//========= Copyright (c) 1996-2002, Valve LLC, All rights reserved. ============
//
// Purpose: 
//
// $NoKeywords: $
//=============================================================================

#include "hud.h"
#include "cl_util.h"
#include "cl_entity.h"
#include "triangleapi.h"
#if USE_VGUI
#include "vgui_TeamFortressViewport.h"
#include "vgui_SpectatorPanel.h"
#endif
#include "hltv.h"

#include "pm_shared.h"
#include "pm_defs.h"
#include "pmtrace.h"
#include "parsemsg.h"
#include "entity_types.h"

// these are included for the math functions
#include "com_model.h"
#include "demo_api.h"
#include "event_api.h"
#include "studio_util.h"
#include "screenfade.h"

#pragma warning(disable: 4244)

extern "C" int		iJumpSpectator;
extern "C" float	vJumpOrigin[3];
extern "C" float	vJumpAngles[3]; 

extern void V_GetInEyePos( int entity, float * origin, float * angles );
extern void V_ResetChaseCam();
extern void V_GetChasePos( int target, float * cl_angles, float * origin, float * angles );
extern float * GetClientColor( int clientIndex );

extern vec3_t v_origin;		// last view origin
extern vec3_t v_angles;		// last view angle
extern vec3_t v_cl_angles;	// last client/mouse angle
extern vec3_t v_sim_org;	// last sim origin

#if 0
const char *GetSpectatorLabel( int iMode )
{
	switch( iMode )
	{
		case OBS_CHASE_LOCKED:
			return "#OBS_CHASE_LOCKED";

		case OBS_CHASE_FREE:
			return "#OBS_CHASE_FREE";

		case OBS_ROAMING:
			return "#OBS_ROAMING";

		case OBS_IN_EYE:
			return "#OBS_IN_EYE";

		case OBS_MAP_FREE:
			return "#OBS_MAP_FREE";

		case OBS_MAP_CHASE:
			return "#OBS_MAP_CHASE";

		case OBS_NONE:
		default:
			return "#OBS_NONE";
	}
}

#endif

void SpectatorMode( void )
{
	if( gEngfuncs.Cmd_Argc() <= 1 )
	{
		gEngfuncs.Con_Printf( "usage:  spec_mode <Main Mode> [<Inset Mode>]\n" );
		return;
	}

	// SetModes() will decide if command is executed on server or local
	if( gEngfuncs.Cmd_Argc() == 2 )
		gHUD.m_Spectator.SetModes( atoi( gEngfuncs.Cmd_Argv( 1 ) ), -1 );
	else if ( gEngfuncs.Cmd_Argc() == 3 )
		gHUD.m_Spectator.SetModes( atoi( gEngfuncs.Cmd_Argv( 1 ) ), atoi( gEngfuncs.Cmd_Argv( 2 ) )  );
}

void SpectatorSpray( void )
{
	vec3_t forward;
	char string[128];

	if( !gEngfuncs.IsSpectateOnly() )
		return;

	AngleVectors( v_angles, forward, NULL, NULL );
	VectorScale( forward, 128, forward );
	VectorAdd( forward, v_origin, forward );
	pmtrace_t * trace = gEngfuncs.PM_TraceLine( v_origin, forward, PM_TRACELINE_PHYSENTSONLY, 2, -1 );
	if( trace->fraction != 1.0f )
	{
		sprintf( string, "drc_spray %.2f %.2f %.2f %i",
			(double)trace->endpos[0], (double)trace->endpos[1], (double)trace->endpos[2], trace->ent );
		gEngfuncs.pfnServerCmd( string );
	}
}

void SpectatorHelp( void )
{
#if USE_VGUI
	if( gViewPort )
	{
		gViewPort->ShowVGUIMenu( MENU_SPECHELP );
	}
	else
#endif
	{
  		char *text = CHudTextMessage::BufferedLocaliseTextString( "#Spec_Help_Text" );

		if( text )
		{
			while( *text )
			{
				if( *text != 13 )
					gEngfuncs.Con_Printf( "%c", *text );
				text++;
			}
		}
	}
}

void SpectatorMenu( void )
{
	if( gEngfuncs.Cmd_Argc() <= 1 )
	{
		gEngfuncs.Con_Printf( "usage:  spec_menu <0|1>\n" );
		return;
	}

#if USE_VGUI
	gViewPort->m_pSpectatorPanel->ShowMenu( atoi( gEngfuncs.Cmd_Argv( 1 ) ) != 0 );
#endif
}

void ToggleScores( void )
{
#if USE_VGUI && !USE_NOVGUI_SCOREBOARD
	if( gViewPort )
	{
		if( gViewPort->IsScoreBoardVisible() )
		{
			gViewPort->HideScoreBoard();
		}
		else
		{
			gViewPort->ShowScoreBoard();
		}
	}
#else
	if (gHUD.m_Scoreboard.m_iShowscoresHeld) {
		gHUD.m_Scoreboard.UserCmd_HideScores();
	} else {
		gHUD.m_Scoreboard.UserCmd_ShowScores();
	}
#endif
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
int CHudSpectator::Init()
{
	gHUD.AddHudElem( this );

	m_iFlags |= HUD_ACTIVE;
	m_flNextObserverInput = 0.0f;
	m_zoomDelta = 0.0f;
	m_moveDelta = 0.0f;
	m_FOV = 90.0f;
	m_chatEnabled = ( gHUD.m_SayText.m_HUD_saytext->value != 0 );
	iJumpSpectator = 0;

	memset( &m_OverviewData, 0, sizeof(m_OverviewData) );
	memset( &m_OverviewEntities, 0, sizeof(m_OverviewEntities) );
	m_lastPrimaryObject = m_lastSecondaryObject = 0;

	gEngfuncs.pfnAddCommand( "spec_mode", SpectatorMode );
	gEngfuncs.pfnAddCommand( "spec_decal", SpectatorSpray );
	gEngfuncs.pfnAddCommand( "spec_help", SpectatorHelp );
	gEngfuncs.pfnAddCommand( "spec_menu", SpectatorMenu );
	gEngfuncs.pfnAddCommand( "togglescores", ToggleScores );

	m_drawnames = gEngfuncs.pfnRegisterVariable( "spec_drawnames", "1", 0 );
	m_drawcone = gEngfuncs.pfnRegisterVariable( "spec_drawcone", "1", 0 );
	m_drawstatus = gEngfuncs.pfnRegisterVariable( "spec_drawstatus", "1", 0 );
	m_autoDirector = gEngfuncs.pfnRegisterVariable( "spec_autodirector", "1", 0 );
	m_pip = gEngfuncs.pfnRegisterVariable( "spec_pip", "1", 0 );
	
	if( !m_drawnames || !m_drawcone || !m_drawstatus || !m_autoDirector || !m_pip )
	{
		gEngfuncs.Con_Printf( "ERROR! Couldn't register all spectator variables.\n" );
		return 0;
	}

	return 1;
}

//-----------------------------------------------------------------------------
// UTIL_StringToVector originally from ..\dlls\util.cpp, slightly changed
//-----------------------------------------------------------------------------
void UTIL_StringToVector( float * pVector, const char *pString )
{
	char *pstr, *pfront, tempString[128];
	int	j;

	strncpy( tempString, pString, sizeof( tempString ) );
	tempString[sizeof( tempString ) - 1] = '\0';

	pstr = pfront = tempString;

	for( j = 0; j < 3; j++ )		
	{
		pVector[j] = atof( pfront );

		while( *pstr && *pstr != ' ' )
			pstr++;
		if( !( *pstr ) )
			break;
		pstr++;
		pfront = pstr;
	}

	if( j < 2 )
	{
		for( j = j + 1;j < 3; j++ )
			pVector[j] = 0;
	}
}

int UTIL_FindEntityInMap( const char *name, float *origin, float *angle )
{
	int			n, found = 0;
	char			keyname[256];
	char			token[2048];

	cl_entity_t *pEnt = gEngfuncs.GetEntityByIndex( 0 );	// get world model

	if( !pEnt )
		return 0;

	if( !pEnt->model )
		return 0;

	char *data = pEnt->model->entities;

	while( data )
	{
		data = gEngfuncs.COM_ParseFile( data, token );

		if( ( token[0] == '}' ) || ( token[0] == 0 ) )
			break;

		if( !data )
		{
			gEngfuncs.Con_DPrintf( "UTIL_FindEntityInMap: EOF without closing brace\n" );
			return 0;
		}

		if( token[0] != '{' )
		{
			gEngfuncs.Con_DPrintf( "UTIL_FindEntityInMap: expected {\n" );
			return 0;
		}

