[Server] Add GetSpellsActiveStackingState() script function

apps/openmw-mp/Script/Functions/Spells.cpp

@@ -148,6 +148,17 @@ const char* SpellFunctions::GetSpellsActiveDisplayName(unsigned short pid, unsig
     return player->spellsActiveChanges.activeSpells.at(index).params.mDisplayName.c_str();
 }
 
+bool SpellFunctions::GetSpellsActiveStackingState(unsigned short pid, unsigned int index) noexcept
+{
+    Player* player;
+    GET_PLAYER(pid, player, "");
+
+    if (index >= player->spellsActiveChanges.activeSpells.size())
+        return "invalid";
+
+    return player->spellsActiveChanges.activeSpells.at(index).isStackingSpell;
+}
+
 unsigned int SpellFunctions::GetSpellsActiveEffectCount(unsigned short pid, unsigned int index) noexcept
 {
     Player* player;

apps/openmw-mp/Script/Functions/Spells.hpp

@@ -20,6 +20,7 @@
     {"GetSpellId",                     SpellFunctions::GetSpellId},\
     {"GetSpellsActiveId",              SpellFunctions::GetSpellsActiveId},\
     {"GetSpellsActiveDisplayName",     SpellFunctions::GetSpellsActiveDisplayName},\
+    {"GetSpellsActiveStackingState",   SpellFunctions::GetSpellsActiveStackingState},\
     {"GetSpellsActiveEffectCount",     SpellFunctions::GetSpellsActiveEffectCount},\
     {"GetSpellsActiveEffectId",        SpellFunctions::GetSpellsActiveEffectId},\
     {"GetSpellsActiveEffectArg",       SpellFunctions::GetSpellsActiveEffectArg},\
@@ -167,6 +168,15 @@ public:
     */
     static const char* GetSpellsActiveDisplayName(unsigned short pid, unsigned int index) noexcept;
 
+    /**
+    * \brief Get the spell stacking state at a certain index in a player's latest spells active changes.
+    *
+    * \param pid The player ID whose spells active changes should be used.
+    * \param index The index of the spell.
+    * \return The spell stacking state.
+    */
+    static bool GetSpellsActiveStackingState(unsigned short pid, unsigned int index) noexcept;
+
     /**
     * \brief Get the number of effects at an index in a player's latest spells active changes.
     *