[Threshold]

pawn Код:

stock Float:GetDistanceBetweenPoints(Float:rx1,Float:ry1,Float:rz1,Float:rx2,Float:ry2,Float:rz2)
{
    return floatadd(floatadd(floatsqroot(floatpower(floatsub(rx1, rx2), 2)), floatsqroot(floatpower(floatsub(ry1, ry2), 2))), floatsqroot(floatpower(floatsub(rz1, rz2), 2)));
}

stock GetClosestPlayer(playerid, Float:limit)
{
    new Float:x1, Float:y1, Float:z1, Float:x2, Float:y2, Float:z2, Float:Dist, id = INVALID_PLAYER_ID;
    GetPlayerPos(playerid,x1,y1,z1);
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(!IsPlayerConnected(i)) continue;
        if(i == playerid) continue;
        GetPlayerPos(i, x2, y2, z2);
        Dist = GetDistanceBetweenPoints(x1, y1, z1, x2, y2, z2);
        if(Dist < limit || id == INVALID_PLAYER_ID)
        {
            limit = Dist;
            id = i;
        }
    }
    return id;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if((newkeys & KEY_LOOK_BEHIND) && !(oldkeys & KEY_LOOK_BEHIND))
    {
        if(IsCop[playerid])
        {
            new target = GetClosestPlayer(playerid,5.0); //The wanted player must be in range of 5.0 from the cop
            if(target != INVALID_PLAYER_ID)
            {
                if(IsWanted[target])
                {
                    //Rest of code...
                }
            }
        }
    }
    return 1;
}