455 lines
14 KiB
C++
455 lines
14 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================
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#include "cbase.h"
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#include "info_darknessmode_lightsource.h"
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#include "ai_debug_shared.h"
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void CV_Debug_Darkness( IConVar *var, const char *pOldString, float flOldValue );
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ConVar g_debug_darkness( "g_debug_darkness", "0", FCVAR_NONE, "Show darkness mode lightsources.", CV_Debug_Darkness );
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ConVar darkness_ignore_LOS_to_sources( "darkness_ignore_LOS_to_sources", "1", FCVAR_NONE );
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class CInfoDarknessLightSource;
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//-----------------------------------------------------------------------------
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// Purpose: Manages entities that provide light while in darkness mode
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//-----------------------------------------------------------------------------
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class CDarknessLightSourcesSystem : public CAutoGameSystem
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{
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public:
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CDarknessLightSourcesSystem() : CAutoGameSystem( "CDarknessLightSourcesSystem" )
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{
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}
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void LevelInitPreEntity();
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void AddLightSource( CInfoDarknessLightSource *pEntity, float flRadius );
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void RemoveLightSource( CInfoDarknessLightSource *pEntity );
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bool IsEntityVisibleToTarget( CBaseEntity *pLooker, CBaseEntity *pTarget );
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bool AreThereLightSourcesWithinRadius( CBaseEntity *pLooker, float flRadius );
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void SetDebug( bool bDebug );
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private:
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struct lightsource_t
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{
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float flLightRadiusSqr;
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CHandle<CInfoDarknessLightSource> hEntity;
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};
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CUtlVector<lightsource_t> m_LightSources;
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};
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CDarknessLightSourcesSystem *DarknessLightSourcesSystem();
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//-----------------------------------------------------------------------------
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// Darkness mode light source entity
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//-----------------------------------------------------------------------------
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class CInfoDarknessLightSource : public CBaseEntity
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{
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DECLARE_CLASS( CInfoDarknessLightSource, CBaseEntity );
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public:
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DECLARE_DATADESC();
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virtual void Activate()
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{
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if ( m_bDisabled == false )
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{
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DarknessLightSourcesSystem()->AddLightSource( this, m_flLightRadius );
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if ( g_debug_darkness.GetBool() )
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{
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SetThink( &CInfoDarknessLightSource::DebugThink );
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SetNextThink( gpGlobals->curtime );
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}
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}
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BaseClass::Activate();
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}
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virtual void UpdateOnRemove()
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{
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DarknessLightSourcesSystem()->RemoveLightSource( this );
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BaseClass::UpdateOnRemove();
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}
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void SetLightRadius( float flRadius )
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{
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m_flLightRadius = flRadius;
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}
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void InputEnable( inputdata_t &inputdata )
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{
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DarknessLightSourcesSystem()->AddLightSource( this, m_flLightRadius );
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m_bDisabled = false;
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}
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void InputDisable( inputdata_t &inputdata )
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{
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DarknessLightSourcesSystem()->RemoveLightSource( this );
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m_bDisabled = true;
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}
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void DebugThink( void )
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{
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Vector vecRadius( m_flLightRadius, m_flLightRadius, m_flLightRadius );
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NDebugOverlay::Box( GetAbsOrigin(), -vecRadius, vecRadius, 255,255,255, 8, 0.1 );
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NDebugOverlay::Box( GetAbsOrigin(), -Vector(5,5,5), Vector(5,5,5), 255,0,0, 8, 0.1 );
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SetNextThink( gpGlobals->curtime + 0.1 );
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int textoffset = 0;
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EntityText( textoffset, UTIL_VarArgs("Org: %.2f %.2f %.2f", GetAbsOrigin().x, GetAbsOrigin().y, GetAbsOrigin().z ), 0.1 );
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textoffset++;
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EntityText( textoffset, UTIL_VarArgs("Radius %.2f", m_flLightRadius), 0.1 );
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textoffset++;
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if ( m_bIgnoreLOS )
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{
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EntityText( textoffset, "Ignoring LOS", 0.1 );
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textoffset++;
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}
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if ( m_bDisabled )
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{
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EntityText( textoffset, "DISABLED", 0.1 );
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textoffset++;
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}
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}
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void IgnoreLOS( void )
