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Re:Rockstar condemns Max Payne 3 cheaters to play only again... by icebraining on Wednesday June 13, 2012 @03:24PM (#4107918)
That only prevents impossible actions, like teleporting or such, but that's already not feasible with most games, since the server double-checks those. The hard thing is knowing whether a certain sequence of actions was done by a player or by an All-Knowing cheat doing it for them.
Re:Rockstar condemns Max Payne 3 cheaters to play only again... by Retric on Wednesday June 13, 2012 @06:47PM (#4108871)
Another option is to send false information to a client. So someone using a wall hack might see 7 people on the other side of the door and or players only get shown in their correct location when it's possible for someone to actually interact with them.
Re:Rockstar condemns Max Payne 3 cheaters to play only again... by icebraining on Wednesday June 13, 2012 @07:07PM (#4108955)
You can't really do that in many FPSs nowadays because you can interact with others even without seeing them; for example on Call of Duty 4 (2007), you can shoot and hit people through most opaque walls, and you get feedback from hits. So if the server were to put fake players behind walls or doors and a player just happened to shoot it, the game would provide false feedback.