		// we parse the first { now parse entities properties		
		while( 1 )
		{	
			// parse key
			data = gEngfuncs.COM_ParseFile( data, token );
			if( token[0] == '}' )
				break; // finish parsing this entity

			if( !data )
			{
				gEngfuncs.Con_DPrintf( "UTIL_FindEntityInMap: EOF without closing brace\n" );
				return 0;
			}

			strcpy( keyname, token );

			// another hack to fix keynames with trailing spaces
			n = strlen( keyname );
			while( n && keyname[n - 1] == ' ' )
			{
				keyname[n - 1] = 0;
				n--;
			}

			// parse value	
			data = gEngfuncs.COM_ParseFile( data, token );
			if( !data )
			{
				gEngfuncs.Con_DPrintf( "UTIL_FindEntityInMap: EOF without closing brace\n" );
				return 0;
			}
	
			if( token[0] == '}' )
			{
				gEngfuncs.Con_DPrintf( "UTIL_FindEntityInMap: closing brace without data\n" );
				return 0;
			}

			if( !strcmp( keyname, "classname" ) )
			{
				if( !strcmp( token, name ) )
				{
					found = 1;	// thats our entity
				}
			}

			if( !strcmp( keyname, "angle" ) )
			{
				float y = atof( token );

				if( y >= 0 )
				{
					angle[0] = 0.0f;
					angle[1] = y;
				}
				else if( (int)y == -1 )
				{
					angle[0] = -90.0f;
					angle[1] = 0.0f;;
				}
				else
				{
					angle[0] = 90.0f;
					angle[1] = 0.0f;
				}

				angle[2] = 0.0f;
			}

			if( !strcmp( keyname, "angles" ) )
			{
				UTIL_StringToVector( angle, token );
			}

			if( !strcmp( keyname, "origin" ) )
			{
				UTIL_StringToVector( origin, token );
			}
		} // while (1)

		if( found )
			return 1;
	}

	return 0;	// we search all entities, but didn't found the correct
}

//-----------------------------------------------------------------------------
// SetSpectatorStartPosition(): 
// Get valid map position and 'beam' spectator to this position
//-----------------------------------------------------------------------------
void CHudSpectator::SetSpectatorStartPosition()
{
	// search for info_player start
	if( UTIL_FindEntityInMap( "trigger_camera",  m_cameraOrigin, m_cameraAngles ) )
		iJumpSpectator = 1;

	else if( UTIL_FindEntityInMap( "info_player_start",  m_cameraOrigin, m_cameraAngles ) )
		iJumpSpectator = 1;

	else if( UTIL_FindEntityInMap( "info_player_deathmatch",  m_cameraOrigin, m_cameraAngles ) )
		iJumpSpectator = 1;

	else if( UTIL_FindEntityInMap( "info_player_coop",  m_cameraOrigin, m_cameraAngles ) )
		iJumpSpectator = 1;
	else
	{
		// jump to 0,0,0 if no better position was found
		VectorCopy( vec3_origin, m_cameraOrigin );
		VectorCopy( vec3_origin, m_cameraAngles );
	}

	VectorCopy( m_cameraOrigin, vJumpOrigin );
	VectorCopy( m_cameraAngles, vJumpAngles );

	iJumpSpectator = 1;	// jump anyway
}

void CHudSpectator::SetCameraView( vec3_t pos, vec3_t angle, float fov )
{
	m_FOV = fov;
	VectorCopy( pos, vJumpOrigin );
	VectorCopy( angle, vJumpAngles );
	gEngfuncs.SetViewAngles( vJumpAngles );
	iJumpSpectator = 1;	// jump anyway
}

void CHudSpectator::AddWaypoint( float time, vec3_t pos, vec3_t angle, float fov, int flags )
{
	if( flags == 0 && time == 0.0f )
	{
		// switch instantly to this camera view
		SetCameraView( pos, angle, fov );
		return;
	}

	if( m_NumWayPoints >= MAX_CAM_WAYPOINTS )
	{
		gEngfuncs.Con_Printf( "Too many camera waypoints!\n" );
		return;
	}

	VectorCopy( angle, m_CamPath[m_NumWayPoints].angle );
	VectorCopy( pos, m_CamPath[m_NumWayPoints].position );
	m_CamPath[m_NumWayPoints].flags = flags;
	m_CamPath[m_NumWayPoints].fov = fov;
	m_CamPath[m_NumWayPoints].time = time;

	gEngfuncs.Con_DPrintf( "Added waypoint %i\n", m_NumWayPoints );

	m_NumWayPoints++;
}

void CHudSpectator::SetWayInterpolation( cameraWayPoint_t *prev, cameraWayPoint_t *start, cameraWayPoint_t *end, cameraWayPoint_t *next )
{
	m_WayInterpolation.SetViewAngles( start->angle, end->angle );

	m_WayInterpolation.SetFOVs( start->fov, end->fov );

	m_WayInterpolation.SetSmoothing( ( start->flags & DRC_FLAG_SLOWSTART ) != 0,
		( start->flags & DRC_FLAG_SLOWEND ) != 0 );

	if( prev && next )
	{
		m_WayInterpolation.SetWaypoints( &prev->position, start->position, end->position, &next->position );
	}
	else if( prev )
	{
		m_WayInterpolation.SetWaypoints( &prev->position, start->position, end->position, NULL );
	}
	else if( next )
	{
		m_WayInterpolation.SetWaypoints( NULL, start->position, end->position, &next->position );
	}
	else
	{
		m_WayInterpolation.SetWaypoints( NULL, start->position, end->position, NULL );
	}
}

bool CHudSpectator::GetDirectorCamera( vec3_t &position, vec3_t &angle )
{
	float now = gHUD.m_flTime;
	float fov = 90.0f;

	if( m_ChaseEntity )
	{
		cl_entity_t *ent = gEngfuncs.GetEntityByIndex( m_ChaseEntity );

		if( ent )
		{
			vec3_t vt = ent->curstate.origin;

			if( m_ChaseEntity <= gEngfuncs.GetMaxClients())
			{
				if( ent->curstate.solid == SOLID_NOT )
				{
					vt[2]+= -8 ; // PM_DEAD_VIEWHEIGHT
				}
				else if( ent->curstate.usehull == 1 )
				{
					vt[2]+= 12; // VEC_DUCK_VIEW;
				}
				else
				{
					vt[2]+= 28; // DEFAULT_VIEWHEIGHT
				}
			}

			vt = vt - position;
			VectorAngles( vt, angle );
			angle[0] = -angle[0];
			return true;
		}
		else
		{
			return false;
		}
	}

	if( !m_IsInterpolating )
		return false;

	if( m_WayPoint < 0 || m_WayPoint >= ( m_NumWayPoints - 1 ))
		return false;

	cameraWayPoint_t *wp1 = &m_CamPath[m_WayPoint];
	cameraWayPoint_t *wp2 = &m_CamPath[m_WayPoint+1];

	if( now < wp1->time )
		return false;

	while( now > wp2->time )
	{
		// go to next waypoint, if possible
		m_WayPoint++;

		if( m_WayPoint >= ( m_NumWayPoints - 1 ))
		{
			m_IsInterpolating = false;
			return false;	// there is no following waypoint
		}

		wp1 = wp2;
		wp2 = &m_CamPath[m_WayPoint + 1];

		if( m_WayPoint > 0 )
		{
			// we have a predecessor

			if( m_WayPoint < ( m_NumWayPoints - 1 ))
			{
				// we have also a successor
				SetWayInterpolation( &m_CamPath[m_WayPoint - 1], wp1, wp2, &m_CamPath[m_WayPoint + 2] );
			}
			else
			{
				SetWayInterpolation( &m_CamPath[m_WayPoint - 1], wp1, wp2, NULL );
			}
		}
		else if( m_WayPoint < ( m_NumWayPoints - 1 ))
		{
			// we only have a successor
			SetWayInterpolation( NULL, wp1, wp2, &m_CamPath[m_WayPoint + 2] );
		}
		else
		{
			// we have only two waypoints
			SetWayInterpolation( NULL, wp1, wp2, NULL );
		}
	}

	if( wp2->time <= wp1->time )
		return false;

	float fraction = ( now - wp1->time ) / ( wp2->time - wp1->time );

	if( fraction < 0.0f )
		fraction = 0.0f;
	else if( fraction > 1.0f )
		fraction = 1.0f;

	m_WayInterpolation.Interpolate( fraction, position, angle, &fov );

