[Johnny got his gun]

OK I'm posting this here as I've really got no intention yet of releasing this. I think it should work though. It's the same Mapchooser as in base package, just it adds a statistics collection feature thingy, I use it with Sqlite. Just to keep track of which map people vote for. The plugin logs the map votes into some table in a database. The plugin doesn't contain any way of seeing this data, you'll have to make use of the database yourself. I made a simple SQL line to sort maps like this:

CREATE VIEW [Top maps] AS
SELECT map_name as Map, SUM(result) as Score, COUNT(*) as Occurances FROM koppling, maps WHERE maps.map_id = koppling.map_id GROUP BY Map ORDER BY Score DESC;

It can end up like this, example from my test server:

RecNo	Map	Score	Occurances
1	fy_simpsons	142	86
2	fy_iceworld_cz	134	82
3	fy_pool_day	131	79
4	gg_boot-camp	115	100
5	fy_waterland_cz	108	91
6	mindmaze2	102	95
7	cs_crackhouse	99	91
8	cs_triggerhappy	43	60
9	fy_iceworld3000	10	2
10	ka_japarena	5	4

Score is the # of votes on a certain map, and Occurances is the number of appearances in Mapchooser vote sessions.

What you wanna do with it from here I don't know but... maybe it can give people some idea? Of what maps to remove cause they're impopular, and so on...

However as I've been out for a while I might not really have kept up with the latest do:s and don't:s. Feel free to comment on the coding, especially the new SQL interface which I'm not sure I've used correctly.

/* AMX Mod X
*   Nextmap Chooser Plugin
*
* by the AMX Mod X Development Team
*  originally developed by OLO
*
* This file is part of AMX Mod X.
*
*
*  This program is free software; you can redistribute it and/or modify it
*  under the terms of the GNU General Public License as published by the
*  Free Software Foundation; either version 2 of the License, or (at
*  your option) any later version.
*
*  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, write to the Free Software Foundation,
*  Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*  In addition, as a special exception, the author gives permission to
*  link the code of this program with the Half-Life Game Engine ("HL
*  Engine") and Modified Game Libraries ("MODs") developed by Valve,
*  L.L.C ("Valve"). You must obey the GNU General Public License in all
*  respects for all of the code used other than the HL Engine and MODs
*  from Valve. If you modify this file, you may extend this exception
*  to your version of the file, but you are not obligated to do so. If
*  you do not wish to do so, delete this exception statement from your
*  version.
*/

#include <amxmodx>
#include <amxmisc>
#include <sqlx>

#define MAX_MAPS    128
#define SELECTMAPS  5

new g_mapName[MAX_MAPS][32]
new g_mapNums

new g_nextName[SELECTMAPS]
new g_voteCount[SELECTMAPS + 2]
new g_mapVoteNum
new g_teamScore[2]
new g_lastMap[32]

new g_coloredMenus
new bool:g_selected = false

public plugin_init()
{
	register_plugin("Nextmap Chooser", AMXX_VERSION_STR, "AMXX Dev Team")
	register_dictionary("mapchooser.txt")
	register_dictionary("common.txt")

	new MenuName[64]

	format(MenuName, 63, "%L", "en", "CHOOSE_NEXTM")
	register_menucmd(register_menuid(MenuName), (-1^(-1<<(SELECTMAPS+2))), "countVote")
	register_cvar("amx_extendmap_max", "90")
	register_cvar("amx_extendmap_step", "15")

	if (cstrike_running())
		register_event("TeamScore", "team_score", "a")

	get_localinfo("lastMap", g_lastMap, 31)
	set_localinfo("lastMap", "")

	new maps_ini_file[64]
	get_configsdir(maps_ini_file, 63);
	format(maps_ini_file, 63, "%s/maps.ini", maps_ini_file);

	if (!file_exists(maps_ini_file))
		get_cvar_string("mapcyclefile", maps_ini_file, 63)
	if (loadSettings(maps_ini_file))
		set_task(15.0, "voteNextmap", 987456, "", 0, "b")

