/**

 * vim: set ts=4 :

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

 * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.

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

 *

 * This file is part of the SourceMod/SourcePawn SDK.

 *

 * 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: $Id$

 */

#if defined _clients_included

 #endinput

#endif

#define _clients_included

/**

 * Network flow directions.

 */

enum NetFlow

{

	NetFlow_Outgoing = 0,	/**< Outgoing traffic */

	NetFlow_Incoming,		/**< Incoming traffic */

	NetFlow_Both,			/**< Both values added together */

};

/**

 * MAXPLAYERS is not the same as MaxClients.

 * MAXPLAYERS is a hardcoded value as an upper limit.  MaxClients changes based on the server.

 *

 * Both GetMaxClients() and MaxClients are only available once the map is loaded, and should 

 * not be used in OnPluginStart().

 */

#define MAXPLAYERS		65	/**< Maximum number of players SourceMod supports */

#define MAX_NAME_LENGTH 32	/**< Maximum buffer required to store a client name */

public const MaxClients;	/**< Maximum number of players the server supports (dynamic) */

/**

 * Called on client connection.  If you return true, the client will be allowed in the server.

 * If you return false (or return nothing), the client will be rejected.  If the client is 

 * rejected by this forward or any other, OnClientDisconnect will not be called.

 *

 * Note: Do not write to rejectmsg if you plan on returning true.  If multiple plugins write

 * to the string buffer, it is not defined which plugin's string will be shown to the client,

 * but it is guaranteed one of them will.

 *

 * @param client		Client index.

 * @param rejectmsg		Buffer to store the rejection message when the connection is refused.

 * @param maxlen		Maximum number of characters for rejection buffer.

 * @return				True to validate client's connection, false to refuse it.

 */

forward bool:OnClientConnect(client, String:rejectmsg[], maxlen);

/**

 * Called once a client successfully connects.  This callback is paired with OnClientDisconnect.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientConnected(client);

/**

 * Called when a client is entering the game.

 *

 * Whether a client has a steamid is undefined until OnClientAuthorized

 * is called, which may occur either before or after OnClientPutInServer.

 * Similarly, use OnClientPostAdminCheck() if you need to verify whether 

 * connecting players are admins.

 *

 * GetClientCount() will include clients as they are passed through this 

 * function, as clients are already in game at this point.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientPutInServer(client);

/**

 * Called when a client is disconnecting from the server.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientDisconnect(client);

/**

 * Called when a client is disconnected from the server.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientDisconnect_Post(client);

/**

 * Called when a client is sending a command.

 *

 * As of SourceMod 1.3, the client is guaranteed to be in-game.

 * Use command listeners (console.inc) for more advanced hooks.

 *

 * @param client		Client index.

 * @param args			Number of arguments.

 * @noreturn

 */

forward Action:OnClientCommand(client, args);

/**

 * Called whenever the client's settings are changed.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientSettingsChanged(client);

/**

 * Called when a client receives a Steam ID.  The state of a client's 

 * authorization as an admin is not guaranteed here.  Use 

 * OnClientPostAdminCheck() if you need a client's admin status.

 *

 * This is called by bots, but the ID will be "BOT".

 *

 * @param client		Client index.

 * @param auth			Client auth string.

 * @noreturn

 */

forward OnClientAuthorized(client, const String:auth[]);

/**

 * Called once a client is authorized and fully in-game, but 

 * before admin checks are done.  This can be used to override 

 * the default admin checks for a client.  You should only use 

 * this for overriding; use OnClientPostAdminCheck() instead 

 * if you want notification.

 *

 * Note: If handled/blocked, PostAdminCheck must be signalled 

 * manually via NotifyPostAdminCheck().

 *

 * This callback is gauranteed to occur on all clients, and always 

 * after each OnClientPutInServer() call.

 *

 * @param client		Client index.

 * @return				Plugin_Handled to block admin checks.

 */

forward Action:OnClientPreAdminCheck(client);

/**

 * Called directly before OnClientPostAdminCheck() as a method to 

 * alter administrative permissions before plugins perform final 

 * post-connect operations.  

