[SickAttack]

Sc0pion, we aren't going to create all the code for you, we're just going to give you options/solutions. You'll have to make it work with the features you have in your script.

You could either create a new list item which saves in the player's user file (Ex: aUserInfo[playerid][user_houses]), and check if they own 3 houses and prevent them from buying another one, or you could loop through the houses and preform some checks:

pawn Код:

stock IsPlayerAllowedToBuyHouse(playerid)
{
    new count, name[MAX_PLAYER_NAME], bool:state = false;
    GetPlayerName(playerid, name, MAX_PLAYER_NAME);
    for(new i = 0; i < MAX_HOUSES; i ++)
    {
        if(strcmp(hInfo[i][Owner], name, true) == 0) count ++;
        if(count == 3) 
        {
            state = true;
            break;
        }
    }

    if(state == true) return false;
    return true;
}

To prevent a player from buying another house if they already own 3 (implying you're using the code above):

pawn Код:

if(!IsPlayerAllowedToBuyHouse(playerid)) return SendClientMessage(playerid, -1, "You can't purchase another house, sell one first!");

However, I would recommend the first option, but it's up to you!