Method castRay

Engine/source/ts/tsCollision.cpp:165–250

}

bool TSShapeInstance::castRay(const Point3F & a, const Point3F & b, RayInfo * rayInfo, S32 dl)
{
   // if dl==-1, nothing to do
   if (dl==-1)
      return false;

   AssertFatal(dl>=0 && dl<mShape->details.size(),"TSShapeInstance::castRay");

   // get subshape and object detail
   const TSDetail * detail = &mShape->details[dl];
   S32 ss = detail->subShapeNum;
   S32 od = detail->objectDetailNum;

   // This detail has no geometry to hit.
   if ( ss < 0 )
      return false;

   S32 start = mShape->subShapeFirstObject[ss];
   S32 end   = mShape->subShapeNumObjects[ss] + start;
   RayInfo saveRay;
   saveRay.t = 1.0f;
   const MatrixF * saveMat = NULL;
   bool found = false;
   if (start<end)
   {
      Point3F ta, tb;

      // set up for first object's node
      MatrixF mat;
      const MatrixF * previousMat = &mMeshObjects[start].getTransform();
      mat = *previousMat;
      mat.inverse();
      mat.mulP(a,&ta);
      mat.mulP(b,&tb);

      // run through objects and collide
      for (S32 i=start; i<end; i++)
      {
         MeshObjectInstance * mesh = &mMeshObjects[i];

         if (od >= mesh->object->numMeshes)
            continue;

         if (&mesh->getTransform() != previousMat)
         {
            // different node from before, set up for this node
            previousMat = &mesh->getTransform();

            if (previousMat != NULL)
            {
               mat = *previousMat;
               mat.inverse();
               mat.mulP(a,&ta);
               mat.mulP(b,&tb);
            }
         }
         // collide...
         if (mesh->castRay(od,ta,tb,rayInfo, mMaterialList))