Method breakAtPosition

source/game/StarPlant.cpp:942–1047

}

void Plant::breakAtPosition(Vec2I const& position, Vec2F const& sourcePosition) {
  auto geometry = world()->geometry();
  Vec2I internalPos = geometry.diff(position, tilePosition());
  size_t idx = highest<size_t>();
  int segmentIdx = highest<int>();
  for (size_t i = 0; i < m_pieces.size(); ++i) {
    auto& piece = m_pieces[i];
    if (piece.structuralSegment && piece.spaces.contains(internalPos)) {
      if (piece.segmentIdx < segmentIdx) {
        segmentIdx = piece.segmentIdx;
        idx = i;
      }
    }
  }

  // default to highest structural piece
  if (idx >= m_pieces.size()) {
    for (size_t i = m_pieces.size(); i > 0; --i) {
      auto& piece = m_pieces[i - 1];
      if (piece.structuralSegment) {
        segmentIdx = piece.segmentIdx;
        idx = i - 1;
        break;
      }
    }
  }

  // plant has no structural segments? this is a terrible fallback because it
  // prevents destruction
  if (idx >= m_pieces.size())
    return;

  PlantPiece breakPiece = m_pieces[idx];
  Vec2F breakPoint = Vec2F(position) - Vec2F(tilePosition());
  if (breakPiece.spaces.size()) {
    RectF bounds = RectF::null();
    for (auto space : breakPiece.spaces) {
      bounds.combine(Vec2F(space));
      bounds.combine(Vec2F(space) + Vec2F(1, 1));
    }
    breakPoint[0] = (bounds.max()[0] + bounds.min()[0]) / 2.0f;
    if (!m_ceiling)
      breakPoint[1] = bounds.min()[1];
    else
      breakPoint[1] = bounds.max()[1];
  }

  List<PlantPiece> droppedPieces;
  if (m_pieces[idx].structuralSegment) {
    idx = 0;
    while (idx < m_pieces.size()) {
      if (m_pieces[idx].segmentIdx >= segmentIdx) {
        droppedPieces.append(m_pieces.takeAt(idx));
        continue;
      }
      idx++;
    }
  } else {