	// gEngfuncs.Con_Printf( "Interpolate time: %.2f, fraction %.2f, point : %.2f,%.2f,%.2f\n", now, fraction, position[0], position[1], position[2] );

	SetCameraView( position, angle, fov );

	return true;
}
//-----------------------------------------------------------------------------
// Purpose: Loads new icons
//-----------------------------------------------------------------------------
int CHudSpectator::VidInit()
{
	m_hsprPlayer		= SPR_Load( "sprites/iplayer.spr" );
	m_hsprPlayerBlue	= SPR_Load( "sprites/iplayerblue.spr" );
	m_hsprPlayerRed		= SPR_Load( "sprites/iplayerred.spr" );
	m_hsprPlayerDead	= SPR_Load( "sprites/iplayerdead.spr" );
	m_hsprUnkownMap		= SPR_Load( "sprites/tile.spr" );
	m_hsprBeam		= SPR_Load( "sprites/laserbeam.spr" );
	m_hsprCamera		= SPR_Load( "sprites/camera.spr" );
	m_hCrosshair		= SPR_Load( "sprites/crosshairs.spr" );

	m_lastPrimaryObject = m_lastSecondaryObject = 0;
	m_flNextObserverInput = 0.0f;
	m_lastHudMessage = 0;
	m_iSpectatorNumber = 0;
	iJumpSpectator	= 0;
	g_iUser1 = g_iUser2 = 0;

	return 1;
}

float CHudSpectator::GetFOV( void )
{
	return m_FOV;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : flTime - 
//			intermission - 
//-----------------------------------------------------------------------------
int CHudSpectator::Draw( float flTime )
{
	int lx;

	char string[256];
	float *color;

	// draw only in spectator mode
	if( !g_iUser1 )
		return 0;

	// if user pressed zoom, aplly changes
	if( ( m_zoomDelta != 0.0f ) && ( g_iUser1 == OBS_MAP_FREE ) )
	{
		m_mapZoom += m_zoomDelta;

		if( m_mapZoom > 3.0f ) 
			m_mapZoom = 3.0f;

		if( m_mapZoom < 0.5f ) 
			m_mapZoom = 0.5f;
	}

	// if user moves in map mode, change map origin
	if( ( m_moveDelta != 0.0f ) && ( g_iUser1 != OBS_ROAMING ) )
	{
		vec3_t right;
		AngleVectors( v_angles, NULL, right, NULL );
		VectorNormalize( right );
		VectorScale( right, m_moveDelta, right );

		VectorAdd( m_mapOrigin, right, m_mapOrigin )
	}

	// Only draw the icon names only if map mode is in Main Mode
	if( g_iUser1 < OBS_MAP_FREE ) 
		return 1;

	if( !m_drawnames->value )
		return 1;

	// make sure we have player info
#if USE_VGUI
	gViewPort->GetAllPlayersInfo();
#else
	gHUD.GetAllPlayersInfo();
#endif
	// loop through all the players and draw additional infos to their sprites on the map
	for( int i = 0; i < MAX_PLAYERS; i++ )
	{
		if( m_vPlayerPos[i][2] < 0 )	// marked as invisible ?
			continue;

		// check if name would be in inset window
		if( m_pip->value != INSET_OFF )
		{
			if( m_vPlayerPos[i][0] > XRES( m_OverviewData.insetWindowX ) &&
					m_vPlayerPos[i][1] > YRES( m_OverviewData.insetWindowY ) &&
					m_vPlayerPos[i][0] < XRES( m_OverviewData.insetWindowX + m_OverviewData.insetWindowWidth ) &&
					m_vPlayerPos[i][1] < YRES( m_OverviewData.insetWindowY + m_OverviewData.insetWindowHeight) ) 
				continue;
		}

		color = GetClientColor( i + 1 );

		// draw the players name and health underneath
		strcpy( string, g_PlayerInfoList[i + 1].name );

		lx = strlen( string ) * 3; // 3 is avg. character length :)

		DrawSetTextColor( color[0], color[1], color[2] );
		DrawConsoleString( m_vPlayerPos[i][0] - lx,m_vPlayerPos[i][1], string );
	}

	return 1;
}

void CHudSpectator::DirectorMessage( int iSize, void *pbuf )
{
	float f1, f2;
	char *string;
	vec3_t	v1, v2;
	int	i1, i2, i3;

	BEGIN_READ( pbuf, iSize );

	int cmd = READ_BYTE();

	switch( cmd )	// director command byte 
	{
		case DRC_CMD_START:	
			// now we have to do some things clientside, since the proxy doesn't know our mod 
			g_iPlayerClass = 0;
			g_iTeamNumber = 0;

			// fake a InitHUD & ResetHUD message
			gHUD.MsgFunc_InitHUD( NULL, 0, NULL );
			gHUD.MsgFunc_ResetHUD( NULL, 0, NULL );							
			break;
		case DRC_CMD_EVENT: // old director style message
			m_lastPrimaryObject = READ_WORD();
			m_lastSecondaryObject = READ_WORD();
			m_iObserverFlags = READ_LONG();
														
			if( m_autoDirector->value )
			{
				if( ( g_iUser2 != m_lastPrimaryObject) || ( g_iUser3 != m_lastSecondaryObject ) )
					V_ResetChaseCam();	

				g_iUser2 = m_lastPrimaryObject;
				g_iUser3 = m_lastSecondaryObject;
			}

			// gEngfuncs.Con_Printf( "Director Camera: %i %i\n", firstObject, secondObject );
			break;
		case DRC_CMD_MODE:
			if( m_autoDirector->value )
			{
				SetModes( READ_BYTE(), -1 );
			}
			break;
		case DRC_CMD_CAMERA:
			v1[0] = READ_COORD();	// position
			v1[1] = READ_COORD();
			v1[2] = READ_COORD();	// vJumpOrigin

			v1[0] = READ_COORD();	// view angle
			v1[1] = READ_COORD();	// vJumpAngles
			v1[2] = READ_COORD();

			f1    = READ_BYTE();	// fov
			i1    = READ_WORD();	// target

			if( m_autoDirector->value )
			{
				SetModes( OBS_ROAMING, -1 );
				SetCameraView( v1, v2, f1 );
				m_ChaseEntity = i1;
			}
			break;
		case DRC_CMD_MESSAGE:
			{
				client_textmessage_t * msg = &m_HUDMessages[m_lastHudMessage];

				msg->effect = READ_BYTE();		// effect

				UnpackRGB( (int&)msg->r1, (int&)msg->g1, (int&)msg->b1, READ_LONG() );	// color
				msg->r2 = msg->r1;
				msg->g2 = msg->g1;
				msg->b2 = msg->b1;
				msg->a2 = msg->a1 = 0xFF;	// not transparent

				msg->x = READ_FLOAT();	// x pos
				msg->y = READ_FLOAT();	// y pos
								
				msg->fadein = READ_FLOAT();	// fadein
				msg->fadeout = READ_FLOAT();	// fadeout
				msg->holdtime = READ_FLOAT();	// holdtime
				msg->fxtime = READ_FLOAT();	// fxtime;

				strncpy( m_HUDMessageText[m_lastHudMessage], READ_STRING(), 127 );
				m_HUDMessageText[m_lastHudMessage][127] = 0;	// text 

				msg->pMessage = m_HUDMessageText[m_lastHudMessage];
				msg->pName = "HUD_MESSAGE";

				gHUD.m_Message.MessageAdd( msg );

				m_lastHudMessage++;
				m_lastHudMessage %= MAX_SPEC_HUD_MESSAGES;
			}
			break;
		case DRC_CMD_SOUND:
			string = READ_STRING();
			f1 =  READ_FLOAT();