	g_coloredMenus = colored_menus()

	register_concmd("amx_votenextmap", "voteNextmap", ADMIN_CFG, "- start a vote for next map")
	register_cvar("amx_mapchooserstatsfile", "mapchooser_stats.db3")
	// This is a way to do a simple "Top maps" listing:
	// SELECT map_name as Map, SUM(result) as Score, COUNT(*) as Occurances FROM koppling, maps WHERE maps.map_id = koppling.map_id GROUP BY Map ORDER BY Score DESC
}

public checkVotes()
{
	// STATS BELOW
	for (new a = 0; a < g_mapVoteNum; a++) {
		server_print("%d. %s = %d", a + 1, g_mapName[g_nextName[a]], g_voteCount[a])
	}

	//new defaultsqltype[128]
	//get_cvar_string("amx_sql_type", defaultsqltype, 127)
	//set_cvar_string("amx_sql_type", "sqlite")

	// Write to database. (error buffer is for errors later)
	new statsfile[256], error[256]
	get_datadir(statsfile, 255)
	// amx_mapchooserstatsfile
	get_cvar_string("amx_mapchooserstatsfile", error, 255)
	format(statsfile, 255, "%s/%s", statsfile, error)

	// Connect db
	new Handle:tuple = SQL_MakeDbTuple("", "", "", statsfile)
	//server_print("statsfile: %s", statsfile)
	new errorCode
	new Handle:db = SQL_Connect(tuple, errorCode, error, 255)
	if (db == Empty_Handle)
		log_amx("Connection failed!")
	else {
		//server_print("Connected to sqlite db!")

		// Create tables
		if (!sqlite_TableExists(db, "voteset")) {
			new Handle:query = SQL_PrepareQuery(db, "\
				CREATE TABLE [voteset] (\
				[voteset_id] INTEGER PRIMARY KEY AUTOINCREMENT,\
				[voteset_timestamp] INTEGER NOT NULL);\
			")
	  		SQL_Execute(query)
	  		SQL_FreeHandle(query)
	  	}
	  	if (!sqlite_TableExists(db, "koppling")) {
			new Handle:query = SQL_PrepareQuery(db, "\
				CREATE TABLE [koppling] (\
				[voteset_id] INTEGER,\
				[map_id] INTEGER,\
				[result] INTEGER NOT NULL,\
				CONSTRAINT [sqlite_autoindex_koppling_1] PRIMARY KEY ([voteset_id], [map_id]));\
			")
	  		SQL_Execute(query)
	  		SQL_FreeHandle(query)
	  	}
		if (!sqlite_TableExists(db, "maps")) {
			new Handle:query = SQL_PrepareQuery(db, "\
				CREATE TABLE [maps] (\
				[map_id] INTEGER PRIMARY KEY AUTOINCREMENT,\
				[map_name] VARCHAR(256) NOT NULL);\
				CREATE UNIQUE INDEX [unik] ON [maps] ([map_name]);\
			")
	  		SQL_Execute(query)
	  		SQL_FreeHandle(query)
	  	}