 *

 * In general, do not use this function unless you are specifically 

 * attempting to change access permissions.  Use OnClientPostAdminCheck() 

 * instead if you simply want to perform post-connect authorization 

 * routines.

 *

 * See OnClientPostAdminCheck() for more information.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientPostAdminFilter(client);

/**

 * Called once a client is authorized and fully in-game, and 

 * after all post-connection authorizations have been performed.  

 *

 * This callback is gauranteed to occur on all clients, and always 

 * after each OnClientPutInServer() call.

 *

 * @param client		Client index.

 * @noreturn

 */

forward OnClientPostAdminCheck(client);

/**

 * This function will be deprecated in a future release.  Use the MaxClients variable instead.

 *

 * Returns the maximum number of clients allowed on the server.  This may 

 * return 0 if called before OnMapStart(), and thus should not be called 

 * in OnPluginStart().  

 *

 * You should not globally cache the value to GetMaxClients() because it can change from 

 * SourceTV or TF2's arena mode.  Use the "MaxClients" dynamic variable documented at the 

 * top of this file.

 *

 * @return				Maximum number of clients allowed.

 */

native GetMaxClients();

/**

 * Returns the maximum number of human players allowed on the server.  This is 

 * a game-specific function used on newer games to limit the number of humans

 * that can join a game and can be lower than MaxClients. It is the number often

 * reflected in the server browser or when viewing the output of the status command.

 * On unsupported games or modes without overrides, it will return the same value

 * as MaxClients.

 *

 * You should not globally cache the value to GetMaxHumanPlayers() because it can change across

 * game modes. You may still cache it locally.

 *

 * @return				Maximum number of humans allowed.

 */

native GetMaxHumanPlayers();

/**

 * Returns the client count put in the server.

 *

 * @param inGameOnly	If false connecting players are also counted.

 * @return				Client count in the server.

 */

native GetClientCount(bool:inGameOnly=true);

/**

 * Returns the client's name.

 *

 * @param client		Player index.

 * @param name			Buffer to store the client's name.

 * @param maxlen		Maximum length of string buffer (includes NULL terminator).

 * @return				True on success, false otherwise.

 * @error				If the client is not connected an error will be thrown.

 */

native bool:GetClientName(client, String:name[], maxlen);

/**

 * Retrieves a client's IP address.

 *

 * @param client		Player index.

 * @param name			Buffer to store the client's ip address.

 * @param maxlen		Maximum length of string buffer (includes NULL terminator).

 * @param remport		Remove client's port from the ip string (true by default).

 * @return				True on success, false otherwise.

 * @error				If the client is not connected or the index is invalid.

 */

native bool:GetClientIP(client, String:ip[], maxlen, bool:remport=true);

/**

 * Retrieves a client's authentication string (SteamID).

 *

 * @param client		Player index.

 * @param auth			Buffer to store the client's auth string.

 * @param maxlen		Maximum length of string buffer (includes NULL terminator).

 * @param validate		Check backend validation status.

 * 				DO NOT PASS FALSE UNLESS YOU UNDERSTAND THE CONSEQUENCES,

 *			        You WILL KNOW if you need to use this, MOST WILL NOT.

 * @return				True on success, false otherwise.

 * @error				If the client is not connected or the index is invalid.

 */

native bool:GetClientAuthString(client, String:auth[], maxlen, bool:validate=true);

/**

 * Returns the client's Steam account ID.

 *

 * @param client		Client Index.

 * @param validate		Check backend validation status.

 * 				DO NOT PASS FALSE UNLESS YOU UNDERSTAND THE CONSEQUENCES,

 *			        You WILL KNOW if you need to use this, MOST WILL NOT.

 * @return				Steam account ID or 0 if not available.

 * @error				If the client is not connected or the index is invalid.

 */

native GetSteamAccountID(client, bool:validate=true);

/**

 * Retrieves a client's user id, which is an index incremented for every client

 * that joins the server.

 *

 * @param client		Player index.

 * @return				User id of the client.

 * @error 				If the client is not connected or the index is invalid.

 */

native GetClientUserId(client);

/**

 * Returns if a certain player is connected.

 *

 * @param client		Player index.

 * @return				True if player is connected to the server, false otherwise.