			// gEngfuncs.Con_Printf("DRC_CMD_FX_SOUND: %s %.2f\n", string, f1 );
			gEngfuncs.pEventAPI->EV_PlaySound( 0, v_origin, CHAN_BODY, string, f1, ATTN_NORM, 0, PITCH_NORM );
			break;
		case DRC_CMD_TIMESCALE:
			f1 = READ_FLOAT();
			break;
		case DRC_CMD_STATUS:
			READ_LONG(); // total number of spectator slots
			m_iSpectatorNumber = READ_LONG(); // total number of spectator
			READ_WORD(); // total number of relay proxies
#if USE_VGUI
			gViewPort->UpdateSpectatorPanel();
#endif
			break;
		case DRC_CMD_BANNER:
			// gEngfuncs.Con_DPrintf( "GUI: Banner %s\n",READ_STRING() ); // name of banner tga eg gfx/temp/7454562234563475.tga
#if USE_VGUI
			gViewPort->m_pSpectatorPanel->m_TopBanner->LoadImage( READ_STRING() );
			gViewPort->UpdateSpectatorPanel();
#endif
			break;
		case DRC_CMD_STUFFTEXT:
			gEngfuncs.pfnFilteredClientCmd( READ_STRING() );
			break;
		case DRC_CMD_CAMPATH:
			v1[0] = READ_COORD();	// position
			v1[1] = READ_COORD();
			v1[2] = READ_COORD();	// vJumpOrigin

			v2[0] = READ_COORD();	// view angle
			v2[1] = READ_COORD();   // vJumpAngles
			v2[2] = READ_COORD();
			f1    = READ_BYTE();	// FOV
			i1    = READ_BYTE();	// flags

			if( m_autoDirector->value )
			{
				SetModes( OBS_ROAMING, -1 );
				SetCameraView( v1, v2, f1 );
			}
			break;
		case DRC_CMD_WAYPOINTS:
			i1 = READ_BYTE();
			m_NumWayPoints = 0;
			m_WayPoint = 0;
			for( i2 = 0; i2 < i1; i2++ )
			{
				f1 = gHUD.m_flTime + (float)( READ_SHORT()) / 100.0f;

				v1[0] = READ_COORD();	// position
				v1[1] = READ_COORD();
				v1[2] = READ_COORD();	// vJumpOrigin

				v2[0] = READ_COORD();	// view angle
				v2[1] = READ_COORD();   // vJumpAngles
				v2[2] = READ_COORD();
				f2    = READ_BYTE();	// fov
				i3    = READ_BYTE();	// flags

				AddWaypoint( f1, v1, v2, f2, i3 );
			}

			// gEngfuncs.Con_Printf( "CHudSpectator::DirectorMessage: waypoints %i.\n", m_NumWayPoints );
			if( !m_autoDirector->value )
			{
				// ignore waypoints
				m_NumWayPoints = 0;
				break;
			}

			SetModes( OBS_ROAMING, -1 );

			m_IsInterpolating = true;

			if( m_NumWayPoints > 2 )
			{
				SetWayInterpolation( NULL, &m_CamPath[0], &m_CamPath[1], &m_CamPath[2] );
			}
			else
			{
				SetWayInterpolation( NULL, &m_CamPath[0], &m_CamPath[1], NULL );
			}
			break;
		default:
			gEngfuncs.Con_DPrintf( "CHudSpectator::DirectorMessage: unknown command %i.\n", cmd );
			break;
	}
}

void CHudSpectator::FindNextPlayer( bool bReverse )
{
	// MOD AUTHORS: Modify the logic of this function if you want to restrict the observer to watching
	//				only a subset of the players. e.g. Make it check the target's team.

	int		iStart;
	cl_entity_t * pEnt = NULL;

	// if we are NOT in HLTV mode, spectator targets are set on server
	if( !gEngfuncs.IsSpectateOnly() )
	{
		char cmdstring[256];
		// forward command to server
		_snprintf( cmdstring, sizeof( cmdstring ) - 1,"follownext %i", bReverse ? 1 : 0 );
		cmdstring[sizeof( cmdstring ) - 1] = '\0';
		gEngfuncs.pfnServerCmd( cmdstring );
		return;
	}

	if( g_iUser2 )
		iStart = g_iUser2;
	else
		iStart = 1;

	g_iUser2 = 0;

	int iCurrent = iStart;

	int iDir = bReverse ? -1 : 1; 

	// make sure we have player info
#if USE_VGUI
	gViewPort->GetAllPlayersInfo();
#else
	gHUD.GetAllPlayersInfo();
#endif
	do
	{
		iCurrent += iDir;

		// Loop through the clients
		if( iCurrent > MAX_PLAYERS )
			iCurrent = 1;
		if( iCurrent < 1 )
			iCurrent = MAX_PLAYERS;

		pEnt = gEngfuncs.GetEntityByIndex( iCurrent );

		if( !IsActivePlayer( pEnt ) )
			continue;

		// MOD AUTHORS: Add checks on target here.
		g_iUser2 = iCurrent;
		break;
	} while( iCurrent != iStart );

	// Did we find a target?
	if( !g_iUser2 )
	{
		gEngfuncs.Con_DPrintf( "No observer targets.\n" );
		// take save camera position 
		VectorCopy( m_cameraOrigin, vJumpOrigin );
		VectorCopy( m_cameraAngles, vJumpAngles );
	}
	else
	{
		// use new entity position for roaming
		VectorCopy( pEnt->origin, vJumpOrigin );
		VectorCopy( pEnt->angles, vJumpAngles );
	}
	iJumpSpectator = 1;
#if USE_VGUI
	gViewPort->MsgFunc_ResetFade( NULL, 0, NULL );
#endif
}

void CHudSpectator::FindPlayer( const char *name )
{
	// MOD AUTHORS: Modify the logic of this function if you want to restrict the observer to watching
	//				only a subset of the players. e.g. Make it check the target's team.

	// if we are NOT in HLTV mode, spectator targets are set on server
	if ( !gEngfuncs.IsSpectateOnly() )
	{
		char cmdstring[256];
		// forward command to server
		_snprintf( cmdstring, sizeof( cmdstring ) - 1, "follow %s", name );
		cmdstring[sizeof( cmdstring ) - 1] = '\0';
		gEngfuncs.pfnServerCmd( cmdstring );
		return;
	}

	g_iUser2 = 0;

	// make sure we have player info
#if USE_VGUI
	gViewPort->GetAllPlayersInfo();
#else
	gHUD.GetAllPlayersInfo();
#endif
	cl_entity_t * pEnt = NULL;

	for (int i = 1; i < MAX_PLAYERS; i++ )
	{

		pEnt = gEngfuncs.GetEntityByIndex( i );

		if ( !IsActivePlayer( pEnt ) )
		continue;

		if(!stricmp(g_PlayerInfoList[pEnt->index].name,name))
		{
			g_iUser2 = i;
			break;
		}

	}

	// Did we find a target?
	if ( !g_iUser2 )
	{
		gEngfuncs.Con_DPrintf( "No observer targets.\n" );
		// take save camera position
		VectorCopy(m_cameraOrigin, vJumpOrigin);
		VectorCopy(m_cameraAngles, vJumpAngles);
	}
	else
	{
		// use new entity position for roaming
		VectorCopy ( pEnt->origin, vJumpOrigin );
		VectorCopy ( pEnt->angles, vJumpAngles );
	}

	iJumpSpectator = 1;
#if USE_VGUI
	gViewPort->MsgFunc_ResetFade( NULL, 0, NULL );
#endif
}

void CHudSpectator::HandleButtonsDown( int ButtonPressed )
{
	double time = gEngfuncs.GetClientTime();

	int newMainMode = g_iUser1;
	int newInsetMode = m_pip->value;

	// gEngfuncs.Con_Printf( " HandleButtons:%i\n", ButtonPressed );

#if USE_VGUI
	if( !gViewPort )
		return;
#endif

	//Not in intermission.
	if( gHUD.m_iIntermission )
		 return;

	if( !g_iUser1 )
		return; // dont do anything if not in spectator mode

	// don't handle buttons during normal demo playback
	if( gEngfuncs.pDemoAPI->IsPlayingback() && !gEngfuncs.IsSpectateOnly() )
		return;
	// Slow down mouse clicks. 
	if( m_flNextObserverInput > time )
		return;

	// enable spectator screen
#if USE_VGUI
	if( ButtonPressed & IN_DUCK )
		gViewPort->m_pSpectatorPanel->ShowMenu( !gViewPort->m_pSpectatorPanel->m_menuVisible );
#endif

