Make arguments in getequipweaponlv command optional

doc/script_commands.txt

@@ -2642,12 +2642,15 @@ this is +10:
 
 ---------------------------------------
 
-*getequipweaponlv(<equipment slot>{,<char_id>})
+*getequipweaponlv({<equipment slot>,<char_id>})
 
 This function returns the weapon level for the weapon equipped in the specified 
 equipment slot on the invoking character. For a list of equipment slots see 
 'getequipid'.
 
+If no arguments are provided. Weapon level for the item calling this function
+assuming it is called by an item script. Otherwise, 0 will be returned.
+
 Only EQI_HAND_L and EQI_HAND_R normally make sense, since only weapons have
 a weapon level. You can, however, probably, use this field for other equippable
 custom items as a flag or something.

src/map/script.c

@@ -8392,14 +8392,25 @@ BUILDIN_FUNC(getequiprefinerycnt)
  * return (npc)
  *	x : weapon level
  *	0 : false
- * getequipweaponlv(<equipment slot>{,<char_id>})
+ * getequipweaponlv({<equipment slot>,<char_id>})
  *------------------------------------------*/
 BUILDIN_FUNC(getequipweaponlv)
 {
 	int i = -1,num;
 	TBL_PC *sd;
 
-	num = script_getnum(st,2);
+	if (!script_hasdata(st, 2)) {
+		if ((sd = script_rid2sd(st)) != NULL && current_equip_item_index < MAX_INVENTORY && sd->inventory_data[current_equip_item_index])
+		{
+			script_pushint(st, sd->inventory_data[current_equip_item_index]->wlv);
+		}
+		else {
+			script_pushint(st, 0);
+		}
+		return SCRIPT_CMD_SUCCESS;
+	}
+
+	num = script_getnum(st, 2);
 
 	if (!script_charid2sd(3, sd)) {
 		script_pushint(st,0);
@@ -21439,7 +21450,7 @@ struct script_function buildin_func[] = {
 	BUILDIN_DEF(getequipisequiped,"i?"),
 	BUILDIN_DEF(getequipisenableref,"i?"),
 	BUILDIN_DEF(getequiprefinerycnt,"i?"),
-	BUILDIN_DEF(getequipweaponlv,"i?"),
+	BUILDIN_DEF(getequipweaponlv,"??"),
 	BUILDIN_DEF(getequippercentrefinery,"i?"),
 	BUILDIN_DEF(successrefitem,"i??"),
 	BUILDIN_DEF(failedrefitem,"i?"),