#if defined _smlib_client_included
	#endinput
#endif
#define _smlib_client_included

// Defined here beacause needed in teams.inc
#define CLIENTFILTER_ALL				0		// No filtering
#define CLIENTFILTER_BOTS			( 1	<< 1  )	// Fake clients
#define CLIENTFILTER_NOBOTS			( 1	<< 2  )	// No fake clients
#define CLIENTFILTER_AUTHORIZED		( 1 << 3  ) // SteamID validated
#define CLIENTFILTER_NOTAUTHORIZED  ( 1 << 4  ) // SteamID not validated (yet)
#define CLIENTFILTER_ADMINS			( 1	<< 5  )	// Generic Admins (or higher)
#define CLIENTFILTER_NOADMINS		( 1	<< 6  )	// No generic admins
// All flags below require ingame checking (optimization)
#define CLIENTFILTER_INGAME			( 1	<< 7  )	// Ingame
#define CLIENTFILTER_INGAMEAUTH		( 1 << 8  ) // Ingame & Authorized
#define CLIENTFILTER_NOTINGAME		( 1 << 9  )	// Not ingame (currently connecting)
#define CLIENTFILTER_ALIVE			( 1	<< 10 )	// Alive
#define CLIENTFILTER_DEAD			( 1	<< 11 )	// Dead
#define CLIENTFILTER_SPECTATORS		( 1 << 12 )	// Spectators
#define CLIENTFILTER_NOSPECTATORS	( 1 << 13 )	// No Spectators
#define CLIENTFILTER_OBSERVERS		( 1 << 14 )	// Observers
#define CLIENTFILTER_NOOBSERVERS	( 1 << 15 )	// No Observers
#define CLIENTFILTER_TEAMONE		( 1 << 16 )	// First Team (Terrorists, ...)
#define CLIENTFILTER_TEAMTWO		( 1 << 17 )	// Second Team (Counter-Terrorists, ...)

#include <sourcemod>
#include <entity_prop_stocks>
#include <sdktools_engine>
#include <sdktools_trace>
#include <sdktools_voice>
#include <smlib/general>
#include <smlib/colors>
#include <smlib/edicts>
#include <smlib/math>
#include <smlib/teams>
#include <smlib/weapons>

/**
 * Very useful macro to iterate all clients
 * matching the specified flags.
 *
 * @param 1		Name of the client index variable (will be only valid in the loop).
 * @param 2		CLIENTFILTER_ flags to check.
 */
#define LOOP_CLIENTS(%1,%2) for (new %1=Client_GetNext(%2); %1 >= 1 && %1 <= MaxClients; %1=Client_GetNext(%2, ++%1))

/**
 * Macro for iterating trough all observers of a player.
 *
 * @param 1		Client Index for who to get the observers.
 * @param 2		Name of the observer client index variable (will be only valid in the loop).
 * @param 3		CLIENTFILTER_ flags to check.
 */
#define LOOP_OBSERVERS(%1,%2,%3) for (new %2=Client_GetNextObserver(%1, 1, %3); %2 >= 1 && %2 <= MaxClients; %2=Client_GetNextObserver(%1, ++%2, %3))

/**
 * Very useful macro to iterate all weapons of a client.
 *
 * @param 1		Client Index
 * @param 2		Name of the weapon index variable (will be only valid in the loop).
 * @param 3		Name of the client's weapon index variable (will be only valid in the loop).
 */
#define LOOP_CLIENTWEAPONS(%1,%2,%3) for (new %3, %2=Client_GetNextWeapon(%1, %3); %2 != -1; %2=Client_GetNextWeapon(%1, %3))

// Hud Element hiding flags (possibly outdated)
#define	HIDEHUD_WEAPONSELECTION		( 1<<0 )	// Hide ammo count & weapon selection
#define	HIDEHUD_FLASHLIGHT			( 1<<1 )
#define	HIDEHUD_ALL					( 1<<2 )
#define HIDEHUD_HEALTH				( 1<<3 )	// Hide health & armor / suit battery
#define HIDEHUD_PLAYERDEAD			( 1<<4 )	// Hide when local player's dead
#define HIDEHUD_NEEDSUIT			( 1<<5 )	// Hide when the local player doesn't have the HEV suit
#define HIDEHUD_MISCSTATUS			( 1<<6 )	// Hide miscellaneous status elements (trains, pickup history, death notices, etc)
#define HIDEHUD_CHAT				( 1<<7 )	// Hide all communication elements (saytext, voice icon, etc)
#define	HIDEHUD_CROSSHAIR			( 1<<8 )	// Hide crosshairs
#define	HIDEHUD_VEHICLE_CROSSHAIR	( 1<<9 )	// Hide vehicle crosshair
#define HIDEHUD_INVEHICLE			( 1<<10 )
#define HIDEHUD_BONUS_PROGRESS		( 1<<11 )	// Hide bonus progress display (for bonus map challenges)

/**
* Sets the Hide-Hud flags of a client
*
* @param client		Client index.
* @param flags		Flag to set, use one of the HIDEHUD_ hiding constants
* @noreturn
*/
stock Client_SetHideHud(client, flags)
{
	SetEntProp(client, Prop_Send, "m_iHideHUD", flags);
}

/**
* Checks if the specified index is a player and connected.
*
* @param entity				An entity index.
* @param checkConnected		Set to false to skip the IsClientConnected check
* @return					Returns true if the specified entity index is a player connected, false otherwise.
*/
stock bool:Client_IsValid(client, bool:checkConnected=true)
{
	if (client > 4096) {
		client = EntRefToEntIndex(client);
	}

	if (client < 1 || client > MaxClients) {
		return false;
	}

	if (checkConnected && !IsClientConnected(client)) {
		return false;
	}

	return true;
}

/**
* Checks if the specified index is a player and ingame.
*
* @param entity		An entity index.
* @return			Returns true if the specified index is a player and ingame, false otherwise.
*/
stock bool:Client_IsIngame(client)
{
	if (!Client_IsValid(client, false)) {
		return false;
	}

	return IsClientInGame(client);
}

/**
* Checks if the specified index is a player, ingame and authorized.
*
* @param entity		An entity index.
* @return			Returns true if the specified index is a player, ingame and authed, false otherwise.
*/
stock bool:Client_IsIngameAuthorized(client)
{
	if (!Client_IsIngame(client)) {
		return false;
	}

	return IsClientAuthorized(client);
}

#define MAX_STEAMAUTH_LENGTH 21

/**
* Finds a player by his SteamID
*
* @param auth			SteamID to search for
* @return				Client Index or -1
*/
stock Client_FindBySteamId(const String:auth[])
{
	new String:clientAuth[MAX_STEAMAUTH_LENGTH];
	for (new client=1; client <= MaxClients; client++) {
		if (!IsClientAuthorized(client)) {
			continue;
		}

		GetClientAuthId(client, AuthId_Steam2, clientAuth, sizeof(clientAuth));

		if (StrEqual(auth, clientAuth)) {
			return client;
		}
	}

	return -1;
}

/**
* Finds a player by his name.
* Only returns the first matching player.
*
* @param name			Name to search for.
* @param partOfName		Whether to search for the part of a name or compare the full name.
* @param caseSensitive	If true, comparison is case sensitive. If false (default), comparison is case insensitive.
* @return				Client Index or -1
*/
stock Client_FindByName(const String:name[], bool:partOfName=true, bool:caseSensitive=false)
{
	new String:clientName[MAX_NAME_LENGTH];
	for (new client=1; client <= MaxClients; client++) {
		if (!IsClientAuthorized(client)) {
			continue;
		}

		GetClientName(client, clientName, sizeof(clientName));

		if (partOfName) {
			if (StrContains(clientName, name, caseSensitive) != -1) {
				return client;
			}
		}
		else if (StrEqual(name, clientName, caseSensitive)) {
			return client;
		}
	}

	return -1;
}

// Spectator Movement modes
enum Obs_Mode
{
	OBS_MODE_NONE = 0,	// not in spectator mode
	OBS_MODE_DEATHCAM,	// special mode for death cam animation
	OBS_MODE_FREEZECAM,	// zooms to a target, and freeze-frames on them
	OBS_MODE_FIXED,		// view from a fixed camera position
	OBS_MODE_IN_EYE,	// follow a player in first person view
	OBS_MODE_CHASE,		// follow a player in third person view
	OBS_MODE_ROAMING,	// free roaming

	NUM_OBSERVER_MODES
};

// Force Camera Restrictions with mp_forcecamera
enum Obs_Allow
{
	OBS_ALLOW_ALL = 0,	// allow all modes, all targets
	OBS_ALLOW_TEAM,		// allow only own team & first person, no PIP
	OBS_ALLOW_NONE,		// don't allow any spectating after death (fixed & fade to black)

	OBS_ALLOW_NUM_MODES,
};

/**
 * Gets the client's  observer mode (Obs_Mode).
 *
 * @param client		Client Index.
 * @return				The current observer mode (ObsMode).
 */
stock Obs_Mode:Client_GetObserverMode(client)
{
	return Obs_Mode:GetEntProp(client, Prop_Send, "m_iObserverMode");
}


/**
 * Sets the client's observer mode.
 * Use a value of the Obs_Mode enum.
 * This is a rewrite of CBasePlayer::SetObserverMode().
 *
 * @param client			Client Index.
 * @param mode				New Observer mode value (Obs_Mode).
 * @param updateMoveType	Set to true (default) to allow this function updating the movetype, false otherwise.
 * @noreturn
 */
stock bool:Client_SetObserverMode(client, Obs_Mode:mode, bool:updateMoveType=true)
{
	if (mode < OBS_MODE_NONE || mode >= NUM_OBSERVER_MODES) {
		return false;
	}

	// check mp_forcecamera settings for dead players
	if (mode > OBS_MODE_FIXED && GetClientTeam(client) > TEAM_SPECTATOR)
	{
		new Handle:mp_forcecamera = FindConVar("mp_forcecamera");

		if (mp_forcecamera != INVALID_HANDLE) {
			switch (GetConVarInt(mp_forcecamera))
			{
				case OBS_ALLOW_TEAM: {
					mode = OBS_MODE_IN_EYE;
				}
				case OBS_ALLOW_NONE: {
					mode = OBS_MODE_FIXED; // don't allow anything
				}
			}
		}
	}

	new Obs_Mode:observerMode = Client_GetObserverMode(client);
	if (observerMode > OBS_MODE_DEATHCAM) {
		// remember mode if we were really spectating before
		Client_SetObserverLastMode(client, observerMode);
	}

	SetEntProp(client, Prop_Send, "m_iObserverMode", _:mode);

	switch (mode) {
		case OBS_MODE_NONE, OBS_MODE_FIXED, OBS_MODE_DEATHCAM: {
			Client_SetFOV(client, 0);	// Reset FOV

			if (updateMoveType) {
				SetEntityMoveType(client, MOVETYPE_NONE);
			}
		}
		case OBS_MODE_CHASE, OBS_MODE_IN_EYE: {
			// udpate FOV and viewmodels
			Client_SetViewOffset(client, NULL_VECTOR);

			if (updateMoveType) {
				SetEntityMoveType(client, MOVETYPE_OBSERVER);
			}
		}
		case OBS_MODE_ROAMING: {
			Client_SetFOV(client, 0);	// Reset FOV
			Client_SetViewOffset(client, NULL_VECTOR);

			if (updateMoveType) {
				SetEntityMoveType(client, MOVETYPE_OBSERVER);
			}
		}
	}

	return true;
}

/**
 * Gets the client's last oberserver mode
 *
 * @param client		Client Index.
 * @return				Last Observer mode
 */
stock Obs_Mode:Client_GetObserverLastMode(client)
{
	return Obs_Mode:GetEntProp(client, Prop_Data, "m_iObserverLastMode");
}

