/**

 * vim: set ts=4 :

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

 * SourceMod Mapchooser Plugin

 * Creates a map vote at appropriate times, setting sm_nextmap to the winning

 * vote

 *

 * 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 = "MapChooser",

	author = "AlliedModders LLC",

	description = "Automated Map Voting",

	version = SOURCEMOD_VERSION,

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

};

new Handle:g_Cvar_Winlimit = INVALID_HANDLE;

new Handle:g_Cvar_Maxrounds = INVALID_HANDLE;

new Handle:g_Cvar_Fraglimit = INVALID_HANDLE;

new Handle:g_Cvar_Nextmap = INVALID_HANDLE;

new Handle:g_Cvar_StartTime = INVALID_HANDLE;

new Handle:g_Cvar_StartRounds = INVALID_HANDLE;

new Handle:g_Cvar_StartFrags = INVALID_HANDLE;

new Handle:g_Cvar_ExtendTimeStep = INVALID_HANDLE;

new Handle:g_Cvar_ExtendRoundStep = INVALID_HANDLE;

new Handle:g_Cvar_ExtendFragStep = INVALID_HANDLE;

new Handle:g_Cvar_ExcludeMaps = INVALID_HANDLE;

new Handle:g_Cvar_IncludeMaps = INVALID_HANDLE;

new Handle:g_Cvar_NoVoteMode = INVALID_HANDLE;

new Handle:g_Cvar_Extend = INVALID_HANDLE;

new Handle:g_VoteTimer = INVALID_HANDLE;

new Handle:g_RetryTimer = INVALID_HANDLE;

new Handle:g_MapList = INVALID_HANDLE;

new Handle:g_OldMapList = INVALID_HANDLE;

new Handle:g_NextMapList = INVALID_HANDLE;

new Handle:g_TeamScores = INVALID_HANDLE;

new Handle:g_VoteMenu = INVALID_HANDLE;

new g_Extends;

new g_TotalRounds;

new bool:g_HasVoteStarted;

new g_mapFileSerial = -1;

#define VOTE_EXTEND "##extend##"

public OnPluginStart()

{

	LoadTranslations("mapchooser.phrases");

	new arraySize = ByteCountToCells(33);

	g_MapList = CreateArray(arraySize);

	g_OldMapList = CreateArray(arraySize);

	g_NextMapList = CreateArray(arraySize);

	g_Cvar_StartTime = CreateConVar("sm_mapvote_start", "3.0", "Specifies when to start the vote based on time remaining.", _, true, 1.0);

	g_Cvar_StartRounds = CreateConVar("sm_mapvote_startround", "2.0", "Specifies when to start the vote based on rounds remaining.", _, true, 1.0);

	g_Cvar_StartFrags = CreateConVar("sm_mapvote_startfrags", "5.0", "Specifies when to start the vote base on frags remaining.", _, true, 1.0);

	g_Cvar_ExtendTimeStep = CreateConVar("sm_extendmap_timestep", "15", "Specifies how much many more minutes each extension makes", _, true, 5.0);

	g_Cvar_ExtendRoundStep = CreateConVar("sm_extendmap_roundstep", "5", "Specifies how many more rounds each extension makes", _, true, 5.0);

	g_Cvar_ExtendFragStep = CreateConVar("sm_extendmap_fragstep", "10", "Specifies how many more frags are allowed when map is extended.", _, true, 5.0);	

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

	g_Cvar_IncludeMaps = CreateConVar("sm_mapvote_include", "5", "Specifies how many maps to include in the vote.", _, true, 2.0, true, 6.0);

	g_Cvar_NoVoteMode = CreateConVar("sm_mapvote_novote", "1", "Specifies whether or not MapChooser should pick a map if no votes are received.", _, true, 0.0, true, 1.0);

	g_Cvar_Extend = CreateConVar("sm_mapvote_extend", "0", "Number of extensions allowed each map.", _, true, 0.0);

