[Joe Staff]

I would consider completely re-writing the dialog portion and removing anything the NPC has to do on his own. All he should have to do is follow a recording and pause whenever someone is close enough. I don't see a reason for the NPC to tell the server if someone is able to buy or not, they should just have to be within range of the NPC.

A personal favorite method of Dialog use that I currently use.

pawn Код:

#define DIALOG_NONE 0
#define DIALOG_BUY 1
#define DIALOG_AFFIRM 2

pDialogID[MAX_PLAYERS];
pParameters[MAX_PLAYERS];

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
  switch(pDialogID[playerid])
  {
    case DIALOG_NONE: return 1;
    case DIALOG_BUY:
    {
      if(!response)
      {
        pDialogID[playerid]=DIALOG_NONE;
        return SendClientMessage(playerid,0xFF0000FF,"See you around then.");
      }
      new string[128];
      format(string,sizeof(string),"Purchase %d grenades for $%d?",strval(inputtext),25*strval(inputtext));
      pParameters[playerid]=strval(inputtext);
      pDialogID[playerid]=DIALOG_AFFIRM;
      ShowPlayerDialog(playerid,0,DIALOG_STYLE_MSGBOX,"Purchase Grenades",string,"Accept","Nevermind");
    }
    case DIALOG_AFFIRM:
    {
      if(!response)
      {
        pDialogID[playerid]=DIALOG_BUY;
        ShowPlayerDialog(playerid,0,DIALOG_STYLE_INPUT,"Purchase Grenades","How many?","Purchase","Nevermind");
        return 1;
      }
      new string[128];
      GetPlayerName(playerid,string,sizeof(string));
      format(string,sizeof(string),"Thanks %s.   Purchased %d grenades for $%d",string,pParameters[playerid],25*pParameters[playerid]);
      SendClientMessage(playerid,0xFF0000FF,string);
      GivePlayerMoney(playerid,0-25*pParameters[playerid]);
      GivePlayerWeapon(playerid,16,pParameters[playerid]);
      pDialogID[playerid]=DIALOG_NONE;
    }
  }
  return 0;
}

To activate that you just do

pawn Код:

pDialogID[playerid]=DIALOG_BUY;
ShowPlayerDialog(playerid,0,DIALOG_STYLE_INPUT,"Purchase Grenades","How many?","Purchase","Nevermind");

You don't have to use that, but it should diminish your problem of single patron use.