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Player: Add warnings for messing with movement checks

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This commit is contained in:
Dylan K. Taylor 2018-02-20 13:50:23 +00:00
parent e7adaef2d2
commit aa11dbb928
1 changed files with 10 additions and 0 deletions
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10
src/pocketmine/Player.php
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@ -1468,6 +1468,16 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
$revert = false;
if(($distanceSquared / ($tickDiff ** 2)) > 100){
/* !!! BEWARE YE WHO ENTER HERE !!!
*
* This is NOT an anti-cheat check. It is a safety check.
* Without it hackers can teleport with freedom on their own and cause lots of undesirable behaviour, like
* freezes, lag spikes and memory exhaustion due to sync chunk loading and collision checks across large distances.
* Not only that, but high-latency players can trigger such behaviour innocently.
*
* If you must tamper with this code, be aware that this can cause very nasty results. Do not waste our time
* asking for help if you suffer the consequences of messing with this.
*/
$this->server->getLogger()->warning($this->getName() . " moved too fast, reverting movement");
$this->server->getLogger()->debug("Old position: " . $this->asVector3() . ", new position: " . $this->newPosition);
$revert = true;