//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
bool CBaseCombatCharacter::IsAbleToSee( const CBaseEntity *pEntity, FieldOfViewCheckType checkFOV )
{
CBaseCombatCharacter *pBCC = const_cast<CBaseEntity *>( pEntity )->MyCombatCharacterPointer();
if ( pBCC )
return IsAbleToSee( pBCC, checkFOV );
// Test this every time; it's cheap.
Vector vecEyePosition = EyePosition();
Vector vecTargetPosition = pEntity->WorldSpaceCenter();
#ifdef GAME_DLL
Vector vecEyeToTarget;
VectorSubtract( vecTargetPosition, vecEyePosition, vecEyeToTarget );
float flDistToOther = VectorNormalize( vecEyeToTarget );
// We can't see because they are too far in the fog
if ( IsHiddenByFog( flDistToOther ) )
return false;
#endif
if ( !ComputeLOS( vecEyePosition, vecTargetPosition ) )
return false;
return ( checkFOV != USE_FOV || IsInFieldOfView( vecTargetPosition ) );
}
bool CBaseCombatCharacter::IsAbleToSee( CBaseCombatCharacter *pBCC, FieldOfViewCheckType checkFOV )
{
Vector vecEyePosition, vecOtherEyePosition;
ComputeSeeTestPosition( &vecEyePosition, this );
ComputeSeeTestPosition( &vecOtherEyePosition, pBCC );
#ifdef GAME_DLL
Vector vecEyeToTarget;
VectorSubtract( vecOtherEyePosition, vecEyePosition, vecEyeToTarget );
float flDistToOther = VectorNormalize( vecEyeToTarget );
// Test this every time; it's cheap.
// We can't see because they are too far in the fog
if ( IsHiddenByFog( flDistToOther ) )
return false;
#endif
// Check if we have a cached-off visibility
int iCache = s_CombatCharVisCache.LookupVisibility( this, pBCC );
VisCacheResult_t nResult = s_CombatCharVisCache.HasVisibility( iCache );
// Compute symmetric visibility
if ( nResult == VISCACHE_UNKNOWN )
{
bool bThisCanSeeOther = false, bOtherCanSeeThis = false;
if ( ComputeLOS( vecEyePosition, vecOtherEyePosition ) )
{
bThisCanSeeOther = true, bOtherCanSeeThis = true;
}
s_CombatCharVisCache.RegisterVisibility( iCache, bThisCanSeeOther, bOtherCanSeeThis );
nResult = bThisCanSeeOther ? VISCACHE_IS_VISIBLE : VISCACHE_IS_NOT_VISIBLE;
}
if ( nResult == VISCACHE_IS_VISIBLE )
return ( checkFOV != USE_FOV || IsInFieldOfView( pBCC ) );
return false;
}
bool CBaseCombatCharacter::IsAbleToSee( const CBaseEntity *pEntity, FieldOfViewCheckType checkFOV )
{
CBaseCombatCharacter *pBCC = const_cast<CBaseEntity *>( pEntity )->MyCombatCharacterPointer();
if ( pBCC )
return IsAbleToSee( pBCC, checkFOV );
// Test this every time; it's cheap.
Vector vecEyePosition = EyePosition();
Vector vecTargetPosition = pEntity->WorldSpaceCenter();
#ifdef GAME_DLL
Vector vecEyeToTarget;
VectorSubtract( vecTargetPosition, vecEyePosition, vecEyeToTarget );
float flDistToOther = VectorNormalize( vecEyeToTarget );
// We can't see because they are too far in the fog
if ( IsHiddenByFog( flDistToOther ) )
return false;
#endif
if ( !ComputeLOS( vecEyePosition, vecTargetPosition ) )
return false;
#if defined(GAME_DLL) && defined(TERROR)
if ( flDistToOther > NavObscureRange.GetFloat() )
{
const float flMaxDistance = 100.0f;
TerrorNavArea *pTargetArea = static_cast< TerrorNavArea* >( TheNavMesh->GetNearestNavArea( vecTargetPosition, false, flMaxDistance ) );
if ( !pTargetArea || pTargetArea->HasSpawnAttributes( TerrorNavArea::SPAWN_OBSCURED ) )
return false;
if ( ComputeTargetIsInDarkness( vecEyePosition, pTargetArea, vecTargetPosition ) )
return false;
}
#endif
return ( checkFOV != USE_FOV || IsInFieldOfView( vecTargetPosition ) );
}
bool CBaseCombatCharacter::IsAbleToSee( CBaseCombatCharacter *pBCC, FieldOfViewCheckType checkFOV )
{
Vector vecEyePosition, vecOtherEyePosition;
ComputeSeeTestPosition( &vecEyePosition, this );
ComputeSeeTestPosition( &vecOtherEyePosition, pBCC );
#ifdef GAME_DLL
Vector vecEyeToTarget;
VectorSubtract( vecOtherEyePosition, vecEyePosition, vecEyeToTarget );
float flDistToOther = VectorNormalize( vecEyeToTarget );
// Test this every time; it's cheap.
// We can't see because they are too far in the fog
if ( IsHiddenByFog( flDistToOther ) )
return false;
#ifdef TERROR
// Check this every time also, it's cheap; check to see if the enemy is in an obscured area.
bool bIsInNavObscureRange = ( flDistToOther > NavObscureRange.GetFloat() );
if ( bIsInNavObscureRange )
{
TerrorNavArea *pOtherNavArea = static_cast< TerrorNavArea* >( pBCC->GetLastKnownArea() );
if ( !pOtherNavArea || pOtherNavArea->HasSpawnAttributes( TerrorNavArea::SPAWN_OBSCURED ) )
return false;
}
#endif // TERROR
#endif
// Check if we have a cached-off visibility
int iCache = s_CombatCharVisCache.LookupVisibility( this, pBCC );
VisCacheResult_t nResult = s_CombatCharVisCache.HasVisibility( iCache );
// Compute symmetric visibility
if ( nResult == VISCACHE_UNKNOWN )
{
bool bThisCanSeeOther = false, bOtherCanSeeThis = false;
if ( ComputeLOS( vecEyePosition, vecOtherEyePosition ) )
{
#if defined(GAME_DLL) && defined(TERROR)
if ( !bIsInNavObscureRange )
{
bThisCanSeeOther = true, bOtherCanSeeThis = true;
}
else
{
bThisCanSeeOther = !ComputeTargetIsInDarkness( vecEyePosition, pBCC->GetLastKnownArea(), vecOtherEyePosition );
bOtherCanSeeThis = !ComputeTargetIsInDarkness( vecOtherEyePosition, GetLastKnownArea(), vecEyePosition );
}
#else
bThisCanSeeOther = true, bOtherCanSeeThis = true;
#endif
}
s_CombatCharVisCache.RegisterVisibility( iCache, bThisCanSeeOther, bOtherCanSeeThis );
nResult = bThisCanSeeOther ? VISCACHE_IS_VISIBLE : VISCACHE_IS_NOT_VISIBLE;
}
if ( nResult == VISCACHE_IS_VISIBLE )
return ( checkFOV != USE_FOV || IsInFieldOfView( pBCC ) );
return false;
}
