百分比属性的计算--攻击、防御、血量

Build_God_Api/Build_God_Api/Services/Game/CharacterAttributeCalculateService.cs

@@ -60,32 +60,22 @@ namespace Build_God_Api.Services.Game
             return (attackBonus, defendBonus, hpBonus);
         }
 
-        private async Task<(decimal AttackBonus, decimal DefendBonus, decimal HPBonus, decimal CriticalBonus, decimal CriticalDamageBonus)> CalculateEquipmentBonusAsync(int characterBagId)
+        private async Task<EquipmentAttributeTotals> CalculateEquipmentBonusAsync(int characterBagId)
         {
             var equipmentInstances = await _context.Queryable<EquipmentInstance>()
                 .Where(x => x.CharacterBagId == characterBagId)
                 .ToListAsync();
 
-            decimal attackBonus = 0;
-            decimal defendBonus = 0;
-            decimal hpBonus = 0;
-            decimal criticalBonus = 0;
-            decimal criticalDamage = 0;
-
+            var totals = new EquipmentAttributeTotals();
             foreach (var instance in equipmentInstances)
             {
                 var template = await _context.Queryable<EquipmentTemplate>().FirstAsync(x => x.Id == instance.EquipmentTemplateId);
                 if (template == null || string.IsNullOrEmpty(instance.Attributes)) continue;
 
-                var t = EquipmentAttributeBonus.SumFromJson(instance.Attributes);
-                attackBonus += t.AttackBonus;
-                defendBonus += t.DefendBonus;
-                hpBonus += t.HPBonus;
-                criticalBonus += t.CriticalBonus;
-                criticalDamage += t.CriticalDamageBonus;
+                totals += EquipmentAttributeBonus.SumFromJson(instance.Attributes);
             }
 
-            return (attackBonus, defendBonus, hpBonus, criticalBonus, criticalDamage);
+            return totals;
         }
 
         public async Task<CharacterAttributes> CalculateAttributesAsync(Character character)
@@ -102,37 +92,42 @@ namespace Build_God_Api.Services.Game
             decimal baseCritical = 0;
             decimal baseCriticalDamage = 0;
 
-            decimal bonusAttack = 0;
-            decimal bonusDefend = 0;
-            decimal bonusHP = 0;
+            decimal bonusAttackFlat = 0;
+            decimal bonusDefendFlat = 0;
+            decimal bonusHPFlat = 0;
             decimal bonusCritical = 0;
             decimal bonusCriticalDamage = 0;
+            var equipTotals = new EquipmentAttributeTotals();
 
             var characterBag = await _context.Queryable<CharacterBag>().FirstAsync(x => x.CharacterId == character.Id);
             if (characterBag != null)
             {
                 var (scrapAttack, scrapDefend, scrapHP) = await CalculateScrapBonusAsync(characterBag.Id);
-                var (equipAttack, equipDefend, equipHP, equipCritical, equipmentCriticalDamage) = await CalculateEquipmentBonusAsync(characterBag.Id);
+                equipTotals = await CalculateEquipmentBonusAsync(characterBag.Id);
 
-                bonusAttack = scrapAttack + equipAttack;
-                bonusDefend = scrapDefend + equipDefend;
-                bonusHP = scrapHP + equipHP;
-                bonusCritical = equipCritical;
-                bonusCriticalDamage = equipmentCriticalDamage;
+                bonusAttackFlat = scrapAttack + equipTotals.AttackFixed;
+                bonusDefendFlat = scrapDefend + equipTotals.DefendFixed;
+                bonusHPFlat = scrapHP + equipTotals.HealthFixed;
+                bonusCritical = equipTotals.CriticalRate;
+                bonusCriticalDamage = equipTotals.CriticalDamage;
             }
 
+            decimal maxHp = EquipmentAttributeBonus.ApplyPercentToBaseAndFlat(baseMaxHP, bonusHPFlat, equipTotals.HealthPercent);
+            decimal attack = EquipmentAttributeBonus.ApplyPercentToBaseAndFlat(baseAttack, bonusAttackFlat, equipTotals.AttackPercent);
+            decimal defend = EquipmentAttributeBonus.ApplyPercentToBaseAndFlat(baseDefend, bonusDefendFlat, equipTotals.DefendPercent);
+
             return new CharacterAttributes
             {
-                MaxHP = baseMaxHP + bonusHP,
+                MaxHP = maxHp,
                 BaseMaxHP = baseMaxHP,
-                BonusMaxHP = bonusHP,
+                BonusMaxHP = maxHp - baseMaxHP,
                 CurrentHP = character.CurrentHP,
-                Attack = baseAttack + bonusAttack,
+                Attack = attack,
                 BaseAttack = baseAttack,
-                BonusAttack = bonusAttack,
-                Defend = baseDefend + bonusDefend,
+                BonusAttack = attack - baseAttack,
+                Defend = defend,
                 BaseDefend = baseDefend,
-                BonusDefend = bonusDefend,
+                BonusDefend = defend - baseDefend,
                 CriticalRate = baseCritical + bonusCritical,
                 BaseCriticalRate = baseCritical,
                 BonusCriticalRate = bonusCritical,

