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Core/Spells: Implement sqrt based aoe damage diminishing

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Port From (https://github.com/TrinityCore/TrinityCore/commit/42a6e0eb1afa431fc1efe7d4c5a62758fed42684)
This commit is contained in:
hondacrx
2023-09-14 04:24:19 -04:00
parent 572bab53e4
commit 6975212812
5 changed files with 129 additions and 12 deletions
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Source/Game/Spells/Spell.cs
+56 -5
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@@ -2108,6 +2108,23 @@ namespace Game.Spells
m_destTargets[effIndex] = dest;
}
int GetUnitTargetIndexForEffect(ObjectGuid target, uint effect)
{
int index = 0;
foreach (TargetInfo uniqueTargetInfo in m_UniqueTargetInfo)
{
if (uniqueTargetInfo.MissCondition == SpellMissInfo.None && (uniqueTargetInfo.EffectMask & (1 << (int)effect)) != 0)
{
if (uniqueTargetInfo.TargetGUID == target)
break;
++index;
}
}
return index;
}
public long GetUnitTargetCountForEffect(uint effect)
{
return m_UniqueTargetInfo.Count(targetInfo => targetInfo.MissCondition == SpellMissInfo.None && (targetInfo.EffectMask & (1 << (int)effect)) != 0);
@@ -7277,16 +7294,42 @@ namespace Game.Spells
if (m_originalCaster != null && m_damage > 0)
{
if (spellEffectInfo.IsTargetingArea() || spellEffectInfo.IsAreaAuraEffect() || spellEffectInfo.IsEffect(SpellEffectName.PersistentAreaAura) || m_spellInfo.HasAttribute(SpellAttr5.TreatAsAreaEffect))
bool isAoeTarget = spellEffectInfo.IsTargetingArea() || spellEffectInfo.IsAreaAuraEffect() || spellEffectInfo.IsEffect(SpellEffectName.PersistentAreaAura);
if (isAoeTarget || m_spellInfo.HasAttribute(SpellAttr5.TreatAsAreaEffect))
{
m_damage = unit.CalculateAOEAvoidance(m_damage, (uint)m_spellInfo.SchoolMask, m_originalCaster.GetGUID());
if (m_originalCaster.IsPlayer())
{
// cap damage of player AOE
long targetAmount = GetUnitTargetCountForEffect(spellEffectInfo.EffectIndex);
if (targetAmount > 20)
m_damage = (int)(m_damage * 20 / targetAmount);
long targetCount = !isAoeTarget && m_spellValue.ParentSpellTargetCount.HasValue ? m_spellValue.ParentSpellTargetCount.Value : GetUnitTargetCountForEffect(spellEffectInfo.EffectIndex);
int targetIndex = !isAoeTarget && m_spellValue.ParentSpellTargetIndex.HasValue ? m_spellValue.ParentSpellTargetIndex.Value : GetUnitTargetIndexForEffect(targetInfo.TargetGUID, spellEffectInfo.EffectIndex);
// sqrt target cap damage calculation
if (m_spellInfo.SqrtDamageAndHealingDiminishing.MaxTargets != 0
&& targetCount > m_spellInfo.SqrtDamageAndHealingDiminishing.MaxTargets
&& targetIndex >= m_spellInfo.SqrtDamageAndHealingDiminishing.NumNonDiminishedTargets)
m_damage = (int)(m_damage * Math.Sqrt((float)m_spellInfo.SqrtDamageAndHealingDiminishing.MaxTargets / Math.Min(SpellConst.AoeDamageTargetCap, targetCount)));
if (targetCount > SpellConst.AoeDamageTargetCap)
m_damage = (int)(m_damage * SpellConst.AoeDamageTargetCap / targetCount);
}
}
}
if (m_originalCaster && m_healing > 0)
{
bool isAoeTarget = spellEffectInfo.IsTargetingArea() || spellEffectInfo.IsAreaAuraEffect() || spellEffectInfo.IsEffect(SpellEffectName.PersistentAreaAura);
if (isAoeTarget || m_spellInfo.HasAttribute(SpellAttr5.TreatAsAreaEffect))
{
if (m_originalCaster.IsPlayer())
{
long targetCount = !isAoeTarget && m_spellValue.ParentSpellTargetCount.HasValue ? m_spellValue.ParentSpellTargetCount.Value : GetUnitTargetCountForEffect(spellEffectInfo.EffectIndex);
int targetIndex = !isAoeTarget && m_spellValue.ParentSpellTargetIndex.HasValue ? m_spellValue.ParentSpellTargetIndex.Value : GetUnitTargetIndexForEffect(targetInfo.TargetGUID, spellEffectInfo.EffectIndex);
// sqrt target cap healing calculation
if (m_spellInfo.SqrtDamageAndHealingDiminishing.MaxTargets != 0
&& targetCount > m_spellInfo.SqrtDamageAndHealingDiminishing.MaxTargets
&& targetIndex >= m_spellInfo.SqrtDamageAndHealingDiminishing.NumNonDiminishedTargets)
m_healing = (int)(m_healing * Math.Sqrt((float)m_spellInfo.SqrtDamageAndHealingDiminishing.MaxTargets / Math.Min(SpellConst.AoeDamageTargetCap, targetCount)));
}
}
@@ -7407,6 +7450,12 @@ namespace Game.Spells
case SpellValueMod.Duration:
m_spellValue.Duration = value;
break;
case SpellValueMod.ParentSpellTargetCount:
m_spellValue.ParentSpellTargetCount = value;
break;
case SpellValueMod.ParentSpellTargetIndex:
m_spellValue.ParentSpellTargetIndex = value;
break;
}
}
@@ -8796,6 +8845,8 @@ namespace Game.Spells
public float DurationMul;
public float CriticalChance;
public int? Duration;
public int? ParentSpellTargetCount;
public int? ParentSpellTargetIndex;
}
// Spell modifier (used for modify other spells)