Regarding MTA not using SCM

[World Championship]

I've read many times MTA won't support because MTA doesn't use SCM, I don't get it...

What is SCM and why isn't MTA using it?

Thanks!

[DiSaMe]

SCM are GTA scripts which the game uses for missions, shops, etc. They are in main.scm and script.img files. CLEO mods are SCM scripts too. MTA doesn't use them because they're not synced and everything can be scripted with Lua and MTA functions. In contrast, SA-MP uses SCM scripts. Because of that, shops, casinos and vending machines aren't controlled by server. Also, CLEO mods can be used for cheating.

[Towncivilian]

That explains it pretty well.

Previous versions of MTA for GTA3 and VC use SCM extensively. It's difficult to support and code. SCM is also completely client-side. I believe MTASA hooks functions directly for use by LUA.