Core/Misc: Fixed resistance calculate for Mutated Transformation and Twilight Bloodbolt

Port From (https://github.com/TrinityCore/TrinityCore/commit/4110a06e8193329c31cb9d59d346294835fd51a5)

Source/Framework/Constants/ScriptsConst.cs

@@ -42,6 +42,7 @@ namespace Framework.Constants
         CheckCast,
         BeforeCast,
         OnCast,
+        OnResistAbsorbCalculation,
         AfterCast,
         CalcCritChance
     }

Source/Game/Entities/Unit/Unit.Spells.cs

@@ -1925,7 +1925,7 @@ namespace Game.Entities
             }
         }
 
-        public void CalculateSpellDamageTaken(SpellNonMeleeDamage damageInfo, int damage, SpellInfo spellInfo, WeaponAttackType attackType = WeaponAttackType.BaseAttack, bool crit = false)
+        public void CalculateSpellDamageTaken(SpellNonMeleeDamage damageInfo, int damage, SpellInfo spellInfo, WeaponAttackType attackType = WeaponAttackType.BaseAttack, bool crit = false, Spell spell = null)
         {
             if (damage < 0)
                 return;
@@ -2032,7 +2032,7 @@ namespace Game.Entities
             damageInfo.damage = (uint)damage;
             damageInfo.originalDamage = (uint)damage;
             DamageInfo dmgInfo = new(damageInfo, DamageEffectType.SpellDirect, WeaponAttackType.BaseAttack, ProcFlagsHit.None);
-            CalcAbsorbResist(dmgInfo);
+            CalcAbsorbResist(dmgInfo, spell);
             damageInfo.absorb = dmgInfo.GetAbsorb();
             damageInfo.resist = dmgInfo.GetResist();
 

Source/Game/Entities/Unit/Unit.cs

@@ -1982,7 +1982,7 @@ namespace Game.Entities
                 else
                 {
                     var raceEntry = CliDB.ChrRacesStorage.LookupByKey(GetRace());
-                    return raceEntry.CreatureType;
+                    return  (CreatureType)raceEntry.CreatureType;
                 }
             }
             else
@@ -3282,13 +3282,12 @@ namespace Game.Entities
             return victimResistance / (victimResistance + resistanceConstant);
         }
 
-        public static void CalcAbsorbResist(DamageInfo damageInfo)
+        public static void CalcAbsorbResist(DamageInfo damageInfo, Spell spell = null)
         {
             if (!damageInfo.GetVictim() || !damageInfo.GetVictim().IsAlive() || damageInfo.GetDamage() == 0)
                 return;
 
             uint resistedDamage = CalcSpellResistedDamage(damageInfo.GetAttacker(), damageInfo.GetVictim(), damageInfo.GetDamage(), damageInfo.GetSchoolMask(), damageInfo.GetSpellInfo());
-            damageInfo.ResistDamage(resistedDamage);
 
             // Ignore Absorption Auras
             float auraAbsorbMod = 0f;
@@ -3300,6 +3299,10 @@ namespace Game.Entities
             MathFunctions.RoundToInterval(ref auraAbsorbMod, 0.0f, 100.0f);
 
             int absorbIgnoringDamage = (int)MathFunctions.CalculatePct(damageInfo.GetDamage(), auraAbsorbMod);
+            if (spell != null)
+                spell.CallScriptOnResistAbsorbCalculateHandlers(damageInfo, ref resistedDamage, ref absorbIgnoringDamage);
+
+            damageInfo.ResistDamage(resistedDamage);
             damageInfo.ModifyDamage(-absorbIgnoringDamage);
 
             // We're going to call functions which can modify content of the list during iteration over it's elements

Source/Game/Scripting/SpellScript.cs

@@ -148,6 +148,7 @@ namespace Game.Scripting
         // internal use classes & functions
         // DO NOT OVERRIDE THESE IN SCRIPTS
         public delegate SpellCastResult SpellCheckCastFnType();
+        public delegate void SpellOnResistAbsorbCalculateFnType(DamageInfo damageInfo, ref uint resistAmount, ref int absorbAmount);
         public delegate void SpellEffectFnType(uint index);
         public delegate void SpellBeforeHitFnType(SpellMissInfo missInfo);
         public delegate void SpellHitFnType();
@@ -184,6 +185,21 @@ namespace Game.Scripting
             SpellCheckCastFnType _checkCastHandlerScript;
         }
 