	//  'Use' changes inset window mode
	if( ButtonPressed & IN_USE )
	{
		newInsetMode = ToggleInset( true );
	}

	// if not in HLTV mode, buttons are handled server side
	if( gEngfuncs.IsSpectateOnly() )
	{
		// changing target or chase mode not in overviewmode without inset window

		// Jump changes main window modes
		if( ButtonPressed & IN_JUMP )
		{
			if( g_iUser1 == OBS_CHASE_LOCKED )
				newMainMode = OBS_CHASE_FREE;
			else if( g_iUser1 == OBS_CHASE_FREE )
				newMainMode = OBS_IN_EYE;
			else if( g_iUser1 == OBS_IN_EYE )
				newMainMode = OBS_ROAMING;
			else if( g_iUser1 == OBS_ROAMING )
				newMainMode = OBS_MAP_FREE;
			else if( g_iUser1 == OBS_MAP_FREE )
				newMainMode = OBS_MAP_CHASE;
			else
				newMainMode = OBS_CHASE_FREE;	// don't use OBS_CHASE_LOCKED anymore
		}

		// Attack moves to the next player
		if( ButtonPressed & ( IN_ATTACK | IN_ATTACK2 ) )
		{ 
			FindNextPlayer( ( ButtonPressed & IN_ATTACK2 ) ? true : false );

			if( g_iUser1 == OBS_ROAMING )
			{
				gEngfuncs.SetViewAngles( vJumpAngles );
				iJumpSpectator = 1;
			}
			// lease directed mode if player want to see another player
			m_autoDirector->value = 0.0f;
		}
	}

	SetModes( newMainMode, newInsetMode );

	if( g_iUser1 == OBS_MAP_FREE )
	{
		if( ButtonPressed & IN_FORWARD )
			m_zoomDelta = 0.01f;

		if( ButtonPressed & IN_BACK )
			m_zoomDelta = -0.01f;

		if( ButtonPressed & IN_MOVELEFT )
			m_moveDelta = -12.0f;

		if( ButtonPressed & IN_MOVERIGHT )
			m_moveDelta = 12.0f;
	}

	m_flNextObserverInput = time + 0.2;
}

void CHudSpectator::HandleButtonsUp( int ButtonPressed )
{
#if USE_VGUI
	if( !gViewPort )
		return;

	if( !gViewPort->m_pSpectatorPanel->isVisible() )
		return; // dont do anything if not in spectator mode
#endif

	if( ButtonPressed & ( IN_FORWARD | IN_BACK ) )
		m_zoomDelta = 0.0f;

	if( ButtonPressed & ( IN_MOVELEFT | IN_MOVERIGHT ) )
		m_moveDelta = 0.0f;
}

void CHudSpectator::SetModes( int iNewMainMode, int iNewInsetMode )
{
	// if value == -1 keep old value
	if( iNewMainMode == -1 )
		iNewMainMode = g_iUser1;

	if( iNewInsetMode == -1 )
		iNewInsetMode = m_pip->value;

	// inset mode is handled only clients side
	m_pip->value = iNewInsetMode;

	if( iNewMainMode < OBS_CHASE_LOCKED || iNewMainMode > OBS_MAP_CHASE )
	{
		gEngfuncs.Con_Printf( "Invalid spectator mode.\n" );
		return;
	}

	m_IsInterpolating = false;
	m_ChaseEntity = 0;

	// main modes settings will override inset window settings
	if( iNewMainMode != g_iUser1 )
	{
		// if we are NOT in HLTV mode, main spectator mode is set on server
		if( !gEngfuncs.IsSpectateOnly() )
		{
			char cmdstring[256];
			// forward command to server
			_snprintf( cmdstring, sizeof( cmdstring ) - 1,"specmode %i", iNewMainMode );
			cmdstring[sizeof( cmdstring ) - 1] = '\0';
			gEngfuncs.pfnServerCmd( cmdstring );
			return;
		}

		if( !g_iUser2 && ( iNewMainMode != OBS_ROAMING ) )	// make sure we have a target
		{
			// choose last Director object if still available
			if( IsActivePlayer( gEngfuncs.GetEntityByIndex( m_lastPrimaryObject ) ) )
			{
				g_iUser2 = m_lastPrimaryObject;
				g_iUser3 = m_lastSecondaryObject;
			}
			else
				FindNextPlayer( false ); // find any target
		}

		switch( iNewMainMode )
		{
			case OBS_CHASE_LOCKED:
				g_iUser1 = OBS_CHASE_LOCKED;
				break;
			case OBS_CHASE_FREE:
				g_iUser1 = OBS_CHASE_FREE;
				break;
			case OBS_ROAMING:	// jump to current vJumpOrigin/angle
				g_iUser1 = OBS_ROAMING;
				if( g_iUser2 )
				{
					V_GetChasePos( g_iUser2, v_cl_angles, vJumpOrigin, vJumpAngles );
					gEngfuncs.SetViewAngles( vJumpAngles );
					iJumpSpectator = 1;
				}
				break;
			case OBS_IN_EYE:
				g_iUser1 = OBS_IN_EYE;
				break;
			case OBS_MAP_FREE:
				g_iUser1 = OBS_MAP_FREE;
				// reset user values
				m_mapZoom = m_OverviewData.zoom;
				m_mapOrigin = m_OverviewData.origin;
				break;
			case OBS_MAP_CHASE:
				g_iUser1 = OBS_MAP_CHASE;
				// reset user values
				m_mapZoom = m_OverviewData.zoom;
				m_mapOrigin = m_OverviewData.origin;
				break;
		}

		if( ( g_iUser1 == OBS_IN_EYE ) || ( g_iUser1 == OBS_ROAMING ) ) 
		{
			m_crosshairRect.left = 24;
			m_crosshairRect.top = 0;
			m_crosshairRect.right = 48;
			m_crosshairRect.bottom = 24;

			SetCrosshair( m_hCrosshair, m_crosshairRect, 255, 255, 255 );
		}
		else
		{
			memset( &m_crosshairRect, 0, sizeof(m_crosshairRect) );
			SetCrosshair( 0, m_crosshairRect, 0, 0, 0 );
		}

#if USE_VGUI
		gViewPort->MsgFunc_ResetFade( NULL, 0, NULL );
#endif

		char string[128];
		sprintf( string, "#Spec_Mode%d", g_iUser1 );
		sprintf( string, "%c%s", HUD_PRINTCENTER, CHudTextMessage::BufferedLocaliseTextString( string ) );
		gHUD.m_TextMessage.MsgFunc_TextMsg( NULL, strlen( string ) + 1, string );
	}

#if USE_VGUI
	gViewPort->UpdateSpectatorPanel();
#endif
}

bool CHudSpectator::IsActivePlayer( cl_entity_t *ent )
{
	return ( ent &&
			 ent->player &&
			 ent->curstate.solid != SOLID_NOT &&
			 ent != gEngfuncs.GetLocalPlayer() &&
			 g_PlayerInfoList[ent->index].name != NULL
			);
}

bool CHudSpectator::ParseOverviewFile()
{
	char filename[512] = { 0 };
	char levelname[256] = { 0 };
	char token[1024] = { 0 };
	float height;
	bool ret = false;

	char *afile = NULL, *pfile = NULL;

	memset( &m_OverviewData, 0, sizeof(m_OverviewData) );