/**
 * Sets the client's last oberserver mode
 *
 * @param client		Client Index.
 * @param mode			Last Observer mode
 * @noreturn
 */
stock Client_SetObserverLastMode(client, Obs_Mode:mode)
{
	SetEntProp(client, Prop_Data, "m_iObserverLastMode", _:mode);
}

/**
 * Gets the client's view offset.
 * This is the position relative to the client itself.
 *
 * @param client		Client Index.
 * @param vec			Vector Buffer.
 * @noreturn
 */
stock Client_GetViewOffset(client, Float:vec[3])
{
	GetEntPropVector(client, Prop_Data, "m_vecViewOffset", vec);
}

/**
 * Sets the client's view offset.
 * This is the position relative to the client itself.
 *
 * @param client		Client Index.
 * @param vec			Vector buffer.
 * @noreturn
 */
stock Client_SetViewOffset(client, Float:vec[3])
{
	SetEntPropVector(client, Prop_Data, "m_vecViewOffset", vec);
}

/**
 * Gets the client's current observer target entity.
 *
 * @param client		Client Index.
 * @return				Observed Entity Index.
 */
stock Client_GetObserverTarget(client)
{
	return GetEntPropEnt(client, Prop_Send, "m_hObserverTarget");
}

/**
 * Sets the client's current observer target entity.
 *
 * @param client		Client Index.
 * @param entity		Observed Entity Index.
 * @param resetFOV		If to reset the client's field of view.
 * @noreturn
 */
stock Client_SetObserverTarget(client, entity, bool:resetFOV=true)
{
	SetEntPropEnt(client, Prop_Send, "m_hObserverTarget", entity);

	if (resetFOV) {
		Client_SetFOV(client, 0);
	}
}

/**
 * Gets the client's Field Of View.
 *
 * @param client		Client Index.
 * @return				Field Of View
 */
stock Client_GetFOV(client)
{
	return GetEntProp(client, Prop_Send, "m_iFOV");
}

/**
 * Sets the client's Field Of View.
 *
 * @param client		Client Index.
 * @param value			Field Of View
 * @noreturn
 */
stock Client_SetFOV(client, value)
{
	SetEntProp(client, Prop_Send, "m_iFOV", value);
}

/**
 * Checks if the client's View Model is drawn for the client.
 *
 * @param client		Client Index.
 * @return				True if the viewmodel is drawn, false otherwise.
 */
stock bool:Client_DrawViewModel(client)
{
	return bool:GetEntProp(client, Prop_Send, "m_bDrawViewmodel");
}

/**
 * Sets if to draw the client's view model for the client.
 *
 * @param client		Client Index.
 * @param drawViewModel	Set to true if to draw, false otherwise.
 * @noreturn
 */
stock Client_SetDrawViewModel(client, bool:drawViewModel)
{
	SetEntProp(client, Prop_Send, "m_bDrawViewmodel", drawViewModel);
}

/**
 * Puts the specified client into thirdperson or back to firstperson when false
 * This doesn't work correctly in all games, it works in CS:S and DOD:S and some other games.
 * Todo: Enhance this
 *
 * @param client 		Client Index.
 * @param enable		If set to true, the client will be put into thirdperson mode,
 * 						if false the client will be put in firstperson mode.
 * @noreturn
 */
stock Client_SetThirdPersonMode(client, enable=true)
{
	if (enable) {
		Client_SetObserverTarget(client, 0);
		Client_SetObserverMode(client, OBS_MODE_DEATHCAM, false);
		Client_SetDrawViewModel(client, false);
		Client_SetFOV(client, 120);
	}
	else {
		Client_SetObserverTarget(client, -1);
		Client_SetObserverMode(client, OBS_MODE_NONE, false);
		Client_SetDrawViewModel(client, true);
		Client_SetFOV(client, 90);
	}
}

/**
 * Checks if the client is in thirdperson mode
 *
 * @param client	Cient Undex
 * @return			true if the client is currently in thirdperson mode, false otherwise
 */
stock Client_IsInThirdPersonMode(client)
{
	return GetEntProp(client, Prop_Data, "m_iObserverMode");
}

#define FFADE_IN			0x0001		// Just here so we don't pass 0 into the function
#define FFADE_OUT			0x0002		// Fade out (not in)
#define FFADE_MODULATE		0x0004		// Modulate (don't blend)
#define FFADE_STAYOUT		0x0008		// ignores the duration, stays faded out until new ScreenFade message received
#define FFADE_PURGE			0x0010		// Purges all other fades, replacing them with this one

/**
 * Fades a client's screen to a specified color
 * Your adviced to read the FFADE_ Comments
 *
 * @param client		Player for which to fade the screen
 * @param duration		duration in seconds the effect stays
 * @param mode			fade mode, see FFADE_ defines
 * @param holdtime		holdtime in seconds
 * @param r				red amount
 * @param g				green amount
 * @param b				blue amount
 * @param a				transparency
 * @return				True on success, false otherwise
 */
stock bool:Client_ScreenFade(client, duration, mode, holdtime=-1, r=0, g=0, b=0, a=255, bool:reliable=true)
{
	new Handle:userMessage = StartMessageOne("Fade", client, (reliable?USERMSG_RELIABLE:0));

	if (userMessage == INVALID_HANDLE) {
		return false;
	}

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available &&
		GetUserMessageType() == UM_Protobuf) {

		new color[4];
		color[0] = r;
		color[1] = g;
		color[2] = b;
		color[3] = a;

		PbSetInt(userMessage,   "duration",   duration);
		PbSetInt(userMessage,   "hold_time",  holdtime);
		PbSetInt(userMessage,   "flags",      mode);
		PbSetColor(userMessage, "clr",        color);
	}
	else {
		BfWriteShort(userMessage,	duration);	// Fade duration
		BfWriteShort(userMessage,	holdtime);	// Fade hold time
		BfWriteShort(userMessage,	mode);		// What to do
		BfWriteByte(userMessage,	r);			// Color R
		BfWriteByte(userMessage,	g);			// Color G
		BfWriteByte(userMessage,	b);			// Color B
		BfWriteByte(userMessage,	a);			// Color Alpha
	}
	EndMessage();

	return true;
}

/**
 * This function retrieves an array that holds all clones of a client by IP check.
 * Size of CloneList has to be MaxClients at least, or MAX_PLAYERS
 *
 * @param client		Client index.
 * @param closelist		An array that holds all clones of a client.
 * @return				Returns how many clones a client has.
 */
stock Client_GetClones(client, cloneList[])
{
	new x=0;
	decl String:ip_client[16], String:ip_player[16];

	GetClientIP(client, ip_client, sizeof(client));

	for (new player=1; player <= MaxClients; player++) {

		if (IsClientInGame(player)) {
			GetClientIP(player, ip_player, sizeof(ip_player));

			if (StrEqual(ip_client, ip_player, false)) {
				cloneList[x++] = player;
			}
		}
	}

	return x;
}

/*
 * This function returns true if the client is at a ladder..
 *
 * @param client		Client index.
 * @return				Returns true if the client is on a ladder other wise false.
 */
stock bool:Client_IsOnLadder(client)
{
	new MoveType:movetype = GetEntityMoveType(client);

	if (movetype == MOVETYPE_LADDER) {
		return true;
	}
	else{
		return false;
	}
}

enum Water_Level
{
	WATER_LEVEL_NOT_IN_WATER = 0,
	WATER_LEVEL_FEET_IN_WATER,
	WATER_LEVEL_WAIST_IN_WATER,
	WATER_LEVEL_HEAD_IN_WATER
};

/*
 * This function returns how deep a client is in water.
 *
 * @param client		Client index.
 * @return				Returns 0 if not in water. 1 if feets are in water. 2 if waist is in water. 3 if head is in water.
 */
stock Water_Level:Client_GetWaterLevel(client)
{
	return Water_Level:GetEntProp(client, Prop_Send, "m_nWaterLevel");
}

/*
 * Returns how much suit sprint power a client has left in percent.
 *
 * @param client		Client index.
 * @return				returns the actual power left in percent.
 */
stock Float:Client_GetSuitSprintPower(client)
{
	return GetEntPropFloat(client, Prop_Send, "m_flSuitPower");
}

/*
 * Sets a client suit sprint power in percent.
 *
 * @param client		Client index.
 * @param power			power (0.0 to 100.0)
 * @noreturn
 */
stock Client_SetSuitSprintPower(client, Float:power)
{
	SetEntPropFloat(client, Prop_Send, "m_flSuitPower", power);
}

/*
 * Returns the client count put in the server.
 *
 * @param inGameOnly	If false connecting players are also counted.
 * @param countBots		If true bots will be counted too.
 * @return				Client count in the server.
 */
stock Client_GetCount(bool:countInGameOnly=true, bool:countFakeClients=true)
{
	new numClients = 0;

	for (new client=1; client <= MaxClients; client++) {

		if (!IsClientConnected(client)) {
			continue;
		}

		if (countInGameOnly && !IsClientInGame(client)) {
			continue;
		}

		if (!countFakeClients && IsFakeClient(client)) {
			continue;
		}

		numClients++;
	}

	return numClients;
}

/*
 * Returns the ping of a client like it is displayed in the scoreboard.
 * The weird calculation formula is taken from Valve's SDK
 * hl2sdk\game\server\util.cpp: UTIL_GetPlayerConnectionInfo()
 * The Scoreboard uses the goldSource corrected Ping, the net_graph doesn't
 * For Fake Clients 0 is returned.
 *
 * @param client		Client index
 * @param goldSource	If true, get the ping as displayed in the player's scoreboard, false returns the net_graph variant.
 * @return				Client's fake ping or 0 for fake clients
 */
stock Client_GetFakePing(client, bool:goldSource=true)
{
	if (IsFakeClient(client)) {
		return 0;
	}

	new ping;
	new Float:latency = GetClientLatency(client, NetFlow_Outgoing); // in seconds

	// that should be the correct latency, we assume that cmdrate is higher
	// then updaterate, what is the case for default settings
	decl String:cl_cmdrate[4];
	GetClientInfo(client, "cl_cmdrate", cl_cmdrate, sizeof(cl_cmdrate));

	new Float:tickRate = GetTickInterval();
	latency -= (0.5 / StringToInt(cl_cmdrate)) + TICKS_TO_TIME(1.0); // correct latency

	if (goldSource) {
		// in GoldSrc we had a different, not fixed tickrate. so we have to adjust
		// Source pings by half a tick to match the old GoldSrc pings.
		latency -= tickRate * 0.5;
	}

	ping = RoundFloat(latency * 1000.0); // as msecs
	ping = Math_Clamp(ping, 5, 1000); // set bounds, dont show pings under 5 msecs

	return ping;
}

/**
 * Searches for the closest client in relation to the given client.
 *
 * @param client		Client index
 * @return				The closest client or -1
 */
stock Client_GetClosestToClient(client)
{
	return Edict_GetClosestToEdict(client, true);
}

