[deather]

You need to specify what targetplayerid is:

Код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
     if ((newkeys & KEY_FIRE) && !(oldkeys & KEY_FIRE))
     {
     for(new targetplayerid; targetplayerid<MAX_PLAYERS; targetplayerid++)
     {
     if(IsPlayerAimingAtPlayer(playerid,targetplayerid) && GetPlayerWeapon(playerid) == 33)
     {
         SetPlayerHealth(targetplayerid,0.0);
     }
     }
     }
     return 1;
}