Let me help out here.... The OP is talking about WoT without actually naming the game.
WoT has buggy spotting systems where you can spot enemies in a 3rd person view even if you shouldn't be able to (imagine a 3m magic periscope of vision that extends over the top of every tank) and results in strange situations where you can see an enemy and can't shoot him because a hill is in the way. It is also buggy as hell in that tanks have a bad habit of vanishing in non cover areas. You also have to be aware in WoT if you hide in a bush you ARE invisible until you shoot. You can remain invisible by 'abusing' some bush mechanics....
Let me hop in here and say no one is going to recreate that madness... rofl. I've played that game so long sometimes I forget how bad and stupid the spotting system is in that game.
This is a modern/future tech game. A scout can laser designate targets with a TAG to make missiles home in more accurately (against a very distant target). Scouts can hit mechs with NARC beacons which do the same thing but do not require constant line of sight (NARC is a fire and forget homing beacon to let your team know where that guy is and lets you shoot long range missiles at him). You have the option to eventually launch recon drones and satelitte sweeps (no one knows how many or how often for either).
Now then you CAN be sneaky.... you can power down a mech and he won't appear unless you are right next to him if he hid well. If a scout buddy tells him when to power up it can be an atlas ambush from 10m! The downside is that he literally can't see anything on his screen.... imagine if you turned your computer off mid fight and did a quick reboot in the middle.
There are also ECM devices which either reduce missile lock functions OR decrease your radar profile (or possibly both.... different games have had different functions).
Edited by Glythe, 25 June 2012 - 07:51 AM.