[LadyNyuuu]

Maybe you can improve this. If you knife someone from behind the damage says 0 (zero) and the killed guy gets desynced. I build a fix for that. Just call a respawn on the same position for the player.
Its good if you use:

//Call this after the zero damage event with the knife. I got some problems with calling this directly so i used a small timerdelay and put that in a "public".

Код:

new Float:X,Float:Y,Float:Z,Float:Angle;
GetPlayerPos(playerid,X,Y,Z);
GetPlayerFacingAngle(playerid,Angle);
SetSpawnInfo(playerid, 0, GetPlayerSkin(playerid), X,Y,Z, Angle, 0, 0, 0, 0, 0, 0);
SpawnPlayer(playerid);

The Player will be spawned without weapons, maybe you store them every time he get a new gun and give them back some time after the Spawn.

Maybe you can upgrade that to:
OnPlayerKnifePlayer(playerid,targetid,Float:damage ,bool:instantkill) // Instantkill if it cause a zero damage and begins the desync.
OnPlayerKnifeRespawn(playerid) // called on spawn after the player got fixed against desync.