diff --git a/artifacts/scripting/headers/sfall.h b/artifacts/scripting/headers/sfall.h
index d6e6d6dd..806ec29a 100644
--- a/artifacts/scripting/headers/sfall.h
+++ b/artifacts/scripting/headers/sfall.h
@@ -192,6 +192,7 @@
 #define critter_inven_obj2(obj, type)         sfall_func2("critter_inven_obj2", obj, type)
 #define exec_map_update_scripts               sfall_func0("exec_map_update_scripts")
 #define floor2(value)                         sfall_func1("floor2", value)
+#define get_current_inven_size(obj)           sfall_func1("get_current_inven_size", obj)
 #define intface_hide                          sfall_func0("intface_hide")
 #define intface_is_hidden                     sfall_func0("intface_is_hidden")
 #define intface_redraw                        sfall_func0("intface_redraw")
diff --git a/artifacts/scripting/sfall function notes.txt b/artifacts/scripting/sfall function notes.txt
index b16a6464..4b20aeb1 100644
--- a/artifacts/scripting/sfall function notes.txt	
+++ b/artifacts/scripting/sfall function notes.txt	
@@ -385,6 +385,9 @@ Some utility/math functions are available:
 - works just like vanilla floor function, but returns correct integers for negative values
 - vanilla floor function works exactly the same as ceil for negative values, much like trunc in C/C++
 
+> int sfall_func1("get_current_inven_size", object)
+- returns the current inventory size of the container or the critter
+
 ------------------------
 ------ MORE INFO -------
 ------------------------
diff --git a/sfall/Bugs.cpp b/sfall/Bugs.cpp
index 25f1acfe..ca981e74 100644
--- a/sfall/Bugs.cpp
+++ b/sfall/Bugs.cpp
@@ -470,7 +470,7 @@ noArmor:
 		mov  esi, [esp + 0x1C + 8];                    // weapon
 		test esi, esi;
 		jnz  haveWeapon;
-		cmp  ds:[_dialog_target_is_party], esi;  // esi = 0
+		cmp  ds:[_dialog_target_is_party], esi;        // esi = 0
 		jne  skip;                                     // This is a party member
 		mov  eax, [esp + 0x18 + 8];                    // item_weapon
 		test eax, eax;
diff --git a/sfall/Inventory.cpp b/sfall/Inventory.cpp
index 94a174b0..31da183c 100644
--- a/sfall/Inventory.cpp
+++ b/sfall/Inventory.cpp
@@ -93,7 +93,7 @@ void InventoryKeyPressedHook(DWORD dxKey, bool pressed, DWORD vKey) {
 }
 
 /////////////////////////////////////////////////////////////////
-static DWORD __stdcall sf_item_total_size(TGameObj* critter) {
+DWORD __stdcall sf_item_total_size(TGameObj* critter) {
 	int totalSize;
 	__asm {
 		mov  eax, critter;
@@ -103,17 +103,17 @@ static DWORD __stdcall sf_item_total_size(TGameObj* critter) {
 
 	if ((critter->artFID & 0xF000000) == (OBJ_TYPE_CRITTER << 24)) {
 		TGameObj* item = InvenRightHand(critter);
-		if (item && !(item->flags & 0x2000000)) {
+		if (item && !(item->flags & 0x2000000)) { // ObjectFlag Right_Hand
 			totalSize += ItemSize(item);
 		}
 
 		TGameObj* itemL = InvenLeftHand(critter);
-		if (itemL && item != itemL && !(itemL->flags & 0x1000000)) {
+		if (itemL && item != itemL && !(itemL->flags & 0x1000000)) { // ObjectFlag Left_Hand
 			totalSize += ItemSize(itemL);
 		}
 
 		item = InvenWorn(critter);
-		if (item && !(item->flags & 0x4000000)) {
+		if (item && !(item->flags & 0x4000000)) { // ObjectFlag Worn
 			totalSize += ItemSize(item);
 		}
 	}
diff --git a/sfall/Inventory.h b/sfall/Inventory.h
index 117a8ad9..31971b36 100644
--- a/sfall/Inventory.h
+++ b/sfall/Inventory.h
@@ -19,6 +19,7 @@
 #pragma once
 
 void _stdcall SetInvenApCost(int a);
+DWORD __stdcall sf_item_total_size(TGameObj* critter);
 void InventoryInit();
 void InventoryReset();
 void InventoryKeyPressedHook(DWORD dxKey, bool pressed, DWORD vKey);
diff --git a/sfall/ScriptOps/MetaruleOp.hpp b/sfall/ScriptOps/MetaruleOp.hpp
index 1b400329..957cc08f 100644
--- a/sfall/ScriptOps/MetaruleOp.hpp
+++ b/sfall/ScriptOps/MetaruleOp.hpp
@@ -103,17 +103,18 @@ static void sf_get_metarule_table() {
 		- minArgs/maxArgs - minimum and maximum number of arguments allowed for this function
 */
 static const SfallMetarule metaruleArray[] = {
-	{"get_metarule_table", sf_get_metarule_table, 0, 0},
-	{"validate_test", sf_test, 2, 5},
-	{"spatial_radius", sf_spatial_radius, 1, 1},
 	{"critter_inven_obj2", sf_critter_inven_obj2, 2, 2},
-	{"intface_redraw", sf_intface_redraw, 0, 0},
-	{"intface_show", sf_intface_show, 0, 0},
+	{"exec_map_update_scripts", sf_exec_map_update_scripts, 0, 0},
+	{"floor2", sf_floor2, 1, 1},
+	{"get_current_inven_size", sf_get_current_inven_size, 1, 1},
+	{"get_metarule_table", sf_get_metarule_table, 0, 0},
 	{"intface_hide", sf_intface_hide, 0, 0},
 	{"intface_is_hidden", sf_intface_is_hidden, 0, 0},
-	{"exec_map_update_scripts", sf_exec_map_update_scripts, 0, 0},
+	{"intface_redraw", sf_intface_redraw, 0, 0},
+	{"intface_show", sf_intface_show, 0, 0},
 	{"set_ini_setting", sf_set_ini_setting, 2, 2},
-	{"floor2", sf_floor2, 1, 1},
+	{"spatial_radius", sf_spatial_radius, 1, 1},
+	{"validate_test", sf_test, 2, 5},
 };
 
 static void InitMetaruleTable() {
diff --git a/sfall/ScriptOps/ObjectsOps.hpp b/sfall/ScriptOps/ObjectsOps.hpp
index 67a50c9b..18927ea3 100644
--- a/sfall/ScriptOps/ObjectsOps.hpp
+++ b/sfall/ScriptOps/ObjectsOps.hpp
@@ -558,3 +558,12 @@ static void sf_critter_inven_obj2() {
 		opHandler.printOpcodeError("critter_inven_obj2() - invalid type.");
 	}
 }
+
+static void sf_get_current_inven_size() {
+	TGameObj* invenObj = opHandler.arg(0).asObject();
+	if (invenObj != nullptr) {
+		opHandler.setReturn(sf_item_total_size(invenObj), DATATYPE_INT);
+	} else {
+		opHandler.setReturn(-1);
+	}
+}