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Mention that signals are first-class types since Godot 4.0 in Using signals

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(cherry picked from commit d23fe7bd8e)
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Hugo Locurcio
2024-07-03 17:41:25 +02:00
committed by Max Hilbrunner
parent bddca676fd
commit 52b408e4d3
1 changed files with 14 additions and 8 deletions
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22
getting_started/step_by_step/signals.rst
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@@ -25,9 +25,17 @@ For example, you might have a life bar on the screen that represents the
player's health. When the player takes damage or uses a healing potion, you want
the bar to reflect the change. To do so, in Godot, you would use signals.
.. note:: As mentioned in the introduction, signals are Godot's version of the
observer pattern. You can learn more about it here:
https://gameprogrammingpatterns.com/observer.html
Like methods (:ref:`class_callable`), signals are a first-class type since Godot
4.0. This means you can pass them around as method arguments directly without
having to pass them as strings, which allows for better autocompletion and is
less error-prone. See the :ref:`class_signal` class reference for a list of
what you can do with the Signal type directly.
.. seealso::
As mentioned in the introduction, signals are Godot's version of the
observer pattern. You can learn more about it in
`Game Programming Patterns <https://gameprogrammingpatterns.com/observer.html>`__.
We will now use a signal to make our Godot icon from the previous lesson
(:ref:`doc_scripting_player_input`) move and stop by pressing a button.
@@ -43,8 +51,6 @@ We will now use a signal to make our Godot icon from the previous lesson
camelCase (See :ref:`doc_c_sharp_styleguide`). Be careful to type
the method names precisely when connecting signals.
.. Example
Scene setup
-----------
@@ -139,10 +145,10 @@ methods "_on_node_name_signal_name". Here, it'll be "_on_button_pressed".
toggle the mode in the window's bottom-right by clicking the Advanced
button.
.. note::
.. note::
If you are using an external editor (such as VS Code) this
automatic code generation might not work. In this case you need to to connect
If you are using an external editor (such as VS Code) this
automatic code generation might not work. In this case you need to to connect
the signal via code as explained in the next section.
Click the Connect button to complete the signal connection and jump to the