/**
 * Gets the name of the last place (if set by the game)
 *
 * @param entity			Entity index.
 * @param buffer			String buffer
 * @param size				Size of the String buffer
 * @noreturn
 */
stock Client_GetLastPlaceName(client, String:buffer[], size)
{
	GetEntPropString(client, Prop_Send, "m_szLastPlaceName", buffer, size);
}

/**
 * Returns the client's Score.
 *
 * @param client			Client's index.
 * @return					Score.
 */
stock Client_GetScore(client)
{
	return GetClientFrags(client);
}

/**
 * Sets the client's Score.
 *
 * @param client			Client's index.
 * @param value				Score.
 * @noreturn
 */
stock Client_SetScore(client, value)
{
	SetEntProp(client, Prop_Data, "m_iFrags", value);
}

/**
 * Returns the client's Death count
 *
 * @param client			Client's index.
 * @return					Death count
 */
stock Client_GetDeaths(client)
{
	return GetEntProp(client, Prop_Data, "m_iDeaths");
}

/**
 * Sets the client's Death count.
 *
 * @param client			Client's index.
 * @param value				Death count
 * @noreturn
 */
stock Client_SetDeaths(client, value)
{
	SetEntProp(client, Prop_Data, "m_iDeaths", value);
}

/**
 * Returns the client's Armor
 *
 * @param client			Client's index.
 * @return					Armor value
 */
stock Client_GetArmor(client)
{
	return GetEntProp(client, Prop_Data, "m_ArmorValue");
}

/**
 * Sets the client's Armor.
 *
 * @param client			Client's index.
 * @param value				Armor value
 * @noreturn
 */
stock Client_SetArmor(client, value)
{
	SetEntProp(client, Prop_Data, "m_ArmorValue", value);
}

/**
 * Returns the client's Suitpower
 *
 * @param client			Client's index.
 * @return					Suitpower
 */
stock Float:Client_GetSuitPower(client)
{
	return Float:GetEntPropFloat(client, Prop_Data, "m_flSuitPower");
}

/**
 * Sets the client's Suitpower
 *
 * @param client			Client's index.
 * @param value				Suitpower
 * @noreturn
 */
stock Client_SetSuitPower(client, Float:value)
{
	SetEntPropFloat(client, Prop_Data, "m_flSuitPower", value);
}

// suit usage bits
#define bits_SUIT_DEVICE_SPRINT		0x00000001
#define bits_SUIT_DEVICE_FLASHLIGHT	0x00000002
#define bits_SUIT_DEVICE_BREATHER	0x00000004
#define MAX_SUIT_DEVICES			3

/**
 * Returns the client's active devices (Max MAX_SUIT_DEVICES)
 * The return is a bitwise value with bits_SUIT_DEVICE_SPRINT,
 * bits_SUIT_DEVICE_FLASHLIGHT and/or bits_SUIT_DEVICE_BREATHER set.
 *
 * @param client			Client's index.
 * @return					The active devices (bitwise value)
 */
stock Client_GetActiveDevices(client)
{
	return GetEntProp(client, Prop_Send, "m_bitsActiveDevices");
}

/**
 * Returns the time when the client is allowed to spray
 * a decal again.
 *
 * @param client			Client's index.
 * @return					Next decal time
 */
stock Float:Client_GetNextDecalTime(client)
{
	return GetEntPropFloat(client, Prop_Data, "m_flNextDecalTime");
}

/**
 * Returns whether the client is allowed to spray a decal or not.
 *
 * @param client			Client's index.
 * @return					True if he is allowed to spray a decal, false otherwise
 */
stock bool:Client_CanSprayDecal(client)
{
	return Client_GetNextDecalTime(client) <= GetGameTime();
}

/**
 * Returns the vehicle the client is in, if the client
 * isn't in a vehicle, -1 is returned.
 *
 * @param client			Client's index.
 * @return					Vehicle index, -1 if the client isn't in a vehicle.
 */
stock Client_GetVehicle(client)
{
	new m_hVehicle = GetEntPropEnt(client, Prop_Send, "m_hVehicle");

	return m_hVehicle;
}

/**
 * Returns whether the client is in a vehicle or not.
 *
 * @param client			Client's index.
 * @return					True if he is in a vehicle, false otherwise
 */
stock bool:Client_IsInVehicle(client)
{
	return !(Client_GetVehicle(client) == -1);
}

/**
 * Removes all decals for a client
 *
 * @param client			Client's index.
 * @noreturn
 */
stock Client_RemoveAllDecals(client)
{
	ClientCommand(client, "r_cleardecals");
}

/**
 * Let's the client exit the vehicle
 *
 * @param vehicle			Client index.
 * @return					True on success, false otherwise.
 */
stock bool:Client_ExitVehicle(client)
{
	new vehicle = Client_GetVehicle(client);

	if (vehicle == -1) {
		return false;
	}

	return AcceptEntityInput(vehicle, "ExitVehicle");
}

/**
 * Plays a soundfile as if the player is using voicecomm for a single client.
 * The voiceindicator is shown on the right, as if the players is talking.
 * Thanks to Peace-Maker for the function.
 *
 * @param client		For whom to play the sound.
 * @param emitter		Player/Entity the voice stream comes from.
 * @param soundfile		Path to the soundfile relative to the sound folder.
 * @param length        Length in seconds how long the hud "voiceindicator" is shown.
 * @param pitch			The pitch of the audiofile.
 * @return				True on success, false on failure.
 */
stock bool:Client_RawAudio(client, const emitter, const String:soundfile[], Float:length = 0.0, pitch = 100)
{
	new Handle:message = StartMessageOne("RawAudio", client);

	if (message == INVALID_HANDLE) {
		return false;
	}

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
		&& GetUserMessageType() == UM_Protobuf) {

		PbSetInt(message,    "pitch",          pitch);
		PbSetInt(message,    "entidx",         emitter);
		PbSetFloat(message,  "duration",       length );
		PbSetString(message, "voice_filename", soundfile);
	}
	else {
		BfWriteByte(message,	pitch);
		BfWriteByte(message,	emitter);
		BfWriteFloat(message,	length);
		BfWriteString(message,	soundfile);
	}
	EndMessage();

	return true;
}

/**
 * Plays a soundfile as if the player is using voicecomm for all players.
 * The voiceindicator is shown on the right, as if the players is talking.
 * Thanks to Peace-Maker for the function.
 *
 * @param emitter		Player/Entity the voice stream comes from.
 * @param soundfile		Path to the soundfile relative to the sound folder.
 * @param length        Length in seconds how long the hud "voiceindicator" is shown.
 * @param pitch			The pitch of the audiofile.
 * @return				True on success, false on failure.
 */
stock bool:Client_RawAudioToAll(const emitter, const String:soundfile[], Float:length = 0.0, pitch = 100)
{
	new Handle:message = StartMessageAll("RawAudio");

	if (message == INVALID_HANDLE) {
		return false;
	}

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
		&& GetUserMessageType() == UM_Protobuf) {

		PbSetInt(message, "pitch", pitch);
		PbSetInt(message, "entidx", emitter);
		PbSetFloat(message, "duration", length);
		PbSetString(message, "voice_filename", soundfile);
	}
	else {
		BfWriteByte(message,	pitch);
		BfWriteByte(message,	emitter);
		BfWriteFloat(message,	length);
		BfWriteString(message,	soundfile);
	}
	EndMessage();

	return true;
}

/**
 * Sets an Impulse value for a client (eg: "impulse 100" for flashlight, value would be 100).
 * See: http://developer.valvesoftware.com/wiki/Impulse
 *
 * @param client		Client Index
 * @param value			The impulse command value.
 * @return				True on success, false on failure.
 */
stock Client_Impulse(client, value)
{
	SetEntProp(client, Prop_Data, "m_nImpulse", value);
}

/**
 * Gets the offset for a client's weapon list (m_hMyWeapons).
 * The offset will saved globally for optimization.
 *
 * @param client		Client Index.
 * @return				Weapon list offset or -1 on failure.
 */
stock Client_GetWeaponsOffset(client)
{
	static offset = -1;

	if (offset == -1) {
		offset = FindDataMapInfo(client, "m_hMyWeapons");
	}

	return offset;
}

/**
 * Gets the current/active weapon of a client
 *
 * @param client		Client Index.
 * @return				Weapon Index or INVALID_ENT_REFERENCE if the client has no active weapon.
 */
stock Client_GetActiveWeapon(client)
{
	new weapon =  GetEntPropEnt(client, Prop_Data, "m_hActiveWeapon");

	if (!Entity_IsValid(weapon)) {
		return INVALID_ENT_REFERENCE;
	}

	return weapon;
}

/**
 * Gets the classname and entity index of the current/active weapon of a client.
 *
 * @param client		Client Index.
 * @param buffer		String Buffer to store the weapon's classname.
 * @param size			Max size of String: buffer.
 * @return				Weapon Entity Index on success or INVALID_ENT_REFERENCE otherwise
 */
stock Client_GetActiveWeaponName(client, String:buffer[], size)
{
	new weapon = Client_GetActiveWeapon(client);

	if (weapon == INVALID_ENT_REFERENCE) {
		buffer[0] = '\0';
		return INVALID_ENT_REFERENCE;
	}

	Entity_GetClassName(weapon, buffer, size);

	return weapon;
}

/**
 * Changes the active/current weapon of a player by Index.
 * Note: No changing animation will be played !
 *
 * @param client		Client Index.
 * @param weapon		Index of a valid weapon.
 * @noreturn
 */
stock Client_SetActiveWeapon(client, weapon)
{
	SetEntPropEnt(client, Prop_Data, "m_hActiveWeapon", weapon);
	ChangeEdictState(client, FindDataMapInfo(client, "m_hActiveWeapon"));
}

/**
 * Changes the active weapon the client is holding.
 * Note: No changing animation will be played !
 *
 * @param client		Client Index.
 * @param className		Weapon Classname.
 * @return				True on success, false on failure.
 */
stock bool:Client_ChangeWeapon(client, const String:className[])
{
	new weapon = Client_GetWeapon(client, className);

	if (weapon == INVALID_ENT_REFERENCE) {
		return false;
	}

	Client_SetActiveWeapon(client,weapon);

	return true;
}

/**
 * Changes the active weapon to the last.
 * If the last active weapon can't be found, the default weapon is taken.
 * If the default weapon can't be found, the first weapon in the list is taken.
 * If the first weapon can't be found, INVALID_ENT_REFERENCEE is returned.
 *
 * @param client 		Client Index.
 * @return				Entity Index or, INVALID_ENT_REFERENCE.
 */
stock Client_ChangeToLastWeapon(client)
{
	new weapon = Client_GetLastActiveWeapon(client);

	if (weapon == INVALID_ENT_REFERENCE) {
		weapon = Client_GetDefaultWeapon(client);

		if (weapon == INVALID_ENT_REFERENCE) {
			weapon = Client_GetFirstWeapon(client);

			if (weapon == INVALID_ENT_REFERENCE) {
				return INVALID_ENT_REFERENCE;
			}
		}
	}

