Core/World: implement database support for default map and realm wide world states

Co-Authored-By: Shauren <shauren.trinity@gmail.com>

2 files changed, 42 insertions, 0 deletions

diff --git a/src/server/game/Scripting/ScriptMgr.cpp b/src/server/game/Scripting/ScriptMgr.cpp
index 795b8e997eb..c911afdad87 100644
--- a/src/server/game/Scripting/ScriptMgr.cpp
+++ b/src/server/game/Scripting/ScriptMgr.cpp
@@ -133,6 +133,10 @@ template<>
 struct is_script_database_bound<QuestScript>
     : std::true_type { };
 
+template<>
+struct is_script_database_bound<WorldStateScript>
+    : std::true_type { };
+
 enum Spells
 {
     SPELL_HOTSWAP_VISUAL_SPELL_EFFECT = 40162 // 59084
@@ -2322,6 +2326,7 @@ void ScriptMgr::OnSceneComplete(Player* player, uint32 sceneInstanceID, SceneTem
     tmpscript->OnSceneComplete(player, sceneInstanceID, sceneTemplate);
 }
 
+// Quest
 void ScriptMgr::OnQuestStatusChange(Player* player, Quest const* quest, QuestStatus oldStatus, QuestStatus newStatus)
 {
     ASSERT(player);
@@ -2349,6 +2354,15 @@ void ScriptMgr::OnQuestObjectiveChange(Player* player, Quest const* quest, Quest
     tmpscript->OnQuestObjectiveChange(player, quest, objective, oldAmount, newAmount);
 }
 
+// WorldState
+void ScriptMgr::OnWorldStateValueChange(WorldStateTemplate const* worldStateTemplate, int32 oldValue, int32 newValue, Map const* map)
+{
+    ASSERT(worldStateTemplate);
+
+    GET_SCRIPT(WorldStateScript, worldStateTemplate->ScriptId, tmpscript);
+    tmpscript->OnValueChange(worldStateTemplate->Id, oldValue, newValue, map);
+}
+
 SpellScriptLoader::SpellScriptLoader(char const* name)
     : ScriptObject(name)
 {
@@ -2638,6 +2652,14 @@ QuestScript::QuestScript(char const* name)
 
 QuestScript::~QuestScript() = default;
 
+WorldStateScript::WorldStateScript(char const* name)
+    : ScriptObject(name)
+{
+    ScriptRegistry<WorldStateScript>::Instance()->AddScript(this);
+}
+
+WorldStateScript::~WorldStateScript() = default;
+
 // Specialize for each script type class like so:
 template class TC_GAME_API ScriptRegistry<SpellScriptLoader>;
 template class TC_GAME_API ScriptRegistry<ServerScript>;
@@ -2671,3 +2693,4 @@ template class TC_GAME_API ScriptRegistry<AreaTriggerEntityScript>;
 template class TC_GAME_API ScriptRegistry<ConversationScript>;
 template class TC_GAME_API ScriptRegistry<SceneScript>;
 template class TC_GAME_API ScriptRegistry<QuestScript>;
+template class TC_GAME_API ScriptRegistry<WorldStateScript>;
diff --git a/src/server/game/Scripting/ScriptMgr.h b/src/server/game/Scripting/ScriptMgr.h
index 32ecfb431c7..e5fd8bee5b9 100644
--- a/src/server/game/Scripting/ScriptMgr.h
+++ b/src/server/game/Scripting/ScriptMgr.h
@@ -77,6 +77,7 @@ struct MapEntry;
 struct Position;
 struct QuestObjective;
 struct SceneTemplate;
+struct WorldStateTemplate;
 
 namespace Trinity::ChatCommands { struct ChatCommandBuilder; }
 
@@ -987,6 +988,20 @@ class TC_GAME_API QuestScript : public ScriptObject
         virtual void OnQuestObjectiveChange(Player* /*player*/, Quest const* /*quest*/, QuestObjective const& /*objective*/, int32 /*oldAmount*/, int32 /*newAmount*/) { }
 };
 
+class TC_GAME_API WorldStateScript : public ScriptObject
+{
+    protected:
+
+        WorldStateScript(char const* name);
+
+    public:
+
+        ~WorldStateScript();
+
+        // Called when worldstate changes value, map is optional
+        virtual void OnValueChange([[maybe_unused]] int32 worldStateId, [[maybe_unused]] int32 oldValue, [[maybe_unused]] int32 newValue, [[maybe_unused]] Map const* map) { }
+};
+
 // Manages registration, loading, and execution of scripts.
 class TC_GAME_API ScriptMgr
 {
@@ -1289,6 +1304,10 @@ class TC_GAME_API ScriptMgr
         void OnQuestAcknowledgeAutoAccept(Player* player, Quest const* quest);
         void OnQuestObjectiveChange(Player* player, Quest const* quest, QuestObjective const& objective, int32 oldAmount, int32 newAmount);
 
+    public: /* WorldStateScript */
+
+        void OnWorldStateValueChange(WorldStateTemplate const* worldStateTemplate, int32 oldValue, int32 newValue, Map const* map);
+
     private:
         uint32 _scriptCount;
         bool _scriptIdUpdated;