/*
============
idClip::Translation
============
*/
bool idClip::Translation( trace_t &results, const idVec3 &start, const idVec3 &end,
const idClipModel *mdl, const idMat3 &trmAxis, int contentMask, const idEntity *passEntity ) {
int i, num;
idClipModel *touch, *clipModelList[MAX_GENTITIES];
idBounds traceBounds;
float radius;
trace_t trace;
const idTraceModel *trm;
if( TestHugeTranslation( results, mdl, start, end, trmAxis ) ) {
return true;
}
trm = TraceModelForClipModel( mdl );
if( !passEntity || passEntity->entityNumber != ENTITYNUM_WORLD ) {
// test world
idClip::numTranslations++;
collisionModelManager->Translation( &results, start, end, trm, trmAxis, contentMask, 0, vec3_origin, mat3_default );
results.c.entityNum = results.fraction != 1.0f ? ENTITYNUM_WORLD : ENTITYNUM_NONE;
if( results.fraction == 0.0f ) {
return true; // blocked immediately by the world
}
} else {
memset( &results, 0, sizeof( results ) );
results.fraction = 1.0f;
results.endpos = end;
results.endAxis = trmAxis;
}
if( !trm ) {
traceBounds.FromPointTranslation( start, results.endpos - start );
radius = 0.0f;
} else {
traceBounds.FromBoundsTranslation( trm->bounds, start, trmAxis, results.endpos - start );
radius = trm->bounds.GetRadius();
}
num = GetTraceClipModels( traceBounds, contentMask, passEntity, clipModelList );
for( i = 0; i < num; i++ ) {
touch = clipModelList[i];
if( !touch ) {
continue;
}
if( touch->renderModelHandle != -1 ) {
idClip::numRenderModelTraces++;
TraceRenderModel( trace, start, end, radius, trmAxis, touch );
} else {
idClip::numTranslations++;
collisionModelManager->Translation( &trace, start, end, trm, trmAxis, contentMask,
touch->Handle(), touch->origin, touch->axis );
}
if( trace.fraction < results.fraction ) {
results = trace;
results.c.entityNum = touch->entity->entityNumber;
results.c.id = touch->id;
if( results.fraction == 0.0f ) {
break;
}
}
}
return ( results.fraction < 1.0f );
}
/*
============
idClip::TranslationEntities
============
*/
void idClip::TranslationEntities( trace_t &results, const idVec3 &start, const idVec3 &end,
const idClipModel *mdl, const idMat3 &trmAxis, int contentMask, const idEntity *passEntity ) {
int i, num;
idClipModel *touch, *clipModelList[MAX_GENTITIES];
idBounds traceBounds;
float radius;
trace_t trace;
const idTraceModel *trm;
if ( TestHugeTranslation( results, mdl, start, end, trmAxis ) ) {
return;
}
trm = TraceModelForClipModel( mdl );
results.fraction = 1.0f;
results.endpos = end;
results.endAxis = trmAxis;
if ( !trm ) {
traceBounds.FromPointTranslation( start, end - start );
radius = 0.0f;
} else {
traceBounds.FromBoundsTranslation( trm->bounds, start, trmAxis, end - start );
radius = trm->bounds.GetRadius();
}
num = GetTraceClipModels( traceBounds, contentMask, passEntity, clipModelList );
for ( i = 0; i < num; i++ ) {
touch = clipModelList[i];
if ( !touch ) {
continue;
}
if ( touch->renderModelHandle != -1 ) {
idClip::numRenderModelTraces++;
TraceRenderModel( trace, start, end, radius, trmAxis, touch );
} else {
idClip::numTranslations++;
collisionModelManager->Translation( &trace, start, end, trm, trmAxis, contentMask,
touch->Handle(), touch->origin, touch->axis );
}
if ( trace.fraction < results.fraction ) {
results = trace;
results.c.entityNum = touch->entity->entityNumber;
results.c.id = touch->id;
if ( results.fraction == 0.0f ) {
break;
}
}
}
}
/*
============
idClip::Motion
============
*/
bool idClip::Motion( trace_t &results, const idVec3 &start, const idVec3 &end, const idRotation &rotation,
const idClipModel *mdl, const idMat3 &trmAxis, int contentMask, const idEntity *passEntity ) {
int i, num;
idClipModel *touch, *clipModelList[MAX_GENTITIES];
idVec3 dir, endPosition;
idBounds traceBounds;
float radius;
trace_t translationalTrace, rotationalTrace, trace;
idRotation endRotation;
const idTraceModel *trm;
assert( rotation.GetOrigin() == start );
if ( TestHugeTranslation( results, mdl, start, end, trmAxis ) ) {
