From 4c26625651a2804832036e2d512d5e2cf2438b7d Mon Sep 17 00:00:00 2001
From: Ovahlord <dreadkiller@gmx.de>
Date: Sun, 17 Jun 2018 13:47:44 +0200
Subject: [PATCH] Core/Spells: Chill of the Grave will no longer gain Runic
 Power when Icy Touch or Howling Blast have no power cost * Chill of the Grave
 will no longer grant Runic Power when Howling blast hits additional targets

---
 .../custom/custom_2018_06_17_01_world.sql     |  3 +
 src/server/scripts/Spells/spell_dk.cpp        | 55 +++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 sql/updates/world/custom/custom_2018_06_17_01_world.sql

diff --git a/sql/updates/world/custom/custom_2018_06_17_01_world.sql b/sql/updates/world/custom/custom_2018_06_17_01_world.sql
new file mode 100644
index 00000000000..f9007bf19c3
--- /dev/null
+++ b/sql/updates/world/custom/custom_2018_06_17_01_world.sql
@@ -0,0 +1,3 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`= 'spell_dk_chill_of_the_grave';
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(-49149, 'spell_dk_chill_of_the_grave');
diff --git a/src/server/scripts/Spells/spell_dk.cpp b/src/server/scripts/Spells/spell_dk.cpp
index ffe2a1b2c0f..27c6b6acfda 100644
--- a/src/server/scripts/Spells/spell_dk.cpp
+++ b/src/server/scripts/Spells/spell_dk.cpp
@@ -56,11 +56,14 @@ enum DeathKnightSpells
     SPELL_DK_ENERGIZE_BLOOD_RUNE                = 81166,
     SPELL_DK_ENERGIZE_FROST_RUNE                = 81168,
     SPELL_DK_ENERGIZE_UNHOLY_RUNE               = 81169,
+    SPELL_DK_FREEZING_FOG                       = 59052,
     SPELL_DK_FROST_FEVER                        = 55095,
     SPELL_DK_FROST_PRESENCE                     = 48266,
     SPELL_DK_FROST_STRIKE                       = 49143,
     SPELL_DK_GHOUL_EXPLODE                      = 47496,
     SPELL_DK_GLYPH_OF_ICEBOUND_FORTITUDE        = 58625,
+    SPELL_DK_HOWLING_BLAST                      = 49184,
+    SPELL_DK_ICY_TOUCH                          = 45477,
     SPELL_DK_IMPROVED_BLOOD_PRESENCE_R1         = 50365,
     SPELL_DK_IMPROVED_BLOOD_PRESENCE_TRIGGERED  = 63611,
     SPELL_DK_IMPROVED_DEATH_STRIKE              = 62905,
@@ -1768,6 +1771,57 @@ class spell_dk_howling_blast : public SpellScriptLoader
         }
 };
 
+// -49149 - Chill of the Grave
+class spell_dk_chill_of_the_grave : public SpellScriptLoader
+{
+    public:
+        spell_dk_chill_of_the_grave() : SpellScriptLoader("spell_dk_chill_of_the_grave") { }
+
+        class spell_dk_chill_of_the_grave_AuraScript : public AuraScript
+        {
+            PrepareAuraScript(spell_dk_chill_of_the_grave_AuraScript);
+
+            bool Validate(SpellInfo const* /*spellInfo*/) override
+            {
+                return ValidateSpellInfo(
+                    {
+                        SPELL_DK_FREEZING_FOG,
+                        SPELL_DK_ICY_TOUCH,
+                        SPELL_DK_HOWLING_BLAST
+                    });
+            }
+
+            bool CheckProc(ProcEventInfo& eventInfo)
+            {
+                if (Spell const* spell = eventInfo.GetProcSpell())
+                {
+                    if (SpellInfo const* spellInfo = spell->GetSpellInfo())
+                        if (GetTarget()->HasAura(SPELL_DK_FREEZING_FOG))
+                            if (spellInfo->Id == SPELL_DK_ICY_TOUCH || spellInfo->Id == SPELL_DK_HOWLING_BLAST)
+                                return false;
+
+                    if (Unit* spellTarget = spell->m_targets.GetUnitTarget())
+                        if (DamageInfo* damageInfo = eventInfo.GetDamageInfo())
+                            if (Unit* procTarget = eventInfo.GetDamageInfo()->GetVictim())
+                                if (spellTarget == procTarget)
+                                    return true;
+                }
+
+                return false;
+            }
+
+            void Register() override
+            {
+                DoCheckProc += AuraCheckProcFn(spell_dk_chill_of_the_grave_AuraScript::CheckProc);
+            }
+        };
+
+        AuraScript* GetAuraScript() const override
+        {
+            return new spell_dk_chill_of_the_grave_AuraScript();
+        }
+};
+
 void AddSC_deathknight_spell_scripts()
 {
     new spell_dk_anti_magic_shell_raid();
@@ -1776,6 +1830,7 @@ void AddSC_deathknight_spell_scripts()
     new spell_dk_blood_boil();
     new spell_dk_blood_gorged();
     new spell_dk_butchery();
+    new spell_dk_chill_of_the_grave();
     new spell_dk_dark_transformation();
     new spell_dk_dark_transformation_aura();
     new spell_dk_death_and_decay();