodeeditor/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alexs-organization-34.gitbook.io/rednodeeditor/usage/base-nodes.md). # Base nodes When first opening the program or creating a new project you will be presented with three red colored nodes, which I called `base nodes`. Those are: * *OnSdkInitialized* * *OnWorldUpdate* * *OnGameStart*

Realistically if it's the first time you would only need the last two, so you can delete `OnSdkInitialized` and always re-add it later. *** ## OnSdkInitialized This node is almost always used to setup things which require to be executed only one time like: * Creation of an UI * Registering of sound files * Initializing variables

*** ## OnWorldUpdate All the nodes attached to `OnWorldUpdate` will be executed continuosly while playing in the world. Nodes listening to inputs like `GetKeyDown` or where you want them to continuosly be called should be put in here.

*** ## OnGameStart All the nodes attached to `OnGameStart` will be executed once at about half of the loading screen (when the player instance is created). If you happen to switch savegame or reload the same save without closing the game, the node will be called again, executing each attached node.

*** ## Additional base nodes Apart from the three starting ones, there are other base nodes which can be added to the graph. Those are: ### OnInitializeMod Currently doesn't serve any purpose. It's normally used to create the config file for the mods (.cfg), which isn't currently supported in the editor. It's also the first base node to get executed, so it could be used to initialize variables if these are needed in OnSdkInitialized, which is the next base node to get executed.

*** ### OnUpdate This works exactly the same as [#onworldupdate](#onworldupdate "mention")with the only difference that it always gets executed, independently if you are in the game, in the main menu, etc.

*** ### OnFixedUpdate This node is mainly used for physics based calculations, like moving objects around using rigidbodies. Using it instead of [#onupdate](#onupdate "mention")can prevent unwanted behaviors like laggy movement when working with physics.