Updated notes regarding code in editor (#109)

src/gdext/index.md

@@ -36,14 +36,9 @@ That said, there are some notable differences:
 
 3. **Always-on**  
 
-   There is no differentiation between "tool" and "normal" scripts anymore; Rust logic runs as soon as the Godot editor launches.
-   gdext will likely add an opt-out mechanism to limit execution to the launched game, as that's usually the intended behavior.
-   Currently, if you want logic to execute only when the game runs, write this code at the beginning of your process functions:
-   ```rust
-   if Engine::singleton().is_editor_hint() {
-      return;
-   }
-   ```
+   There is no differentiation between "tool" and "normal" scripts anymore, as it was the case in GDNative. Rust logic runs as soon as 
+   the Godot editor launches, but gdext explicitly changes this behavior. By default, all virtual callbacks (`ready`, `process` etc.)
+   are not invoked **in editor mode**. This behavior can be configured when implementing the [`ExtensionLibrary`][extension-library-doc] trait.
 
 4. **No recompilation while editor is open**
 
@@ -53,3 +48,4 @@ That said, there are some notable differences:
 
 [features]: https://github.com/godot-rust/gdextension/issues/24
 [issue #66231]: https://github.com/godotengine/godot/issues/66231
+[extension-library-doc]: https://godot-rust.github.io/docs/gdext/master/godot/init/trait.ExtensionLibrary.html#method.editor_run_behavior

src/gdext/intro/hello-world.md

@@ -230,14 +230,16 @@ This is a point where you can compile your code, launch Godot and see the result
 
 ![rotating sprite](https://docs.godotengine.org/en/stable/_images/scripting_first_script_godot_turning_in_place.gif)
 
-> **Launching the Godot application**
-> 
-> While it's possible to open the Godot editor and press the launch button every time you made a change in Rust, this is not the most
-> efficient workflow. Unfortunately there is [a GDExtension limitation][no-reload] that prevents recompilation while the editor is open 
-> (at least on Windows systems -- it tends to work better on Linux and macOS).
-> 
-> However, if you don't need to modify anything in the editor itself, you can launch Godot from the command line or even your IDE.
-> Check out the [command-line tutorial][godot-command-line] for more information.
+```admonish tip
+ **Launching the Godot application**
+ 
+While it's possible to open the Godot editor and press the launch button every time you made a change in Rust, this is not the most
+efficient workflow. Unfortunately there is [a GDExtension limitation][no-reload] that prevents recompilation while the editor is open 
+ (at least on Windows systems -- it tends to work better on Linux and macOS).
+ 
+ However, if you don't need to modify anything in the editor itself, you can launch Godot from the command line or even your IDE.
+ Check out the [command-line tutorial][godot-command-line] for more information.
+```
 
 We now add a translation component to the sprite, following [the upstream tutorial][tutorial-full-script].