Read this thread, it has about everything you need to know, don't just skip to the end.
Also check out the War INC forum here, same game engine.
This is the thread Pyroxer was trying to point you to and where we post changes from game updates etc.
WarZ structs/offsets
I posted the LocalPlayer player offset and XOR key for latest game version there yesterday.
EDIT: All players are in ClientGame class ( CGame some call it )