diff --git a/res/content/base/scripts/components/drop.lua b/res/content/base/scripts/components/drop.lua
index 12e16265..7aa8babb 100644
--- a/res/content/base/scripts/components/drop.lua
+++ b/res/content/base/scripts/components/drop.lua
@@ -6,7 +6,8 @@ inair = true
 target = -1
 timer = 0.3
 
-local dropitem = ARGS
+local def_index = entity:def_index()
+dropitem = ARGS
 if dropitem then 
     timer = dropitem.pickup_delay or timer
 end
@@ -38,7 +39,7 @@ end
 
 function on_grounded(force)
     local matrix = mat4.idt()
-    mat4.rotate(matrix, {0, 1, 0}, math.random()*360, matrix)
+    mat4.rotate(matrix, {0, 1, 0}, math.random() * 360, matrix)
     mat4.rotate(matrix, {1, 0, 0}, 90, matrix)
     mat4.scale(matrix, scale, matrix)
     rig:set_matrix(0, matrix)
@@ -50,14 +51,34 @@ function on_fall()
 end
 
 function on_sensor_enter(index, oid)
-    local playerid = hud.get_player()
-    local playerentity = player.get_entity(playerid)
-    if timer < 0.0 and oid == playerentity and index == 0 then
-        entity:despawn()
-        inventory.add(player.get_inventory(playerid), dropitem.id, dropitem.count)
-        audio.play_sound_2d("events/pickup", 0.5, 0.8+math.random()*0.4, "regular")
+    local other = entities.get(oid)
+    if not other then
+        return
     end
-    if index == 1 and oid == playerentity then
+    local pid = other:get_player()
+    if pid == -1 then
+        -- other is base:drop too
+        if index == 0 and other:def_index() == def_index then
+            local odrop = other:get_component("base:drop")
+            if odrop.dropitem.id == dropitem.id then
+                -- // TODO: replace combination logic with item.* function
+                local stack = item.stack_size(dropitem.id)
+                local sum = dropitem.count + odrop.dropitem.count
+                if sum <= stack then
+                    dropitem.count = sum
+                    other:despawn()
+                end
+            end
+        end
+        return
+    end
+
+    if timer < 0.0 and index == 0 then
+        entity:despawn()
+        inventory.add(player.get_inventory(pid), dropitem.id, dropitem.count)
+        audio.play_sound_2d("events/pickup", 0.5, 0.8 + math.random() * 0.4, "regular")
+    end
+    if index == 1 then
         target = oid
     end
 end
@@ -84,15 +105,18 @@ end
 
 function on_update(tps)
     timer = timer - 1.0/tps
-    if target ~= -1 then
-        if timer > 0.0 then
-            return
-        end
-        local dir = vec3.sub(entities.get(target).transform:get_pos(), tsf:get_pos())
-        vec3.normalize(dir, dir)
-        vec3.mul(dir, 10.0, dir)
-        body:set_vel(dir)
+
+    if timer > 0.0 or target == -1 then
+        return
     end
+    local target_entity = entities.get(target)
+    if not target_entity then
+        return
+    end
+    local dir = vec3.sub(target_entity.transform:get_pos(), tsf:get_pos())
+    vec3.normalize(dir, dir)
+    vec3.mul(dir, 10.0, dir)
+    body:set_vel(dir)
 end
 
