Can't cast l.o.s/stunned/dead pet

Master's Call

 src/server/scripts/Spells/spell_hunter.cpp | 34 ++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/src/server/scripts/Spells/spell_hunter.cpp b/src/server/scripts/Spells/spell_hunter.cpp
index 2f8a5da..dea4532 100644
--- a/src/server/scripts/Spells/spell_hunter.cpp
+++ b/src/server/scripts/Spells/spell_hunter.cpp
@@ -421,6 +421,39 @@ class spell_hun_masters_call : public SpellScriptLoader
                 return true;
             }
 
+            SpellCastResult CheckCast()
+            {
+                if (Player* caster = GetCaster()->ToPlayer())
+                {
+
+                    if (Pet* pet = caster->GetPet())
+                    {
+                        if (!pet->IsAlive())
+                        {
+                            return SPELL_FAILED_NO_PET;
+                        }
+
+                        if (pet->HasUnitState(UNIT_STATE_STUNNED) || caster->HasUnitState(UNIT_STATE_STUNNED))
+                        {
+                            return SPELL_FAILED_STUNNED;
+                        }
+
+                        if (!pet->IsWithinLOS(caster->GetPositionX(), caster->GetPositionY(), caster->GetPositionZ()))
+                        {
+                            return SPELL_FAILED_LINE_OF_SIGHT;
+                        }
+
+                        if (Unit* target = GetExplTargetUnit())
+                        {
+                            if (!pet->IsWithinLOS(target->GetPositionX(), target->GetPositionY(), target->GetPositionZ()))
+                                return SPELL_FAILED_LINE_OF_SIGHT;
+                        }
+                    }
+                }
+
+                return SPELL_CAST_OK;
+            }
+
             void HandleDummy(SpellEffIndex /*effIndex*/)
             {
                 if (Unit* ally = GetHitUnit())
@@ -445,6 +478,7 @@ class spell_hun_masters_call : public SpellScriptLoader
 
             void Register() OVERRIDE
             {
+                OnCheckCast       += SpellCheckCastFn(spell_hun_masters_call_SpellScript::CheckCast);
                 OnEffectHitTarget += SpellEffectFn(spell_hun_masters_call_SpellScript::HandleDummy, EFFECT_0, SPELL_EFFECT_DUMMY);
                 OnEffectHitTarget += SpellEffectFn(spell_hun_masters_call_SpellScript::HandleScriptEffect, EFFECT_1, SPELL_EFFECT_SCRIPT_EFFECT);
             }