Core/Scripts: Added CalcCastTime spell script hook

Port From (https://github.com/TrinityCore/TrinityCore/commit/6713fa4c93f87af351f3ee65c1ff36b52ea85ddb)

Source/Framework/Constants/ScriptsConst.cs

@@ -45,7 +45,8 @@ namespace Framework.Constants
         OnResistAbsorbCalculation,
         AfterCast,
         CalcCritChance,
-        OnPrecast
+        OnPrecast,
+        CalcCastTime
     }
 
     // AuraScript interface - enum used for runtime checks of script function calls

Source/Game/Entities/Object/WorldObject.cs

@@ -1887,8 +1887,9 @@ namespace Game.Entities
             if (!unitCaster)
                 return;
 
-            if (!(spellInfo.HasAttribute(SpellAttr0.IsAbility) || spellInfo.HasAttribute(SpellAttr0.IsTradeskill) || spellInfo.HasAttribute(SpellAttr3.IgnoreCasterModifiers)) &&
-                ((IsPlayer() && spellInfo.SpellFamilyName != 0) || IsCreature()))
+            if (unitCaster.IsPlayer() && unitCaster.ToPlayer().GetCommandStatus(PlayerCommandStates.Casttime))
+                castTime = 0;
+            else if (!(spellInfo.HasAttribute(SpellAttr0.IsAbility) || spellInfo.HasAttribute(SpellAttr0.IsTradeskill) || spellInfo.HasAttribute(SpellAttr3.IgnoreCasterModifiers)) && ((IsPlayer() && spellInfo.SpellFamilyName != 0) || IsCreature()))
                 castTime = unitCaster.CanInstantCast() ? 0 : (int)(castTime * unitCaster.m_unitData.ModCastingSpeed);
             else if (spellInfo.HasAttribute(SpellAttr0.UsesRangedSlot) && !spellInfo.HasAttribute(SpellAttr2.AutoRepeat))
                 castTime = (int)(castTime * unitCaster.m_modAttackSpeedPct[(int)WeaponAttackType.RangedAttack]);

Source/Game/Scripting/SpellScript.cs

@@ -517,6 +517,9 @@ namespace Game.Scripting
         // where function is SpellCastResult function()
         public List<CheckCastHandler> OnCheckCast = new();
 
+        // example: int32 CalcCastTime(int32 castTime) override { return 1500; }
+        public virtual int CalcCastTime(int castTime) { return castTime; }
+
         // where function is void function(DamageInfo damageInfo, ref uint resistAmount, ref int absorbAmount)
         public List<OnCalculateResistAbsorbHandler> OnCalculateResistAbsorb = new();
 

Source/Game/Spells/Spell.cs

@@ -2505,18 +2505,7 @@ namespace Game.Spells
             // Prepare data for triggers
             PrepareDataForTriggerSystem();
 
-            if (m_caster.IsTypeId(TypeId.Player))
-            {
-                if (!m_caster.ToPlayer().GetCommandStatus(PlayerCommandStates.Casttime))
-                {
-                    // calculate cast time (calculated after first CheckCast check to prevent charge counting for first CheckCast fail)
-                    m_casttime = m_spellInfo.CalcCastTime(this);
-                }
-                else
-                    m_casttime = 0;
-            }
-            else
-                m_casttime = m_spellInfo.CalcCastTime(this);
+            m_casttime = CallScriptCalcCastTimeHandlers(m_spellInfo.CalcCastTime(this));
 
             if (m_caster.IsUnit() && m_caster.ToUnit().IsMoving())
             {
@@ -7462,6 +7451,17 @@ namespace Game.Spells
             return retVal;
         }
 
+        int CallScriptCalcCastTimeHandlers(int castTime)
+        {
+            foreach (var script in m_loadedScripts)
+            {
+                script._PrepareScriptCall(SpellScriptHookType.CalcCastTime);
+                castTime = script.CalcCastTime(castTime);
+                script._FinishScriptCall();
+            }
+            return castTime;
+        }
+
         bool CallScriptEffectHandlers(uint effIndex, SpellEffectHandleMode mode)
         {
             // execute script effect handler hooks and check if effects was prevented