	// fill in standrd values
	m_OverviewData.insetWindowX = 4;	// upper left corner
	m_OverviewData.insetWindowY = 4;
	m_OverviewData.insetWindowHeight = 180;
	m_OverviewData.insetWindowWidth = 240;
	m_OverviewData.origin[0] = 0.0f;
	m_OverviewData.origin[1] = 0.0f;
	m_OverviewData.origin[2] = 0.0f;
	m_OverviewData.zoom = 1.0f;
	m_OverviewData.layers = 0;
	m_OverviewData.layersHeights[0] = 0.0f;
	strcpy( m_OverviewData.map, gEngfuncs.pfnGetLevelName() );

	if( m_OverviewData.map[0] == '\0' )
		return ret; // not active yet

	strcpy( levelname, m_OverviewData.map + 5 );
	levelname[strlen( levelname ) - 4] = 0;

	sprintf( filename, "overviews/%s.txt", levelname );

	afile = pfile = (char *)gEngfuncs.COM_LoadFile( filename, 5, NULL );

	if( !pfile )
	{
		gEngfuncs.Con_DPrintf( "Couldn't open file %s. Using default values for overiew mode.\n", filename );
		return ret;
	}

	while( true )
	{
		pfile = gEngfuncs.COM_ParseFile( pfile, token );

		if( !pfile )
			break;

		if( !stricmp( token, "global" ) )
		{
			// parse the global data
			pfile = gEngfuncs.COM_ParseFile( pfile, token );
			if( stricmp( token, "{" ) ) 
			{
				gEngfuncs.Con_Printf( "Error parsing overview file %s. (expected { )\n", filename );
				goto end;
			}

			pfile = gEngfuncs.COM_ParseFile( pfile, token );

			while( stricmp( token, "}") )
			{
				if( !stricmp( token, "zoom" ) )
				{
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					m_OverviewData.zoom = atof( token );
				} 
				else if( !stricmp( token, "origin" ) )
				{
					pfile = gEngfuncs.COM_ParseFile( pfile, token ); 
					m_OverviewData.origin[0] = atof( token );
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					m_OverviewData.origin[1] = atof( token );
					pfile = gEngfuncs.COM_ParseFile( pfile, token ); 
					m_OverviewData.origin[2] = atof( token );
				}
				else if( !stricmp( token, "rotated" ) )
				{
					pfile = gEngfuncs.COM_ParseFile( pfile, token ); 
					m_OverviewData.rotated = atoi( token );
				}
				else if( !stricmp( token, "inset" ) )
				{
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					m_OverviewData.insetWindowX = atof( token );
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					m_OverviewData.insetWindowY = atof( token );
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					m_OverviewData.insetWindowWidth = atof( token );
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					m_OverviewData.insetWindowHeight = atof( token );
				}
				else
				{
					gEngfuncs.Con_Printf( "Error parsing overview file %s. (%s unkown)\n", filename, token );
					goto end;
				}

				pfile = gEngfuncs.COM_ParseFile( pfile, token ); // parse next token
			}
		}
		else if( !stricmp( token, "layer" ) )
		{
			// parse a layer data
			if( m_OverviewData.layers == OVERVIEW_MAX_LAYERS )
			{
				gEngfuncs.Con_Printf( "Error parsing overview file %s. ( too many layers )\n", filename );
				goto end;
			}

			pfile = gEngfuncs.COM_ParseFile( pfile, token );

			if( stricmp( token, "{" ) ) 
			{
				gEngfuncs.Con_Printf( "Error parsing overview file %s. (expected { )\n", filename );
				goto end;
			}

			pfile = gEngfuncs.COM_ParseFile( pfile, token );

			while( stricmp( token, "}") )
			{
				if( !stricmp( token, "image" ) )
				{
					pfile = gEngfuncs.COM_ParseFile( pfile, token );
					strcpy( m_OverviewData.layersImages[m_OverviewData.layers], token );
				} 
				else if ( !stricmp( token, "height" ) )
				{
					pfile = gEngfuncs.COM_ParseFile( pfile, token ); 
					height = atof( token );
					m_OverviewData.layersHeights[m_OverviewData.layers] = height;
				}
				else
				{
					gEngfuncs.Con_Printf( "Error parsing overview file %s. (%s unkown)\n", filename, token );
					goto end;
				}

				pfile = gEngfuncs.COM_ParseFile( pfile, token ); // parse next token
			}

			m_OverviewData.layers++;
		}
	}

	m_mapZoom = m_OverviewData.zoom;
	m_mapOrigin = m_OverviewData.origin;

	ret = true;
end:
	gEngfuncs.COM_FreeFile( afile );

	return ret;
}

void CHudSpectator::LoadMapSprites()
{
	// right now only support for one map layer
	if( m_OverviewData.layers > 0 )
	{
		m_MapSprite = gEngfuncs.LoadMapSprite( m_OverviewData.layersImages[0] );
	}
	else
		m_MapSprite = NULL; // the standard "unkown map" sprite will be used instead
}

void CHudSpectator::DrawOverviewLayer()
{
	float screenaspect, xs, ys, xStep, yStep, x, y, z;
	int ix, iy, i, xTiles, yTiles, frame;

	qboolean	 hasMapImage = m_MapSprite ? TRUE : FALSE;
	model_t		*dummySprite = (struct model_s *)gEngfuncs.GetSpritePointer( m_hsprUnkownMap );

	if( hasMapImage )
	{
		i = m_MapSprite->numframes / ( 4 * 3 );
		i = sqrt( float( i ) );
		xTiles = i * 4;
		yTiles = i * 3;
	}
	else
	{
		xTiles = 8;
		yTiles = 6;
	}

	screenaspect = 4.0f / 3.0f;	

	xs = m_OverviewData.origin[0];
	ys = m_OverviewData.origin[1];
	z  = ( 90.0f - v_angles[0] ) / 90.0f;		
	z *= m_OverviewData.layersHeights[0]; // gOverviewData.z_min - 32;	

	// i = r_overviewTexture + ( layer * OVERVIEW_X_TILES * OVERVIEW_Y_TILES );

	gEngfuncs.pTriAPI->RenderMode( kRenderTransTexture );
	gEngfuncs.pTriAPI->CullFace( TRI_NONE );
	gEngfuncs.pTriAPI->Color4f( 1.0f, 1.0f, 1.0f, 1.0f );

	frame = 0;

	// rotated view ?
	if( m_OverviewData.rotated )
	{
		xStep = ( 2 * 4096.0f / m_OverviewData.zoom ) / xTiles;
		yStep = -( 2 * 4096.0f / ( m_OverviewData.zoom* screenaspect ) ) / yTiles;

		y = ys + ( 4096.0f / ( m_OverviewData.zoom * screenaspect ) );

		for( iy = 0; iy < yTiles; iy++ )
		{
			x = xs - ( 4096.0f / (m_OverviewData.zoom ) );

			for( ix = 0; ix < xTiles; ix++ )
			{
				if( hasMapImage )
					gEngfuncs.pTriAPI->SpriteTexture( m_MapSprite, frame );
				else
					gEngfuncs.pTriAPI->SpriteTexture( dummySprite, 0 );

				gEngfuncs.pTriAPI->Begin( TRI_QUADS );
					gEngfuncs.pTriAPI->TexCoord2f( 0, 0 );
					gEngfuncs.pTriAPI->Vertex3f( x, y, z );

					gEngfuncs.pTriAPI->TexCoord2f( 1, 0 );
					gEngfuncs.pTriAPI->Vertex3f( x + xStep, y, z);

					gEngfuncs.pTriAPI->TexCoord2f( 1, 1 );
					gEngfuncs.pTriAPI->Vertex3f( x + xStep, y + yStep, z );

					gEngfuncs.pTriAPI->TexCoord2f( 0, 1 );
					gEngfuncs.pTriAPI->Vertex3f( x, y + yStep, z);
				gEngfuncs.pTriAPI->End();

				frame++;
				x += xStep;
			}

			y += yStep;
		}
	} 
	else
	{
		xStep = -( 2 * 4096.0f / m_OverviewData.zoom ) / xTiles;
		yStep = -( 2 * 4096.0f / ( m_OverviewData.zoom* screenaspect ) ) / yTiles;

		x = xs + ( 4096.0f / ( m_OverviewData.zoom * screenaspect ) );

		for( ix = 0; ix < yTiles; ix++ )
		{
			y = ys + ( 4096.0f / ( m_OverviewData.zoom ) );	

			for( iy = 0; iy < xTiles; iy++ )	
			{
				if( hasMapImage )
					gEngfuncs.pTriAPI->SpriteTexture( m_MapSprite, frame );
				else
					gEngfuncs.pTriAPI->SpriteTexture( dummySprite, 0 );

				gEngfuncs.pTriAPI->Begin( TRI_QUADS );
					gEngfuncs.pTriAPI->TexCoord2f( 0, 0 );
					gEngfuncs.pTriAPI->Vertex3f( x, y, z );

					gEngfuncs.pTriAPI->TexCoord2f( 0, 1 );
					gEngfuncs.pTriAPI->Vertex3f( x + xStep, y, z);