 */

native bool:IsClientConnected(client);

/**

 * Returns if a certain player has entered the game.

 *

 * @param client		Player index (index does not have to be connected).

 * @return				True if player has entered the game, false otherwise.

 * @error				Invalid client index.

 */

native bool:IsClientInGame(client);

/**

 * Returns if a client is in the "kick queue" (i.e. the client will be kicked 

 * shortly and thus they should not appear as valid).

 *

 * @param client		Player index (must be connected).

 * @return				True if in the kick queue, false otherwise.

 * @error				Invalid client index.

 */

native bool:IsClientInKickQueue(client);

/**

 * Backwards compatibility stock - use IsClientInGame

 * @deprecated			Renamed to IsClientInGame

 */

#pragma deprecated Use IsClientInGame() instead

stock bool:IsPlayerInGame(client)

{

	return IsClientInGame(client);

}

/**

 * Returns if a certain player has been authenticated.

 *

 * @param client		Player index.

 * @return				True if player has been authenticated, false otherwise.

 */

native bool:IsClientAuthorized(client);

/**

 * Returns if a certain player is a fake client.

 *

 * @param client		Player index.

 * @return				True if player is a fake client, false otherwise.

 */

native bool:IsFakeClient(client);

/**

 * Returns if a certain player is the SourceTV bot.

 *

 * @param client		Player index.

 * @return				True if player is the SourceTV bot, false otherwise.

 */

native bool:IsClientSourceTV(client);

/**

 * Returns if a certain player is the Replay bot.

 *

 * @param client		Player index.

 * @return				True if player is the Replay bot, false otherwise.

 */

native bool:IsClientReplay(client);

/**

 * Returns if a certain player is an observer/spectator.

 *

 * @param client		Player index.

 * @return				True if player is an obverser, false otherwise.

 */

native bool:IsClientObserver(client);

/**

 * Returns if the client is alive or dead.

 *

 * Note: This function was originally in SDKTools and was moved to core.

 *

 * @param client		Player's index.

 * @return				True if the client is alive, false otherwise.

 * @error				Invalid client index, client not in game, or no mod support.

 */

native bool:IsPlayerAlive(client);

/**

 * Retrieves values from client replicated keys.

 *

 * @param client		Player's index.

 * @param key			Key string.

 * @param value			Buffer to store value.

 * @param maxlen		Maximum length of valve (UTF-8 safe).

 * @return 				True on success, false otherwise.

 * @error				Invalid client index, or client not connected.

 */

native bool:GetClientInfo(client, const String:key[], String:value[], maxlen);

/**

 * Retrieves a client's team index.

 *

 * @param client		Player's index.

 * @return				Team index the client is on (mod specific).

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientTeam(client);

/**

 * Sets a client's AdminId.  

 *

 * @param client		Player's index.

 * @param id			AdminId to set.  INVALID_ADMIN_ID removes admin permissions.

 * @param temp			True if the id should be freed on disconnect.

 * @noreturn

 * @error				Invalid client index, client not connected, or bogus AdminId.

 */

native SetUserAdmin(client, AdminId:id, bool:temp=false);

/**

 * Retrieves a client's AdminId.

 *

 * @param client		Player's index.

 * @return				AdminId of the client, or INVALID_ADMIN_ID if none.

 * @error				Invalid client index, or client not connected.

 */

native AdminId:GetUserAdmin(client);

/**

 * Sets access flags on a client.  If the client is not an admin,

 * a temporary, anonymous AdminId is given.

 *

 * @param client		Player's index.

 * @param ...			Flags to set on the client.

 * @noreturn

 * @error				Invalid client index, or client not connected.

 */

native AddUserFlags(client, AdminFlag:...);

/**

 * Removes flags from a client.  If the client is not an admin,

 * this has no effect.

 *

 * @param client		Player's index.

 * @param ...			Flags to remove from the client.

 * @noreturn

 * @error				Invalid client index, or client not connected.

 */

native RemoveUserFlags(client, AdminFlag:...);

/** 

 * Sets access flags on a client using bits instead of flags.  If the

 * client is not an admin, and flags not 0, a temporary, anonymous AdminId is given.

