Scripts/Spells: Mount check aura for Gryphon Hatchling & Wind Rider Cub (#26897)

Closes #26600

(cherry picked from commit 5f71c40b969c07f950e3dceb99037c7685512e71)

sql/updates/world/master/2022_03_17_06_world_2021_09_26_03_world.sql

@@ -0,0 +1,10 @@
+--
+UPDATE `creature_template` SET `unit_flags` = 768, `flags_extra` = `flags_extra`|512 WHERE `entry` IN (36908,36909);
+DELETE FROM `creature_template_addon` WHERE `entry` IN (36908,36909);
+INSERT INTO `creature_template_addon` (`entry`, `path_id`, `mount`, `bytes1`, `bytes2`, `emote`, `visibilityDistanceType`, `auras`) VALUES
+(36908,0,0,0,1,0,0,'69641'),
+(36909,0,0,0,1,0,0,'69641');
+
+DELETE FROM `spell_script_names` WHERE `spell_id` = 69641 AND `ScriptName` = 'spell_gen_gryphon_wyvern_mount_check';
+INSERT INTO `spell_script_names` (`spell_id`,`ScriptName`) VALUES
+(69641,'spell_gen_gryphon_wyvern_mount_check');

src/server/scripts/Spells/spell_generic.cpp

@@ -1843,6 +1843,37 @@ class spell_gen_gnomish_transporter : public SpellScript
     }
 };
 
+// 69641 - Gryphon/Wyvern Pet - Mounting Check Aura
+class spell_gen_gryphon_wyvern_mount_check : public AuraScript
+{
+    PrepareAuraScript(spell_gen_gryphon_wyvern_mount_check);
+
+    void HandleEffectPeriodic(AuraEffect const* /*aurEff*/)
+    {
+        Unit* target = GetTarget();
+        Unit* owner = target->GetOwner();
+
+        if (!owner)
+            return;
+
+        if (owner->IsMounted())
+        {
+            target->SetAnimTier(AnimTier::Fly);
+            target->SetDisableGravity(true);
+        }
+        else
+        {
+            target->SetAnimTier(AnimTier::Ground);
+            target->SetDisableGravity(false);
+        }
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_gen_gryphon_wyvern_mount_check::HandleEffectPeriodic, EFFECT_0, SPELL_AURA_PERIODIC_DUMMY);
+    }
+};
+
 enum Interrupt
 {
     SPELL_GEN_THROW_INTERRUPT           = 32747
@@ -4831,6 +4862,7 @@ void AddSC_generic_spell_scripts()
     RegisterSpellScript(spell_gen_gadgetzan_transporter_backfire);
     RegisterSpellScript(spell_gen_gift_of_naaru);
     RegisterSpellScript(spell_gen_gnomish_transporter);
+    RegisterSpellScript(spell_gen_gryphon_wyvern_mount_check);
     RegisterSpellScriptWithArgs(spell_gen_increase_stats_buff, "spell_pal_blessing_of_kings");
     RegisterSpellScriptWithArgs(spell_gen_increase_stats_buff, "spell_pal_blessing_of_might");
     RegisterSpellScriptWithArgs(spell_gen_increase_stats_buff, "spell_dru_mark_of_the_wild");