When creating a component there are a number of methods you can override and implement.
Note that for the component be enabled, its GameObject and all of their ancestors need to be enabled too. The GameObject will be considered disabled if one of its ancestor GameObjects is not enabled.
This is called after deserialization and is meant for a place for the component to "load". When loading a scene, the loading screen will stay open and the game won't start until all components OnLoad tasks are complete.
If your component is doing something special, such as generating a procedural level, you can override this on your component to do this in the loadscreen.
protected override async Task OnLoad()
{
LoadingScreen.Title = "Loading Something..";
await Task.DelayRealtimeSeconds( 1.0f );
}
Internally this is where the Map component downloads and loads the map.
Called whenever a property is changed in the editor, and after deserialization.
A good place to enforce property limits etc.
Called once when the component is created, but only if our parent GameObject is enabled. This is called after deserialization and loading.
Called when the component is enabled for the first time. Should always get called before the first OnFixedUpdate.
Called when the component is enabled.
Called every frame
==This method is not called on dedicated servers.==
Called every frame, right before rendering is about to take place.
This is called after animation bones have been calculated, so it usually a good place to do things that count on that.
Called every fixed timestep.
In general, it's wise to use a fixed update for things like player movement (the built in Character Controller does this). This reduces the amount of traces a client is doing every frame, and if your client is too performant, the move deltas per frame can be so small that they create problems.
Called when the component is disabled.
Called when the component is destroyed.