source-engine/game/server/tf/tf_hltvdirector.cpp

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: 
//
// $NoKeywords: $
//
//=============================================================================//

#include "cbase.h"
#include "hltvdirector.h"
#include "team_control_point.h"


CBaseEntity* GetCapturePointByIndex( int iCaptureIndex )
{
	CTeamControlPoint *pTeamControlPoint = (CTeamControlPoint *)gEntList.FindEntityByClassname( NULL, "team_control_point" );

	while ( pTeamControlPoint )
	{
		if ( pTeamControlPoint->GetPointIndex() == iCaptureIndex )
		{
			return pTeamControlPoint;
		}

		pTeamControlPoint = (CTeamControlPoint *)gEntList.FindEntityByClassname( pTeamControlPoint, "team_control_point" );
	}

	return NULL;
}

class CTFHLTVDirector : public CHLTVDirector
{
public:
	DECLARE_CLASS( CTFHLTVDirector, CHLTVDirector );

	const char** GetModEvents();
	void SetHLTVServer( IHLTVServer *hltv );
	void CreateShotFromEvent( CHLTVGameEvent *event );

	virtual char	*GetFixedCameraEntityName( void ) { return "info_observer_point"; }
};

void CTFHLTVDirector::SetHLTVServer( IHLTVServer *hltv )
{
	BaseClass::SetHLTVServer( hltv );

	if ( m_pHLTVServer )
	{
		// mod specific events the director uses to find interesting shots
		ListenForGameEvent( "teamplay_point_captured" );
		ListenForGameEvent( "teamplay_capture_blocked" );
		ListenForGameEvent( "teamplay_point_startcapture" );
		ListenForGameEvent( "teamplay_flag_event" );
		ListenForGameEvent( "ctf_flag_captured" );
	}
}

void CTFHLTVDirector::CreateShotFromEvent( CHLTVGameEvent *event )
{
	// show event at least for 2 more seconds after it occured
	const char *name = event->m_Event->GetName();

	int thera = RandomFloat()>0.5?20:-20;

	if ( !Q_strcmp( "teamplay_point_startcapture", name ) || 
		 !Q_strcmp( "teamplay_point_captured", name ) ||
		 !Q_strcmp( "teamplay_capture_blocked", name ) )
	{
		CBaseEntity *pCapturePoint = GetCapturePointByIndex( event->m_Event->GetInt( "cp" ) );

		int iCameraIndex = -1;
		float flClosest = 99999.9f;
		
		if ( pCapturePoint )
		{
			// Does it have an associated viewpoint?
			for ( int i = 0; i<m_nNumFixedCameras; i++ )
			{
				CBaseEntity *pCamera = m_pFixedCameras[ i ];
		
				if ( pCamera )
				{
					byte pvs[MAX_MAP_CLUSTERS/8];
					int clusterIndex = engine->GetClusterForOrigin( pCamera->GetAbsOrigin() );
					engine->GetPVSForCluster( clusterIndex, sizeof(pvs), pvs );
					bool bCameraInPVS = engine->CheckOriginInPVS( pCapturePoint->GetAbsOrigin(), pvs, sizeof( pvs ) );

					if ( bCameraInPVS == true )
					{
						float flDistance = (pCapturePoint->GetAbsOrigin() - pCamera->GetAbsOrigin()).Length();
						if ( flDistance <= flClosest )
						{
							iCameraIndex = i;
							flClosest = flDistance;
						}
					}
				}
			}
		}

		CBasePlayer *pPlayer = NULL;

		if ( !Q_strcmp( "teamplay_point_captured", name ) )
		{
			const char *pszCappers = event->m_Event->GetString("cappers");
			int nLength = Q_strlen(pszCappers);

			if ( nLength > 0 )
			{
				int iRandomCapper = pszCappers[ RandomInt(0,nLength-1) ];
				pPlayer = UTIL_PlayerByIndex( iRandomCapper );
			}
		}
		else if ( !Q_strcmp( "teamplay_capture_blocked", name ) )
		{
			int iBlocker = event->m_Event->GetInt("blocker");
			pPlayer = UTIL_PlayerByIndex( iBlocker );
		}

		if ( pPlayer )
		{
			if ( iCameraIndex >= 0 && RandomFloat() > 0.66f )
			{
				StartFixedCameraShot( iCameraIndex, pPlayer->entindex() );
			}
			else if ( pCapturePoint )
			{
				StartChaseCameraShot( pPlayer->entindex(), pCapturePoint->entindex(), 96, 20, thera, false );
			}
			else
			{
				StartChaseCameraShot( pPlayer->entindex(), 0, 96, 20, 0, false );
			}
		}
		else if ( iCameraIndex >= 0 && pCapturePoint )
		{
			// no player known for this event
			StartFixedCameraShot( iCameraIndex, pCapturePoint->entindex() );
		}

		// shot 2 seconds after event
		m_nNextShotTick = MIN( m_nNextShotTick, (event->m_Tick+TIME_TO_TICKS(1.0)) );
	}
	else if ( !Q_strcmp( "object_destroyed", name ) )
	{
		CBasePlayer *attacker = UTIL_PlayerByUserId( event->m_Event->GetInt("attacker") );
		if ( attacker )
		{
			int iObjectIndex = event->m_Event->GetInt("index");
			StartChaseCameraShot( attacker->entindex(), iObjectIndex, 96, 20, thera, false );
		}
	}
	else if ( !Q_strcmp( "ctf_flag_captured", name ) )
	{
		CBasePlayer *capper = UTIL_PlayerByUserId( event->m_Event->GetInt("capper") );
		if ( capper )
		{
			StartChaseCameraShot( capper->entindex(), 0, 96, 20, 0, false );
		}
	}
	else if ( !Q_strcmp( "teamplay_flag_event", name ) )
	{
		StartChaseCameraShot( event->m_Event->GetInt("player"), 0, 96, 20, 0, false );
	}
	else
	{

		// let baseclass create a shot
		BaseClass::CreateShotFromEvent( event );
	}
}

const char** CTFHLTVDirector::GetModEvents()
{
	// game events relayed to spectator clients
	static const char *s_modevents[] =
	{
		"game_newmap",
		"hltv_status",
		"hltv_chat",
		"player_connect",
		"player_disconnect",
		"player_changeclass",
		"player_team",
		"player_info",
		"player_death",
		"player_chat",
		"player_spawn",
		"round_start",
		"round_end",
		"server_cvar",
		"server_spawn",
				
		// additional TF events:
		"controlpoint_starttouch",
		"controlpoint_endtouch",
		"ctf_flag_captured",
		"teamplay_broadcast_audio",
		"teamplay_capture_blocked",
		"teamplay_flag_event",
		"teamplay_game_over",
		"teamplay_point_captured",
		"teamplay_round_stalemate",
		"teamplay_round_start",
		"teamplay_round_win",
		"teamplay_timer_time_added",
		"teamplay_update_timer",
		"teamplay_win_panel",
		"training_complete",
		"tf_game_over",
		"object_destroyed",
			
		NULL
	};

	return s_modevents;
}

static CTFHLTVDirector s_HLTVDirector;	// singleton

EXPOSE_SINGLE_INTERFACE_GLOBALVAR( CHLTVDirector, IHLTVDirector, INTERFACEVERSION_HLTVDIRECTOR, s_HLTVDirector );

CHLTVDirector* HLTVDirector()
{
	return &s_HLTVDirector;
}

IGameSystem* HLTVDirectorSystem()
{
	return &s_HLTVDirector;
}