Build_God_Api/Build_God_Api/Services/Game/EquipmentAttributeBonus.cs

@@ -10,7 +10,37 @@ namespace Build_God_Api.Services.Game
     }
 
     /// <summary>
-    /// 从装备属性 JSON（与 EquipmentInstance.Attributes 同格式）累加固定类加成
+    /// 单件装备 JSON 或背包多件的属性总和（固定值 + 百分比累加）。百分比为「百分点」累加，如两件 +10% 攻 = 20，参与公式 (基础+固定)×(1+总和/100)。
+    /// </summary>
+    public sealed class EquipmentAttributeTotals
+    {
+        public decimal AttackFixed { get; set; }
+        public decimal AttackPercent { get; set; }
+        public decimal DefendFixed { get; set; }
+        public decimal DefendPercent { get; set; }
+        public decimal HealthFixed { get; set; }
+        public decimal HealthPercent { get; set; }
+        public decimal CriticalRate { get; set; }
+        public decimal CriticalDamage { get; set; }
+
+        public static EquipmentAttributeTotals operator +(EquipmentAttributeTotals a, EquipmentAttributeTotals b)
+        {
+            return new EquipmentAttributeTotals
+            {
+                AttackFixed = a.AttackFixed + b.AttackFixed,
+                AttackPercent = a.AttackPercent + b.AttackPercent,
+                DefendFixed = a.DefendFixed + b.DefendFixed,
+                DefendPercent = a.DefendPercent + b.DefendPercent,
+                HealthFixed = a.HealthFixed + b.HealthFixed,
+                HealthPercent = a.HealthPercent + b.HealthPercent,
+                CriticalRate = a.CriticalRate + b.CriticalRate,
+                CriticalDamage = a.CriticalDamage + b.CriticalDamage
+            };
+        }
+    }
+
+    /// <summary>
+    /// 从装备属性 JSON（与 EquipmentInstance.Attributes 同格式）累加属性
     /// </summary>
     public static class EquipmentAttributeBonus
     {
@@ -19,45 +49,43 @@ namespace Build_God_Api.Services.Game
             PropertyNameCaseInsensitive = true
         };
 
-        public static (decimal AttackBonus, decimal DefendBonus, decimal HPBonus, decimal CriticalBonus, decimal CriticalDamageBonus) SumFromJson(string? attributesJson)
+        public static EquipmentAttributeTotals SumFromJson(string? attributesJson)
         {
-            decimal attackBonus = 0;
-            decimal defendBonus = 0;
-            decimal hpBonus = 0;
-            decimal criticalBonus = 0;
-            decimal criticalDamage = 0;
-
-            if (string.IsNullOrWhiteSpace(attributesJson)) return (attackBonus, defendBonus, hpBonus, criticalBonus, criticalDamage);
+            var totals = new EquipmentAttributeTotals();
+            if (string.IsNullOrWhiteSpace(attributesJson)) return totals;
 
             try
             {
                 var attributes = JsonSerializer.Deserialize<List<EquipmentAttributeDto>>(attributesJson, JsonOptions);
-                if (attributes == null) return (attackBonus, defendBonus, hpBonus, criticalBonus, criticalDamage);
+                if (attributes == null) return totals;
 
