Merge pull request #930 from Neveix/feat-inventory-enhancements

[WIP] Inventory enhancements

doc/en/scripting/builtins/libhud.md

@@ -57,6 +57,10 @@ hud.get_block_inventory() -> int
 -- Gives the ID of the second open inventory (block, virtual inventory...) or 0.
 hud.get_second_inventory() -> int
 
+-- Get the inventory ID of exchange item (grabbed item in inventory) or 0. 
+-- It has only one slot - 0
+hud.get_exchange_inventory() -> int
+
 -- Gives the ID of the player that the UI is bound to.
 hud.get_player() -> int
 

doc/ru/scripting/builtins/libhud.md

@@ -58,6 +58,11 @@ hud.get_block_inventory() -> int
 -- Дает ID второго открытого инвентаря (блок, виртуальный инвентарь...) или 0.
 hud.get_second_inventory() -> int
 
+-- Получить ID инвентаря, в котором находится предмет во время 
+-- его перемещения в инвентаре, или 0 если его не существует.
+-- Имеет единственный слот - 0
+hud.get_exchange_inventory() -> int
+
 -- Дает ID игрока, к которому привязан пользовательский интерфейс.
 hud.get_player() -> int
 
@@ -81,4 +86,4 @@ hud.set_allow_pause(flag: boolean)
 
 -- Функция, управляющая именованным скелетом 'hand' (см. gfx.skeletons)
 hud.hand_controller: function()
-```
+```

res/content/base/modules/util.lua

@@ -1,5 +1,44 @@
 local util = {}
 
+local DROP_FORCE = 8
+local DROP_INIT_VEL = {0, 3, 0}
+
+---@param mode integer 0 - whole stack, 1 - single item, 2 - dupe whole stack
+function util.drop_from_slot(invid, slot, mode)
+    if invid == 0 then
+        return
+    end
+    local pid = hud.get_player()
+    if mode == 2 and not player.is_infinite_items(pid) then
+        return
+    end
+    local itemid, itemcount = inventory.get(invid, slot)
+    if itemid == 0 then
+        return
+    end
+
+    local drop_itemcount = 1
+    if mode == 0 then
+        drop_itemcount = itemcount
+    end
+    if mode == 2 then
+        drop_itemcount = item.stack_size(itemid)
+    else
+        inventory.set(invid, slot, itemid, itemcount - drop_itemcount)
+    end
+
+    local data = inventory.get_all_data(invid, slot)
+    local pvel = { player.get_vel(pid) }
+    local ppos = vec3.add({ player.get_pos(pid) }, { 0, 0.7, 0 })
+    local throw_force = vec3.mul(player.get_dir(pid), DROP_FORCE)
+    local drop = util.drop(ppos, itemid, drop_itemcount, data, 1.5)
+    if not drop then
+        return
+    end
+    local velocity = vec3.add(throw_force, vec3.add(pvel, DROP_INIT_VEL))
+    drop.rigidbody:set_vel(velocity)
+end
+
 function util.drop(ppos, itemid, count, data, pickup_delay)
     if itemid == 0 or not itemid then
         return nil

res/content/base/scripts/hud.lua

@@ -1,31 +1,21 @@
 local base_util = require "util"
 
-local DROP_FORCE = 8
-local DROP_INIT_VEL = {0, 3, 0}
-
 function on_hud_open()
-    input.add_callback("player.drop", function ()
+    events.on("core:drop_outside_inventory", function(mode)
+        local invid = hud.get_exchange_inventory()
+        base_util.drop_from_slot(invid, 0, mode)
+    end)
+    input.add_callback("player.drop", function()
         if hud.is_paused() or hud.is_inventory_open() then
             return
         end
         local pid = hud.get_player()
         local invid, slot = player.get_inventory(pid)
-        local itemid, itemcount = inventory.get(invid, slot)
-        if itemid == 0 then
-            return
+        local mode = 1
+        if input.is_pressed("key:left-ctrl") or input.is_pressed("key:right-ctrl") then
+          mode = 0
         end
-        local data = inventory.get_all_data(invid, slot)
-        inventory.set(invid, slot, itemid, itemcount-1)
-
-        local pvel = {player.get_vel(pid)}
-        local ppos = vec3.add({player.get_pos(pid)}, {0, 0.7, 0})
-        local throw_force = vec3.mul(player.get_dir(pid), DROP_FORCE)
-        local drop = base_util.drop(ppos, itemid, 1, data, 1.5)
-        if not drop then
-            return
-        end
-        local velocity = vec3.add(throw_force, vec3.add(pvel, DROP_INIT_VEL))
-        drop.rigidbody:set_vel(velocity)
+        base_util.drop_from_slot(invid, slot, mode)
     end)
     rules.create("do-loot-non-player", true)
 end

src/frontend/hud.cpp

@@ -174,6 +174,15 @@ 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)'
+        onmiddleclick='events.emit(\"core:drop_outside_inventory\", 2)'
+        />)"
+    );
 
     uicamera = std::make_unique<Camera>(glm::vec3(), 1);
     uicamera->perspective = false;
@@ -188,6 +197,7 @@ 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 +223,7 @@ Hud::~Hud() {
     }
     gui.remove(hotbarView);
     gui.remove(darkOverlay);
+    gui.remove(inventoryDropArea);
     gui.remove(contentAccessPanel);
     gui.remove(debugPanel);
 }
@@ -358,6 +369,7 @@ 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 +751,10 @@ 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/graphics/ui/GUI.cpp

@@ -14,7 +14,6 @@
 #include "frontend/UiDocument.hpp"
 #include "frontend/locale.hpp"
 #include "graphics/core/Batch2D.hpp"
-#include "graphics/core/LineBatch.hpp"
 #include "graphics/core/Shader.hpp"
 #include "graphics/core/Font.hpp"
 #include "graphics/core/DrawContext.hpp"

src/graphics/ui/elements/InventoryView.cpp

@@ -12,11 +12,8 @@
 #include "graphics/core/Batch2D.hpp"
 #include "graphics/core/DrawContext.hpp"
 #include "graphics/core/Font.hpp"
-#include "graphics/core/Shader.hpp"
-#include "graphics/core/Texture.hpp"
 #include "graphics/render/BlocksPreview.hpp"
 #include "graphics/ui/GUI.hpp"
-#include "items/Inventories.hpp"
 #include "items/Inventory.hpp"
 #include "items/ItemDef.hpp"
 #include "logic/scripting/scripting.hpp"

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>},