					gEngfuncs.pTriAPI->TexCoord2f( 1, 1 );
					gEngfuncs.pTriAPI->Vertex3f( x + xStep, y + yStep, z );

					gEngfuncs.pTriAPI->TexCoord2f( 1, 0 );
					gEngfuncs.pTriAPI->Vertex3f( x, y + yStep, z );
				gEngfuncs.pTriAPI->End();

				frame++;

				y += yStep;
			}

			x += xStep;
		}
	}
}

void CHudSpectator::DrawOverviewEntities()
{
	int			i, ir, ig, ib;
	struct model_s *hSpriteModel;
	vec3_t			origin, angles, point, forward, right, left, up, world, screen, offset;
	float			x, y, z, r, g, b, sizeScale = 4.0f;
	cl_entity_t *	ent;
	float rmatrix[3][4];	// transformation matrix

	float			zScale = ( 90.0f - v_angles[0] ) / 90.0f;

	z = m_OverviewData.layersHeights[0] * zScale;
	// get yellow/brown HUD color
	UnpackRGB( ir, ig, ib, RGB_YELLOWISH );
	r = (float)ir / 255.0f;
	g = (float)ig / 255.0f;
	b = (float)ib / 255.0f;

	gEngfuncs.pTriAPI->CullFace( TRI_NONE );

	for( i = 0; i < MAX_PLAYERS; i++ )
		m_vPlayerPos[i][2] = -1;	// mark as invisible 

	// draw all players
	for( i = 0; i < MAX_OVERVIEW_ENTITIES; i++ )
	{
		if( !m_OverviewEntities[i].hSprite )
			continue;

		hSpriteModel = (struct model_s *)gEngfuncs.GetSpritePointer( m_OverviewEntities[i].hSprite );
		ent = m_OverviewEntities[i].entity;

		gEngfuncs.pTriAPI->SpriteTexture( hSpriteModel, 0 );
		gEngfuncs.pTriAPI->RenderMode( kRenderTransTexture );

		// see R_DrawSpriteModel
		// draws players sprite
		AngleVectors( ent->angles, right, up, NULL );

		VectorCopy( ent->origin,origin );

		gEngfuncs.pTriAPI->Begin( TRI_QUADS );

		gEngfuncs.pTriAPI->Color4f( 1.0f, 1.0f, 1.0f, 1.0f );

		gEngfuncs.pTriAPI->TexCoord2f(1, 0);
		VectorMA( origin, 16.0f * sizeScale, up, point );
		VectorMA( point, 16.0f * sizeScale, right, point );
		point[2] *= zScale;
		gEngfuncs.pTriAPI->Vertex3fv( point );

		gEngfuncs.pTriAPI->TexCoord2f( 0, 0 );

		VectorMA( origin, 16.0f * sizeScale, up, point );
		VectorMA( point, -16.0f * sizeScale, right, point );
		point[2] *= zScale;
		gEngfuncs.pTriAPI->Vertex3fv( point );

		gEngfuncs.pTriAPI->TexCoord2f( 0, 1 );
		VectorMA( origin, -16.0f * sizeScale, up, point );
		VectorMA( point, -16.0f * sizeScale, right, point );
		point[2] *= zScale;
		gEngfuncs.pTriAPI->Vertex3fv( point );

		gEngfuncs.pTriAPI->TexCoord2f( 1, 1 );
		VectorMA( origin, -16.0f * sizeScale, up, point );
		VectorMA( point, 16.0f * sizeScale, right, point );
		point[2] *= zScale;
		gEngfuncs.pTriAPI->Vertex3fv( point );

		gEngfuncs.pTriAPI->End();

		if( !ent->player )
			continue;

		// draw line under player icons
		origin[2] *= zScale;

		gEngfuncs.pTriAPI->RenderMode( kRenderTransAdd );

		hSpriteModel = (struct model_s *)gEngfuncs.GetSpritePointer( m_hsprBeam );
		gEngfuncs.pTriAPI->SpriteTexture( hSpriteModel, 0 );

		gEngfuncs.pTriAPI->Color4f( r, g, b, 0.3f );

		gEngfuncs.pTriAPI->Begin( TRI_QUADS );
		gEngfuncs.pTriAPI->TexCoord2f( 1.0f, 0.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] + 4.0f, origin[1] + 4.0f, origin[2] - zScale );
		gEngfuncs.pTriAPI->TexCoord2f( 0.0f, 0.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] - 4.0f, origin[1] - 4.0f, origin[2] - zScale );
		gEngfuncs.pTriAPI->TexCoord2f( 0.0f, 1.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] - 4.0f, origin[1] - 4.0f, z );
		gEngfuncs.pTriAPI->TexCoord2f( 1.0f, 1.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] + 4.0f, origin[1] + 4.0f, z );
		gEngfuncs.pTriAPI->End();

		gEngfuncs.pTriAPI->Begin( TRI_QUADS );
		gEngfuncs.pTriAPI->TexCoord2f( 1.0f, 0.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] - 4.0f, origin[1] + 4.0f, origin[2] - zScale );
		gEngfuncs.pTriAPI->TexCoord2f( 0.0f, 0.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] + 4.0f, origin[1] - 4.0f, origin[2] - zScale );
		gEngfuncs.pTriAPI->TexCoord2f( 0.0f, 1.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] + 4.0f, origin[1] - 4.0f, z );
		gEngfuncs.pTriAPI->TexCoord2f( 1.0f, 1.0f );
		gEngfuncs.pTriAPI->Vertex3f( origin[0] - 4.0f, origin[1] + 4.0f, z );
		gEngfuncs.pTriAPI->End();

		// calculate screen position for name and infromation in hud::draw()
		if( gEngfuncs.pTriAPI->WorldToScreen( origin, screen ) )
			continue;	// object is behind viewer

		screen[0] = XPROJECT( screen[0] );
		screen[1] = YPROJECT( screen[1] );
		screen[2] = 0.0f;

		// calculate some offset under the icon
		origin[0] += 32.0f;
		origin[1] += 32.0f;

		gEngfuncs.pTriAPI->WorldToScreen( origin, offset );

		offset[0] = XPROJECT( offset[0] );
		offset[1] = YPROJECT( offset[1] );
		offset[2] = 0.0f;

		VectorSubtract( offset, screen, offset );

		int playerNum = ent->index - 1;

		m_vPlayerPos[playerNum][0] = screen[0];	
		m_vPlayerPos[playerNum][1] = screen[1] + Length( offset );	
		m_vPlayerPos[playerNum][2] = 1;	// mark player as visible 
	}

	if( !m_pip->value || !m_drawcone->value )
		return;

	// get current camera position and angle
	if( m_pip->value == INSET_IN_EYE || g_iUser1 == OBS_IN_EYE )
	{
		V_GetInEyePos( g_iUser2, origin, angles );
	}
	else if( m_pip->value == INSET_CHASE_FREE || g_iUser1 == OBS_CHASE_FREE )
	{
		V_GetChasePos( g_iUser2, v_cl_angles, origin, angles );
	}
	else if( g_iUser1 == OBS_ROAMING )
	{
		VectorCopy( v_sim_org, origin );
		VectorCopy( v_cl_angles, angles );
	}
	else
		V_GetChasePos( g_iUser2, NULL, origin, angles );

	// draw camera sprite
	x = origin[0];
	y = origin[1];
	z = origin[2];

	angles[0] = 0; // always show horizontal camera sprite

	hSpriteModel = (struct model_s *)gEngfuncs.GetSpritePointer( m_hsprCamera );
	gEngfuncs.pTriAPI->RenderMode( kRenderTransAdd );
	gEngfuncs.pTriAPI->SpriteTexture( hSpriteModel, 0 );

	gEngfuncs.pTriAPI->Color4f( r, g, b, 1.0f );

	AngleVectors( angles, forward, NULL, NULL );
	VectorScale( forward, 512.0f, forward );

	offset[0] = 0.0f; 
	offset[1] = 45.0f; 
	offset[2] = 0.0f; 