+        public class OnCalculateResistAbsorbHandler
+        {
+            public OnCalculateResistAbsorbHandler(SpellOnResistAbsorbCalculateFnType onResistAbsorbCalculateHandlerScript)
+            {
+                _onCalculateResistAbsorbHandlerScript = onResistAbsorbCalculateHandlerScript;
+            }
+
+            public void Call(DamageInfo damageInfo, ref uint resistAmount, ref int absorbAmount)
+            {
+                _onCalculateResistAbsorbHandlerScript(damageInfo, ref resistAmount, ref absorbAmount);
+            }
+
+            SpellOnResistAbsorbCalculateFnType _onCalculateResistAbsorbHandlerScript;
+        }
+        
         public class EffectHandler : EffectHook
         {
             public EffectHandler(SpellEffectFnType pEffectHandlerScript, uint effIndex, SpellEffectName effName) : base(effIndex)
@@ -498,6 +514,9 @@ namespace Game.Scripting
         // where function is SpellCastResult function()
         public List<CheckCastHandler> OnCheckCast = new();
 
+        // where function is void function(DamageInfo damageInfo, ref uint resistAmount, ref int absorbAmount)
+        public List<OnCalculateResistAbsorbHandler> OnCalculateResistAbsorb = new();
+
         // where function is void function(uint effIndex)
         public List<EffectHandler> OnEffectLaunch = new();
         public List<EffectHandler> OnEffectLaunchTarget = new();

Source/Game/Spells/Spell.cs

@@ -7344,6 +7344,19 @@ namespace Game.Spells
             }
         }
 
+        public void CallScriptOnResistAbsorbCalculateHandlers(DamageInfo damageInfo, ref uint resistAmount, ref int absorbAmount)
+        {
+            foreach (var script in m_loadedScripts)
+            {
+                script._PrepareScriptCall(SpellScriptHookType.OnResistAbsorbCalculation);
+
+                foreach (var hook in script.OnCalculateResistAbsorb)
+                    hook.Call(damageInfo, ref resistAmount, ref absorbAmount);
+
+                script._FinishScriptCall();
+            }
+        }
+        
         bool CheckScriptEffectImplicitTargets(uint effIndex, uint effIndexToCheck)
         {
             // Skip if there are not any script

Source/Game/Spells/SpellManager.cs

@@ -3112,6 +3112,15 @@ namespace Game.Entities
                         spellEffectInfo.ApplyAuraName = AuraType.PeriodicTriggerSpell;
                     });
                 });
+
+                // Lich Pet
+                ApplySpellFix(new [] { 70050 }, spellInfo =>
+                {
+                    ApplySpellEffectFix(spellInfo, 0, spellEffectInfo =>
+                    {
+                        spellEffectInfo.TriggerSpell = 70049;
+                    });
+                });
             }
 
             // Allows those to crit
@@ -3258,8 +3267,9 @@ namespace Game.Entities
                 43109, // Throw Torch
                 58552, // Return to Orgrimmar
                 58533, // Return to Stormwind
-                21855,  // Challenge Flag
-                51122  // Fierce Lightning Stike
+                21855, // Challenge Flag
+                51122, // Fierce Lightning Stike
+                71848  // Toxic Wasteling Find Target
             }, spellInfo =>
             {
                 spellInfo.MaxAffectedTargets = 1;
@@ -3659,6 +3669,12 @@ namespace Game.Entities
                 spellInfo.DurationEntry = CliDB.SpellDurationStorage.LookupByKey(4); // 2 minutes
             });
 
+            // Dark Conclave Ritualist Channel
+            ApplySpellFix(new [] { 38469 }, spellInfo =>
+            {
+                spellInfo.RangeEntry = CliDB.SpellRangeStorage.LookupByKey(6);  // 100yd
+            });
+
             //
             // VIOLET HOLD SPELLS
             //
@@ -3927,13 +3943,6 @@ namespace Game.Entities
                 });
             });
 
-            // Mutated Transformation (Professor Putricide)
-            ApplySpellFix(new[] { 70402 }, spellInfo =>
-            {
-                // Resistance is calculated inside of SpellScript
-                spellInfo.AttributesEx4 |= SpellAttr4.IgnoreResistances;
-            });
-
             // Empowered Flare (Blood Prince Council)
             ApplySpellFix(new[] { 71708 }, spellInfo =>
             {