Added Godot exportable methods along with the expected signature

[jacobsky]

Added a list of the Godot Virtual methods from Node and Control to the #[export] trait documentation.

closes #672

[Bromeon]

Thank you for the exhaustive list and all the detailed links!

As usual, the structure is very good, the comments concern just some typos/nitpicks 🙂

[jacobsky]

@Bromeon I've gone ahead and fixed up everything that you asked for. Let me know if you think anything else is needed.

[Bromeon]

Instead of this:

I'd format them like this:

That makes it much clearer which parts belong together.

Here's the code, so you don't have to constantly micro-adjust things.

/// This is a list of common Godot virtual functions that are automatically called via [notifications](https://docs.godotengine.org/en/stable/classes/class_object.html#class-object-method-notification):
/// <br><br>
///
/// ```
/// fn _ready(&self, owner: &Node);
/// ```
/// Called when both the node and its children have entered the scene tree.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-ready) for more information._
/// <br><br>
///
/// ```
/// fn _enter_tree(&self, owner: &Node);
/// ```
/// Called when the node enters the scene tree.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-enter-tree) for more information._
/// <br><br>
///
/// ```
/// fn _exit_tree(&self, owner: &Node);
/// ```
/// Called when the node is removed from the scene tree.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-exit-tree) for more information._
/// <br><br>
///
/// ```
/// fn _get_configuration_warning(&self, owner: &Node);
/// ```
/// The string returned from this method is displayed as a warning in the Scene Dock if the script that overrides it is a tool script.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-get-configuration-warning) for more information._
/// <br><br>
///
/// ```
/// fn _process(&mut self, owner: &Node, delta: f64);
/// ```
/// Called during processing step of the main loop.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-process) for more information._
/// <br><br>
///
/// ```
/// fn _physics_process(&self, owner: &Node, delta: f64);
/// ```
/// Called during physics update, with a fixed timestamp.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-physics-process) for more information._
/// <br><br>
///
/// ```
/// fn _input(&self, owner: &Node, event: InputEvent);
/// ```
/// Called when there is an input event.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-input) for more information._
/// <br><br>
///
/// ```
/// fn _unhandled_input(&self, owner: &Node, event: InputEvent);
/// ```
/// Called when an `InputEvent` hasn't been consumed by `_input()` or any GUI.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-unhandled-input) for more information._
/// <br><br>
///
/// ```
/// fn _unhandled_key_input (&self, owner: &Node, event: InputKeyEvent);
/// ```
/// Called when an `InputEventKey` hasn't been consumed by `_input()` or any GUI.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_node.html#class-node-method-unhandled-key-input) for more information._
/// <br><br>
///
/// #### `Control` virtual functions
///
/// This is a list of common Godot virtual functions that are automatically called via [notifications](https://docs.godotengine.org/en/stable/classes/class_object.html#class-object-method-notification).
///
/// ```
/// fn _clips_input(&self, owner: &Control) -> bool;
/// ```
/// Returns whether `_gui_input()` should not be called for children controls outside this control's rectangle.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_control.html#class-control-method-clips-input) for more information._
/// <br><br>
///
/// ```
/// fn _get_minimum_size(&self, owner: &Control) -> Vector2;
/// ```
/// Returns the minimum size for this control.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_control.html#class-control-method-get-minimum-size) for more information._
/// <br><br>
///
/// ```
/// fn _gui_input(&self, owner: &Control, event: InputEvent);
/// ```
/// Use this method to process and accept inputs on UI elements.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_control.html#class-control-method-gui-input) for more information._
/// <br><br>
///
/// ```
/// fn _make_custom_tooltip(&self, owner: &Control, for_text: String) -> Ref<Control>;
/// ```
/// Returns a `Control` node that should be used as a tooltip instead of the default one.  
/// _See [Godot docs](https://docs.godotengine.org/en/stable/classes/class_control.html#class-control-method-make-custom-tooltip) for more information._
/// <br><br>

[jacobsky]

@Bromeon Thank you very much, I've included the changes in my latest push.

[jacobsky]

bors try

[bors]

try

Build failed:

• ci

[jacobsky]

bors try

[bors]

try

Build succeeded:

• ci

[Bromeon]

Let's try with the new workflow 🚀
bors try

[bors]

try

Build succeeded:

• full-ci

[jacobsky]

bors r+

[bors]

Build succeeded:

• full-ci