[ bzflag-Patches-711973 ] More CTF cheat prevention

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Patches item #711973, was opened at 2003-03-29 23:55
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=303248&aid=711973&group_id=3248

Category: None
Group: None
Status: Open
Resolution: None
>Priority: 6
Submitted By: Lars Luthman (larsl)
Assigned to: Nobody/Anonymous (nobody)
Summary: More CTF cheat prevention

Initial Comment:
Some people cheat by signing off and joining again really quick to get 
back to their base if an enemy is there. Since the clients decide where 
to spawn the tanks, fixing this (without adding some kind of 20 
second auto-ban or remembering recent players) requires a client 
change. This patch adds a new message type to the protocol, but it 
works with old clients and old servers without breaking anything. 
 
The message added is a server message called 'MsgSpawnHere' and it 
sends a uint_16 that can have two values: SpawnOnBase or 
SpawnAwayFromBase. This way the server can decide whether or 
not the player can start at the base, but the client still calculates the 
exact position. This message is only sent once when the player is 
connecting, but after 1.7g2 I'd like to move all the spawn position 
calculation code to the server, and send a MsgSpawnHere with the 
calculated position every time a player connects or dies. 
 
This patch doesn't prevent clients without the patch applied from 
cheating. 
 
If you want the old behaviour where tanks start at their bases, you 
can use the new command line option '-startatbase'. If that option is 
given the server will send 'SpawnOnBase' instead. 

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=303248&aid=711973&group_id=3248