dvander@2168: /**
dvander@2168:  * vim: set ts=4 :
dvander@2168:  * =============================================================================
dvander@2168:  * SourceMod Random Map Cycle Plugin
dvander@2168:  * Randomly picks a map from the mapcycle.
dvander@2168:  *
dvander@2168:  * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.
dvander@2168:  * =============================================================================
dvander@2168:  *
dvander@2168:  * This program is free software; you can redistribute it and/or modify it under
dvander@2168:  * the terms of the GNU General Public License, version 3.0, as published by the
dvander@2168:  * Free Software Foundation.
dvander@2168:  * 
dvander@2168:  * This program is distributed in the hope that it will be useful, but WITHOUT
dvander@2168:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
dvander@2168:  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
dvander@2168:  * details.
dvander@2168:  *
dvander@2168:  * You should have received a copy of the GNU General Public License along with
dvander@2168:  * this program.  If not, see <http://www.gnu.org/licenses/>.
dvander@2168:  *
dvander@2168:  * As a special exception, AlliedModders LLC gives you permission to link the
dvander@2168:  * code of this program (as well as its derivative works) to "Half-Life 2," the
dvander@2168:  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
dvander@2168:  * by the Valve Corporation.  You must obey the GNU General Public License in
dvander@2168:  * all respects for all other code used.  Additionally, AlliedModders LLC grants
dvander@2168:  * this exception to all derivative works.  AlliedModders LLC defines further
dvander@2168:  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
dvander@2168:  * or <http://www.sourcemod.net/license.php>.
dvander@2168:  *
dvander@2168:  * Version: $Id$
dvander@2168:  */
dvander@2168: 
dvander@2168: #pragma semicolon 1
dvander@2168: #include <sourcemod>
dvander@2168: 
dvander@2168: public Plugin:myinfo =
dvander@2168: {
dvander@2168: 	name = "RandomCycle",
dvander@2168: 	author = "AlliedModders LLC",
dvander@2168: 	description = "Randomly chooses the next map.",
dvander@2168: 	version = SOURCEMOD_VERSION,
dvander@2168: 	url = "http://www.sourcemod.net/"
dvander@2168: };
dvander@2168: 
dvander@2168: new Handle:g_Cvar_Nextmap = INVALID_HANDLE;
dvander@2168: new Handle:g_Cvar_ExcludeMaps = INVALID_HANDLE;
dvander@2168: 
dvander@2168: new Handle:g_MapList = INVALID_HANDLE;
dvander@2168: new Handle:g_OldMapList = INVALID_HANDLE;
dvander@2168: new g_mapListSerial = -1;
dvander@2168: 
dvander@2168: public OnPluginStart()
dvander@2168: {
dvander@2168: 	new arraySize = ByteCountToCells(33);	
dvander@2168: 	g_MapList = CreateArray(arraySize);
dvander@2168: 	g_OldMapList = CreateArray(arraySize);
dvander@2168: 
dvander@2168: 	g_Cvar_ExcludeMaps = CreateConVar("sm_randomcycle_exclude", "5", "Specifies how many past maps to exclude from the vote.", _, true, 0.0);
dvander@2168: 	
dvander@2168: 	AutoExecConfig(true, "randomcycle");
dvander@2168: }
dvander@2168: 
dvander@2168: public OnConfigsExecuted()
dvander@2168: {
dvander@2168: 	g_Cvar_Nextmap = FindConVar("sm_nextmap");
dvander@2168: 
dvander@2168: 	if (g_Cvar_Nextmap == INVALID_HANDLE)
dvander@2168: 	{
dvander@2168: 		LogError("FATAL: Cannot find sm_nextmap cvar. RandomCycle not loaded.");
dvander@2168: 		SetFailState("sm_nextmap not found");
dvander@2168: 	}
dvander@2168: 	
dvander@2168: 	if (ReadMapList(g_MapList, 
dvander@2168: 					g_mapListSerial, 
dvander@2168: 					"randomcycle", 
dvander@2168: 					MAPLIST_FLAG_CLEARARRAY|MAPLIST_FLAG_MAPSFOLDER)
dvander@2168: 		== INVALID_HANDLE)
dvander@2168: 	{
dvander@2168: 		if (g_mapListSerial == -1)
dvander@2168: 		{
dvander@2168: 			LogError("Unable to create a valid map list.");
dvander@2168: 		}
dvander@2168: 	}
dvander@2168: 	
dvander@2168: 	CreateTimer(5.0, Timer_RandomizeNextmap); // Small delay to give Nextmap time to complete OnMapStart()
dvander@2168: }
dvander@2168: 
dvander@2168: public Action:Timer_RandomizeNextmap(Handle:timer)
dvander@2168: {
dvander@2168: 	decl String:map[32];
dvander@2168: 
dvander@2168: 	new bool:oldMaps = false;
dvander@2168: 	if (GetConVarInt(g_Cvar_ExcludeMaps) && GetArraySize(g_MapList) > GetConVarInt(g_Cvar_ExcludeMaps))
dvander@2168: 	{
dvander@2168: 		oldMaps = true;
dvander@2168: 	}
dvander@2168: 	
dvander@2168: 	new b = GetRandomInt(0, GetArraySize(g_MapList) - 1);
dvander@2168: 	GetArrayString(g_MapList, b, map, sizeof(map));
dvander@2168: 
dvander@2168: 	while (oldMaps && FindStringInArray(g_OldMapList, map) != -1)
dvander@2168: 	{
dvander@2168: 		b = GetRandomInt(0, GetArraySize(g_MapList) - 1);
dvander@2168: 		GetArrayString(g_MapList, b, map, sizeof(map));
dvander@2168: 	}
dvander@2168: 	
dvander@2168: 	SetConVarString(g_Cvar_Nextmap, map);
dvander@2168: 	PushArrayString(g_OldMapList, map);
dvander@2168: 
dvander@2168: 	if (GetArraySize(g_OldMapList) > GetConVarInt(g_Cvar_ExcludeMaps))
dvander@2168: 	{
dvander@2168: 		RemoveFromArray(g_OldMapList, 0);
dvander@2168: 	}
dvander@2168: 
dvander@2168: 	LogMessage("RandomCycle has chosen %s for the nextmap.", map);	
dvander@2168: 
dvander@2168: 	return Plugin_Stop;
dvander@2168: }