compsci_godot_albert/_subsections/sec03/lesson-09.org
2025-07-17 01:33:06 +03:00

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#+title: Section 03 - Lesson 09, 10 | Export annotation, Moving the Paddle
#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../_share/media/css/godot.css" />
* Links
- [[../../toc.org][TOC - Godot Notes]]
- [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45070473?start=15#announcements][S03:L18.09 - Export annotation]]
- [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45070475#announcements][S03:L20:10 - Moving the Paddle]]
* Notes
** Export Annotation
annotation allows you to add property to the inspector on a node
*** format
#+BEGIN_SRC godot
@export var VARIABLE_NAME: TYPE = VALUE
#+END_SRC
this allows you to reference the property directly within the script attached to the node
** Setting up an Input System
*** add inputs
- Menu->Project->Project Settings-> [Input Map]
- click on "show built-in actions"
#+ATTR_HTML: :width 600px
[[file:../../_share/media/img/albert/S03_L10_EX01.png]]
- create an action
- type in the name of the action in Add New Action
- click +Add
#+ATTR_HTML: :width 600px
[[file:../../_share/media/img/albert/S03_L10_EX02.png]]
- assign a key
- select the action
- click the '+' button to the right
- type or select the appropriate key
#+ATTR_HTML: :width 300px
[[file:../../_share/media/img/albert/S03_L10_EX03.png]]
*** detecting the input
- we use these:
- Input.is_action_just_pressed
- Input.is_action_just_released
- Input.is_action_pressed
- just_pressed detects only the initial press of the button. a lot of times you hit the button and the computer will detect it multiple times.
- so make sure you DO NOT use just_pressed, use action_pressed!
** get axis
instead of using if statements, you can use Input.get_axis
this takes two actions, and determines if they are both pressed at the same time, or if only 1 is pressed
Input.get_axis("left", "right") will return a value of -1, 0, 1