void UTIL_TraceEntity( CBaseEntity *pEntity, const Vector &vecAbsStart, const Vector &vecAbsEnd,
unsigned int mask, ITraceFilter *pFilter, trace_t *ptr )
{
ICollideable *pCollision = VFuncs::GetCollideable(pEntity);
// Adding this assertion here so game code catches it, but really the assertion belongs in the engine
// because one day, rotated collideables will work!
Assert( pCollision->GetCollisionAngles() == vec3_angle );
enginetrace->SweepCollideable( pCollision, vecAbsStart, vecAbsEnd, pCollision->GetCollisionAngles(), mask, pFilter, ptr );
}
//-----------------------------------------------------------------------------
// Sweeps a particular entity through the world
//-----------------------------------------------------------------------------
void UTIL_TraceEntity( CBaseEntity *pEntity, const Vector &vecAbsStart, const Vector &vecAbsEnd, unsigned int mask, trace_t *ptr )
{
ICollideable *pCollision = pEntity->GetCollideable();
// Adding this assertion here so game code catches it, but really the assertion belongs in the engine
// because one day, rotated collideables will work!
Assert( pCollision->GetCollisionAngles() == vec3_angle );
CTraceFilterEntity traceFilter( pEntity, pCollision->GetCollisionGroup() );
#ifdef PORTAL
UTIL_Portal_TraceEntity( pEntity, vecAbsStart, vecAbsEnd, mask, &traceFilter, ptr );
#else
enginetrace->SweepCollideable( pCollision, vecAbsStart, vecAbsEnd, pCollision->GetCollisionAngles(), mask, &traceFilter, ptr );
#endif
}
bool CFuncBulletShield::TestCollision( const Ray_t &ray, unsigned int mask, trace_t& trace )
{
// ignore unless a shot
if ((mask & MASK_SHOT) == MASK_SHOT)
{
// use obb collision
ICollideable *pCol = GetCollideable();
Assert(pCol);
return IntersectRayWithOBB(ray,pCol->GetCollisionOrigin(),pCol->GetCollisionAngles(),
pCol->OBBMins(),pCol->OBBMaxs(),1.0f,&trace);
/*
const model_t *pModel = this->GetCollisionModel();
if ( pModel && pModel->type == mod_brush )
{
int nModelIndex = this->GetCollisionModelIndex();
cmodel_t *pCModel = CM_InlineModelNumber( nModelIndex - 1 );
int nHeadNode = pCModel->headnode;
CM_TransformedBoxTrace( ray, nHeadNode, fMask, this->GetCollisionOrigin(), this->GetCollisionAngles(), *pTrace );
return true;
}
return false;
*/
// return BaseClass::TestCollision( ray, mask, trace );
}
else
return false;
}
IterationRetval_t EnumElement( IHandleEntity *pHandleEntity )
{
ICollideable *pCollide;
const char *pDbgName;
m_pEngineTrace->HandleEntityToCollideable( pHandleEntity, &pCollide, &pDbgName );
if (!pCollide)
return ITERATION_CONTINUE;
// Deal with static props
// NOTE: I could have added static props to a different list and
// enumerated them separately, but that would have been less efficient
if ( StaticPropMgr()->IsStaticProp( pHandleEntity ) )
{
Ray_t ray;
trace_t trace;
ray.Init( m_Pos, m_Pos );
m_pEngineTrace->ClipRayToCollideable( ray, MASK_ALL, pCollide, &trace );
if (trace.startsolid)
{
// We're in a static prop; that's solid baby
// Pretend we hit the world
m_Contents = CONTENTS_SOLID;
m_pCollide = m_pEngineTrace->GetWorldCollideable();
return ITERATION_STOP;
}
return ITERATION_CONTINUE;
}
// We only care about solid volumes
if ((pCollide->GetSolidFlags() & FSOLID_VOLUME_CONTENTS) == 0)
return ITERATION_CONTINUE;
model_t* pModel = (model_t*)pCollide->GetCollisionModel();
if ( pModel && pModel->type == mod_brush )