 *

 * @param client		Player's index.

 * @param flags			Bitstring of flags to set on client.

 * @noreturn

 */

native SetUserFlagBits(client, flags);

/**

 * Returns client access flags.  If the client is not an admin,

 * the result is always 0.

 * 

 * @param client		Player's index.

 * @return				Flags

 * @error				Invalid client index, or client not connected.

 */

native GetUserFlagBits(client);

/**

 * Returns whether a user can target another user.

 * This is a helper function for CanAdminTarget.

 *

 * @param client		Player's index.

 * @param target		Target player's index.

 * @return				True if target is targettable by the player, false otherwise.

 * @error				Invalid or unconnected player indexers.

 */

native bool:CanUserTarget(client, target);

/**

 * Runs through the Core-defined admin authorization checks on a player.

 * Has no effect if the player is already an admin.

 *

 * Note: This function is based on the internal cache only.

 *

 * @param client		Client index.

 * @return				True if access was changed, false if it did not.

 * @error				Invalid client index or client not in-game AND authorized.

 */

native bool:RunAdminCacheChecks(client);

/**

 * Signals that a player has completed post-connection admin checks.

 * Has no effect if the player has already had this event signalled.

 *

 * Note: This must be sent even if no admin id was assigned.

 *

 * @param client		Client index.

 * @noreturn

 * @error				Invalid client index or client not in-game AND authorized.

 */

native NotifyPostAdminCheck(client);

/** 

 * Creates a fake client.

 *

 * @param name			Name to use.

 * @return				Client index on success, 0 otherwise.

 */

native CreateFakeClient(const String:name[]);

/**

 * Sets a convar value on a fake client.

 *

 * @param client		Client index.

 * @param cvar			ConVar name.

 * @param value			ConVar value.

 * @noreturn

 * @error				Invalid client index, client not connected,

 *						or client not a fake client.

 */

native SetFakeClientConVar(client, const String:cvar[], const String:value[]);

/**

 * Returns the client's health.

 *

 * @param client		Player's index.

 * @return				Health value.

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientHealth(client);

/**

 * Returns the client's model name.

 *

 * @param client		Player's index.

 * @param model			Buffer to store the client's model name.

 * @param maxlen		Maximum length of string buffer (includes NULL terminator).

 * @noreturn

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientModel(client, String:model[], maxlen);

/**

 * Returns the client's weapon name.

 *

 * @param client		Player's index.

 * @param weapon		Buffer to store the client's weapon name.

 * @param maxlen		Maximum length of string buffer (includes NULL terminator).

 * @noreturn

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientWeapon(client, String:weapon[], maxlen);

/**

 * Returns the client's max size vector.

 *

 * @param client		Player's index.

 * @param vec			Destination vector to store the client's max size.

 * @noreturn

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientMaxs(client, Float:vec[3]);

/**

 * Returns the client's min size vector.

 *

 * @param client		Player's index.

 * @param vec			Destination vector to store the client's min size.

 * @noreturn

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientMins(client, Float:vec[3]);

/**

 * Returns the client's position angle.

 *

 * @param client		Player's index.

 * @param ang			Destination vector to store the client's position angle.

 * @noreturn

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientAbsAngles(client, Float:ang[3]);

/**

 * Returns the client's origin vector.

 *

 * @param client		Player's index.

 * @param vec			Destination vector to store the client's origin vector.

 * @noreturn

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientAbsOrigin(client, Float:vec[3]);

/**

 * Returns the client's armor.

 *

 * @param client		Player's index.

 * @return				Armor value.

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientArmor(client);

/**

 * Returns the client's death count.

 *

 * @param client		Player's index.

 * @return				Death count.

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientDeaths(client);

/**

 * Returns the client's frag count.

 *

 * @param client		Player's index.

 * @return				Frag count.

 * @error				Invalid client index, client not in game, or no mod support.

 */

native GetClientFrags(client);

/**

 * Returns the client's send data rate in bytes/sec.

 *

 * @param client		Player's index.

 * @return				Data rate.

 * @error				Invalid client index, client not in game, or fake client.