	RegAdminCmd("sm_mapvote", Command_Mapvote, ADMFLAG_CHANGEMAP, "sm_mapvote - Forces MapChooser to attempt to run a map vote now.");

	g_Cvar_Winlimit = FindConVar("mp_winlimit");

	g_Cvar_Maxrounds = FindConVar("mp_maxrounds");

	g_Cvar_Fraglimit = FindConVar("mp_fraglimit");

	if (g_Cvar_Winlimit != INVALID_HANDLE || g_Cvar_Maxrounds != INVALID_HANDLE)

	{

		HookEvent("round_end", Event_RoundEnd);

	}

	if (g_Cvar_Fraglimit != INVALID_HANDLE)

	{

		HookEvent("player_death", Event_PlayerDeath);		

	}

	AutoExecConfig(true, "mapchooser");

}

public OnConfigsExecuted()

{

	g_Cvar_Nextmap = FindConVar("sm_nextmap");

	if (g_Cvar_Nextmap == INVALID_HANDLE)

	{

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

		SetFailState("sm_nextmap not found");

	}

	if (ReadMapList(g_MapList,

					 g_mapFileSerial, 

					 "mapchooser",

					 MAPLIST_FLAG_CLEARARRAY|MAPLIST_FLAG_MAPSFOLDER)

		!= INVALID_HANDLE)

	{

		if (g_mapFileSerial == -1)

		{

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

		}

	}

	CreateNextVote();

	SetupTimeleftTimer();

	SetConVarString(g_Cvar_Nextmap, "Pending Vote");

	if (g_TeamScores != INVALID_HANDLE)

	{

		CloseHandle(g_TeamScores);

	}

	g_TeamScores = CreateArray(2);

	g_TotalRounds = 0;

	g_Extends = 0;

}

public OnMapEnd()

{

	g_HasVoteStarted = false;

	if (g_VoteTimer != INVALID_HANDLE)

	{

		KillTimer(g_VoteTimer);

		g_VoteTimer = INVALID_HANDLE;

	}

	if (g_RetryTimer != INVALID_HANDLE)

	{

		KillTimer(g_RetryTimer);

		g_RetryTimer = INVALID_HANDLE;

	}

}

public OnMapTimeLeftChanged()

{

	if (GetArraySize(g_MapList))

	{

		SetupTimeleftTimer();

	}

}

SetupTimeleftTimer()

{

	new time;

	if (GetMapTimeLeft(time) && time > 0)

	{

		new startTime = GetConVarInt(g_Cvar_StartTime) * 60;

		if (time - startTime < 0)

		{

			InitiateVote();		

		}

		else

		{

			if (g_VoteTimer != INVALID_HANDLE)

			{

				KillTimer(g_VoteTimer);

				g_VoteTimer = INVALID_HANDLE;

			}	

			g_VoteTimer = CreateTimer(float(time - startTime), Timer_StartMapVote);

		}		

	}

}

public Action:Timer_StartMapVote(Handle:timer)

{

	if (!GetArraySize(g_MapList))

	{

		return Plugin_Stop;

	}		

	if (timer == g_RetryTimer)

	{

		g_RetryTimer = INVALID_HANDLE;

	}

	else

	{

		g_VoteTimer = INVALID_HANDLE;

	}

	InitiateVote();

	return Plugin_Stop;

}

/* You ask, why don't you just use team_score event? And I answer... Because CSS doesn't. */

public Event_RoundEnd(Handle:event, const String:name[], bool:dontBroadcast)

{

	if (!GetArraySize(g_MapList) || g_HasVoteStarted)

	{

		return;

	}

	new winner = GetEventInt(event, "winner");

	if (winner == 0 || winner == 1)

	{

		return;

	}

	g_TotalRounds++;

	new team[2], teamPos = -1;

	for (new i; i < GetArraySize(g_TeamScores); i++)

	{

		GetArrayArray(g_TeamScores, i, team);

		if (team[0] == winner)

		{

			teamPos = i;

			break;

		}		

	}

	if (teamPos == -1)

	{

		team[0] = winner;

		team[1] = 1;

		PushArrayArray(g_TeamScores, team);

	}

	else

	{

		team[1]++;

		SetArrayArray(g_TeamScores, teamPos, team);

	}	

	if (g_Cvar_Winlimit != INVALID_HANDLE)

