/**
 * vim: set ts=4 :
 * =============================================================================
 * SourceMod Reserved Slots Plugin
 * Provides basic reserved slots.
 *
 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.
 * =============================================================================
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, version 3.0, as published by the
 * Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * As a special exception, AlliedModders LLC gives you permission to link the
 * code of this program (as well as its derivative works) to "Half-Life 2," the
 * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
 * by the Valve Corporation.  You must obey the GNU General Public License in
 * all respects for all other code used.  Additionally, AlliedModders LLC grants
 * this exception to all derivative works.  AlliedModders LLC defines further
 * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
 * or <http://www.sourcemod.net/license.php>.
 *
 * Version: $Id$
 */

#pragma semicolon 1

#include <sourcemod>

public Plugin:myinfo = 
{
	name = "Reserved Slots",
	author = "AlliedModders LLC",
	description = "Provides basic reserved slots",
	version = SOURCEMOD_VERSION,
	url = "http://www.sourcemod.net/"
};

/* Maximum number of clients that can connect to server */
new g_MaxClients;

/* Handles to convars used by plugin */
new Handle:sm_reserved_slots;
new Handle:sm_hide_slots;
new Handle:sv_visiblemaxplayers;

public OnPluginStart()
{
	LoadTranslations("reservedslots.phrases");
	
	sm_reserved_slots = CreateConVar("sm_reserved_slots", "0", "Number of reserved player slots", 0, true, 0.0);
	sm_hide_slots = CreateConVar("sm_hide_slots", "0", "If set to 1, reserved slots will hidden (subtracted from the max slot count)", 0, true, 0.0, true, 1.0);
	sv_visiblemaxplayers = FindConVar("sv_visiblemaxplayers");
}

public OnMapStart()
{
	g_MaxClients = GetMaxClients();
}

public OnConfigsExecuted()
{
	if (GetConVarBool(sm_hide_slots))
	{
		SetVisibleMaxSlots(GetClientCount(false), g_MaxClients - GetConVarInt(sm_reserved_slots));
	}	
}

public OnClientPostAdminCheck(client)
{
	new reserved = GetConVarInt(sm_reserved_slots);
	
	if (reserved > 0)
	{
		new clients = GetClientCount(false);
		new limit = g_MaxClients - reserved;
		new flags = GetUserFlagBits(client);
		
		if (clients <= limit || IsFakeClient(client) || flags & ADMFLAG_ROOT || flags & ADMFLAG_RESERVATION)
		{
			if (GetConVarBool(sm_hide_slots))
			{
				SetVisibleMaxSlots(clients, limit);
			}
			
			return;
		}

		/* Kick player because there are no public slots left */
		KickClient(client, "%T", "Slot reserved", client);
	}
}

public OnClientDisconnect_Post(client)
{
	if (GetConVarBool(sm_hide_slots))
	{		
		SetVisibleMaxSlots(GetClientCount(false), g_MaxClients - GetConVarInt(sm_reserved_slots));
	}
}

SetVisibleMaxSlots(clients, limit)
{
	new num = clients + 1;
	
	if (clients == g_MaxClients)
	{
		num = g_MaxClients;
	} else if (clients < limit) {
		num = limit;
	}
	
	SetConVarInt(sv_visiblemaxplayers, num);
}