[Server] How to get the exacly pos where a bomb drops?

[annety]

I want to make a server with a good PvP like CS-GO

For that i need to make good granades: like smoke,flash,molotov

The effect i can manage to do by using textdraws, create explosion, drunk effect...



But there is only a thing i need someone with more expirience to help me:

How to get the exacly position where bombs when players throw?

To create that flashbang,smoke,molotov effect...



How to get it?