PM System Made by Superhot

/* Private Message Filterscript by Ponii
Feel free to edit the script, but please don't remove the credits*/

#include <a_samp>
#include <sscanf2>
#include <zCmd>

#define green 0x33FF33AA
#define red 0xFF0000AA
#define yellow 0xFFFF00AA
#define cblue					"{0087FF}"
#define cwhite 					"{FFFFFF}"
new DND[MAX_PLAYERS];
new LastPm[MAX_PLAYERS];

#if defined FILTERSCRIPT

public OnFilterScriptInit()
{
	print("\n--------------------------------------");
	print(" Private Message Filterscript by Superhot");
	print("--------------------------------------\n");
	return 1;
}

#else

main()
{
	print("\n----------------------------------");
	print(" Private Message Filterscript by Superhot");
	print("----------------------------------\n");
}

#endif

public OnPlayerConnect(playerid)
{
    DND[playerid] = 0;
    return 1;
}

CMD:dnd(playerid, params[])
{
   if(DND[playerid] == 0)
   {
	   DND[playerid] = 1;
	   SendClientMessage(playerid, green,"DND mode has been enabled.");
   }
   else if(DND[playerid] == 1)
   {
	   DND[playerid] = 0;
	   SendClientMessage(playerid, red,"DND mode has been disabled.");
   }
   return 1;
}
stock PlayerName(playerid)
{
        new pName[MAX_PLAYER_NAME];
        GetPlayerName(playerid, pName, sizeof(pName));
        return pName;
}
CMD:pm(playerid, params[])
{
   new str[128], str2[128], id;
   if(sscanf(params,"ds[128]", id, str2)) return SendClientMessage(playerid, red,"USAGE: /pm [id] [message]");
   if(IsPlayerConnected(id))
   {
	   if(id != playerid)
	   {
		   if(DND[id] == 0)
		   {
		   		format(str, sizeof(str),"PM to %s: %s", PlayerName(id), str2);
		   		SendClientMessage(playerid, yellow, str);
		   		format(str, sizeof(str),"PM from %s: %s", PlayerName(playerid), str2);
		   		SendClientMessage(id, yellow, str);
		   		SendClientMessage(id, -1,"Use "cblue"/reply [message] "cwhite"to reply to this PM, If you want to block incoming PM's use "cblue"/dnd");
				PlayerPlaySound(id,1057,0.0,0.0,0.0);
		   		LastPm[id] = playerid;
		   }
		   else return SendClientMessage(playerid, red,"PM failed. That player is in do not disturb mode!");
	   }
	   else return SendClientMessage(playerid, red,"You cannot PM yourself!");
   }
   else return SendClientMessage(playerid, red,"Player is not connected");
   return 1;
}
CMD:reply(playerid, params[])
{
   new str[128], str2[128], adminstr[128];
   if(sscanf(params,"s[128]", str2)) return SendClientMessage(playerid, red,"USAGE: /reply [message]");
   new id = LastPm[playerid];
   if(IsPlayerConnected(id))
   {
	   if(DND[id] == 0)
	   {
            format(str, sizeof(str),"PM to %s: %s", PlayerName(id), str2);
	   		SendClientMessage(playerid, yellow, str);
	   		format(str, sizeof(str),"PM from %s: %s", PlayerName(playerid), str2);
	   		SendClientMessage(id, yellow, str);
	   		SendClientMessage(id, -1,"Use "cblue"/reply [message] "cwhite"to reply to this PM, If you want to block incoming PM's use "cblue"/dnd");
			PlayerPlaySound(id,1057,0.0,0.0,0.0);
	   		format(adminstr, sizeof(adminstr),"PM from %s[%d] to %s[%d]:%s", PlayerName(playerid), playerid, PlayerName(id), id, str2);
	   		LastPm[LastPm[playerid]] = playerid;
	   }
	   else return SendClientMessage(playerid, red,"That player is in do not disturb mode!");
   }
   else return SendClientMessage(playerid, red,"Player is not connected");
   return 1;
}