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{
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m_bIgnoreLOS = true;
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}
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bool ShouldIgnoreLOS( void )
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{
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return m_bIgnoreLOS;
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}
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private:
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float m_flLightRadius;
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bool m_bDisabled;
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bool m_bIgnoreLOS;
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};
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LINK_ENTITY_TO_CLASS( info_darknessmode_lightsource, CInfoDarknessLightSource );
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BEGIN_DATADESC( CInfoDarknessLightSource )
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DEFINE_KEYFIELD( m_flLightRadius, FIELD_FLOAT, "LightRadius" ),
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DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),
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DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),
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DEFINE_KEYFIELD( m_bDisabled, FIELD_BOOLEAN, "StartDisabled" ),
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DEFINE_FIELD( m_bIgnoreLOS, FIELD_BOOLEAN ),
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DEFINE_THINKFUNC( DebugThink ),
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END_DATADESC()
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CDarknessLightSourcesSystem g_DarknessLightSourcesSystem;
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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CDarknessLightSourcesSystem *DarknessLightSourcesSystem()
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{
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return &g_DarknessLightSourcesSystem;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDarknessLightSourcesSystem::LevelInitPreEntity()
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{
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m_LightSources.Purge();
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDarknessLightSourcesSystem::AddLightSource( CInfoDarknessLightSource *pEntity, float flRadius )
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{
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lightsource_t sNewSource;
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sNewSource.hEntity = pEntity;
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sNewSource.flLightRadiusSqr = flRadius * flRadius;
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m_LightSources.AddToTail( sNewSource );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDarknessLightSourcesSystem::RemoveLightSource( CInfoDarknessLightSource *pEntity )
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{
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for ( int i = m_LightSources.Count() - 1; i >= 0; i-- )
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{
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if ( m_LightSources[i].hEntity == pEntity )
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{
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m_LightSources.Remove(i);
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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bool CDarknessLightSourcesSystem::IsEntityVisibleToTarget( CBaseEntity *pLooker, CBaseEntity *pTarget )
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{
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if ( pTarget->IsEffectActive( EF_BRIGHTLIGHT ) || pTarget->IsEffectActive( EF_DIMLIGHT ) )
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return true;
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bool bDebug = g_debug_darkness.GetBool();
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if ( bDebug && pLooker )
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{
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bDebug = (pLooker->m_debugOverlays & OVERLAY_NPC_SELECTED_BIT) != 0;
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}
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trace_t tr;
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// Loop through all the light sources. Do it backwards, so we can remove dead ones.
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for ( int i = m_LightSources.Count() - 1; i >= 0; i-- )
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{
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// Removed?
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if ( m_LightSources[i].hEntity == NULL || m_LightSources[i].hEntity->IsMarkedForDeletion() )
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{
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m_LightSources.FastRemove( i );
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continue;
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}
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CInfoDarknessLightSource *pLightSource = m_LightSources[i].hEntity;
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// Close enough to a light source?
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float flDistanceSqr = (pTarget->WorldSpaceCenter() - pLightSource->GetAbsOrigin()).LengthSqr();
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if ( flDistanceSqr < m_LightSources[i].flLightRadiusSqr )
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{
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if ( pLightSource->ShouldIgnoreLOS() )
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{
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if ( bDebug )
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{
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NDebugOverlay::Line( pTarget->WorldSpaceCenter(), pLightSource->GetAbsOrigin(), 0,255,0,true, 0.1);
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}
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return true;
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}
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// Check LOS from the light to the target
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CTraceFilterSkipTwoEntities filter( pTarget, pLooker, COLLISION_GROUP_NONE );
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AI_TraceLine( pTarget->WorldSpaceCenter(), pLightSource->GetAbsOrigin(), MASK_BLOCKLOS, &filter, &tr );
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if ( tr.fraction == 1.0 )
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{
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if ( bDebug )
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{
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NDebugOverlay::Line( tr.startpos, tr.endpos, 0,255,0,true, 0.1);
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}
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return true;
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}
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if ( bDebug )
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{
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NDebugOverlay::Line( tr.startpos, tr.endpos, 255,0,0,true, 0.1);
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NDebugOverlay::Line( tr.endpos, pLightSource->GetAbsOrigin(), 128,0,0,true, 0.1);
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}
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// If the target is within the radius of the light, don't do sillhouette checks
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continue;
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}
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if ( !pLooker )
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continue;
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// Between a light source and the looker?