	Client_SetActiveWeapon(client, weapon);

	return weapon;
}

/**
 * Gets the last active weapon of a client.
 *
 * @param client		Client Index.
 * @return				Entity Index of the weapon on success, INVALID_ENT_REFERENCE on failure.
 */
stock Client_GetLastActiveWeapon(client)
{
	new weapon = GetEntPropEnt(client, Prop_Data, "m_hLastWeapon");

	if (!Entity_IsValid(weapon)) {
		return INVALID_ENT_REFERENCE;
	}

	return weapon;
}

/**
 * Gets the classname of the last active weapon of a client.
 *
 * @param client		Client Index.
 * @param buffer		Buffer to store the weapon classname.
 * @param size			Max size of String: buffer.
 * @return				True on success, false on failure.
 */
stock bool:Client_GetLastActiveWeaponName(client, String:buffer[], size)
{
	new weapon = Client_GetLastActiveWeapon(client);

	if (weapon == INVALID_ENT_REFERENCE) {
		buffer[0] = '\0';
		return false;
	}

	Entity_GetClassName(weapon, buffer, size);

	return true;
}

/**
 * Sets the last active weapon of a client.
 *
 * @param client		Client Index.
 * @param weapon		Entity Index of a weapon.
 * @noreturn
 */
stock Client_SetLastActiveWeapon(client, weapon)
{
	SetEntPropEnt(client, Prop_Data, "m_hLastWeapon", weapon);
	ChangeEdictState(client, FindDataMapInfo(client, "m_hLastWeapon"));
}

/**
 * Equips (attaches) a weapon to a client.
 *
 * @param client		Client Index.
 * @param weapon		Entity Index of the weapon.
 * @param switchTo		If true, the client will switch to that weapon (make it active).
 * @noreturn
 */
stock Client_EquipWeapon(client, weapon, bool:switchTo=false)
{
	EquipPlayerWeapon(client, weapon);

	if (switchTo) {
		Client_SetActiveWeapon(client, weapon);
	}
}

/**
 * Savly detaches a clients weapon, to remove it as example.
 * The client will select his last weapon when detached.
 *
 * @param client 		Client Index.
 * @param weapon		Entity Index of the weapon, you'd like to detach.
 * @return				True on success, false otherwise.
 */
stock bool:Client_DetachWeapon(client, weapon)
{
	if (!RemovePlayerItem(client, weapon)) {
		return false;
	}

	if (Client_GetActiveWeapon(client) == INVALID_ENT_REFERENCE) {
		Client_ChangeToLastWeapon(client);
	}

	return true;
}

/**
 * Gives a client a weapon.
 *
 * @param client		Client Index.
 * @param className		Weapon Classname String.
 * @param switchTo		If set to true, the client will switch the active weapon to the new weapon.
 * @return				Entity Index of the given weapon on success, INVALID_ENT_REFERENCE on failure.
 */
stock Client_GiveWeapon(client, const String:className[], bool:switchTo=true)
{
	new weapon = Client_GetWeapon(client, className);

	if (weapon == INVALID_ENT_REFERENCE) {
		weapon = Weapon_CreateForOwner(client, className);

		if (weapon == INVALID_ENT_REFERENCE) {
			return INVALID_ENT_REFERENCE;
		}
	}

	Client_EquipWeapon(client, weapon, switchTo);

	return weapon;
}

/**
 * Gives a client a weapon and ammo for that weapon.
 *
 * @param client		Client Index.
 * @param className		Weapon Classname String.
 * @param switchTo		If set to true, the client will switch the active weapon to the new weapon.
 * @param primaryAmmo	Primary ammo stock value from the client, if -1 the value is untouched.
 * @param secondaryAmmo	Secondary ammo stock value from the client, if -1 the value is untouched.
 * @param primaryClip	Primary ammo value in the weapon clip, if -1 the value is untouched.
 * @param secondaryClip	Secondary ammo value in the weapon clip, if -1 the value is untouched.
 * @return				Entity Index of the given weapon on success, INVALID_ENT_REFERENCE on failure.
 */
stock Client_GiveWeaponAndAmmo(client, const String:className[], bool:switchTo=true, primaryAmmo=-1, secondaryAmmo=-1, primaryClip=-1, secondaryClip=-1)
{
	new weapon = Client_GiveWeapon(client, className, switchTo);

	if (weapon == INVALID_ENT_REFERENCE) {
		return INVALID_ENT_REFERENCE;
	}

	if (primaryClip != -1) {
		Weapon_SetPrimaryClip(weapon, primaryClip);
	}

	if (secondaryClip != -1) {
		Weapon_SetSecondaryClip(weapon, secondaryClip);
	}

	Client_SetWeaponPlayerAmmoEx(client, weapon, primaryAmmo, secondaryAmmo);

	return weapon;
}

/**
 * Removes a weapon from a client.
 *
 * @param client 		Client Index.
 * @param className		Weapon Classname String.
 * @param firstOnly		If false it loops trough the whole weapon list and deletes all weapons that match the specified classname.
 * @param clearAmmo		If true, the ammo the client carries for that weapon will be set to 0 (primary and secondary).
 * @return				True on success, false otherwise.
 */
stock bool:Client_RemoveWeapon(client, const String:className[], bool:firstOnly=true, bool:clearAmmo=false)
{
	new offset = Client_GetWeaponsOffset(client) - 4;

	for (new i=0; i < MAX_WEAPONS; i++) {
		offset += 4;

		new weapon = GetEntDataEnt2(client, offset);

		if (!Weapon_IsValid(weapon)) {
			continue;
		}

		if (!Entity_ClassNameMatches(weapon, className)) {
			continue;
		}

		if (clearAmmo) {
			Client_SetWeaponPlayerAmmoEx(client, weapon, 0, 0);
		}

		if (Client_GetActiveWeapon(client) == weapon) {
			Client_ChangeToLastWeapon(client);
		}

		if (RemovePlayerItem(client, weapon)) {
			Entity_Kill(weapon);
		}

		if (firstOnly) {
			return true;
		}
	}

	return false;
}

/**
 * Removes all weapons of a client.
 * You can specify a weapon it shouldn't remove and if to
 * clear the player's ammo for a weapon when it gets removed.
 *
 * @param client 		Client Index.
 * @param exclude		If not empty, this weapon won't be removed from the client.
 * @param clearAmmo		If true, the ammo the player carries for all removed weapons are set to 0 (primary and secondary).
 * @return				Number of removed weapons.
 */
stock Client_RemoveAllWeapons(client, const String:exclude[]="", bool:clearAmmo=false)
{
	new offset = Client_GetWeaponsOffset(client) - 4;

	new numWeaponsRemoved = 0;
	for (new i=0; i < MAX_WEAPONS; i++) {
		offset += 4;

		new weapon = GetEntDataEnt2(client, offset);

		if (!Weapon_IsValid(weapon)) {
			continue;
		}

		if (exclude[0] != '\0' && Entity_ClassNameMatches(weapon, exclude)) {
			Client_SetActiveWeapon(client, weapon);
			continue;
		}

		if (clearAmmo) {
			Client_SetWeaponPlayerAmmoEx(client, weapon, 0, 0);
		}

		if (RemovePlayerItem(client, weapon)) {
			Entity_Kill(weapon);
		}

		numWeaponsRemoved++;
	}

	return numWeaponsRemoved;
}

/**
 * Checks if a client has a specific weapon.
 *
 * @param client 		Client Index.
 * @param className		Weapon Classname.
 * @return				True if client has the weapon, otherwise false.
 */
stock bool:Client_HasWeapon(client, const String:className[])
{
	new weapon = Client_GetWeapon(client, className);

	return (weapon != INVALID_ENT_REFERENCE);
}

/**
 * Gets the weapon of a client by the weapon's classname.
 *
 * @param client 		Client Index.
 * @param className		Classname of the weapon.
 * @return				Entity index on success or INVALID_ENT_REFERENCE.
 */
stock Client_GetWeapon(client, const String:className[])
{
	new offset = Client_GetWeaponsOffset(client) - 4;
	new weapon = INVALID_ENT_REFERENCE;
	for (new i=0; i < MAX_WEAPONS; i++) {
		offset += 4;

		weapon = GetEntDataEnt2(client, offset);

		if (!Weapon_IsValid(weapon)) {
			continue;
		}

		if (Entity_ClassNameMatches(weapon, className)) {
			return weapon;
		}
	}

	return INVALID_ENT_REFERENCE;
}

/**
 * Gets the weapon of a client by slot number.
 * Note: This is incompatible to games that have multiple
 * weapons in one slot (eg.: hl2dm).
 *
 * @param client 		Client Index.
 * @param slot			Slot Index.
 * @return				Entity index on success or INVALID_ENT_REFERENCE.
 */
stock Client_GetWeaponBySlot(client, slot)
{
	return GetPlayerWeaponSlot(client, slot);
}

/**
 * Gets the clients default weapon (Entity Index).
 *
 * @param client 		Client Index.
 * @return				Entity Index on success, INVALID_ENT_REFERENCE on failure.
 */
stock Client_GetDefaultWeapon(client)
{
	decl String:weaponName[MAX_WEAPON_STRING];
	if (Client_GetDefaultWeaponName(client, weaponName, sizeof(weaponName))) {
		return INVALID_ENT_REFERENCE;
	}

	return Client_GetWeapon(client, weaponName);
}

/**
 * Gets the clients default weapon (classname).
 * This function doesn't work in all games (maybe only works in hl2dm).
 * It will return an empty string if cl_defaultweapon doesn't exist.
 *
 * @param client 		Client Index.
 * @param buffer		Buffer to store the default weapon's classname.
 * @param size			Max size of string: buffer.
 * @return				True on success, false otherwise.
 */
stock bool:Client_GetDefaultWeaponName(client, String:buffer[], size)
{
	if (!GetClientInfo(client, "cl_defaultweapon", buffer, size)) {
		buffer[0] = '\0';
		return false;
	}

	return true;
}

/**
 * Gets the first weapon of the client's weapon list (m_hMyWeapons).
 * Note: This has nothing to do with weapon slots.
 *
 * @param client 		Client Index.
 * @return				Entity Index of the weapon or INVALID_ENT_REFERENCE.
 */
stock Client_GetFirstWeapon(client)
{
	new offset = Client_GetWeaponsOffset(client) - 4;

	for (new i=0; i < MAX_WEAPONS; i++) {
		offset += 4;

		new weapon = GetEntDataEnt2(client, offset);

		if (!Weapon_IsValid(weapon)) {
			continue;
		}

		return weapon;
	}

	return INVALID_ENT_REFERENCE;
}

/**
 * Gets the number of weapons a client has.
 *
 * @param client 		Client Index.
 * @return				Number of weapons.
 */
stock Client_GetWeaponCount(client)
{
	new numWeapons = 0;

	new offset = Client_GetWeaponsOffset(client) - 4;

	for (new i=0; i < MAX_WEAPONS; i++) {
		offset += 4;

		new weapon = GetEntDataEnt2(client, offset);

		if (!Weapon_IsValid(weapon)) {
			continue;
		}

		numWeapons++;
	}

	return numWeapons;
}

/**
 * Checks whether the client is currently reloading his active weapon.
 *
 * @param client 		Client Index.
 * @return				True if client is reloading, false otherwise.
 */
stock bool:Client_IsReloading(client)
{
	new weapon = Client_GetActiveWeapon(client);

