forward ProxDetector( Float:radi, playerid, string[ ], col1, col2, col3, col4, col5 );
public ProxDetector( Float:radi, playerid, string[ ], col1, col2, col3, col4, col5 )
{
    if ( IsPlayerConnected( playerid ) )
    {
        new Float:posx, Float:posy, Float:posz;
        new Float:oldposx, Float:oldposy, Float:oldposz;
        new Float:tempposx, Float:tempposy, Float:tempposz;
        GetPlayerPos( playerid, oldposx, oldposy, oldposz ) ;
        for ( new i = 0; i < MAX_PLAYERS; i++ )
        {
            if ( IsPlayerConnected(i) && (GetPlayerVirtualWorld( playerid ) == GetPlayerVirtualWorld(i) ))
            {
                GetPlayerPos(i, posx, posy, posz ) ;
                tempposx = ( oldposx -posx ) ;
                tempposy = ( oldposy -posy ) ;
                tempposz = ( oldposz -posz ) ;
                if ( ((tempposx < radi/16) && (tempposx > -radi/16) ) && ((tempposy < radi/16) && (tempposy > -radi/16) ) && ((tempposz < radi/16) && (tempposz > -radi/16) ))
                {
                    SendClientMessage(i, col1, string ) ;
                }
                else if ( ((tempposx < radi/8) && (tempposx > -radi/8) ) && ((tempposy < radi/8) && (tempposy > -radi/8) ) && ((tempposz < radi/8) && (tempposz > -radi/8) ))
                {
                    SendClientMessage(i, col2, string ) ;
                }
                else if ( ((tempposx < radi/4) && (tempposx > -radi/4) ) && ((tempposy < radi/4) && (tempposy > -radi/4) ) && ((tempposz < radi/4) && (tempposz > -radi/4) ))
                {
                    SendClientMessage(i, col3, string ) ;
                }
                else if ( ((tempposx < radi/2) && (tempposx > -radi/2) ) && ((tempposy < radi/2) && (tempposy > -radi/2) ) && ((tempposz < radi/2) && (tempposz > -radi/2) ))
                {
                    SendClientMessage(i, col4, string ) ;
                }
                else if ( ((tempposx < radi) && (tempposx > -radi) ) && ((tempposy < radi) && (tempposy > -radi) ) && ((tempposz < radi) && (tempposz > -radi) ))
                {
                    SendClientMessage(i, col5, string ) ;
                }
            }
            else
            {
                SendClientMessage(i, col1, string ) ;
            }
        }
    }
    return 1;
}