/**

  * vim: set ts=4 :

  * =============================================================================

  * SourceMod Random Map Cycle Plugin

  * Randomly picks a map from the mapcycle.

  *

  * SourceMod (C)2004-2008 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 = "RandomCycle",

 	author = "AlliedModders LLC",

 	description = "Randomly chooses the next map.",

 	version = SOURCEMOD_VERSION,

 	url = "http://www.sourcemod.net/"

 };

 new Handle:g_Cvar_Nextmap = INVALID_HANDLE;

 new Handle:g_Cvar_ExcludeMaps = INVALID_HANDLE;

 new Handle:g_MapList = INVALID_HANDLE;

 new Handle:g_OldMapList = INVALID_HANDLE;

 new g_mapListSerial = -1;

 public OnPluginStart()

 {

 	new arraySize = ByteCountToCells(33);	

 	g_MapList = CreateArray(arraySize);

 	g_OldMapList = CreateArray(arraySize);

 	g_Cvar_ExcludeMaps = CreateConVar("sm_randomcycle_exclude", "5", "Specifies how many past maps to exclude from the vote.", _, true, 0.0);

 	AutoExecConfig(true, "randomcycle");

 }

 public OnConfigsExecuted()

 {

 	g_Cvar_Nextmap = FindConVar("sm_nextmap");

 	if (g_Cvar_Nextmap == INVALID_HANDLE)

 	{

 		LogError("FATAL: Cannot find sm_nextmap cvar. RandomCycle not loaded.");

 		SetFailState("sm_nextmap not found");

 	}

 	if (ReadMapList(g_MapList, 

 					g_mapListSerial, 

 					"randomcycle", 

 					MAPLIST_FLAG_CLEARARRAY|MAPLIST_FLAG_MAPSFOLDER)

 		== INVALID_HANDLE)

 	{

 		if (g_mapListSerial == -1)

 		{

 			LogError("Unable to create a valid map list.");

 		}

 	}

 	CreateTimer(5.0, Timer_RandomizeNextmap); // Small delay to give Nextmap time to complete OnMapStart()

 }

 public Action:Timer_RandomizeNextmap(Handle:timer)

 {

 	decl String:map[32];

 	new bool:oldMaps = false;

 	if (GetConVarInt(g_Cvar_ExcludeMaps) && GetArraySize(g_MapList) > GetConVarInt(g_Cvar_ExcludeMaps))

 	{

 		oldMaps = true;

 	}

 	new b = GetRandomInt(0, GetArraySize(g_MapList) - 1);

 	GetArrayString(g_MapList, b, map, sizeof(map));

 	while (oldMaps && FindStringInArray(g_OldMapList, map) != -1)

 	{

 		b = GetRandomInt(0, GetArraySize(g_MapList) - 1);

 		GetArrayString(g_MapList, b, map, sizeof(map));

 	}

 	SetConVarString(g_Cvar_Nextmap, map);

 	PushArrayString(g_OldMapList, map);

 	if (GetArraySize(g_OldMapList) > GetConVarInt(g_Cvar_ExcludeMaps))

 	{

 		RemoveFromArray(g_OldMapList, 0);

 	}

 	LogMessage("RandomCycle has chosen %s for the nextmap.", map);	

 	return Plugin_Stop;

 }