Script that works in live mode

Hello, I develop scripts in javascripts for my works on Illustrator and I was wondering if it was possible to make scripts that draw at the same time as the user. For example, if you make a line, the program draws another one at the same time according to certain parameters. My goal would be to develop a tool similar to the integrated pattern creation tool but with more options (symetric tiles, kaleidoscope, ..etc..)
Currently I use the transform effect tool to get the desired result but I would be interested to program a more adapted script ^^
Thanks for your help!