return true;
}
if ( mdl != NULL && rotation.GetAngle() != 0.0f && rotation.GetVec() != vec3_origin ) {
// if no translation
if ( start == end ) {
// pure rotation
return Rotation( results, start, rotation, mdl, trmAxis, contentMask, passEntity );
}
} else if ( start != end ) {
// pure translation
return Translation( results, start, end, mdl, trmAxis, contentMask, passEntity );
} else {
// no motion
results.fraction = 1.0f;
results.endpos = start;
results.endAxis = trmAxis;
return false;
}
trm = TraceModelForClipModel( mdl );
radius = trm->bounds.GetRadius();
if ( !passEntity || passEntity->entityNumber != ENTITYNUM_WORLD ) {
// translational collision with world
idClip::numTranslations++;
collisionModelManager->Translation( &translationalTrace, start, end, trm, trmAxis, contentMask, 0, vec3_origin, mat3_default );
translationalTrace.c.entityNum = translationalTrace.fraction != 1.0f ? ENTITYNUM_WORLD : ENTITYNUM_NONE;
} else {
memset( &translationalTrace, 0, sizeof( translationalTrace ) );
translationalTrace.fraction = 1.0f;
translationalTrace.endpos = end;
translationalTrace.endAxis = trmAxis;
}
if ( translationalTrace.fraction != 0.0f ) {
traceBounds.FromBoundsRotation( trm->bounds, start, trmAxis, rotation );
dir = translationalTrace.endpos - start;
for ( i = 0; i < 3; i++ ) {
if ( dir[i] < 0.0f ) {
traceBounds[0][i] += dir[i];
}
else {
traceBounds[1][i] += dir[i];
}
}
num = GetTraceClipModels( traceBounds, contentMask, passEntity, clipModelList );
for ( i = 0; i < num; i++ ) {
touch = clipModelList[i];
if ( !touch ) {
continue;
}
if ( touch->renderModelHandle != -1 ) {
idClip::numRenderModelTraces++;
TraceRenderModel( trace, start, end, radius, trmAxis, touch );
} else {
idClip::numTranslations++;
collisionModelManager->Translation( &trace, start, end, trm, trmAxis, contentMask,
touch->Handle(), touch->origin, touch->axis );
}
if ( trace.fraction < translationalTrace.fraction ) {
translationalTrace = trace;
translationalTrace.c.entityNum = touch->entity->entityNumber;
translationalTrace.c.id = touch->id;
if ( translationalTrace.fraction == 0.0f ) {
break;
}
}
}
} else {
num = -1;
}
endPosition = translationalTrace.endpos;
endRotation = rotation;
endRotation.SetOrigin( endPosition );
if ( !passEntity || passEntity->entityNumber != ENTITYNUM_WORLD ) {
// rotational collision with world
idClip::numRotations++;
collisionModelManager->Rotation( &rotationalTrace, endPosition, endRotation, trm, trmAxis, contentMask, 0, vec3_origin, mat3_default );
rotationalTrace.c.entityNum = rotationalTrace.fraction != 1.0f ? ENTITYNUM_WORLD : ENTITYNUM_NONE;
} else {
memset( &rotationalTrace, 0, sizeof( rotationalTrace ) );
rotationalTrace.fraction = 1.0f;
rotationalTrace.endpos = endPosition;
rotationalTrace.endAxis = trmAxis * rotation.ToMat3();
}
if ( rotationalTrace.fraction != 0.0f ) {
if ( num == -1 ) {
traceBounds.FromBoundsRotation( trm->bounds, endPosition, trmAxis, endRotation );
num = GetTraceClipModels( traceBounds, contentMask, passEntity, clipModelList );
}
for ( i = 0; i < num; i++ ) {
touch = clipModelList[i];
if ( !touch ) {
continue;
}
// no rotational collision detection with render models
if ( touch->renderModelHandle != -1 ) {
continue;
}
idClip::numRotations++;
collisionModelManager->Rotation( &trace, endPosition, endRotation, trm, trmAxis, contentMask,
touch->Handle(), touch->origin, touch->axis );
if ( trace.fraction < rotationalTrace.fraction ) {
rotationalTrace = trace;
rotationalTrace.c.entityNum = touch->entity->entityNumber;
rotationalTrace.c.id = touch->id;
if ( rotationalTrace.fraction == 0.0f ) {
break;
}
}
}
}
if ( rotationalTrace.fraction < 1.0f ) {
results = rotationalTrace;
} else {
results = translationalTrace;
results.endAxis = rotationalTrace.endAxis;
}
results.fraction = Max( translationalTrace.fraction, rotationalTrace.fraction );
return ( translationalTrace.fraction < 1.0f || rotationalTrace.fraction < 1.0f );
}
