inline void UTIL_TraceRay( const Ray_t &ray, unsigned int mask,
                          const IHandleEntity *ignore, int collisionGroup, trace_t *ptr )
{
    CTraceFilterSimple traceFilter( ignore, collisionGroup );

    enginetrace->TraceRay( ray, mask, &traceFilter, ptr );

    if( r_visualizetraces.GetBool() )
    {
        DebugDrawLine( ptr->startpos, ptr->endpos, 255, 0, 0, true, -1.0f );
    }
}