		// Create the voteset record
		new timestamp = get_systime()
		new Handle:query = SQL_PrepareQuery(db, "INSERT INTO voteset (voteset_timestamp) VALUES (%d)", timestamp)
		if (SQL_Execute(query) == 0) {
			errorCode = SQL_QueryError(query, error, 255)
			log_amx("Failed creating voteset! Error code: %d, Error: %s", errorCode, error)
			SQL_FreeHandle(query)
		}
		else {
			new voteset_id = SQL_GetInsertId(query)
			SQL_FreeHandle(query)
			//server_print("Created voteset. Getting voteset_id = %d", voteset_id)
			// Insert/get map names and their ids
			new map_id
			for (new i = 0; i < g_mapVoteNum; i++) {
				query = SQL_PrepareQuery(db, "SELECT map_id FROM maps WHERE map_name = ^"%s^"", g_mapName[g_nextName[i]])
				if (SQL_Execute(query) == 0) {
					errorCode = SQL_QueryError(query, error, 255)
					log_amx("Failed selecting mapname! Breaking! Error code: %d, Error: %s", errorCode, error)
					SQL_FreeHandle(query)
					// Should also delete voteset here? :-P
					break
				}
				//server_print("Records returned: %d", SQL_NumResults(query))
				if (!SQL_MoreResults(query)) {
					SQL_FreeHandle(query)
					// Do insert of mapname
					query = SQL_PrepareQuery(db, "INSERT INTO maps (map_name) VALUES (^"%s^")", g_mapName[g_nextName[i]])
					if (SQL_Execute(query) == 0) {
						errorCode = SQL_QueryError(query, error, 255)
						log_amx("Failed inserting mapname! Breaking! Error code: %d, Error: %s", errorCode, error)
						SQL_FreeHandle(query)
						// Should also delete voteset here? :-P
						break
					}
					map_id = SQL_GetInsertId(query)
					SQL_FreeHandle(query)
				}
				else {
					// Get the map_id from resultset
					//SQL_NextRow(query)
					map_id = SQL_ReadResult(query, 0)
					SQL_FreeHandle(query)
				}
				//server_print("map_id = %d", map_id)

				// Now insert into koppling
				//server_print("INSERT INTO koppling (map_id, voteset_id, result) VALUES (%d, %d, %d)", map_id, voteset_id, g_voteCount[i])
				query = SQL_PrepareQuery(db, "INSERT INTO koppling (map_id, voteset_id, result) VALUES (%d, %d, %d)", map_id, voteset_id, g_voteCount[i])
				if (SQL_Execute(query) == 0) {
					errorCode = SQL_QueryError(query, error, 255)
					log_amx("Failed inserting into koppling! Breaking! Error code: %d, Error: %s", errorCode, error)
					SQL_FreeHandle(query)
					// Should also delete voteset here? :-P
					break
				}
				SQL_FreeHandle(query)
				//server_print("Insert OK")
				//server_print("%d = %s = %d, %d", a, g_mapName[g_nextName[a]], g_voteCount[a], g_nextName[a])
			}
		}
	}
	SQL_FreeHandle(db)
	//set_cvar_string("amx_sql_type", defaultsqltype)
	// STATS ABOVE

	new b = 0

	for (new a = 0; a < g_mapVoteNum; ++a)
		if (g_voteCount[b] < g_voteCount[a])
			b = a


	if (g_voteCount[SELECTMAPS] > g_voteCount[b]
	    && g_voteCount[SELECTMAPS] > g_voteCount[SELECTMAPS+1])
	{
		new mapname[32]

		get_mapname(mapname, 31)
		new Float:steptime = get_cvar_float("amx_extendmap_step")
		set_cvar_float("mp_timelimit", get_cvar_float("mp_timelimit") + steptime)
		client_print(0, print_chat, "%L", LANG_PLAYER, "CHO_FIN_EXT", steptime)
		log_amx("Vote: Voting for the nextmap finished. Map %s will be extended to next %.0f minutes", mapname, steptime)

		return
	}

	if (g_voteCount[b] && g_voteCount[SELECTMAPS + 1] <= g_voteCount[b])
	{
		set_cvar_string("amx_nextmap", g_mapName[g_nextName[b]])
	}

	new smap[32]

	get_cvar_string("amx_nextmap", smap, 31)
	client_print(0, print_chat, "%L", LANG_PLAYER, "CHO_FIN_NEXT", smap)
	server_print("Vote: Voting for the nextmap finished. The nextmap will be %s", smap)
}

public countVote(id, key)
{
	if (get_cvar_float("amx_vote_answers"))
	{
		new name[32]
		get_user_name(id, name, 31)

		if (key == SELECTMAPS)
			client_print(0, print_chat, "%L", LANG_PLAYER, "CHOSE_EXT", name)
		else if (key < SELECTMAPS)
			client_print(0, print_chat, "%L", LANG_PLAYER, "X_CHOSE_X", name, g_mapName[g_nextName[key]])
	}
	++g_voteCount[key]