	if (weapon == INVALID_ENT_REFERENCE) {
		return false;
	}

	return Weapon_IsReloading(weapon);
}

/**
 * Sets the primary and secondary clip value of a weapon.
 *
 * @param client		Client Index.
 * @param classname		Classname of a weapon.
 * @param primaryClip	Primary ammo value in the weapon clip, if -1 the value is untouched.
 * @param secondaryClip	Secondary ammo value in the weapon clip, if -1 the value is untouched.
 * @return				True on success, false on failure.
 */
stock bool:Client_SetWeaponClipAmmo(client, const String:className[], primaryClip=-1, secondoaryClip=-1)
{
	new weapon = Client_GetWeapon(client, className);

	if (weapon == INVALID_ENT_REFERENCE) {
		return false;
	}

	if (primaryClip != -1) {
		Weapon_SetPrimaryClip(weapon, primaryClip);
	}

	if (secondoaryClip != -1) {
		Weapon_SetSecondaryClip(weapon, primaryClip);
	}

	return true;
}

/**
 * Gets the primary and secondary ammo the player carries for a specific weapon classname.
 *
 * @param client		Client Index.
 * @param classname		Classname of a weapon.
 * @param primaryAmmo	Primary ammo stock from the client, if -1 the value is untouched.
 * @param secondaryAmmo	Secondary ammo stock from the client, if -1 the value is untouched.
 * @return				True on success, false on failure.
 */
stock bool:Client_GetWeaponPlayerAmmo(client, const String:className[], &primaryAmmo=-1, &secondaryAmmo=-1)
{
	new weapon = Client_GetWeapon(client, className);

	if (weapon == INVALID_ENT_REFERENCE) {
		return false;
	}

	new offset_ammo = FindDataMapInfo(client, "m_iAmmo");

	if (primaryAmmo != -1) {
		new offset = offset_ammo + (Weapon_GetPrimaryAmmoType(weapon) * 4);
		primaryAmmo = GetEntData(client, offset);
	}

	if (secondaryAmmo != -1) {
		new offset = offset_ammo + (Weapon_GetSecondaryAmmoType(weapon) * 4);
		secondaryAmmo = GetEntData(client, offset);
	}

	return true;
}

/**
 * Gets the primary and secondary ammo the player carries for a specific weapon index.
 *
 * @param client		Client Index.
 * @param weapon		Weapon Entity Index.
 * @param primaryAmmo	Primary ammo stock value from the client, if -1 the value is untouched.
 * @param secondaryAmmo	Secondary ammo stock value from the client, if -1 the value is untouched.
 * @noreturn
 */
stock Client_GetWeaponPlayerAmmoEx(client, weapon, &primaryAmmo=-1, &secondaryAmmo=-1)
{
	new offset_ammo = FindDataMapInfo(client, "m_iAmmo");

	if (primaryAmmo != -1) {
		new offset = offset_ammo + (Weapon_GetPrimaryAmmoType(weapon) * 4);
		primaryAmmo = GetEntData(client, offset);
	}

	if (secondaryAmmo != -1) {
		new offset = offset_ammo + (Weapon_GetSecondaryAmmoType(weapon) * 4);
		secondaryAmmo = GetEntData(client, offset);
	}
}

/**
 * Sets the primary and secondary ammo the player carries for a specific weapon classname.
 *
 * @param client		Client Index.
 * @param classname		Weapon Classname String.
 * @param primaryAmmo	Primary ammo stock from the client, if -1 the value is untouched.
 * @param secondaryAmmo	Secondary ammo stock from the client, if -1 the value is untouched.
 * @return				True on success, false on failure.
 */
stock bool:Client_SetWeaponPlayerAmmo(client, const String:className[], primaryAmmo=-1, secondaryAmmo=-1)
{
	new weapon = Client_GetWeapon(client, className);

	if (weapon == INVALID_ENT_REFERENCE) {
		return false;
	}

	Client_SetWeaponPlayerAmmoEx(client, weapon, primaryAmmo, secondaryAmmo);

	return true;
}

/**
 * Sets the primary and secondary ammo the player carries for a specific weapon index.
 *
 * @param client		Client Index.
 * @param weapon		Weapon Entity Index.
 * @param primaryAmmo	Primary ammo stock value from the client, if -1 the value is untouched.
 * @param secondaryAmmo	Secondary ammo stock value from the client, if -1 the value is untouched.
 * @noreturn
 */
stock Client_SetWeaponPlayerAmmoEx(client, weapon, primaryAmmo=-1, secondaryAmmo=-1)
{
	new offset_ammo = FindDataMapInfo(client, "m_iAmmo");

	if (primaryAmmo != -1) {
		new offset = offset_ammo + (Weapon_GetPrimaryAmmoType(weapon) * 4);
		SetEntData(client, offset, primaryAmmo, 4, true);
	}

	if (secondaryAmmo != -1) {
		new offset = offset_ammo + (Weapon_GetSecondaryAmmoType(weapon) * 4);
		SetEntData(client, offset, secondaryAmmo, 4, true);
	}
}

/**
 * Sets the value from primary and secondary ammo stock, of a client.
 *
 * @param client		Client Index.
 * @param className		Classname of a weapon.
 * @param primaryAmmo	Primary ammo stock value from the client, if -1 the value is untouched.
 * @param secondaryAmmo	Secondary ammo stock value from the client, if -1 the value is untouched.
 * @param primaryClip	Primary ammo value in the weapon clip, if -1 the value is untouched.
 * @param secondaryClip	Secondary ammo value in the weapon clip, if -1 the value is untouched.
 * @return				Entity Index of the given weapon on success, INVALID_ENT_REFERENCE on failure.
 */
stock Client_SetWeaponAmmo(client, const String:className[], primaryAmmo=-1, secondaryAmmo=-1, primaryClip=-1, secondaryClip=-1)
{
	new weapon = Client_GetWeapon(client, className);

	if (weapon == INVALID_ENT_REFERENCE) {
		return false;
	}

	if (primaryClip != -1) {
		Weapon_SetPrimaryClip(weapon, primaryClip);
	}
	if (secondaryClip != -1) {
		Weapon_SetSecondaryClip(weapon, secondaryClip);
	}
	Client_SetWeaponPlayerAmmoEx(client, weapon, primaryAmmo, secondaryAmmo);

	return true;
}

/**
 * Gets the next weapon of a client, starting at start.
 *
 * @param client		Client Index (must be a valid client ingame).
 * @param index			Reference to an index variable, will contain the index of the next weapon to check.
 * @return				Weapon Index or -1 if no more weapons are found.
 */
stock Client_GetNextWeapon(client, &index = 0)
{
	new offset = Client_GetWeaponsOffset(client) + (index * 4);

	new weapon;
	while (index < MAX_WEAPONS) {
		index++;

		weapon = GetEntDataEnt2(client, offset);

		if (Weapon_IsValid(weapon)) {
			return weapon;
		}

		offset += 4;
	}

	return -1;
}

/**
 * Prints white text to the bottom center of the screen
 * for one client. Does not work in all games.
 * Line Breaks can be done with "\n".
 *
 * @param client		Client Index.
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @return				True on success, false if this usermessage doesn't exist.
 */
stock bool:Client_PrintHintText(client, const String:format[], any:...)
{
	new Handle:userMessage = StartMessageOne("HintText", client);

	if (userMessage == INVALID_HANDLE) {
		return false;
	}

	decl String:buffer[254];

	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 3);


	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
		&& GetUserMessageType() == UM_Protobuf) {

		PbSetString(userMessage, "text", buffer);
	}
	else {
		BfWriteByte(userMessage, 1);
		BfWriteString(userMessage, buffer);
	}

	EndMessage();

	return true;
}

/**
 * Prints white text to the bottom center of the screen
 * for all clients. Does not work in all games.
 * Line Breaks can be done with "\n".
 *
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintHintTextToAll(const String:format[], any:...)
{
	decl String:buffer[254];

	for (new client=1; client <= MaxClients; client++) {

		if (!IsClientInGame(client)) {
			continue;
		}

		SetGlobalTransTarget(client);
		VFormat(buffer, sizeof(buffer), format, 2);
		Client_PrintHintText(client, buffer);
	}
}

/**
 * Prints white text to the right-center side of the screen
 * for one client. Does not work in all games.
 * Line Breaks can be done with "\n".
 *
 * @param client		Client Index.
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @return				True on success, false if this usermessage doesn't exist.
 */
stock bool:Client_PrintKeyHintText(client, const String:format[], any:...)
{
	new Handle:userMessage = StartMessageOne("KeyHintText", client);

	if (userMessage == INVALID_HANDLE) {
		return false;
	}

	decl String:buffer[254];

	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 3);

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
		&& GetUserMessageType() == UM_Protobuf) {

		PbAddString(userMessage, "hints", buffer);
	}
	else {
		BfWriteByte(userMessage, 1);
		BfWriteString(userMessage, buffer);
	}

	EndMessage();

	return true;
}

/**
 * Prints white text to the right-center side of the screen
 * for all clients. Does not work in all games.
 * Line Breaks can be done with "\n".
 *
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintKeyHintTextToAll(const String:format[], any:...)
{
	decl String:buffer[254];

	for (new client=1; client <= MaxClients; client++) {

		if (!IsClientInGame(client)) {
			continue;
		}

		SetGlobalTransTarget(client);
		VFormat(buffer, sizeof(buffer), format, 2);
		Client_PrintKeyHintText(client, buffer);
	}
}

/**
 * Prints a reliable raw chat message to a client in the chat area.
 * If the client == 0, the message will printed to server console.
 *
 * @param client		Client Index.
 * @param message		String Message.
 * @param subject		Client Index/Subject (normally used for teamcolors)
 * @param isChat		Tells the game to handle the chat as normal (false) or chat message (true, plays a sound), only works if SayText2 is supported.
 * @noreturn
 */
stock Client_PrintToChatRaw(client, const String:message[], subject=0, bool:isChat=false)
{
	if (client == 0) {
		decl String:buffer[253];
		Color_StripFromChatText(message, buffer, sizeof(buffer));
		PrintToServer(buffer);
		return;
	}

	static sayText2_supported	= true;
	static sayText2_checked		= false;

	if (!sayText2_checked) {

		if (GetUserMessageId("SayText2") == INVALID_MESSAGE_ID) {
			sayText2_supported = false;
		}

		sayText2_checked = true;
	}

	new Handle:userMessage = INVALID_HANDLE;

	if (sayText2_supported) {
		userMessage = StartMessageOne("SayText2", client, USERMSG_RELIABLE);

		if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
			&& GetUserMessageType() == UM_Protobuf) {

			PbSetInt(userMessage,    "ent_idx",  subject);
			PbSetBool(userMessage,   "chat",     isChat);
			PbSetString(userMessage, "msg_name", message);

