Somecode

/* Copyright Alexander Kromm ([email protected]) 2021
 * Carrascado 2022
 *
 * This file is part of Gearbox.
 *
 * Gearbox is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * Gearbox is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Gearbox.  If not, see <https://www.gnu.org/licenses/>.
 */

class gb_InventoryMenu
{

  static
  gb_InventoryMenu from()
  {
    let result = new("gb_InventoryMenu");

    result.mSelectedIndex = 0;

    return result;
  }

  static
  bool thereAreNoItems()
  {
    return getItemsNumber() == 0;
  }

  string confirmSelection() const
  {
    let item  = players[consolePlayer].mo.inv;
    int index = 0;
    while (item != NULL)
    {
      if (item.bInvBar)
      {
        if (index == mSelectedIndex) return item.getClassName();
        ++index;
      }
      item = item.inv;
    }

    return "";
  }

  ui
  bool selectNext()
  {
    int nItems = getItemsNumber();
    if (nItems == 0) return false;

    mSelectedIndex = (mSelectedIndex + 1) % nItems;

    return true;
  }

  ui
  bool selectPrev()
  {
    int nItems = getItemsNumber();
    if (nItems == 0) return false;

    mSelectedIndex = (mSelectedIndex - 1 + nItems) % nItems;

    return true;
  }

  ui
  bool setSelectedIndex(int index)
  {
    if (index == -1 || mSelectedIndex == index) return false;

    mSelectedIndex = index;

    return true;
  }

  ui
  int getSelectedIndex() const
  {
    return mSelectedIndex;
  }


  Private transient CVar gb_item_scale;
    if (!gb_item_scale)
     {
        gb_item_scale = CVar.GetCVar("gb_item_scale", player);
     }


  ui
  void fill(out gb_ViewModel viewModel)
  {
    let item  = players[consolePlayer].mo.inv;
    int index = 0;

    while (item != NULL)
    {
      if (item.bInvBar)
      {
        string tag  = item.getTag();
        int    icon = int(BaseStatusBar.getInventoryIcon(item, BaseStatusBar.DI_AltIconFirst));
        viewModel.tags        .push(tag);
        viewModel.slots       .push(index + 1);
        viewModel.indices     .push(index);
        viewModel.icons       .push(icon);
        viewModel.iconScaleXs .push(gb_item_scale.GetFloat());
        viewModel.iconScaleYs .push(gb_item_scale.GetFloat());
        viewModel.quantity1   .push(item.maxAmount > 1 ? item.amount : -1);
        viewModel.maxQuantity1.push(item.maxAmount);
        viewModel.quantity2   .push(-1);
        viewModel.maxQuantity2.push(-1);

        ++index;
      }
      item = item.inv;
    }

    mSelectedIndex = min(mSelectedIndex, getItemsNumber() - 1);
    if (mSelectedIndex == -1 && getItemsNumber() > 0) mSelectedIndex = 0;
    viewModel.selectedIndex = mSelectedIndex;
  }

// private: ////////////////////////////////////////////////////////////////////////////////////////

  private static
  int getItemsNumber()
  {
    let item   = players[consolePlayer].mo.inv;
    int result = 0;
    while (item != NULL)
    {
      result += item.bInvBar;
      item = item.inv;
    }
    return result;
  }

  private int mSelectedIndex;

} // class gb_InventoryMenu