feat(ui): implement Script_GetBonusBarOffset

src/ui/game/ActionBarScript.cpp

@@ -83,7 +83,9 @@ int32_t Script_IsActionInRange(lua_State* L) {
 }
 
 int32_t Script_GetBonusBarOffset(lua_State* L) {
-    WHOA_UNIMPLEMENTED(0);
+    lua_pushnumber(L, CGActionBar::GetBonusBarOffset());
+
+    return 1;
 }
 
 int32_t Script_GetMultiCastBarOffset(lua_State* L) {

src/ui/game/CGActionBar.cpp

@@ -1,4 +1,9 @@
 #include "ui/game/CGActionBar.hpp"
 
+uint32_t CGActionBar::s_bonusBarOffset;
 uint32_t CGActionBar::s_currentPage;
 uint32_t CGActionBar::s_tempPageActiveFlags;
+
+uint32_t CGActionBar::GetBonusBarOffset() {
+    return CGActionBar::s_bonusBarOffset;
+}

src/ui/game/CGActionBar.hpp

@@ -5,9 +5,16 @@
 
 class CGActionBar {
     public:
-        // Static variables
+        // Public static variables
         static uint32_t s_currentPage;
         static uint32_t s_tempPageActiveFlags;
+
+        // Public static functions
+        static uint32_t GetBonusBarOffset();
+
+    private:
+        // Private static variables
+        static uint32_t s_bonusBarOffset;
 };
 
 #endif