			// psychonic: Furthermore, some usermessages with repeated field,
			// such as the commonly-used SayText2, expected an undocumented
			// specific number of values added, else the client will crash when receiving.
			PbAddString(userMessage, "params", "");
			PbAddString(userMessage, "params", "");
			PbAddString(userMessage, "params", "");
			PbAddString(userMessage, "params", "");
		}
		else {
			BfWriteByte(userMessage		, subject);
			BfWriteByte(userMessage		, isChat);
			BfWriteString(userMessage	, message);
		}
	}
	else {
		userMessage = StartMessageOne("SayText", client, USERMSG_RELIABLE);

		if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
			&& GetUserMessageType() == UM_Protobuf) {

			PbSetInt(userMessage, "ent_idx", subject);
			PbSetString(userMessage, "text", message);
			PbSetBool(userMessage, "chat", isChat);
		}
		else {
			BfWriteByte(userMessage		, subject);
			BfWriteString(userMessage	, message);
			// For DoD:S nickname coloring
			BfWriteByte(userMessage		, -1);
		}
	}

	EndMessage();
}

/**
 * Prints a reliable chat message to one client in the chat area.
 * Allows up to 253 Characters (including \0) to be printed.
 * Supports chat color tags (see: colors.inc).
 *
 * @param client		Client Index.
 * @param isChat		Tells the game to handle the chat as normal (false) or chat message (true, plays a sound), only works if SayText2 is supported.
 * @param format		Formatting rules String.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintToChat(client, bool:isChat, const String:format[], any:...)
{
	decl
		String:buffer[512],
		String:buffer2[253];

	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 4);
	new subject = Color_ParseChatText(buffer, buffer2, sizeof(buffer2));

	Client_PrintToChatRaw(client, buffer2, subject, isChat);

	Color_ChatClearSubject();
}

static printToChat_excludeclient = -1;

/**
 * Exclude a client from the next call to a Client_PrintToChat function.
 *
 * @param client		Client Index.
 * @noreturn
 */
stock Client_PrintToChatExclude(client)
{
	printToChat_excludeclient = client;
}

/**
 * Prints a reliable chat message to all clients in the chat area.
 * Allows up to 253 Characters (including \0) to be printed.
 * Supports chat color tags (see: colors.inc).
 *
 * @param isChat		Tells the game to handle the chat as normal (false) or chat message (true, plays a sound), only works if SayText2 is supported.
 * @param format		Formatting rules String.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintToChatAll(bool:isChat, const String:format[], any:...)
{
	decl
		String:buffer[512],
		String:buffer2[253];
	new
		subject,
		language,
		lastLanguage = -1;

	for (new client=1; client <= MaxClients; client++) {

		if (!IsClientInGame(client)) {
			continue;
		}

		if (client == printToChat_excludeclient) {
			printToChat_excludeclient = -1;
			continue;
		}

		language = GetClientLanguage(client);

		if (language != lastLanguage) {
			SetGlobalTransTarget(client);
			VFormat(buffer, sizeof(buffer), format, 3);
			subject = Color_ParseChatText(buffer, buffer2, sizeof(buffer2));

			lastLanguage = language;
		}

		Client_PrintToChatRaw(client, buffer2, subject, isChat);
	}

	Color_ChatClearSubject();
}

/**
 * Prints a reliable chat message to the specified clients in the chat area.
 * Allows up to 253 Characters (including \0) to be print.
 * Supports chat color tags (see: colors.inc).
 *
 * @param clients		Client Array.
 * @param numClients	Number of clients in the client array.
 * @param isChat		Tells the game to handle the chat as normal (false) or chat message (true, plays a sound), only works if SayText2 is supported.
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintToChatEx(clients[], numClients, bool:isChat, const String:format[], any:...)
{
	decl
		String:buffer[512],
		String:buffer2[253];
	new
		client,
		subject,
		language,
		lastLanguage = -1;

	for (new i=0; i < numClients; i++) {

		client = clients[i];

		if (!IsClientInGame(client)) {
			continue;
		}

		if (client == printToChat_excludeclient) {
			printToChat_excludeclient = -1;
			continue;
		}

		language = GetClientLanguage(client);

		if (language != lastLanguage) {
			SetGlobalTransTarget(client);
			VFormat(buffer, sizeof(buffer), format, 5);
			subject = Color_ParseChatText(buffer, buffer2, sizeof(buffer2));

			lastLanguage = language;
		}

		Client_PrintToChatRaw(client, buffer2, subject, isChat);
	}

	Color_ChatClearSubject();
}

enum ClientHudPrint {
	ClientHudPrint_Notify = 1,
	ClientHudPrint_Console,
	ClientHudPrint_Talk,
	Client_HudPrint_Center
};

/**
 * Prints a relieable message to the client's console.
 * Allows up to 254 Characters (including \0) to be print (253 for talk).
 * Supports chat color tags (see: colors.inc, only available in Left 4 Dead (2) or higher).
 * Chat colors are stripped automatically if not supported.
 *
 * @param clients		Client Array.
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintToConsole(client, const String:format[], any:...)
{
	decl String:buffer[512];

	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 3);

	Client_Print(client, ClientHudPrint_Console, buffer);
}

/**
 * Prints a relieable message to the client's console.
 * Allows up to 254 Characters (including \0) to be print.
 * Supports chat color tags in chat & console (see: colors.inc).
 * Chat colors are stripped automatically if not supported in the destination.
 *
 * @param clients		Client Array.
 * @param destination	Destination place (use onf of the ClientHudPrint_)
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_Print(client, ClientHudPrint:destination, const String:format[], any:...)
{
	decl String:buffer[512], String:buffer2[254];

	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 4);

	new subject = Color_ParseChatText(buffer, buffer2, sizeof(buffer2));

	if (destination == ClientHudPrint_Talk) {
		Client_PrintToChatRaw(client, buffer2, subject, false);
		return;
	}

	new EngineVersion:engineVersion = GetEngineVersion();
	if (client == 0 ||
		destination != ClientHudPrint_Console ||
		(destination == ClientHudPrint_Console
			&& engineVersion != Engine_Left4Dead && engineVersion != Engine_Left4Dead2))
	{
		Color_StripFromChatText(buffer2, buffer2, sizeof(buffer2));

		if (client == 0) {
			PrintToServer(buffer2);
			return;
		}
	}

	new Handle:userMessage = INVALID_HANDLE;
	userMessage = StartMessageOne("TextMsg", client, USERMSG_RELIABLE);

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
		&& GetUserMessageType() == UM_Protobuf) {

		PbSetInt(userMessage,    "msg_dst", _:destination);
		PbAddString(userMessage, "params",  buffer2);
		PbAddString(userMessage, "params",  "");
		PbAddString(userMessage, "params",  "");
		PbAddString(userMessage, "params",  "");
		PbAddString(userMessage, "params",  "");
	}
	else {
		BfWriteByte(userMessage		, _:destination);
		BfWriteString(userMessage	, buffer2);
	}

	EndMessage();
}

/**
 * Replies to a message in a command.
 * A client index of 0 will use PrintToServer().
 * If the command was from the console, Client_PrintToConsole() is used.
 * If the command was from chat, Client_PrintToChat() is used.
 *
 * @param client		Client Index.
 * @param format		Formatting rules String.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_Reply(client, const String:format[], any:...)
{
	decl String:buffer[255];

	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 3);

	if (GetCmdReplySource() == SM_REPLY_TO_CONSOLE) {
		Client_PrintToConsole(client, buffer);
	}
	else {
		Client_PrintToChat(client, false, buffer);
	}
}

#define	SHAKE_START					0			// Starts the screen shake for all players within the radius.
#define	SHAKE_STOP					1			// Stops the screen shake for all players within the radius.
#define	SHAKE_AMPLITUDE				2			// Modifies the amplitude of an active screen shake for all players within the radius.
#define	SHAKE_FREQUENCY				3			// Modifies the frequency of an active screen shake for all players within the radius.
#define	SHAKE_START_RUMBLEONLY		4			// Starts a shake effect that only rumbles the controller, no screen effect.
#define	SHAKE_START_NORUMBLE		5			// Starts a shake that does NOT rumble the controller.

/**
 * Shakes a client's screen with the specified amptitude,
 * frequency & duration.
 *
 * @param client		Client Index.
 * @param command		Shake Mode, use one of the SHAKE_ definitions.
 * @param amplitude		Shake magnitude/amplitude.
 * @param frequency		Shake noise frequency.
 * @param duration		Shake lasts this long.
 * @return				True on success, false otherwise.
 */
stock bool:Client_Shake(client, command=SHAKE_START, Float:amplitude=50.0, Float:frequency=150.0, Float:duration=3.0)
{
	if (command == SHAKE_STOP) {
		amplitude = 0.0;
	}
	else if (amplitude <= 0.0) {
		return false;
	}

	new Handle:userMessage = StartMessageOne("Shake", client);

	if (userMessage == INVALID_HANDLE) {
		return false;
	}

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available
		&& GetUserMessageType() == UM_Protobuf) {

		PbSetInt(userMessage,   "command",         command);
		PbSetFloat(userMessage, "local_amplitude", amplitude);
		PbSetFloat(userMessage, "frequency",       frequency);
		PbSetFloat(userMessage, "duration",        duration);
	}
	else {
		BfWriteByte(userMessage,	command);	// Shake Command
		BfWriteFloat(userMessage,	amplitude);	// shake magnitude/amplitude
		BfWriteFloat(userMessage,	frequency);	// shake noise frequency
		BfWriteFloat(userMessage,	duration);	// shake lasts this long
	}

	EndMessage();

	return true;
}

/**
 * Checks whether the client is a generic admin.
 *
 * @param				Client Index.
 * @return				True if the client is a generic admin, false otheriwse.
 */
stock bool:Client_IsAdmin(client)
{
	new AdminId:adminId = GetUserAdmin(client);

	if (adminId == INVALID_ADMIN_ID) {
		return false;
	}

	return GetAdminFlag(adminId, Admin_Generic);
}

/**
 * Checks whether a client has certain admin flags
 *
 * @param				Client Index.
 * @return				True if the client has the admin flags, false otherwise.
 */
stock bool:Client_HasAdminFlags(client, flags=ADMFLAG_GENERIC)
{
	new AdminId:adminId = GetUserAdmin(client);

	if (adminId == INVALID_ADMIN_ID) {
		return false;
	}

	return bool:(GetAdminFlags(adminId, Access_Effective) & flags);
}

/**
 * Returns whether a player is in a specific admin group.
 *
 * @param client        Client Index.
 * @param groupName     Admin group name to check.
 * @param caseSensitive	True if the group check has to be case sensitive, false otherwise.
 * @return              True if the client is in the admin group, false otherwise.
 */
stock bool:Client_IsInAdminGroup(client, const String:groupName[], bool:caseSensitive=true)
{
	new AdminId:adminId = GetUserAdmin(client);

	// Validate id.
	if (adminId == INVALID_ADMIN_ID) {
		return false;
	}

	// Get number of groups.
	new count = GetAdminGroupCount(adminId);

	// Validate number of groups.
	if (count == 0) {
		return false;
	}

	decl String:groupname[64];

	// Loop through each group.
	for (new i = 0; i < count; i++) {
		// Get group name.
		GetAdminGroup(adminId, i, groupname, sizeof(groupname));

		// Compare names.
		if (StrEqual(groupName, groupname, caseSensitive)) {
			return true;
		}
	}

