Function BuildSmoothBridge

editor/HRoom.cpp:2464–2638

Connects two rooms in a pleasing way

// Connects two rooms in a pleasing way
void BuildSmoothBridge(room *rp0, int facenum0, room *rp1, int facenum1) {
  room *rp;
  int nv0, nv1, nverts, nfaces;
  int i;
  vector tverts[MAX_VERTS_PER_FACE];

  // Get values from current faces
  face *fp0 = &rp0->faces[facenum0];
  face *fp1 = &rp1->faces[facenum1];
  nv0 = fp0->num_verts;
  nv1 = fp1->num_verts;

  // Check for portal already here
  if (fp0->portal_num != -1) {
    OutrageMessageBox("Cannot build bridge: There is already a connection at %d:%d.", ROOMNUM(rp0), facenum0);
    return;
  }
  if (fp1->portal_num != -1) {
    OutrageMessageBox("Cannot build bridge: There is already a connection at %d:%d.", ROOMNUM(rp1), facenum1);
    return;
  }

  // Get values for new room
  nverts = nv0 + nv1;
  nfaces = nverts + 2;

  // Get a pointer to our room
  rp = CreateNewRoom(nverts, nfaces);
  if (rp == NULL) {
    OutrageMessageBox("Cannot build bridge: No free rooms.");
    return;
  }

  // Set the vertices for the room
  for (i = 0; i < nv0; i++)
    rp->verts[i] = rp0->verts[fp0->face_verts[i]];
  for (i = 0; i < nv1; i++)
    rp->verts[nv0 + i] = rp1->verts[fp1->face_verts[nv1 - 1 - i]];

  // Create the connecting faces

  // Compute normalized vector from attach face to base face
  vector c0, c1, delta_vec;
#ifndef NEWEDITOR
  ComputeCenterPointOnFace(&c0, rp0, facenum0);
  ComputeCenterPointOnFace(&c1, rp1, facenum1);
#else
  ComputeFaceBoundingCircle(&c0, rp0, facenum0);
  ComputeFaceBoundingCircle(&c1, rp1, facenum1);
#endif
  vm_GetNormalizedDir(&delta_vec, &c1, &c0);

  // Compute the cosine of the angle between our vector and the normal of the base face
  float cos = delta_vec * fp1->normal;

  // Get a pointer to a vertex on face1
  vector *vp = &rp->verts[nv0];