Core/Battlegrounds: Move to scripts (#29799)

* Introduce new BattlegroundScript class for map/bg specific scripts
* Remove all sub, zone specific, battleground classes except Arena
* Move all bg zone scripts to new BattlegroundScripts class in script folder
* Remove ZoneScript from Battleground class
* Remove some unused hooks from Battleground

1 files changed, 135 insertions, 0 deletions

diff --git a/src/server/game/Battlegrounds/BattlegroundScript.cpp b/src/server/game/Battlegrounds/BattlegroundScript.cpp
new file mode 100644
index 00000000000..a3bee1d6b38
--- /dev/null
+++ b/src/server/game/Battlegrounds/BattlegroundScript.cpp
@@ -0,0 +1,135 @@
+/*
+ * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "BattlegroundScript.h"
+#include "BattlegroundMgr.h"
+#include "Creature.h"
+#include "GameEventSender.h"
+#include "GameObject.h"
+#include "Log.h"
+#include "Map.h"
+#include "ObjectAccessor.h"
+#include "ObjectMgr.h"
+#include "ScriptMgr.h"
+#include "WorldStateMgr.h"
+
+BattlegroundScript::BattlegroundScript(BattlegroundMap* map) : battlegroundMap(map), battleground(map->GetBG())
+{
+#ifdef TRINITY_API_USE_DYNAMIC_LINKING
+    BattlegroundScriptTemplate const* scriptTemplate = sBattlegroundMgr->FindBattlegroundScriptTemplate(battlegroundMap->GetId(), battlegroundMap->GetBG()->GetTypeID());
+    if (!scriptTemplate)
+        return;
+
+    auto const scriptname = sObjectMgr->GetScriptName(scriptTemplate->ScriptId);
+    ASSERT(!scriptname.empty());
+    // Acquire a strong reference from the script module
+    // to keep it loaded until this object is destroyed.
+    module_reference = sScriptMgr->AcquireModuleReferenceOfScriptName(scriptname);
+#endif // #ifndef TRINITY_API_USE_DYNAMIC_LINKING
+}
+
+Team BattlegroundScript::GetPrematureWinner()
+{
+    Team winner = TEAM_OTHER;
+    if (battleground->GetPlayersCountByTeam(ALLIANCE) >= battleground->GetMinPlayersPerTeam())
+        winner = ALLIANCE;
+    else if (battleground->GetPlayersCountByTeam(HORDE) >= battleground->GetMinPlayersPerTeam())
+        winner = HORDE;
+
+    return winner;
+}
+
+void BattlegroundScript::TriggerGameEvent(uint32 gameEventId, WorldObject* source, WorldObject* target)
+{
+    ProcessEvent(target, gameEventId, source);
+    GameEvents::TriggerForMap(gameEventId, battlegroundMap, source, target);
+    for (auto const& [playerGuid, _] : battleground->GetPlayers())
+        if (Player* player = ObjectAccessor::FindPlayer(playerGuid))
+            GameEvents::TriggerForPlayer(gameEventId, player);
+}
+
+void BattlegroundScript::UpdateWorldState(int32 worldStateId, int32 value, bool hidden) const
+{
+    sWorldStateMgr->SetValue(worldStateId, value, hidden, battlegroundMap);
+}
+
+ArenaScript::ArenaScript(BattlegroundMap* map) : BattlegroundScript(map)
+{
+
+}
+
+GameObject* ArenaScript::CreateObject(uint32 entry, float x, float y, float z, float o, float rotation0, float rotation1, float rotation2, float rotation3, GOState goState) const
+{
+    QuaternionData rot(rotation0, rotation1, rotation2, rotation3);
+    // Temporally add safety check for bad spawns and send log (object rotations need to be rechecked in sniff)
+    if (!rotation0 && !rotation1 && !rotation2 && !rotation3)
+    {
+        TC_LOG_DEBUG("bg.battleground", "Battleground::AddObject: gameoobject [entry: {}] for BG (map: {}) has zeroed rotation fields, "
+            "orientation used temporally, but please fix the spawn", entry, battlegroundMap->GetId());
+
+        rot = QuaternionData::fromEulerAnglesZYX(o, 0.f, 0.f);
+    }
+
+    // Must be created this way, adding to godatamap would add it to the base map of the instance
+    // and when loading it (in go::LoadFromDB()), a new guid would be assigned to the object, and a new object would be created
+    // So we must create it specific for this instance
+    GameObject* go = GameObject::CreateGameObject(entry, battlegroundMap, Position(x, y, z, o), rot, 255, goState);
+    if (!go)
+    {
+        TC_LOG_ERROR("bg.battleground", "Battleground::AddObject: cannot create gameobject (entry: {}) for BG (map: {}, instance id: {})!",
+            entry, battlegroundMap->GetId(), battleground->GetInstanceID());
+        return nullptr;
+    }
+
+    if (!battlegroundMap->AddToMap(go))
+    {
+        delete go;
+        return nullptr;
+    }
+
+    return go;
+}
+
+Creature* ArenaScript::CreateCreature(uint32 entry, float x, float y, float z, float o) const
+{
+    if (!sObjectMgr->GetCreatureTemplate(entry))
+    {
+        TC_LOG_ERROR("bg.battleground", "Battleground::AddCreature: creature template (entry: {}) does not exist for BG (map: {}, instance id: {})!",
+            entry, battlegroundMap->GetId(), battleground->GetInstanceID());
+        return nullptr;
+    }
+
+    Position pos = { x, y, z, o };
+
+    Creature* creature = Creature::CreateCreature(entry, battlegroundMap, pos);
+    if (!creature)
+    {
+        TC_LOG_ERROR("bg.battleground", "Battleground::AddCreature: cannot create creature (entry: {}) for BG (map: {}, instance id: {})!",
+            entry, battlegroundMap->GetId(), battleground->GetInstanceID());
+        return nullptr;
+    }
+
+    creature->SetHomePosition(pos);
+
+    if (!battlegroundMap->AddToMap(creature))
+    {
+        delete creature;
+        return nullptr;
+    }
+
+    return creature;
+}