	{

		new winlimit = GetConVarInt(g_Cvar_Winlimit);

		if (winlimit)

		{

			if (team[1] >= (winlimit - GetConVarInt(g_Cvar_StartRounds)))

			{

				InitiateVote();

			}

		}

	}

	if (g_Cvar_Maxrounds != INVALID_HANDLE)

	{

		new maxrounds = GetConVarInt(g_Cvar_Maxrounds);

		if (maxrounds)

		{

			if (g_TotalRounds >= (maxrounds - GetConVarInt(g_Cvar_StartRounds)))

			{

				InitiateVote();

			}			

		}

	}

}

public Event_PlayerDeath(Handle:event, const String:name[], bool:dontBroadcast)

{

	if (!GetArraySize(g_MapList) || g_Cvar_Fraglimit == INVALID_HANDLE || g_HasVoteStarted)

	{

		return;

	}

	if (!GetConVarInt(g_Cvar_Fraglimit))

	{

		return;

	}

	new fragger = GetClientOfUserId(GetEventInt(event, "attacker"));

	if (fragger && GetClientFrags(fragger) >= (GetConVarInt(g_Cvar_Fraglimit) - GetConVarInt(g_Cvar_StartFrags)))

	{

		InitiateVote();

	}

}

public Action:Command_Mapvote(client, args)

{

	InitiateVote();

	return Plugin_Handled;	

}

InitiateVote()

{

	if (g_HasVoteStarted || g_RetryTimer != INVALID_HANDLE)

	{

		return;

	}

	if (IsVoteInProgress())

	{

		// Can't start a vote, try again in 5 seconds.

		g_RetryTimer = CreateTimer(5.0, Timer_StartMapVote);

		return;

	}		

	g_HasVoteStarted = true;

	g_VoteMenu = CreateMenu(Handler_MapVoteMenu, MenuAction:MENU_ACTIONS_ALL);

	SetMenuTitle(g_VoteMenu, "Vote Nextmap");

	decl String:map[32];

	for (new i = 0; i < GetArraySize(g_NextMapList); i++)

	{

		GetArrayString(g_NextMapList, i, map, sizeof(map));

		AddMenuItem(g_VoteMenu, map, map);

	}

	if (GetConVarBool(g_Cvar_Extend) && g_Extends < GetConVarInt(g_Cvar_Extend))

	{

		AddMenuItem(g_VoteMenu, VOTE_EXTEND, "Extend Map");

	}

	SetMenuExitButton(g_VoteMenu, false);

	VoteMenuToAll(g_VoteMenu, 20);

	LogMessage("Voting for next map has started.");

	PrintToChatAll("[SM] %t", "Nextmap Voting Started");

}

public Handler_MapVoteMenu(Handle:menu, MenuAction:action, param1, param2)

{

	switch (action)

	{

		case MenuAction_End:

		{

			g_VoteMenu = INVALID_HANDLE;

			CloseHandle(menu);

		}

		case MenuAction_Display:

		{

	 		decl String:buffer[255];

			Format(buffer, sizeof(buffer), "%T", "Vote Nextmap", param1);

			new Handle:panel = Handle:param2;

			SetPanelTitle(panel, buffer);

		}		

		case MenuAction_DisplayItem:

		{

			if (GetMenuItemCount(menu) - 1 == param2)

			{

				decl String:map[64], String:buffer[255];

				GetMenuItem(menu, param2, map, sizeof(map));

				if (strcmp(map, VOTE_EXTEND, false) == 0)

				{

					Format(buffer, sizeof(buffer), "%T", "Extend Map", param1);

					return RedrawMenuItem(buffer);

				}

			}

		}		

		// Why am I commented out? Because BAIL hasn't decided yet if

		// vote notification will be built into the Vote API.