	return PLUGIN_HANDLED
}

bool:isInMenu(id)
{
	for (new a = 0; a < g_mapVoteNum; ++a)
		if (id == g_nextName[a])
			return true
	return false
}

public voteNextmap()
{
	new winlimit = get_cvar_num("mp_winlimit")
	new maxrounds = get_cvar_num("mp_maxrounds")

	if (winlimit)
	{
		new c = winlimit - 2

		if ((c > g_teamScore[0]) && (c > g_teamScore[1]))
		{
			g_selected = false
			return
		}
	}
	else if (maxrounds)
	{
		if ((maxrounds - 2) > (g_teamScore[0] + g_teamScore[1]))
		{
			g_selected = false
			return
		}
	} else {
		new timeleft = get_timeleft()

		if (timeleft < 1 || timeleft > 129)
		{
			g_selected = false
			return
		}
	}

	if (g_selected)
		return

	g_selected = true

	new menu[512], a, mkeys = (1<<SELECTMAPS + 1)
	new pos = format(menu, 511, g_coloredMenus ? "\y%L:\w^n^n" : "%L:^n^n", LANG_SERVER, "CHOOSE_NEXTM")
	new dmax = (g_mapNums > SELECTMAPS) ? SELECTMAPS : g_mapNums

	for (g_mapVoteNum = 0; g_mapVoteNum < dmax; ++g_mapVoteNum)
	{
		a = random_num(0, g_mapNums - 1)

		while (isInMenu(a))
			if (++a >= g_mapNums) a = 0

		g_nextName[g_mapVoteNum] = a
		pos += format(menu[pos], 511, "%d. %s^n", g_mapVoteNum + 1, g_mapName[a])
		mkeys |= (1<<g_mapVoteNum)
		g_voteCount[g_mapVoteNum] = 0
	}

	menu[pos++] = '^n'
	g_voteCount[SELECTMAPS] = 0
	g_voteCount[SELECTMAPS + 1] = 0

	new mapname[32]
	get_mapname(mapname, 31)

	if ((winlimit + maxrounds) == 0 && (get_cvar_float("mp_timelimit") < get_cvar_float("amx_extendmap_max")))
	{
		pos += format(menu[pos], 511, "%d. %L^n", SELECTMAPS + 1, LANG_SERVER, "EXTED_MAP", mapname)
		mkeys |= (1<<SELECTMAPS)
	}

	format(menu[pos], 511, "%d. %L", SELECTMAPS+2, LANG_SERVER, "NONE")
	new MenuName[64]

	format(MenuName, 63, "%L", "en", "CHOOSE_NEXTM")
	show_menu(0, mkeys, menu, 15, MenuName)
	set_task(15.0, "checkVotes")
	client_print(0, print_chat, "%L", LANG_SERVER, "TIME_CHOOSE")
	client_cmd(0, "spk Gman/Gman_Choose2")
	log_amx("Vote: Voting for the nextmap started")

	server_print(menu)
}

loadSettings(filename[])
{
	if (!file_exists(filename))
		return 0

	new szText[32]
	new a, pos = 0
	new currentMap[32]

	get_mapname(currentMap, 31)

	while ((g_mapNums < MAX_MAPS) && read_file(filename, pos++, szText, 31, a))
	{
		if (szText[0] != ';' && parse(szText, g_mapName[g_mapNums], 31) && is_map_valid(g_mapName[g_mapNums])
			&& !equali(g_mapName[g_mapNums], g_lastMap) && !equali(g_mapName[g_mapNums], currentMap))
			++g_mapNums
	}

	return g_mapNums
}

public team_score()
{
	new team[2]

	read_data(1, team, 1)
	g_teamScore[(team[0]=='C') ? 0 : 1] = read_data(2)
}

public plugin_end()
{
	new current_map[32]

	get_mapname(current_map, 31)
	set_localinfo("lastMap", current_map)
}