Fix usage items under player (#4758)

* fix usage items under player

* Zbizu update

* Revert "Zbizu update"

This reverts commit fa16c68.

* update

src/tile.cpp

@@ -1605,13 +1605,32 @@ bool Tile::isMoveableBlocking() const { return !ground || hasFlag(TILESTATE_BLOC
 Item* Tile::getUseItem(int32_t index) const
 {
  const TileItemVector* items = getItemList();
+
+ // no items, get ground
  if (!items || items->size() == 0) {
  return ground;
  }
 
+ // try getting thing by index
  if (Thing* thing = getThing(index)) {
- return thing->getItem();
+ Item* thingItem = thing->getItem();
+ if (thingItem) {
+ return thingItem;
+ }
  }
 
- return nullptr;
+ // try getting top movable item
+ Item* topDownItem = getTopDownItem();
+ if (topDownItem) {
+ return topDownItem;
+ }
+
+ // try getting door
+ for (auto it = items->rbegin(), end = items->rend(); it != end; ++it) {
+ if ((*it)->getDoor()) {
+ return (*it)->getItem();
+ }
+ }
+
+ return *items->begin();
 }