Algodoo

The scene updates very slowly, and so I wanted to see if I could make the script execute faster by moving it to PostStep. And so I edited the text by removing all of the text formatting characters (such as: \ n) and then I replaced the eval(text) script in PostStep with the cleaned up script from the text property. When I started Algodoo, it did not produce the 3D map, and the screen was blank. Do you know why the script will not work in PostStep, but it does work when eval(text) is used in PostStep?

Where do you learn this kinda stuff?

Xray - Uh sorry I forgot to remove that code into update sorry! , I wanted to make the code work with _local variable called _runOnce, but I saw that it couldn't work so I maked it work as normal in post step.
In your problem - I think you could have maked a mistake , because you didn't set the variable addPlane3D as _local variable thats the problem, in addition, the code spawner is on eval(""+text) too so it couldn't work.
How to fix it if you'll not gonna modify the function - set the variable "addPlane3D" to the _Local variable creator (the text box on the top of the script menu):

_addPlane3D = function code here
Then go to postStep event and type :
(e)=>{_addPlane3D([0,0],app.mousepos,20.0)}

Run simulation.

Jester13 - I learned aall this stuff by myself just trying things you can finally understand why they happens and how they work, you should try it .