 function on_attacked(attacker, pid)
diff --git a/run.sh b/run.sh
index 0bf5a60a..612f0693 100755
--- a/run.sh
+++ b/run.sh
@@ -1,6 +1,66 @@
-mkdir -p build
-cd build
-cmake -DCMAKE_BUILD_TYPE=Release ..
-cmake --build . -j$(nproc)
-cd ..
-build/VoxelEngine
+#!/bin/bash
+
+
+
+function delete {
+    echo "[RUN SCRIPT] Delete build directory"
+    rm -rf build
+}
+
+
+function build {
+    echo "[RUN SCRIPT] Build project"
+    mkdir -p build
+    cd build
+    cmake -DCMAKE_BUILD_TYPE=Release ..
+    cmake --build . -j$(nproc)
+    cd ..
+}
+
+
+function rebuild {
+    delete
+    build
+}
+
+
+run=true
+function norun {
+    echo "[RUN SCRIPT] Build without run"
+    run=
+}
+
+
+function help {
+    echo "[RUN SCRIPT] Usage: ./run [ARGUMENT]..."
+    echo "[RUN SCRIPT] Arguments:"
+    echo "[RUN SCRIPT]     -d, --delete     Delete build directory"
+    echo "[RUN SCRIPT]     -b, --build      Build project"
+    echo "[RUN SCRIPT]     -r, --rebuild    Rebuild project"
+    echo "[RUN SCRIPT]     -R, --norun      Build without run"
+    echo "[RUN SCRIPT]     -h, --help       Print this page"
+}
+
+
+while [ -n "$1" ]; do
+    case "$1" in
+        -d | --delete) delete ;;
+        -b | --build) build ;;
+        -r | --rebuild) rebuild ;;
+        -R | --norun) norun ;;
+        -h | --help) help
+                     norun
+                     break ;;
+        *) echo "[RUN SCRIPT] Unknown argument: $1"
+           help
+           norun
+           break ;;
+    esac
+    shift
+done
+
+
+if [[ $run ]]; then
+    echo "[RUN SCRIPT] Run project"
+    ./build/VoxelEngine
+fi
\ No newline at end of file
diff --git a/src/frontend/hud.cpp b/src/frontend/hud.cpp
index b60d8535..3095ed1e 100644
--- a/src/frontend/hud.cpp
+++ b/src/frontend/hud.cpp
@@ -592,7 +592,10 @@ void Hud::draw(const DrawContext& ctx){
     const uint height = viewport.getHeight();
     auto menu = gui.getMenu();
 
-    darkOverlay->setVisible(menu->hasOpenPage());
+    bool is_menu_open = menu->hasOpenPage();
+    darkOverlay->setVisible(is_menu_open);
+    menu->setVisible(is_menu_open);
+
     updateElementsPosition(viewport);
 
     uicamera->setFov(height);
@@ -693,7 +696,6 @@ void Hud::setPause(bool pause) {
     if (pause && !menu->hasOpenPage()) {
         menu->setPage("pause");
     }
-    menu->setVisible(pause);
 }
 
 Player* Hud::getPlayer() const {
diff --git a/src/graphics/ui/elements/TextBox.cpp b/src/graphics/ui/elements/TextBox.cpp
index 12f262f1..1e36c601 100644
--- a/src/graphics/ui/elements/TextBox.cpp
+++ b/src/graphics/ui/elements/TextBox.cpp
@@ -826,7 +826,7 @@ void TextBox::setCaret(size_t position) {
         scrolled(-glm::ceil(offset/static_cast<double>(scrollStep)+0.5f));
     }
     uint lcaret = caret - label->getTextLineOffset(line);
-    int realoffset = font->calcWidth(input, lcaret)-int(textOffset) - padding.x;
+    int realoffset = font->calcWidth(input, lcaret)-int(textOffset) + 2;
     if (realoffset-width > 0) {
         setTextOffset(textOffset + realoffset-width);
     } else if (realoffset < 0) {
diff --git a/src/logic/scripting/lua/libs/libhud.cpp b/src/logic/scripting/lua/libs/libhud.cpp
index 1c4245ba..1bdcee12 100644
--- a/src/logic/scripting/lua/libs/libhud.cpp
+++ b/src/logic/scripting/lua/libs/libhud.cpp
@@ -1,9 +1,9 @@
+#include "libhud.hpp"
+
 #include <glm/glm.hpp>
-#include <iostream>
 
 #include "assets/Assets.hpp"
 #include "content/Content.hpp"
-#include "engine/Engine.hpp"
 #include "frontend/UiDocument.hpp"
 #include "frontend/hud.hpp"
 #include "graphics/ui/elements/InventoryView.hpp"
@@ -16,11 +16,7 @@
 #include "voxels/voxel.hpp"
 #include "voxels/blocks_agent.hpp"
 #include "world/Level.hpp"
-#include "api_lua.hpp"
 
