From 343b781e74b3063c8403195ef4e50654c70296c8 Mon Sep 17 00:00:00 2001
From: "Michael Cook (mackal)" <mcook@mackal.net>
Date: Sat, 23 Jul 2016 18:40:17 -0400
Subject: [PATCH] Implement cast_not_standing and fix Cazic Touch

No idea why this spell field does this, but that's what the client
is doing with it ...
---
 common/shareddb.cpp    | 1 +
 common/spdat.cpp       | 2 +-
 common/spdat.h         | 2 +-
 zone/attack.cpp        | 5 ++++-
 zone/spell_effects.cpp | 3 ++-
 5 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/common/shareddb.cpp b/common/shareddb.cpp
index f35967d50..c9213f3a2 100644
--- a/common/shareddb.cpp
+++ b/common/shareddb.cpp
@@ -1688,6 +1688,7 @@ void SharedDatabase::LoadSpells(void *data, int max_spells) {
 		sp[tempid].pvpresistcalc=atoi(row[178]);
 		sp[tempid].pvpresistcap=atoi(row[179]);
 		sp[tempid].spell_category=atoi(row[180]);
+		sp[tempid].cast_not_standing = atoi(row[184]) != 0;
 		sp[tempid].can_mgb=atoi(row[185]);
 		sp[tempid].dispel_flag = atoi(row[186]);
 		sp[tempid].MinResist = atoi(row[189]);
diff --git a/common/spdat.cpp b/common/spdat.cpp
index 2b6630dfa..572df1afb 100644
--- a/common/spdat.cpp
+++ b/common/spdat.cpp
@@ -1116,7 +1116,7 @@ bool IsCastWhileInvis(uint16 spell_id)
 	if (!IsValidSpell(spell_id))
 		return false;
 	const auto &spell = spells[spell_id];
-	if (spell.sneak)
+	if (spell.sneak || spell.cast_not_standing)
 		return true;
 	return false;
 }
diff --git a/common/spdat.h b/common/spdat.h
index e236d8fbe..b06c50293 100644
--- a/common/spdat.h
+++ b/common/spdat.h
@@ -736,7 +736,7 @@ struct SPDat_Spell_Struct
 /* 181 */	//int pvp_duration; // buffdurationformula for PvP -- PVP_DURATION
 /* 182 */	//int pvp_duration_cap; // buffduration for PvP -- PVP_DURATION_CAP
 /* 183 */	//int pcnpc_only_flag; // valid values are 0, 1, and 2 -- PCNPC_ONLY_FLAG
-/* 184 */	//bool cast_not_standing; // this is checked in the client's EQ_Spell::IsCastWhileInvisSpell, this also blocks SE_InterruptCasting from affecting this spell -- CAST_NOT_STANDING
+/* 184 */	bool cast_not_standing; // this is checked in the client's EQ_Spell::IsCastWhileInvisSpell, this also blocks SE_InterruptCasting from affecting this spell -- CAST_NOT_STANDING
 /* 185 */	bool can_mgb; // 0=no, -1 or 1 = yes -- CAN_MGB
 /* 186 */	int dispel_flag; // -- NO_DISPELL
 /* 187 */	//int npc_category; // -- NPC_MEM_CATEGORY
diff --git a/zone/attack.cpp b/zone/attack.cpp
index 2f3eb26aa..1c7796f42 100644
--- a/zone/attack.cpp
+++ b/zone/attack.cpp
@@ -3027,11 +3027,14 @@ bool Mob::CheckDoubleAttack()
 void Mob::CommonDamage(Mob* attacker, int32 &damage, const uint16 spell_id, const EQEmu::skills::SkillType skill_used, bool &avoidable, const int8 buffslot, const bool iBuffTic, int special) {
 	// This method is called with skill_used=ABJURE for Damage Shield damage.
 	bool FromDamageShield = (skill_used == EQEmu::skills::SkillAbjuration);
+	bool ignore_invul = false;
+	if (IsValidSpell(spell_id))
+		ignore_invul = spell_id == 982 || spells[spell_id].cast_not_standing; // cazic touch
 
 	Log.Out(Logs::Detail, Logs::Combat, "Applying damage %d done by %s with skill %d and spell %d, avoidable? %s, is %sa buff tic in slot %d",
 		damage, attacker?attacker->GetName():"NOBODY", skill_used, spell_id, avoidable?"yes":"no", iBuffTic?"":"not ", buffslot);
 
-	if (GetInvul() || DivineAura()) {
+	if (!ignore_invul && (GetInvul() || DivineAura())) {
 		Log.Out(Logs::Detail, Logs::Combat, "Avoiding %d damage due to invulnerability.", damage);
 		damage = -5;
 	}
diff --git a/zone/spell_effects.cpp b/zone/spell_effects.cpp
index 8ad235915..45225421b 100644
--- a/zone/spell_effects.cpp
+++ b/zone/spell_effects.cpp
@@ -3660,7 +3660,8 @@ void Mob::DoBuffTic(const Buffs_Struct &buff, int slot, Mob *caster)
 		}
 		case SE_InterruptCasting: {
 			if (IsCasting()) {
-				if (zone->random.Roll(spells[buff.spellid].base[i])) {
+				const auto &spell = spells[casting_spell_id];
+				if (!spell.cast_not_standing && zone->random.Roll(spells[buff.spellid].base[i])) {
 					InterruptSpell();
 				}
 			}