 */

native GetClientDataRate(client);

/**

 * Returns if a client is timing out

 *

 * @param client		Player's index.

 * @return				True if client is timing out, false otherwise.

 * @error				Invalid client index, client not in game, or fake client.

 */

native bool:IsClientTimingOut(client);

/**

 * Returns the client's connection time in seconds.

 *

 * @param client		Player's index.

 * @return				Connection time.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientTime(client);

/**

 * Returns the client's current latency (RTT), more accurate than GetAvgLatency but jittering.

 *

 * @param client		Player's index.

 * @param flow			Traffic flowing direction.

 * @return				Latency, or -1 if network info is not available.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientLatency(client, NetFlow:flow);

/**

 * Returns the client's average packet latency in seconds.

 *

 * @param client		Player's index.

 * @param flow			Traffic flowing direction.

 * @return				Latency, or -1 if network info is not available.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientAvgLatency(client, NetFlow:flow);

/**

 * Returns the client's average packet loss, values go from 0 to 1 (for percentages).

 *

 * @param client		Player's index.

 * @param flow			Traffic flowing direction.

 * @return				Average packet loss, or -1 if network info is not available.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientAvgLoss(client, NetFlow:flow);

/**

 * Returns the client's average packet choke, values go from 0 to 1 (for percentages).

 *

 * @param client		Player's index.

 * @param flow			Traffic flowing direction.

 * @return				Average packet loss, or -1 if network info is not available.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientAvgChoke(client, NetFlow:flow);

/**

 * Returns the client's data flow in bytes/sec.

 *

 * @param client		Player's index.

 * @param flow			Traffic flowing direction.

 * @return				Data flow.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientAvgData(client, NetFlow:flow);

/**

 * Returns the client's average packet frequency in packets/sec.

 *

 * @param client		Player's index.

 * @param flow			Traffic flowing direction.

 * @return				Packet frequency.

 * @error				Invalid client index, client not in game, or fake client.

 */

native Float:GetClientAvgPackets(client, NetFlow:flow);

/**

 * Translates an userid index to the real player index.

 *

 * @param userid		Userid value.

 * @return				Client value.

 * @error				Returns 0 if invalid userid.

 */

native GetClientOfUserId(userid);

/**

 * Disconnects a client from the server as soon as the next frame starts.

 *

 * Note: Originally, KickClient() was immediate.  The delay was introduced 

 * because despite warnings, plugins were using it in ways that would crash. 

 * The new safe version can break cases that rely on immediate disconnects, 

 * but ensures that plugins do not accidentally cause crashes.

 *

 * If you need immediate disconnects, use KickClientEx().

 *

 * Note: IsClientInKickQueue() will return true before the kick occurs.

 *

 * @param client		Client index.

 * @param format		Optional formatting rules for disconnect reason.

 *                      Note that a period is automatically appended to the string by the engine.

 * @param ...			Variable number of format parameters.

 * @noreturn

 * @error				Invalid client index, or client not connected.

 */

native KickClient(client, const String:format[]="", any:...);

/**

 * Immediately disconnects a client from the server.

 *

 * Kicking clients from certain events or callbacks may cause crashes.  If in 

 * doubt, create a short (0.1 second) timer to kick the client in the next 

 * available frame.

 *

 * @param client		Client index.

 * @param format		Optional formatting rules for disconnect reason.

 *                      Note that a period is automatically appended to the string by the engine.

 * @param ...			Variable number of format parameters.

 * @noreturn

 * @error				Invalid client index, or client not connected.

 */

native KickClientEx(client, const String:format[]="", any:...);

/**

 * Changes a client's team through the mod's generic team changing function.

 * On CS:S, this will kill the player.

 *

 * @param client		Client index.

 * @param team			Mod-specific team index.

 * @noreturn

 * @error				Invalid client index, client not connected, or lack of 

 *						mod support.

 */

native ChangeClientTeam(client, team);

/**

 * Returns the clients unique serial identifier.

 *

 * @return	Serial number.

 */

native GetClientSerial(client);

/**

 * Returns the client index by its serial number.

 *

 * @return				Client index, or 0 for invalid serial.

 */

native GetClientFromSerial(serial);