	// No match.
	return false;
}

/**
 * Checks if the client is currently looking at the wall in front
 * of him with the given distance as max value.
 *
 * @param client		Client Index.
 * @param distance		Max Distance as Float value.
 * @return				True if he is looking at a wall, false otherwise.
 */
stock bool:Client_IsLookingAtWall(client, Float:distance=40.0) {

	decl Float:posEye[3], Float:posEyeAngles[3];
	new bool:isClientLookingAtWall = false;

	GetClientEyePosition(client,	posEye);
	GetClientEyeAngles(client,		posEyeAngles);

	posEyeAngles[0] = 0.0;

	new Handle:trace = TR_TraceRayFilterEx(posEye, posEyeAngles, CONTENTS_SOLID, RayType_Infinite, _smlib_TraceEntityFilter);

	if (TR_DidHit(trace)) {

		if (TR_GetEntityIndex(trace) > 0) {
			CloseHandle(trace);
			return false;
		}

		decl Float:posEnd[3];

		TR_GetEndPosition(posEnd, trace);

		if (GetVectorDistance(posEye, posEnd, true) <= (distance * distance)) {
			isClientLookingAtWall = true;
		}
	}

	CloseHandle(trace);

	return isClientLookingAtWall;
}

public bool:_smlib_TraceEntityFilter(entity, contentsMask)
{
	return entity == 0;
}

/**
 * Gets a client's class.
 * Currently supported games are: TF2, Dark Messiah.
 * Other games maybe work too, but are not tested.
 *
 * @param client		Client Index.
 * @return				Class Index.
 */
stock Client_GetClass(client)
{
	if (GetEngineVersion() == Engine_DarkMessiah) {
		return GetEntProp(client, Prop_Send, "m_iPlayerClass");
	}

	return GetEntProp(client, Prop_Send, "m_iClass");
}

/**
 * Sets a client's class.
 * Currently supported games are: TF2, Dark Messiah.
 * Other games maybe work too, but are not tested.
 *
 * @param client		Client Index.
 * @param playerClass	The class number to set the player to. Depends on game.
 * @param persistant	If true changes the players desired class so the change stays after death (probably TF2 only).
 * @return				Class Index.
 */
stock Client_SetClass(client, playerClass, bool:persistant=false)
{
	if (GetEngineVersion() == Engine_DarkMessiah) {
		SetEntProp(client, Prop_Send, "m_iPlayerClass", playerClass);
	} else {
		SetEntProp(client, Prop_Send, "m_iClass", playerClass);

		if (persistant) {
			SetEntProp(client, Prop_Send, "m_iDesiredPlayerClass", playerClass);
		}
	}
}

/**
 * Returns what buttons are currently pressed by the client.
 *
 * @param client		Client Index.
 * @return				Buttons as bitflag.
 */
stock Client_GetButtons(client)
{
	return GetClientButtons(client);
}

/**
 * Sets the client buttons.
 * Note: This will only work OnPreThink (sdkhooks) or OnPlayerRunCmd.
 *
 * @param client		Client Index.
 * @param buttons		Buttons as bitflag.
 * @noreturn
 */
stock Client_SetButtons(client, buttons)
{
	SetEntProp(client, Prop_Data, "m_nButtons", buttons);
}

/**
 * Adds buttons to the already pressed buttons.
 * Note: This will likely only work OnPreThink (sdkhooks) or OnPlayerRunCmd.
 *
 * @param client		Client Index.
 * @param buttons		Buttons as bitflag.
 * @noreturn
 */
stock Client_AddButtons(client, buttons)
{
	new newButtons = Client_GetButtons(client);
	newButtons |= buttons;
	Client_SetButtons(client, newButtons);
}

/**
 * Removes buttons from the already pressed buttons.
 * Note: This will only work OnPreThink (sdkhooks) or OnPlayerRunCmd.
 *
 * @param client		Client Index.
 * @param buttons		Buttons as bitflag.
 * @noreturn
 */
stock Client_RemoveButtons(client, buttons)
{
	new newButtons = Client_GetButtons(client);
	newButtons &= ~buttons;
	Client_SetButtons(client, newButtons);
}

/**
 * Clears all buttons.
 * Note: This will likely only work OnPreThink (sdkhooks) or OnPlayerRunCmd.
 *
 * @param client		Client Index.
 * @noreturn
 */
stock Client_ClearButtons(client)
{
	Client_SetButtons(client,0);
}

/**
 * Returns if the given buttons are pressed by the client or not.
 *
 * @param client		Client Index.
 * @param buttons		Buttons as bitflag.
 * @return				True if the buttons are pressed otherwise false.
 */
stock bool:Client_HasButtons(client, buttons)
{
	return bool:(Client_GetButtons(client) & buttons);
}

/**
 * Returns only the buttons that have changed since the last call of this.
 * Example usage: Within OnPlayerRunCmd use this function to call another function only once when a player pressed or released a button.
 *
 * @param client		Client Index.
 * @param buttons		Buttons as bitflag.
 * @return
 */
stock Client_GetChangedButtons(client)
{
	static oldButtons[MAXPLAYERS+1] = {0,...};

	new buttons = Client_GetButtons(client);
	new changedButtons = buttons ^ oldButtons[client];

	oldButtons[client] = buttons;

	return changedButtons;
}

/**
 * Sets the client's maxspeed to the given value (in units per second)
 *
 * @param Client		Client Index
 * @param maxspeed	the maximum speed the client can move
 * @noreturn
 */
stock Client_SetMaxSpeed(client, Float:value)
{
	Entity_SetMaxSpeed(client, value);
}

/**
 * Shows a screen overlay tp a client.
 * There can only be one overlay at a time.
 * If you want to clear the overlay, pass
 * an empty string to this function.
 *
 * @param Client		Client Index.
 * @param path			Overlay path (based on the game/materials/ folder) or empty String to not show any overlay.
 * @noreturn
 */
stock Client_SetScreenOverlay(client, const String:path[])
{
	ClientCommand(client, "r_screenoverlay \"%s\"", path);
}

/**
 * Shows a screen overlay to all clients.
 * There can only be one overlay at a time.
 * If you want to clear the overlay, pass
 * an empty string to this function.
 *
 * @param Client		Client Index.
 * @param path			Overlay path (based on the game/materials/ folder) or empty String to not show any overlay.
 * @noreturn
 */
stock Client_SetScreenOverlayForAll(const String:path[])
{
	LOOP_CLIENTS(client, CLIENTFILTER_INGAME | CLIENTFILTER_NOBOTS) {
		Client_SetScreenOverlay(client, path);
	}
}

/**
 * Mutes a client's voice
 *
 * @param Client		Client Index.
 * @noreturn
 */
stock Client_Mute(client)
{
	SetClientListeningFlags(client, VOICE_MUTED);
}

/**
 * UnMutes a client's voice
 * Code copied from  basecomm.sp
 *
 * @param Client		Client Index.
 * @noreturn
 */
stock Client_UnMute(client)
{
	static Handle:cvDeadTalk = INVALID_HANDLE;

	if (cvDeadTalk == INVALID_HANDLE) {
		cvDeadTalk = FindConVar("sm_deadtalk");
	}

	if (cvDeadTalk == INVALID_HANDLE) {
		SetClientListeningFlags(client, VOICE_NORMAL);
	}
	else {
		if (GetConVarInt(cvDeadTalk) == 1 && !IsPlayerAlive(client)) {
			SetClientListeningFlags(client, VOICE_LISTENALL);
		}
		else if (GetConVarInt(cvDeadTalk) == 2 && !IsPlayerAlive(client)) {
			SetClientListeningFlags(client, VOICE_TEAM);
		}
		else {
			SetClientListeningFlags(client, VOICE_NORMAL);
		}
	}
}

/**
 * Checks if a client's voice is muted
 *
 * @param Client		Client Index.
 * @return				True if the client is muted, false otherwise.
 */
stock bool:Client_IsMuted(client)
{
	return bool:(GetClientListeningFlags(client) & VOICE_MUTED);
}

/**
 * Checks if a client matches the specified flag filter.
 * Use one of the CLIENTFILTER_ constants.
 * Note that this already checks if the client is ingame or connected
 * so you don't have to do that yourself.
 * This function is optimized to make as less native calls as possible :)
 *
 * @param Client		Client Index.
 * @param flags			Client Filter Flags (Use the CLIENTFILTER_ constants).
 * @return				True if the client if the client matches, false otherwise.
 */
stock bool:Client_MatchesFilter(client, flags)
{
	new bool:isIngame = false;

	if (flags >= CLIENTFILTER_INGAME) {
		isIngame = IsClientInGame(client);

		if (isIngame) {
			if (flags & CLIENTFILTER_NOTINGAME) {
				return false;
			}
		}
		else {
			return false;
		}
	}
	else if (!IsClientConnected(client)) {
		return false;
	}

	if (!flags) {
		return true;
	}

	if (flags & CLIENTFILTER_INGAMEAUTH) {
		flags |= CLIENTFILTER_INGAME | CLIENTFILTER_AUTHORIZED;
	}

	if (flags & CLIENTFILTER_BOTS && !IsFakeClient(client)) {
		return false;
	}

	if (flags & CLIENTFILTER_NOBOTS && IsFakeClient(client)) {
		return false;
	}

	if (flags & CLIENTFILTER_ADMINS && !Client_IsAdmin(client)) {
		return false;
	}

	if (flags & CLIENTFILTER_NOADMINS && Client_IsAdmin(client)) {
		return false;
	}

	if (flags & CLIENTFILTER_AUTHORIZED && !IsClientAuthorized(client)) {
		return false;
	}

	if (flags & CLIENTFILTER_NOTAUTHORIZED && IsClientAuthorized(client)) {
		return false;
	}

	if (isIngame) {

		if (flags & CLIENTFILTER_ALIVE && !IsPlayerAlive(client)) {
			return false;
		}

		if (flags & CLIENTFILTER_DEAD && IsPlayerAlive(client)) {
			return false;
		}

		if (flags & CLIENTFILTER_SPECTATORS && GetClientTeam(client) != TEAM_SPECTATOR) {
			return false;
		}

		if (flags & CLIENTFILTER_NOSPECTATORS && GetClientTeam(client) == TEAM_SPECTATOR) {
			return false;
		}

		if (flags & CLIENTFILTER_OBSERVERS && !IsClientObserver(client)) {
			return false;
		}

		if (flags & CLIENTFILTER_NOOBSERVERS && IsClientObserver(client)) {
			return false;
		}

		if (flags & CLIENTFILTER_TEAMONE && GetClientTeam(client) != TEAM_ONE) {
			return false;
		}

		if (flags & CLIENTFILTER_TEAMTWO && GetClientTeam(client) != TEAM_TWO) {
			return false;
		}
	}

	return true;
}

/**
 * Gets all clients matching the specified flags filter.
 *
 * @param client		Client Array, size should be MaxClients or MAXPLAYERS
 * @param flags			Client Filter Flags (Use the CLIENTFILTER_ constants).
 * @return				The number of clients stored in the array
 */
stock Client_Get(clients[], flags=CLIENTFILTER_ALL)
{
	new x=0;
	for (new client = 1; client <= MaxClients; client++) {

		if (!Client_MatchesFilter(client, flags)) {
			continue;
		}

		clients[x++] = client;
	}

	return x;
}

/**
 * Gets a random client matching the specified flags filter.
 *
 * @param flags			Client Filter Flags (Use the CLIENTFILTER_ constants).
 * @return				Client Index or -1 if no client was found
 */
stock Client_GetRandom(flags=CLIENTFILTER_ALL)
{
	decl clients[MaxClients];
	new num = Client_Get(clients, flags);

	if (num == 0) {
		return -1;
	}
	else if (num == 1) {
		return clients[0];
	}

	new random = Math_GetRandomInt(0, num-1);

	return clients[random];
}

/**
 * Gets a client matching certain flags starting at start.
 *
 * @param flags			Client Filter Flags (Use the CLIENTFILTER_ constants).
 * @param start			Start Index.
 * @return				Client Index or -1 if no client was found
 */
stock Client_GetNext(flags, start=1)
{
	for (new client=start; client <= MaxClients; client++) {

		if (Client_MatchesFilter(client, flags)) {
			return client;
		}
	}

	return -1;
}

/**
 * Retrieves the time duration a client played on the current map.
 *
 * @param client		Client Index.
 * @return				Time in seconds as Float
 */
stock Float:Client_GetMapTime(client)
{
	new Float:fClientTime = GetClientTime(client);
	new Float:fGameTime = GetGameTime();

	return (fClientTime < fGameTime) ? fClientTime : fGameTime;
}

/**
 * Gets client money value (for games like Counter-Strike:Source).
 *
 * @param client		Client Index.
 * @return				Money value from the client.
 */
stock Client_GetMoney(client)
{
	return GetEntProp(client, Prop_Send, "m_iAccount");
}

