added signals

_subsections/sec03/lesson-11.org

@@ -7,3 +7,39 @@
 - [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45070477#announcements][S03:L20.11 - Signals]]
 
 * Notes
+** signals
+- messaging system
+- way of communicating between nodes
+
+*** connect basics
+- means of connecting
+  - ide
+  - code
+- the node giving the signal has a list of everyone that connected
+
+*** connecting via ide
+1. select Node panel on leftside, and then select the approrpiate signal
+   -
+        #+ATTR_HTML: :width 600px
+        [[file:../../../_share/media/albert/img/section03/S03_L11_EX01.png]]
+
+2. double click the selected filter
+   - options available:
+     - from signal
+     - connect to script
+     - receiver method
+       - you can also click on "Pick" next to receiver method so that you can choose a different method that already exists
+
+3. click connect and the boilerplate code will appear in the script you had selected in the signal creation pane above in (2)
+
+   - if you look at the node pane on the right and scroll to the signal, you'll see a green indicator showing that you have connected that signal (to something)
+
+     -
+          #+ATTR_HTML: :width 300px
+          [[file:../../../_share/media/albert/img/section03/S03_L11_EX02.png]]
+
+   - similarly, you can see a green icon by the function in the code editor
+
+     -
+          #+ATTR_HTML: :width 600px
+          [[file:../../../_share/media/albert/img/section03/S03_L11_EX03.png]]