-namespace scripting {
-    extern Hud* hud;
-}
 using namespace scripting;
 
 static int l_open_inventory(lua::State*) {
@@ -176,22 +172,22 @@ static int l_set_allow_pause(lua::State* L) {
 }
 
 const luaL_Reg hudlib[] = {
-    {"open_inventory", lua::wrap<l_open_inventory>},
-    {"close_inventory", lua::wrap<l_close_inventory>},
-    {"open", lua::wrap<l_open>},
-    {"open_block", lua::wrap<l_open_block>},
-    {"open_permanent", lua::wrap<l_open_permanent>},
-    {"show_overlay", lua::wrap<l_show_overlay>},
-    {"get_block_inventory", lua::wrap<l_get_block_inventory>},
-    {"close", lua::wrap<l_close>},
-    {"pause", lua::wrap<l_pause>},
-    {"resume", lua::wrap<l_resume>},
-    {"is_paused", lua::wrap<l_is_paused>},
-    {"is_inventory_open", lua::wrap<l_is_inventory_open>},
-    {"get_player", lua::wrap<l_get_player>},
-    {"_is_content_access", lua::wrap<l_is_content_access>},
-    {"_set_content_access", lua::wrap<l_set_content_access>},
-    {"_set_debug_cheats", lua::wrap<l_set_debug_cheats>},
-    {"set_allow_pause", lua::wrap<l_set_allow_pause>},
+    {"open_inventory", wrap_hud<l_open_inventory>},
+    {"close_inventory", wrap_hud<l_close_inventory>},
+    {"open", wrap_hud<l_open>},
+    {"open_block", wrap_hud<l_open_block>},
+    {"open_permanent", wrap_hud<l_open_permanent>},
+    {"show_overlay", wrap_hud<l_show_overlay>},
+    {"get_block_inventory", wrap_hud<l_get_block_inventory>},
+    {"close", wrap_hud<l_close>},
+    {"pause", wrap_hud<l_pause>},
+    {"resume", wrap_hud<l_resume>},
+    {"is_paused", wrap_hud<l_is_paused>},
+    {"is_inventory_open", wrap_hud<l_is_inventory_open>},
+    {"get_player", wrap_hud<l_get_player>},
+    {"_is_content_access", wrap_hud<l_is_content_access>},
+    {"_set_content_access", wrap_hud<l_set_content_access>},
+    {"_set_debug_cheats", wrap_hud<l_set_debug_cheats>},
+    {"set_allow_pause", wrap_hud<l_set_allow_pause>},
     {NULL, NULL}
 };
diff --git a/src/logic/scripting/lua/libs/libhud.hpp b/src/logic/scripting/lua/libs/libhud.hpp
new file mode 100644
index 00000000..74833e4b
--- /dev/null
+++ b/src/logic/scripting/lua/libs/libhud.hpp
@@ -0,0 +1,17 @@
+#pragma once
+
+#include "api_lua.hpp"
+
+#include "logic/scripting/scripting_hud.hpp"
+#include "graphics/render/WorldRenderer.hpp"
+#include "engine/Engine.hpp"
+
+template <lua_CFunction func>
+inline int wrap_hud(lua_State* L) {
+    if (scripting::hud == nullptr) {
+        return luaL_error(
+            L, "renderer is not initialized yet, see hud.lua on_hud_open event"
+        );
+    }
+    return lua::wrap<func>(L);
+}
diff --git a/src/logic/scripting/lua/libs/libparticles.cpp b/src/logic/scripting/lua/libs/libparticles.cpp
index d3bccf76..0c468007 100644
--- a/src/logic/scripting/lua/libs/libparticles.cpp
+++ b/src/logic/scripting/lua/libs/libparticles.cpp
@@ -1,11 +1,8 @@
-#include "api_lua.hpp"
+#include "libhud.hpp"
 
-#include "logic/scripting/scripting_hud.hpp"
-#include "graphics/render/WorldRenderer.hpp"
 #include "graphics/render/ParticlesRenderer.hpp"
 #include "graphics/render/Emitter.hpp"
 #include "assets/assets_util.hpp"
-#include "engine/Engine.hpp"
 
 using namespace scripting;
 