{
Assert( pCollide->GetCollisionModelIndex() < MAX_MODELS && pCollide->GetCollisionModelIndex() >= 0 );
int nHeadNode = GetModelHeadNode( pCollide );
int contents = CM_TransformedPointContents( m_Pos, nHeadNode,
pCollide->GetCollisionOrigin(), pCollide->GetCollisionAngles() );
if (contents != CONTENTS_EMPTY)
{
// Return the contents of the first thing we hit
m_Contents = contents;
m_pCollide = pCollide;
return ITERATION_STOP;
}
}
return ITERATION_CONTINUE;
}
//-----------------------------------------------------------------------------
// Purpose: Returns the color given trace information
// Input : *trace - trace to get results for
// *color - return color, gamma corrected (0.0f to 1.0f)
//-----------------------------------------------------------------------------
void GetColorForSurface( trace_t *trace, Vector *color )
{
Vector baseColor, diffuseColor;
Vector end = trace->startpos + ( ( Vector )trace->endpos - ( Vector )trace->startpos ) * 1.1f;
if ( trace->DidHitWorld() )
{
if ( trace->hitbox == 0 )
{
// If we hit the world, then ask the world for the fleck color
engine->TraceLineMaterialAndLighting( trace->startpos, end, diffuseColor, baseColor );
}
else
{
// In this case we hit a static prop.
staticpropmgr->GetStaticPropMaterialColorAndLighting( trace, trace->hitbox - 1, diffuseColor, baseColor );
}
}
else
{
// In this case, we hit an entity. Find out the model associated with it
C_BaseEntity *pEnt = trace->m_pEnt;
if ( !pEnt )
{
Msg("Couldn't find surface in GetColorForSurface()\n");
color->x = 255;
color->y = 255;
color->z = 255;
return;
}
ICollideable *pCollide = pEnt->GetCollideable();
int modelIndex = pCollide->GetCollisionModelIndex();
model_t* pModel = const_cast<model_t*>(modelinfo->GetModel( modelIndex ));
// Ask the model info about what we need to know
modelinfo->GetModelMaterialColorAndLighting( pModel, pCollide->GetCollisionOrigin(),
pCollide->GetCollisionAngles(), trace, diffuseColor, baseColor );
}
//Get final light value
color->x = pow( diffuseColor[0], 1.0f/2.2f ) * baseColor[0];
color->y = pow( diffuseColor[1], 1.0f/2.2f ) * baseColor[1];
color->z = pow( diffuseColor[2], 1.0f/2.2f ) * baseColor[2];
}
//-----------------------------------------------------------------------------
// A version that simply accepts a ray (can work as a traceline or tracehull)
//-----------------------------------------------------------------------------
void CEngineTrace::TraceRay( const Ray_t &ray, unsigned int fMask, ITraceFilter *pTraceFilter, trace_t *pTrace )
{
CTraceFilterHitAll traceFilter;
if ( !pTraceFilter )
{
pTraceFilter = &traceFilter;
}
// Gather statistics.
g_EngineStats.IncrementCountedStat( ENGINE_STATS_NUM_TRACE_LINES, 1 );
MEASURE_TIMED_STAT( ENGINE_STATS_TRACE_LINE_TIME );
CM_ClearTrace( pTrace );
// Collide with the world.
if ( pTraceFilter->GetTraceType() != TRACE_ENTITIES_ONLY )
{
ICollideable *pCollide = GetWorldCollideable();
// Make sure the world entity is unrotated
// FIXME: BAH! The !pCollide test here is because of
// CStaticProp::PrecacheLighting.. it's occurring too early
// need to fix that later
Assert(!pCollide || pCollide->GetCollisionOrigin() == vec3_origin );
Assert(!pCollide || pCollide->GetCollisionAngles() == vec3_angle );
CM_BoxTrace( ray, 0, fMask, true, *pTrace );
SetTraceEntity( pCollide, pTrace );
// Blocked by the world.
