Core/SmartScripts: Add SMART_TARGET_LOOT_RECIPIENTS. Does what it says on the tin.

Use this new target type to fix The Rider of Blood, The Rider of Frost, The Rider of the Unholy. Closes #17817.

3 files changed, 20 insertions, 1 deletions

diff --git a/src/server/game/AI/SmartScripts/SmartScript.cpp b/src/server/game/AI/SmartScripts/SmartScript.cpp
index c8b640d3683..9a3e864051a 100644
--- a/src/server/game/AI/SmartScripts/SmartScript.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScript.cpp
@@ -2751,6 +2751,23 @@ ObjectList* SmartScript::GetTargets(SmartScriptHolder const& e, Unit* invoker /*
                     l->push_back(target);
             break;
         }
+        case SMART_TARGET_LOOT_RECIPIENTS:
+        {
+            if (me)
+            {
+                if (Group* lootGroup = me->GetLootRecipientGroup())
+                {
+                    for (GroupReference* it = lootGroup->GetFirstMember(); it != nullptr; it = it->next())
+                        if (Player* recipient = it->GetSource())
+                            l->push_back(recipient);
+                }
+                else
+                {
+                    if (Player* recipient = me->GetLootRecipient())
+                        l->push_back(recipient);
+                }
+            }
+        }
         case SMART_TARGET_POSITION:
         case SMART_TARGET_NONE:
         default:
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp b/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
index f0709eb9216..acb5022bb3f 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
@@ -374,6 +374,7 @@ bool SmartAIMgr::IsTargetValid(SmartScriptHolder const& e)
         case SMART_TARGET_CLOSEST_ENEMY:
         case SMART_TARGET_CLOSEST_FRIENDLY:
         case SMART_TARGET_STORED:
+        case SMART_TARGET_LOOT_RECIPIENTS:
             break;
         default:
             TC_LOG_ERROR("sql.sql", "SmartAIMgr: Not handled target_type(%u), Entry %d SourceType %u Event %u Action %u, skipped.", e.GetTargetType(), e.entryOrGuid, e.GetScriptType(), e.event_id, e.GetActionType());
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.h b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
index 8b55c3e138c..ebebc761e0c 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.h
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
@@ -1096,8 +1096,9 @@ enum SMARTAI_TARGETS
     SMART_TARGET_THREAT_LIST                    = 24,   // All units on creature's threat list
     SMART_TARGET_CLOSEST_ENEMY                  = 25,   // maxDist, playerOnly
     SMART_TARGET_CLOSEST_FRIENDLY               = 26,   // maxDist, playerOnly
+    SMART_TARGET_LOOT_RECIPIENTS                = 27,   // all players that have tagged this creature (for kill credit)
 
-    SMART_TARGET_END                            = 27
+    SMART_TARGET_END                            = 28
 };
 
 struct SmartTarget