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Vector vecLookerToLight = (pLightSource->GetAbsOrigin() - pLooker->WorldSpaceCenter());
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Vector vecLookerToTarget = (pTarget->WorldSpaceCenter() - pLooker->WorldSpaceCenter());
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float flDistToSource = VectorNormalize( vecLookerToLight );
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float flDistToTarget = VectorNormalize( vecLookerToTarget );
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float flDot = DotProduct( vecLookerToLight, vecLookerToTarget );
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if ( flDot > 0 )
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{
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// Make sure the target is in front of the lightsource
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if ( flDistToTarget < flDistToSource )
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{
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if ( bDebug )
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{
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NDebugOverlay::Line( pLooker->WorldSpaceCenter(), pLooker->WorldSpaceCenter() + (vecLookerToLight * 128), 255,255,255,true, 0.1);
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NDebugOverlay::Line( pLooker->WorldSpaceCenter(), pLooker->WorldSpaceCenter() + (vecLookerToTarget * 128), 255,0,0,true, 0.1);
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}
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// Now, we need to find out if the light source is obscured by anything.
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// To do this, we want to calculate the point of intersection between the light source
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// sphere and the line from the looker through the target.
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float flASqr = (flDistToSource * flDistToSource);
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float flB = -2 * flDistToSource * flDot;
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float flCSqr = m_LightSources[i].flLightRadiusSqr;
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float flDesc = (flB * flB) - (4 * (flASqr - flCSqr));
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if ( flDesc >= 0 )
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{
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float flLength = (-flB - sqrt(flDesc)) / 2;
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Vector vecSpherePoint = pLooker->WorldSpaceCenter() + (vecLookerToTarget * flLength);
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// We've got the point of intersection. See if we can see it.
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CTraceFilterSkipTwoEntities filter( pTarget, pLooker, COLLISION_GROUP_NONE );
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AI_TraceLine( pLooker->EyePosition(), vecSpherePoint, MASK_SOLID_BRUSHONLY, &filter, &tr );
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if ( bDebug )
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{
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if (tr.fraction != 1.0)
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{
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NDebugOverlay::Line( pLooker->WorldSpaceCenter(), vecSpherePoint, 255,0,0,true, 0.1);
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}
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else
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{
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NDebugOverlay::Line( pLooker->WorldSpaceCenter(), vecSpherePoint, 0,255,0,true, 0.1);
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NDebugOverlay::Line( pLightSource->GetAbsOrigin(), vecSpherePoint, 255,0,0,true, 0.1);
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}
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}
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if ( tr.fraction == 1.0 )
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return true;
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}
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}
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}
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}
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return false;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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bool CDarknessLightSourcesSystem::AreThereLightSourcesWithinRadius( CBaseEntity *pLooker, float flRadius )
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{
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float flRadiusSqr = (flRadius * flRadius);
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for ( int i = m_LightSources.Count() - 1; i >= 0; i-- )
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{
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// Removed?
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if ( m_LightSources[i].hEntity == NULL || m_LightSources[i].hEntity->IsMarkedForDeletion() )
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{
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m_LightSources.FastRemove( i );
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continue;
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}
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CBaseEntity *pLightSource = m_LightSources[i].hEntity;
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// Close enough to a light source?