		/*case MenuAction_Select:

		{

			decl String:Name[32], String:Map[32];

			GetClientName(param1, Name, sizeof(Name));

			GetMenuItem(menu, param2, Map, sizeof(Map));

			PrintToChatAll("[SM] %s has voted for map '%s'", Name, Map);

		}*/

		case MenuAction_VoteCancel:

		{

			// If we receive 0 votes, pick at random.

			if (param1 == VoteCancel_NoVotes && GetConVarBool(g_Cvar_NoVoteMode))

			{

				new count = GetMenuItemCount(menu);

				new item = GetRandomInt(0, count - 1);

				decl String:map[32];

				GetMenuItem(menu, item, map, sizeof(map));

				while (strcmp(map, VOTE_EXTEND, false) == 0)

				{

					item = GetRandomInt(0, count - 1);

					GetMenuItem(menu, item, map, sizeof(map));

				}

				SetNextMap(map);			

			}

			else

			{

				// We were actually cancelled. What should we do?

			}

		}

		case MenuAction_VoteEnd:

		{

			decl String:map[32];

			GetMenuItem(menu, param1, map, sizeof(map));

			if (strcmp(map, VOTE_EXTEND, false) == 0)

			{

				g_Extends++;

				new time;

				if (GetMapTimeLimit(time))

				{

					if (time > 0)

					{

						ExtendMapTimeLimit(GetConVarInt(g_Cvar_ExtendTimeStep)*60);						

					}

				}

				if (g_Cvar_Winlimit != INVALID_HANDLE)

				{

					new winlimit = GetConVarInt(g_Cvar_Winlimit);

					if (winlimit)

					{

						SetConVarInt(g_Cvar_Winlimit, winlimit + GetConVarInt(g_Cvar_ExtendRoundStep));

					}					

				}

				if (g_Cvar_Maxrounds != INVALID_HANDLE)

				{

					new maxrounds = GetConVarInt(g_Cvar_Maxrounds);

					if (maxrounds)

					{

						SetConVarInt(g_Cvar_Maxrounds, maxrounds + GetConVarInt(g_Cvar_ExtendRoundStep));

					}

				}

				if (g_Cvar_Fraglimit != INVALID_HANDLE)

				{

					new fraglimit = GetConVarInt(g_Cvar_Fraglimit);

					if (fraglimit)

					{

						SetConVarInt(g_Cvar_Fraglimit, fraglimit + GetConVarInt(g_Cvar_ExtendFragStep));						

					}

				}

				PrintToChatAll("[SM] %t", "Current Map Extended");

				LogMessage("Voting for next map has finished. The current map has been extended.");

				// We extended, so we'll have to vote again.

				g_HasVoteStarted = false;

				CreateNextVote();

				SetupTimeleftTimer();

			}

			else

			{

				SetNextMap(map);

			}

		}

	}

	return 0;

}

SetNextMap(const String:map[])

{

	SetConVarString(g_Cvar_Nextmap, map);

	PushArrayString(g_OldMapList, map);

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

	{

		RemoveFromArray(g_OldMapList, 0);

	}

	PrintToChatAll("[SM] %t", "Nextmap Voting Finished", map);

	LogMessage("Voting for next map has finished. Nextmap: %s.", map);	

}

CreateNextVote()

{

	if(g_NextMapList != INVALID_HANDLE)

	{

		ClearArray(g_NextMapList);

	}

	decl String:map[32];

	new index, Handle:tempMaps  = CloneArray(g_MapList);

	GetCurrentMap(map, sizeof(map));

	index = FindStringInArray(tempMaps, map);

	if (index != -1)

	{

		RemoveFromArray(tempMaps, index);

	}	

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

	{

		for (new i = 0; i < GetArraySize(g_OldMapList); i++)

		{

			GetArrayString(g_OldMapList, i, map, sizeof(map));

			index = FindStringInArray(tempMaps, map);

			if (index != -1)

			{

				RemoveFromArray(tempMaps, index);

			}

		}	

	}

	new limit = (GetConVarInt(g_Cvar_IncludeMaps) < GetArraySize(tempMaps) ? GetConVarInt(g_Cvar_IncludeMaps) : GetArraySize(tempMaps));

	for (new i = 0; i < limit; i++)

	{

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

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

		PushArrayString(g_NextMapList, map);

		RemoveFromArray(tempMaps, b);

	}

	CloseHandle(tempMaps);

}