private float CalculateSpellCriticalChance(Unit victim, SpellInfo spellInfo, SpellSchoolMask schoolMask, Spell spell = null)
{
if (spellInfo.HasAttribute(SpellAttributes.CantCrit) || spellInfo.DamageClass == SpellDamageClass.None)
{
return(0.0f);
}
if (spellInfo.HasAttribute(SpellAttributes.AlwaysCrit))
{
return(100.0f);
}
float critChance = unit.CritPercentage;
if (victim == null)
{
return(Mathf.Max(critChance, 0.0f));
}
switch (spellInfo.DamageClass)
{
case SpellDamageClass.Magic:
if (!spellInfo.IsPositive)
{
critChance += victim.Auras.TotalAuraModifier(AuraEffectType.ModAttackerSpellCritChance);
}
goto default;
case SpellDamageClass.Melee:
if (!spellInfo.IsPositive)
{
critChance += victim.Auras.TotalAuraModifier(AuraEffectType.ModAttackerMeleeCritChance);
}
goto default;
case SpellDamageClass.Ranged:
if (!spellInfo.IsPositive)
{
critChance += victim.Auras.TotalAuraModifier(AuraEffectType.ModAttackerRangedCritChance);
}
goto default;
default:
critChance += victim.Auras.TotalAuraModifierForCaster(AuraEffectType.ModAttackerSpellCritChanceForCaster, unit.Id);
critChance += victim.Auras.TotalAuraModifier(AuraEffectType.ModAttackerSpellAndWeaponCritChance);
break;
}
IReadOnlyList <AuraEffect> spellCritAuras = unit.GetAuraEffects(AuraEffectType.OverrideSpellCritCalculation);
if (spellCritAuras != null)
{
for (int i = 0; i < spellCritAuras.Count; i++)
{
if (spellCritAuras[i].EffectInfo is AuraEffectInfoOverrideSpellCritCalculation effectInfo)
{
effectInfo.ModifySpellCrit(unit, victim, spellInfo, ref critChance, spell);
}
}
}
return(Mathf.Max(critChance, 0.0f));
}