MH 3rd PC Optimized Controlls without a controller

[ShiNoMondai]

First off I am very bad at understanding programming languages, so sorry in advance!
I have a very urgent question about this script, it works well and I had no problems while testing it out on MH 3rdG.

So my question is, if it is possible to inject more lines of code to achieve emulation on the Left Mouse-Button and all the others, too?
I'd like to try and configure it that; LMB = Circle , RMB =Triangle and the Mouse Wheel act as D-Pad/ Arrow Keys = Up/Down

Would be nice if someone can tell me if it is possible and if someone tried to getsomething similar or even has a script.

Thanks.

EDIT:
Nevermind, I somewhat edited your script to please my desires.