	AngleMatrix( offset, rmatrix );
	VectorTransform( forward, rmatrix, right );

	offset[1]= -45.0f;
	AngleMatrix( offset, rmatrix );
	VectorTransform( forward, rmatrix , left );

	gEngfuncs.pTriAPI->Begin( TRI_TRIANGLES );
		gEngfuncs.pTriAPI->TexCoord2f( 0.0f, 0.0f );
		gEngfuncs.pTriAPI->Vertex3f( x + right[0], y + right[1], ( z + right[2] ) * zScale);

		gEngfuncs.pTriAPI->TexCoord2f( 0.0f, 1.0f );
		gEngfuncs.pTriAPI->Vertex3f( x, y, z * zScale );

		gEngfuncs.pTriAPI->TexCoord2f( 1.0f, 1.0f );
		gEngfuncs.pTriAPI->Vertex3f( x + left[0], y + left[1], ( z + left[2] ) * zScale );
	gEngfuncs.pTriAPI->End ();
}

void CHudSpectator::DrawOverview()
{
	// draw only in sepctator mode
	if ( !g_iUser1 )
		return;

	// Only draw the overview if Map Mode is selected for this view
	if( m_iDrawCycle == 0 && ( ( g_iUser1 != OBS_MAP_FREE ) && ( g_iUser1 != OBS_MAP_CHASE ) ) ) 
		return;

	if ( m_iDrawCycle == 1 && m_pip->value < INSET_MAP_FREE )
		return;

	DrawOverviewLayer();
	DrawOverviewEntities();
	CheckOverviewEntities();
}

void CHudSpectator::CheckOverviewEntities()
{
	double time = gEngfuncs.GetClientTime();

	// removes old entities from list
	for( int i = 0; i < MAX_OVERVIEW_ENTITIES; i++ )
	{
		// remove entity from list if it is too old
		if( m_OverviewEntities[i].killTime < time )
		{
			memset( &m_OverviewEntities[i], 0, sizeof(overviewEntity_t) );
		}
	}
}

bool CHudSpectator::AddOverviewEntity( int type, struct cl_entity_s *ent, const char *modelname)
{
	HSPRITE	hSprite = 0;
	double  duration = -1.0;	// duration -1 means show it only this frame;

	if( !ent )
		return false;

	if( type == ET_PLAYER )
	{
		if( ent->curstate.solid != SOLID_NOT)
		{
			switch ( g_PlayerExtraInfo[ent->index].teamnumber )
			{
				// blue and red teams are swapped in CS and TFC
				case 1:
					hSprite = m_hsprPlayerBlue;
					break;
				case 2:
					hSprite = m_hsprPlayerRed;
					break;
				default:
					hSprite = m_hsprPlayer;
					break;
			}
		}
		else
			return false;	// it's an spectator
	}
	else if( type == ET_NORMAL )
	{
		return false;
	}
	else
		return false;

	return AddOverviewEntityToList( hSprite, ent, gEngfuncs.GetClientTime() + duration );
}

void CHudSpectator::DeathMessage( int victim )
{
	// find out where the victim is
	cl_entity_t *pl = gEngfuncs.GetEntityByIndex( victim );

	if( pl && pl->player )
		AddOverviewEntityToList(m_hsprPlayerDead, pl, gEngfuncs.GetClientTime() + 2.0f );
}

bool CHudSpectator::AddOverviewEntityToList( HSPRITE sprite, cl_entity_t *ent, double killTime )
{
	for( int i = 0; i < MAX_OVERVIEW_ENTITIES; i++ )
	{
		// find empty entity slot
		if( m_OverviewEntities[i].entity == NULL )
		{
			m_OverviewEntities[i].entity = ent;
			m_OverviewEntities[i].hSprite = sprite;
			m_OverviewEntities[i].killTime = killTime;
			return true;
		}
	}

	return false;	// maximum overview entities reached
}

void CHudSpectator::CheckSettings()
{
	// disallow same inset mode as main mode:
	m_pip->value = (int)m_pip->value;
	
	if( ( g_iUser1 < OBS_MAP_FREE ) && ( m_pip->value == INSET_CHASE_FREE || m_pip->value == INSET_IN_EYE ) )
	{
		// otherwise both would show in World picures
		m_pip->value = INSET_MAP_FREE;
	}

	if( ( g_iUser1 >= OBS_MAP_FREE ) && ( m_pip->value >= INSET_MAP_FREE ) )
	{
		// both would show map views
		m_pip->value = INSET_CHASE_FREE;
	} 

	// disble in intermission screen
	if( gHUD.m_iIntermission )
		m_pip->value = INSET_OFF;

	// check chat mode
	if( m_chatEnabled != (gHUD.m_SayText.m_HUD_saytext->value != 0) )
	{
		// hud_saytext changed
		m_chatEnabled = ( gHUD.m_SayText.m_HUD_saytext->value != 0 );

		if( gEngfuncs.IsSpectateOnly() )
		{
			// tell proxy our new chat mode
			char chatcmd[256];
			_snprintf( chatcmd, sizeof( chatcmd ) - 1, "ignoremsg %i", m_chatEnabled ? 0 : 1 );
			chatcmd[sizeof( chatcmd ) - 1] = '\0';
			gEngfuncs.pfnServerCmd( chatcmd );
		}
	}

	// HL/TFC has no oberserver corsshair, so set it client side
	if( ( g_iUser1 == OBS_IN_EYE ) || ( g_iUser1 == OBS_ROAMING ) ) 
	{
		m_crosshairRect.left = 24;
		m_crosshairRect.top = 0;
		m_crosshairRect.right = 48;
		m_crosshairRect.bottom = 24;
					
		SetCrosshair( m_hCrosshair, m_crosshairRect, 255, 255, 255 );
	}
	else
	{
		memset( &m_crosshairRect, 0, sizeof(m_crosshairRect) );
		SetCrosshair( 0, m_crosshairRect, 0, 0, 0 );
	}

	// if we are a real player on server don't allow inset window
	// in First Person mode since this is our resticted forcecamera mode 2
	// team number 3 = SPECTATOR see player.h

	if( ( ( g_iTeamNumber == 1 ) || ( g_iTeamNumber == 2 ) ) && ( g_iUser1 == OBS_IN_EYE ) )
		m_pip->value = INSET_OFF;

	// draw small border around inset view, adjust upper black bar
#if USE_VGUI
	gViewPort->m_pSpectatorPanel->EnableInsetView( m_pip->value != INSET_OFF );
#endif
}

int CHudSpectator::ToggleInset( bool allowOff )
{
	int newInsetMode = (int)m_pip->value + 1;

	if( g_iUser1 < OBS_MAP_FREE )
	{
		if( newInsetMode > INSET_MAP_CHASE )
		{
			if( allowOff )
				newInsetMode = INSET_OFF;	
			else
				newInsetMode = INSET_MAP_FREE;
		}

		if( newInsetMode == INSET_CHASE_FREE )
			newInsetMode = INSET_MAP_FREE;	
	}
	else
	{
		if( newInsetMode > INSET_IN_EYE )
		{
			if( allowOff )
				newInsetMode = INSET_OFF;
			else
				newInsetMode = INSET_CHASE_FREE;
		}
	}

	return newInsetMode;
}

void CHudSpectator::Reset()
{
	// Reset HUD
	if( strcmp( m_OverviewData.map, gEngfuncs.pfnGetLevelName() ) )
	{
		// update level overview if level changed
		ParseOverviewFile();
		LoadMapSprites();
	}

	memset( &m_OverviewEntities, 0, sizeof(m_OverviewEntities) );

	m_FOV = 90.0f;

	m_IsInterpolating = false;

	m_ChaseEntity = 0;

	SetSpectatorStartPosition();
}

void CHudSpectator::InitHUDData()
{
	m_lastPrimaryObject = m_lastSecondaryObject = 0;
	m_flNextObserverInput = 0.0f;
	m_lastHudMessage = 0;
	m_iSpectatorNumber = 0;
	iJumpSpectator = 0;
	g_iUser1 = g_iUser2 = 0;

	memset( &m_OverviewData, 0, sizeof(m_OverviewData));
	memset( &m_OverviewEntities, 0, sizeof(m_OverviewEntities));

	if( gEngfuncs.IsSpectateOnly() || gEngfuncs.pDemoAPI->IsPlayingback() )
		m_autoDirector->value = 1.0f;
	else
		m_autoDirector->value = 0.0f;

	Reset();

	SetModes( OBS_CHASE_LOCKED, INSET_OFF );

	g_iUser2 = 0; // fake not target until first camera command

	// reset HUD FOV
	gHUD.m_iFOV =  CVAR_GET_FLOAT( "default_fov" );
}