@@ -81,10 +78,10 @@ static int l_is_alive(lua::State* L) {
 }
 
 const luaL_Reg particleslib[] = {
-    {"emit", lua::wrap<l_emit>},
-    {"stop", lua::wrap<l_stop>},
-    {"is_alive", lua::wrap<l_is_alive>},
-    {"get_origin", lua::wrap<l_get_origin>},
-    {"set_origin", lua::wrap<l_set_origin>},
+    {"emit", wrap_hud<l_emit>},
+    {"stop", wrap_hud<l_stop>},
+    {"is_alive", wrap_hud<l_is_alive>},
+    {"get_origin", wrap_hud<l_get_origin>},
+    {"set_origin", wrap_hud<l_set_origin>},
     {NULL, NULL}
 };
diff --git a/src/logic/scripting/lua/libs/libtext3d.cpp b/src/logic/scripting/lua/libs/libtext3d.cpp
index f334c85f..4529fc0c 100644
--- a/src/logic/scripting/lua/libs/libtext3d.cpp
+++ b/src/logic/scripting/lua/libs/libtext3d.cpp
@@ -1,10 +1,7 @@
-#include "api_lua.hpp"
+#include "libhud.hpp"
 
-#include "logic/scripting/scripting_hud.hpp"
-#include "graphics/render/WorldRenderer.hpp"
 #include "graphics/render/TextsRenderer.hpp"
 #include "graphics/render/TextNote.hpp"
-#include "engine/Engine.hpp"
 
 using namespace scripting;
 
@@ -99,17 +96,17 @@ static int l_set_rotation(lua::State* L) {
 }
 
 const luaL_Reg text3dlib[] = {
-    {"show", lua::wrap<l_show>},
-    {"hide", lua::wrap<l_hide>},
-    {"get_text", lua::wrap<l_get_text>},
-    {"set_text", lua::wrap<l_set_text>},
-    {"get_pos", lua::wrap<l_get_pos>},
-    {"set_pos", lua::wrap<l_set_pos>},
-    {"get_axis_x", lua::wrap<l_get_axis_x>},
-    {"set_axis_x", lua::wrap<l_set_axis_x>},
-    {"get_axis_y", lua::wrap<l_get_axis_y>},
-    {"set_axis_y", lua::wrap<l_set_axis_y>},
-    {"set_rotation", lua::wrap<l_set_rotation>},
-    {"update_settings", lua::wrap<l_update_settings>},
+    {"show", wrap_hud<l_show>},
+    {"hide", wrap_hud<l_hide>},
+    {"get_text", wrap_hud<l_get_text>},
+    {"set_text", wrap_hud<l_set_text>},
+    {"get_pos", wrap_hud<l_get_pos>},
+    {"set_pos", wrap_hud<l_set_pos>},
+    {"get_axis_x", wrap_hud<l_get_axis_x>},
+    {"set_axis_x", wrap_hud<l_set_axis_x>},
+    {"get_axis_y", wrap_hud<l_get_axis_y>},
+    {"set_axis_y", wrap_hud<l_set_axis_y>},
+    {"set_rotation", wrap_hud<l_set_rotation>},
+    {"update_settings", wrap_hud<l_update_settings>},
     {NULL, NULL}
 };
diff --git a/src/logic/scripting/scripting_hud.cpp b/src/logic/scripting/scripting_hud.cpp
index d6f618cb..478b4f9e 100644
--- a/src/logic/scripting/scripting_hud.cpp
+++ b/src/logic/scripting/scripting_hud.cpp
@@ -65,15 +65,22 @@ void scripting::on_frontend_render() {
 }
 
 void scripting::on_frontend_close() {
+    auto L = lua::get_main_state();
     for (auto& pack : engine->getAllContentPacks()) {
         lua::emit_event(
-            lua::get_main_state(),
+            L,
             pack.id + ":.hudclose",
             [&](lua::State* L) {
                 return lua::pushinteger(L, hud->getPlayer()->getId());
             }
         );
     }
+    lua::pushnil(L);
+    lua::setglobal(L, "hud");
+    lua::pushnil(L);
+    lua::setglobal(L, "gfx");
+
+    scripting::renderer = nullptr;
     scripting::hud = nullptr;
 }