Simple AFK System [0.6]

/* Simple AFK System by DeWilX */

#define FILTERSCRIPT

#include <a_samp>

#define COLOR_YELLOW 0xFFFF00AA
#define COLOR_RED 0xFF0000FF
#define ms 60000
#define afktime 1 // AFK time in minutes
#define AutoAFKTimer 1 // Enable Auto AFK? 1 = On 0 = Off
#define AutoBackOnButtonPress 1 // Enable Auto Back on "Move Forward" key press? 1 = On 0 = Off

forward public PlayerMoveTimer(playerid);
new gPlayers[MAX_PLAYERS][MAX_PLAYER_NAME+1];
new hp = 9999999;
new Float:phealth;
new IsPlayerAfk[MAX_PLAYERS];
new i=0;
new autoafk=ms*afktime;
new AFKtime=AutoAFKTimer;
new AutoBack=AutoBackOnButtonPress;

public OnFilterScriptInit()
{
    print("\n--------------------------------------");
    print(" DeWilX's Simple AFK System -- Loaded");
    print("--------------------------------------\n");
    return 1;
}

public OnPlayerConnect(playerid)
{
    if (AFKtime == 1)
    {
    SetTimerEx("PlayerMoveTimer", autoafk/2, true, "i", playerid);
    }
    IsPlayerAfk[playerid] = 0;
    return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
    IsPlayerAfk[playerid] = 0;
    return 1;
}

public OnPlayerText(playerid, text[])
{
    if(IsPlayerAfk[playerid] == 1)
        {
        SendClientMessage(playerid, COLOR_RED, "ERROR : You can not use chat when you're AFK. Use /back to be back!");
        return 0;
        }
    return 1;
}

public OnPlayerCommandText(playerid, cmdtext[])
{
if (strcmp("/afk", cmdtext, true, 10) == 0)
{
    new string[33];
    if (IsPlayerAfk[playerid] == 0) {
    GetPlayerName(playerid,gPlayers[playerid],MAX_PLAYER_NAME);
    GetPlayerHealth(playerid,phealth);
    SetPlayerHealth(playerid,hp);
    TogglePlayerControllable(playerid, 0);
    format(string,sizeof(string),"***Player [ %s ] is afk!",gPlayers[playerid]);
    SendClientMessageToAll(COLOR_RED,string);
    IsPlayerAfk[playerid] = 1;
    return true;
    }
    if (IsPlayerAfk[playerid] == 1) {
    SendClientMessage(playerid, COLOR_RED, "ERROR : You are alredy AFK! Use /back to be back!");
    }
    return true;
}
if (strcmp("/back", cmdtext, true, 10) == 0)
{
    new string[33];
    if (IsPlayerAfk[playerid] == 1) {
    TogglePlayerControllable(playerid, 1);
    SetPlayerHealth(playerid,phealth);
    format(string,sizeof(string),"<<< [ %s ] is back! >>>",gPlayers[playerid]);
    SendClientMessageToAll(COLOR_YELLOW,string);
    IsPlayerAfk[playerid] = 0;
    return true;
    }
    if (IsPlayerAfk[playerid] == 0) {
    SendClientMessage(playerid, COLOR_RED, "ERROR : You arent AFK! Use /afk to be AFK!");
    }
    return true;
}
return 1;
}
public PlayerMoveTimer(playerid)
{
    new string[33];
    if (IsPlayerAfk[playerid] == 0) {
    i++;
    }
    if ((IsPlayerAfk[playerid] == 0) && (i == 2)) {
        GetPlayerName(playerid,gPlayers[playerid],MAX_PLAYER_NAME);
        GetPlayerHealth(playerid,phealth);
        SetPlayerHealth(playerid,hp);
        TogglePlayerControllable(playerid, 0);
        format(string,sizeof(string),"Player [ %s ] is afk!",gPlayers[playerid]);
        SendClientMessageToAll(COLOR_RED,string);
        IsPlayerAfk[playerid] = 1;
        return true;
    }
    return 1;
}
public OnPlayerUpdate(playerid)
{
    if (IsPlayerAfk[playerid] == 0) {
    i=0;
    }
    new Keys,ud,lr;
    new string[33];
    GetPlayerKeys(playerid,Keys,ud,lr);

    if((ud == KEY_UP) && (AutoBack == 1))
    {
    if (IsPlayerAfk[playerid] == 1) {
    TogglePlayerControllable(playerid, 1);
    SetPlayerHealth(playerid,phealth);
    format(string,sizeof(string),"<<< [ %s ] is back! >>>",gPlayers[playerid]);
    SendClientMessageToAll(COLOR_YELLOW,string);
    IsPlayerAfk[playerid] = 0;
    return true;
    }
    }
    return 1;
}