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float flDistanceSqr = (pLooker->WorldSpaceCenter() - pLightSource->GetAbsOrigin()).LengthSqr();
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if ( flDistanceSqr < flRadiusSqr )
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{
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trace_t tr;
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AI_TraceLine( pLooker->EyePosition(), pLightSource->GetAbsOrigin(), MASK_SOLID_BRUSHONLY, pLooker, COLLISION_GROUP_NONE, &tr );
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if ( g_debug_darkness.GetBool() )
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{
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if (tr.fraction != 1.0)
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{
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NDebugOverlay::Line( pLooker->WorldSpaceCenter(), tr.endpos, 255,0,0,true, 0.1);
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}
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else
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{
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NDebugOverlay::Line( pLooker->WorldSpaceCenter(), tr.endpos, 0,255,0,true, 0.1);
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NDebugOverlay::Line( pLightSource->GetAbsOrigin(), tr.endpos, 255,0,0,true, 0.1);
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}
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}
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if ( tr.fraction == 1.0 )
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return true;
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}
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}
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return false;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDarknessLightSourcesSystem::SetDebug( bool bDebug )
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{
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for ( int i = m_LightSources.Count() - 1; i >= 0; i-- )
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{
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CInfoDarknessLightSource *pLightSource = dynamic_cast<CInfoDarknessLightSource*>(m_LightSources[i].hEntity.Get());
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if ( pLightSource )
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{
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if ( bDebug )
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{
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pLightSource->SetThink( &CInfoDarknessLightSource::DebugThink );
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pLightSource->SetNextThink( gpGlobals->curtime );
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}
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else
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{
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pLightSource->SetThink( NULL );
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}
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CV_Debug_Darkness( IConVar *pConVar, const char *pOldString, float flOldValue )
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{
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ConVarRef var( pConVar );
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DarknessLightSourcesSystem()->SetDebug( var.GetBool() );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *pEntity -
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//-----------------------------------------------------------------------------
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void AddEntityToDarknessCheck( CBaseEntity *pEntity, float flLightRadius /*=DARKNESS_LIGHTSOURCE_SIZE*/ )
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{
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// Create a light source, and attach it to the entity
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CInfoDarknessLightSource *pLightSource = (CInfoDarknessLightSource *) CreateEntityByName( "info_darknessmode_lightsource" );
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if ( pLightSource )
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{
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pLightSource->SetLightRadius( flLightRadius );
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DispatchSpawn( pLightSource );
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pLightSource->SetAbsOrigin( pEntity->WorldSpaceCenter() );
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pLightSource->SetParent( pEntity );
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pLightSource->Activate();
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// Dynamically created darkness sources can ignore LOS
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// to match the (broken) visual representation of our dynamic lights.
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if ( darkness_ignore_LOS_to_sources.GetBool() )
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{
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pLightSource->IgnoreLOS();
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *pEntity -
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//-----------------------------------------------------------------------------
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void RemoveEntityFromDarknessCheck( CBaseEntity *pEntity )
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{
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// Find any light sources parented to this entity, and remove them
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CBaseEntity *pChild = pEntity->FirstMoveChild();
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while ( pChild )
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{
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CBaseEntity *pPrevChild = pChild;
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pChild = pChild->NextMovePeer();
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if ( dynamic_cast<CInfoDarknessLightSource*>(pPrevChild) )
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{
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UTIL_Remove( pPrevChild );
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *pEntity -
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//-----------------------------------------------------------------------------
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bool LookerCouldSeeTargetInDarkness( CBaseEntity *pLooker, CBaseEntity *pTarget )
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{
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if ( DarknessLightSourcesSystem()->IsEntityVisibleToTarget( pLooker, pTarget ) )
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{
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//NDebugOverlay::Line( pTarget->WorldSpaceCenter(), pLooker->WorldSpaceCenter(), 0,255,0,true, 0.1);
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return true;
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}
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return false;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Return true if there is at least 1 darkness light source within
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// the specified radius of the looker.
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//-----------------------------------------------------------------------------
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bool DarknessLightSourceWithinRadius( CBaseEntity *pLooker, float flRadius )
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{
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return DarknessLightSourcesSystem()->AreThereLightSourcesWithinRadius( pLooker, flRadius );
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}
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