switch to inventory drop area

src/frontend/hud.cpp

@@ -1,3 +1,5 @@
+#include <sstream>
+
 #include "hud.hpp"
 
 #include "ContentGfxCache.hpp"
@@ -174,6 +176,14 @@ Hud::Hud(Engine& engine, LevelFrontend& frontend, Player& player)
         gui,
         "<container size='4000' color='#00000080' z-index='-1' visible='false'/>"
     );
+    
+    inventoryDropArea = guiutil::create(
+        gui,
+        R"(<container size='4000' color='#00000000' z-index='-1' visible='false'
+             onclick='events.emit(\"core:drop_outside_inventory\", 0)' 
+        onrightclick='events.emit(\"core:drop_outside_inventory\", 1)' 
+        />)"
+    );
 
     uicamera = std::make_unique<Camera>(glm::vec3(), 1);
     uicamera->perspective = false;
@@ -188,6 +198,7 @@ Hud::Hud(Engine& engine, LevelFrontend& frontend, Player& player)
 
     gui.add(debugPanel);
     gui.add(darkOverlay);
+    gui.add(inventoryDropArea);
     gui.add(hotbarView);
     gui.add(contentAccessPanel);
 
@@ -213,6 +224,7 @@ Hud::~Hud() {
     }
     gui.remove(hotbarView);
     gui.remove(darkOverlay);
+    gui.remove(inventoryDropArea);
     gui.remove(contentAccessPanel);
     gui.remove(debugPanel);
 }
@@ -358,6 +370,7 @@ void Hud::update(bool visible) {
     contentAccess->setMinSize(glm::vec2(1, windowSize.y));
     hotbarView->setVisible(visible && !(secondUI && !inventoryView));
     darkOverlay->setVisible(isMenuOpen);
+    inventoryDropArea->setVisible(inventoryOpen);
     menu.setVisible(isMenuOpen);
 
     if (visible) {
@@ -739,6 +752,10 @@ std::shared_ptr<Inventory> Hud::getSecondInventory() {
     return nullptr;
 }
 
+std::shared_ptr<Inventory> Hud::getExchangeInventory() {
+    return exchangeSlotInv;
+}
+
 bool Hud::isContentAccess() const {
     return showContentPanel;
 }

src/frontend/hud.hpp

@@ -93,6 +93,8 @@ class Hud : public util::ObjectsKeeper {
     std::shared_ptr<gui::UINode> debugPanel;
     /// @brief Overlay used in pause mode
     std::shared_ptr<gui::UINode> darkOverlay;
+    /// @brief Overlay used in inventory
+    std::shared_ptr<gui::UINode> inventoryDropArea;
     /// @brief Inventories interaction agent (grabbed item)
     std::shared_ptr<gui::SlotView> exchangeSlot;
     /// @brief Exchange slot inventory (1 slot only)
@@ -207,6 +209,8 @@ public:
 
     std::shared_ptr<Inventory> getSecondInventory();
 
+    std::shared_ptr<Inventory> getExchangeInventory();
+
     bool isContentAccess() const;
 
     void setContentAccess(bool flag);

src/logic/scripting/lua/libs/libhud.cpp

@@ -149,6 +149,15 @@ static int l_get_second_inventory(lua::State* L) {
     }
 }
 
+static int l_get_exchange_inventory(lua::State* L) {
+    auto inventory = hud->getExchangeInventory();
+    if (inventory == nullptr) {
+        return lua::pushinteger(L, 0);
+    } else {
+        return lua::pushinteger(L, inventory->getId());
+    }
+}
+
 static int l_get_player(lua::State* L) {
     auto player = hud->getPlayer();
     return lua::pushinteger(L, player->getId());
@@ -216,6 +225,7 @@ const luaL_Reg hudlib[] = {
     {"show_overlay", wrap_hud<l_show_overlay>},
     {"get_block_inventory", wrap_hud<l_get_block_inventory>},
     {"get_second_inventory", wrap_hud<l_get_second_inventory>},
+    {"get_exchange_inventory", wrap_hud<l_get_exchange_inventory>},
     {"close", wrap_hud<l_close>},
     {"pause", wrap_hud<l_pause>},
     {"resume", wrap_hud<l_resume>},