if ( pTrace->fraction == 0 )
return;
// Early out if we only trace against the world
if ( pTraceFilter->GetTraceType() == TRACE_WORLD_ONLY )
return;
}
// Save the world collision fraction.
float flWorldFraction = pTrace->fraction;
// Create a ray that extends only until we hit the world
// and adjust the trace accordingly
Ray_t entityRay = ray;
entityRay.m_Delta *= pTrace->fraction;
// We know this is safe because if pTrace->fraction == 0
// we would have exited above
pTrace->fractionleftsolid /= pTrace->fraction;
pTrace->fraction = 1.0;
// Collide with entities along the ray
// FIXME: Hitbox code causes this to be re-entrant for the IK stuff.
// If we could eliminate that, this could be static and therefore
// not have to reallocate memory all the time
CEntitiesAlongRay enumerator;
enumerator.Reset();
SpatialPartition()->EnumerateElementsAlongRay( SpatialPartitionMask(), entityRay, false, &enumerator );
bool bNoStaticProps = pTraceFilter->GetTraceType() == TRACE_ENTITIES_ONLY;
bool bFilterStaticProps = pTraceFilter->GetTraceType() == TRACE_EVERYTHING_FILTER_PROPS;
trace_t tr;
ICollideable *pCollideable;
const char *pDebugName;
int nCount = enumerator.m_EntityHandles.Count();
for ( int i = 0; i < nCount; ++i )
{
// Generate a collideable
IHandleEntity *pHandleEntity = enumerator.m_EntityHandles[i];
HandleEntityToCollideable( pHandleEntity, &pCollideable, &pDebugName );
// Check for error condition
if ( !IsSolid( pCollideable->GetSolid(), pCollideable->GetSolidFlags() ) )
{
char temp[1024];
Q_snprintf(temp, sizeof( temp ), "%s in solid list (not solid)\n", pDebugName );
Sys_Error (temp);
}
if ( !StaticPropMgr()->IsStaticProp( pHandleEntity ) )
{
if ( !pTraceFilter->ShouldHitEntity( pHandleEntity, fMask ) )
continue;
}
else
{
// FIXME: Could remove this check here by
// using a different spatial partition mask. Look into it
// if we want more speedups here.
if ( bNoStaticProps )
continue;
if ( bFilterStaticProps )
{
if ( !pTraceFilter->ShouldHitEntity( pHandleEntity, fMask ) )
continue;
}
}
ClipRayToCollideable( entityRay, fMask, pCollideable, &tr );
// Make sure the ray is always shorter than it currently is
ClipTraceToTrace( tr, pTrace );
// Stop if we're in allsolid
if (pTrace->allsolid)
break;
}
// Fix up the fractions so they are appropriate given the original
// unclipped-to-world ray
pTrace->fraction *= flWorldFraction;
pTrace->fractionleftsolid *= flWorldFraction;
#ifdef _DEBUG
Vector vecOffset, vecEndTest;
VectorAdd( ray.m_Start, ray.m_StartOffset, vecOffset );
VectorMA( vecOffset, pTrace->fractionleftsolid, ray.m_Delta, vecEndTest );
Assert( VectorsAreEqual( vecEndTest, pTrace->startpos, 0.1f ) );
VectorMA( vecOffset, pTrace->fraction, ray.m_Delta, vecEndTest );
Assert( VectorsAreEqual( vecEndTest, pTrace->endpos, 0.1f ) );
// Assert( !ray.m_IsRay || pTrace->allsolid || pTrace->fraction >= pTrace->fractionleftsolid );
#endif
if ( !ray.m_IsRay )
{
// Make sure no fractionleftsolid can be used with box sweeps
VectorAdd( ray.m_Start, ray.m_StartOffset, pTrace->startpos );
pTrace->fractionleftsolid = 0;
#ifdef _DEBUG
pTrace->fractionleftsolid = VEC_T_NAN;
#endif
}
}