/**
 * Sets client money value (for games like Counter-Strike:Source).
 *
 * @param client		Client Index.
 * @param value			Money value to set.
 * @noreturn
 */
stock Client_SetMoney(client, value)
{
	SetEntProp(client, Prop_Send, "m_iAccount", value);
}

/**
 * Gets a client's observers.
 *
 * @param client		Client Index.
 * @param observers		Array with size of MaxClients or MAXPLAYERS.
 * @param flags			Client Filter Flags (Use the CLIENTFILTER_ constants).
 * @return				Number of observers found.
 */
stock Client_GetObservers(client, observers[], flags=CLIENTFILTER_ALL)
{
	new count = 0;

	LOOP_CLIENTS(player, CLIENTFILTER_OBSERVERS | flags) {

		if (Client_GetObserverTarget(player) == client) {
			observers[count++] = player;
		}
	}

	return count;
}

static Float:getPlayersInRadius_distances[MAXPLAYERS+1];

/**
 * Gets all players near a player in a certain radius and
 * orders the players by distance (optional).
 *
 * @param client			Client Index.
 * @param clients			Array with size of MaxClients or MAXPLAYERS.
 * @param radius			radius Float (max distance)
 * @param orderByDistance	Set to true to order the clients by distance, false otherwise.
 * @return					Number of clients found.
 */
stock Client_GetPlayersInRadius(client, clients[], Float:radius, bool:orderByDistance=true)
{
	decl Float:origin_client[3];
	new
		Float:distance,
		count=0;

	Entity_GetAbsOrigin(client, origin_client);

	LOOP_CLIENTS(player, CLIENTFILTER_INGAME) {

		if (player == client) {
			continue;
		}

		distance = Entity_GetDistanceOrigin(player, origin_client);

		if (distance <= radius) {
			clients[count++] = player;

			if (orderByDistance) {
				getPlayersInRadius_distances[player] = distance;
			}
		}
	}

	if (orderByDistance) {
		SortCustom1D(clients, count, __smlib_GetPlayersInRadius_Sort);
	}

	return count;
}

public __smlib_GetPlayersInRadius_Sort(player1, player2, const clients[], Handle:hndl)
{
	return FloatCompare(getPlayersInRadius_distances[player1], getPlayersInRadius_distances[player2]);
}

/**
 * Gets the next player observing client starting at start.
 *
 * @param client		Client Index (Observer Target)
 * @param start			Start Index.
 * @param flags			Client Filter Flags (Use the CLIENTFILTER_ constants).
 * @return				Client Index or -1 if no client was found
 */
stock Client_GetNextObserver(client, start=1, flags=CLIENTFILTER_ALL)
{
	for (new player=start; player <= MaxClients; player++) {

		if (Client_MatchesFilter(player, CLIENTFILTER_OBSERVERS | flags)) {

			if (Client_GetObserverTarget(player) == client) {
				return player;
			}
		}
	}

	return -1;
}

/**
 * Searchs and returns the game's player_manager entity.
 * This should be called on every map start.
 *
 * @return				player_manager entity or INVALID_ENT_REFERENCE if not found.
 */
stock Client_GetPlayerManager()
{
	static player_manager = INVALID_ENT_REFERENCE;

	if (player_manager != INVALID_ENT_REFERENCE) {

		if (Entity_IsValid(player_manager)) {
			return player_manager;
		}
		else {
			player_manager = INVALID_ENT_REFERENCE;
		}
	}

	new maxEntities = GetMaxEntities();

	for (new entity=0; entity < maxEntities; entity++) {

		if (!Entity_IsValid(entity)) {
			continue;
		}

		if (Entity_ClassNameMatches(entity, "player_manager", true)) {
			player_manager = EntIndexToEntRef(entity);

			return player_manager;
		}
	}

	return INVALID_ENT_REFERENCE;
}

/**
 * Sets the client's ping as displayed in the scoreboards.
 * Should be called OnGameFrame.
 *
 * @param client		Client Index
 * @param start			New ping value.
 * @return				True on sucess, false otherwise.
 */
stock Client_SetPing(client, value)
{
	new player_manager = Client_GetPlayerManager();

	static offset = -1;

	if (offset== -1) {
		offset = GetEntSendPropOffs(player_manager, "m_iPing", true);

		if (offset == -1) {
			return false;
		}
	}

	SetEntData(player_manager, offset + (client * 4), value, 4, true);

	return true;
}

static printToTop_excludeclient = -1;

/**
 * Exclude a client from the next call to a Client_PrintToTop function.
 *
 * @param client		Client Index.
 * @noreturn
 */
stock Client_PrintToTopExclude(client)
{
	printToTop_excludeclient = client;
}

/**
 * Prints colored text to the top left of the screen
 * for one client. Does not work in all games.
 * Line Breaks can't be done.
 *
 * @param client		Client Index.
 * @param r				Red amount.
 * @param g				Green amount.
 * @param b				Blue amount.
 * @param a				Transparency.
 * @param duration		Duration in seconds the text stays (min 10 - max 200 seconds).
 * @param text			Text to print to.
 * @return				True on success, false if the key value for the dialog couldn't be created or closed.
 */
stock bool:Client_PrintToTopRaw(client, r=255, g=255, b=255, a=255, Float:duration=10.0, const String:text[])
{
	//message line max 50
	//overline: 	39*_
	//underline: 	44*T
	new Handle:keyValue = CreateKeyValues("Stuff", "title", text);

	if (keyValue == INVALID_HANDLE) {
		return false;
	}

	KvSetColor(keyValue, "color", r, g, b, a);
	KvSetNum(keyValue, "level", 1);
	KvSetNum(keyValue, "time", RoundToFloor(duration));

	CreateDialog(client, keyValue, DialogType_Msg);

	if (!CloseHandle(keyValue)) {
		return false;
	}
	return true;
}

/**
 * Prints colored text to the top left of the screen
 * for one client. Does not work in all games.
 * Line Breaks can't be done.
 *
 * @param client		Client Index.
 * @param r				Red amount.
 * @param g				Green amount.
 * @param b				Blue amount.
 * @param a				Transparency.
 * @param duration		Duration in seconds the text stays (min 10 - max 200 seconds).
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @return				True on success, false if the key value for the dialog couldn't be created or closed.
 */
stock bool:Client_PrintToTop(client, r=255, g=255, b=255, a=255, Float:duration=10.0, const String:format[], any:...)
{
	new String:buffer[150];
	SetGlobalTransTarget(client);
	VFormat(buffer, sizeof(buffer), format, 8);

	return Client_PrintToTopRaw(client, r, g, b, a, duration, buffer);
}

/**
 * Prints colored text to the top left of the screen
 * to all clients. Does not work in all games.
 * Line Breaks can't be done.
 *
 * @param r				Red amount.
 * @param g				Green amount.
 * @param b				Blue amount.
 * @param a				Transparency.
 * @param duration		Duration in seconds the text stays (min 10 - max 200 seconds).
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintToTopAll(r=255, g=255, b=255, a=255, Float:duration=10.0, const String:format[], any:...)
{
	decl
		String:buffer[150];
	new
		language,
		lastLanguage = -1;

	for (new client=1; client <= MaxClients; client++) {

		if (!IsClientInGame(client)) {
			continue;
		}

		if (client == printToTop_excludeclient) {
			printToTop_excludeclient = -1;
			continue;
		}

		language = GetClientLanguage(client);

		if (language != lastLanguage) {
			SetGlobalTransTarget(client);
			VFormat(buffer, sizeof(buffer), format, 7);

			lastLanguage = language;
		}

		Client_PrintToTopRaw(client, r, g, b, a, duration, buffer);
	}
}

/**
 * Prints colored text to the top left of the screen
 * to specified clients. Does not work in all games.
 * Line Breaks can't be done.
 *
 * @param clients		Client Array.
 * @param numClients	Number of clients in the clients array.
 * @param r				Red amount.
 * @param g				Green amount.
 * @param b				Blue amount.
 * @param a				Transparency.
 * @param duration		Duration in seconds the text stays (min 10 - max 200 seconds).
 * @param format		Formatting rules.
 * @param ...			Variable number of format parameters.
 * @noreturn
 */
stock Client_PrintToTopEx(clients[], numClients, r=255, g=255, b=255, a=255, Float:duration=10.0, const String:format[], any:...)
{
	decl
		String:buffer[150];
	new
		client,
		language,
		lastLanguage = -1;

	for (new i=0; i < numClients; i++) {

		client = clients[i];

		if (!IsClientInGame(client)) {
			continue;
		}

		if (client == printToTop_excludeclient) {
			printToTop_excludeclient = -1;
			continue;
		}

		language = GetClientLanguage(client);

		if (language != lastLanguage) {
			SetGlobalTransTarget(client);
			VFormat(buffer, sizeof(buffer), format, 9);

			lastLanguage = language;
		}

		Client_PrintToTopRaw(client, r, g, b, a, duration, buffer);
	}
}

/**
 * Opens the scoreboard for a specific client
 *
 * @tested csgo
 * @param client	Client index
 * @noreturn
 */
stock Client_ShowScoreboard(client, flags=USERMSG_RELIABLE | USERMSG_BLOCKHOOKS)
{
	new Handle:handle = StartMessageOne("VGUIMenu", client, flags);

	if (GetFeatureStatus(FeatureType_Native, "GetUserMessageType") == FeatureStatus_Available &&
			GetUserMessageType() == UM_Protobuf) {

		PbSetString(handle, "name", "scores");
		PbSetBool(handle, "show", true);
	}
	else {
		BfWriteString(handle, "scores");
		BfWriteByte(handle, 1); // Show
		BfWriteByte(handle, 0); // subkeys count
	}

	EndMessage();
}