Tweaks: add NWNX_TWEAKS_UNHARDCODE_SPECIAL_ABILITY_TARGET_TYPE (#1817)

CHANGELOG.md

@@ -9,6 +9,7 @@ https://github.com/nwnxee/unified/compare/build8193.37.13...HEAD
 
 ### Added
 - Tweaks: added `NWNX_TWEAKS_RESIST_ENERGY_STACKS_WITH_EPIC_ENERGY_RESISTANCE` to make Resist Energy feats stack with Epic Energy Resistance.
+- Tweaks: added `NWNX_TWEAKS_UNHARDCODE_SPECIAL_ABILITY_TARGET_TYPE` to allow special abilities to be used on target types other than creatures.
 
 ##### New Plugins
 - N/A

Plugins/Tweaks/CMakeLists.txt

@@ -39,4 +39,5 @@ add_plugin(Tweaks
     "EquipUnequipEventTweaks.cpp"
     "CutsceneModeNoTURD.cpp"
     "CanUseItemsWhilePolymorphed.cpp"
-    "ResistEnergyStacksWithEpicEnergyResistance.cpp")
+    "ResistEnergyStacksWithEpicEnergyResistance.cpp"
+    "UnhardcodeSpecialAbilityTargetType.cpp")

Plugins/Tweaks/README.md

@@ -51,6 +51,7 @@ Tweaks stuff. See below.
 | `NWNX_TWEAKS_CUTSCENE_MODE_NO_TURD` | true or false | SetCutsceneMode() will not cause a TURD to be dropped. |
 | `NWNX_TWEAKS_CAN_USE_ITEMS_WHILE_POLYMORPHED` | true or false | Allow all items to be used while polymorphed. |
 | `NWNX_TWEAKS_RESIST_ENERGY_STACKS_WITH_EPIC_ENERGY_RESISTANCE` | true or false | Resist Energy feats stack with Epic Energy Resistance. |
+| `NWNX_TWEAKS_UNHARDCODE_SPECIAL_ABILITY_TARGET_TYPE` | true or false | Allows special abilities to be used on target types other than creatures. |
 
 ## Environment variable values
 

Plugins/Tweaks/UnhardcodeSpecialAbilityTargetType.cpp

@@ -0,0 +1,71 @@
+#include "nwnx.hpp"
+#include "API/CNWSArea.hpp"
+#include "API/CNWSCreature.hpp"
+#include "API/CAppManager.hpp"
+#include "API/CServerExoApp.hpp"
+
+
+namespace Tweaks {
+
+using namespace NWNXLib;
+using namespace NWNXLib::API;
+
+void UnhardcodeSpecialAbilityTargetType() __attribute__((constructor));
+void UnhardcodeSpecialAbilityTargetType()
+{
+    if (!Config::Get<bool>("UNHARDCODE_SPECIAL_ABILITY_TARGET_TYPE", false))
+        return;
+
+    LOG_INFO("Special abilities can also be used on target types other than creatures.");
+
+    static Hooks::Hook s_AddUseTalentOnObjectActionsHook = Hooks::HookFunction(&CNWSCreature::AddUseTalentOnObjectActions,
+        +[](CNWSCreature *pThis, int32_t nType, int32_t nId, OBJECT_ID oidTarget, uint8_t nMultiClass, OBJECT_ID oidItem,
+            int32_t nItemPropertyIndex, uint8_t nCasterLevel, uint8_t nMetaType) -> int32_t
+        {
+            auto *pTargetObject = Utils::AsNWSObject(Utils::GetGameObject(oidTarget));
+            if ((nType == 0 && !pTargetObject) || (nType != 0 && !Utils::AsNWSCreature(pTargetObject)))
+                return false;
+            if (!pThis->m_bAbleToModifyActionQueue)
+                return false;
+
+            const Vector vTargetLocation = pTargetObject->m_vPosition;
+            ObjectID oidTargetArea;
+            if (auto *pArea = pThis->GetArea())
+                oidTargetArea = pArea->m_idSelf;
+            else
+                oidTargetArea = Constants::OBJECT_INVALID;
+
+            switch (nType)
+            {
+                case 0: // TALENT_TYPE_SPELL
+                {
+                    if (oidItem != Constants::OBJECT_INVALID && nItemPropertyIndex != -1)
+                        pThis->UseItem(oidItem, nItemPropertyIndex, 0, oidTarget, vTargetLocation, oidTargetArea);
+                    else
+                    {
+                        pThis->AddCastSpellActions(nId, nMultiClass, 0, nMetaType, false, vTargetLocation, oidTarget,
+                            false, false, false, 0, false, false, -1, nCasterLevel);
+                    }
+                    break;
+                }
+                case 1: // TALENT_TYPE_FEAT
+                {
+                    uint16_t nSubFeat = 0;
+                    if (nId == Constants::Feat::CalledShot)
+                        nSubFeat = rand() % 2 ? 65001 : 65000;
+                    pThis->UseFeat(nId, nSubFeat, oidTarget, oidTargetArea);
+                    break;
+                }
+                case 2: // TALENT_TYPE_SKILL
+                {
+                    pThis->UseSkill(nId, 0, oidTarget, vTargetLocation, oidTargetArea);
+                    break;
+                }
+                default: break;
+            }
+
+            return true;
+        }, Hooks::Order::Final);
+}
+
+}