                 foreach (var attr in attributes)
                 {
                     switch (attr.Type)
                     {
                         case EquipmentAttributeType.AttackFixed:
-                            attackBonus += attr.Value;
+                            totals.AttackFixed += attr.Value;
                             break;
                         case EquipmentAttributeType.AttackPercent:
+                            totals.AttackPercent += attr.Value;
                             break;
                         case EquipmentAttributeType.DefendFixed:
-                            defendBonus += attr.Value;
+                            totals.DefendFixed += attr.Value;
                             break;
                         case EquipmentAttributeType.DefendPercent:
+                            totals.DefendPercent += attr.Value;
                             break;
                         case EquipmentAttributeType.HealthBonusFixed:
-                            hpBonus += attr.Value;
+                            totals.HealthFixed += attr.Value;
                             break;
                         case EquipmentAttributeType.HealthBonusPercent:
+                            totals.HealthPercent += attr.Value;
                             break;
                         case EquipmentAttributeType.CriticalRate:
-                            criticalBonus += attr.Value;
+                            totals.CriticalRate += attr.Value;
                             break;
                         case EquipmentAttributeType.CriticalDamage:
-                            criticalDamage += attr.Value;
+                            totals.CriticalDamage += attr.Value;
                             break;
                     }
                 }
@@ -67,22 +95,25 @@ namespace Build_God_Api.Services.Game
                 // ignore parse errors — same as character path
             }
 
-            return (attackBonus, defendBonus, hpBonus, criticalBonus, criticalDamage);
+            return totals;
         }
 
-        public static (decimal AttackBonus, decimal DefendBonus, decimal HPBonus, decimal CriticalBonus, decimal CriticalDamageBonus) SumFromManyJson(IEnumerable<string?> jsonList)
+        public static EquipmentAttributeTotals SumFromManyJson(IEnumerable<string?> jsonList)
         {
-            decimal a = 0, d = 0, h = 0, c = 0, cd = 0;
+            var acc = new EquipmentAttributeTotals();
             foreach (var j in jsonList)
             {
-                var t = SumFromJson(j);
-                a += t.AttackBonus;
-                d += t.DefendBonus;
-                h += t.HPBonus;
-                c += t.CriticalBonus;
-                cd += t.CriticalDamageBonus;
+                acc += SumFromJson(j);
             }
-            return (a, d, h, c, cd);
+            return acc;
+        }
+
+        /// <summary>
+        /// （基础 + 固定加成）× (1 + 百分比/100)。百分比为装备上累加的百分点之和。
+        /// </summary>
+        public static decimal ApplyPercentToBaseAndFlat(decimal baseValue, decimal flatBonus, decimal totalPercentPoints)
+        {
+            return (baseValue + flatBonus) * (1 + totalPercentPoints / 100m);
         }
     }
 }

Build_God_Api/Build_God_Api/Services/Game/MonsterAttributeCalculateService.cs

@@ -49,23 +49,27 @@ namespace Build_God_Api.Services.Game
 
             equipment ??= await _db.Queryable<MonsterEquipment>().Where(x => x.MonsterId == monster.Id).ToListAsync();
 
-            var bonus = EquipmentAttributeBonus.SumFromManyJson(equipment.Select(e => e.Attributes));
+            var equip = EquipmentAttributeBonus.SumFromManyJson(equipment.Select(e => e.Attributes));
+
+            decimal maxHp = EquipmentAttributeBonus.ApplyPercentToBaseAndFlat(baseMaxHp, equip.HealthFixed, equip.HealthPercent);
+            decimal attack = EquipmentAttributeBonus.ApplyPercentToBaseAndFlat(baseAttack, equip.AttackFixed, equip.AttackPercent);
+            decimal defend = EquipmentAttributeBonus.ApplyPercentToBaseAndFlat(baseDefend, equip.DefendFixed, equip.DefendPercent);
 
             return new MonsterCombatAttributes
             {
                 BaseMaxHP = baseMaxHp,
-                BonusMaxHP = bonus.HPBonus,
-                BonusAttack = bonus.AttackBonus,
-                BonusDefend = bonus.DefendBonus,
-                BonusCriticalRate = bonus.CriticalBonus,
+                BonusMaxHP = maxHp - baseMaxHp,
+                BonusAttack = attack - baseAttack,
+                BonusDefend = defend - baseDefend,
+                BonusCriticalRate = equip.CriticalRate,
                 BaseCriticalDamage = 0,
-                BonusCriticalDamage = bonus.CriticalDamageBonus,
-                MaxHP = baseMaxHp + bonus.HPBonus,
-                Attack = baseAttack + bonus.AttackBonus,
-                Defend = baseDefend + bonus.DefendBonus,
+                BonusCriticalDamage = equip.CriticalDamage,
+                MaxHP = maxHp,
+                Attack = attack,
+                Defend = defend,
                 BaseAttack = baseAttack,
                 BaseDefend = baseDefend,
-                CriticalRate = baseCrit + bonus.CriticalBonus,
+                CriticalRate = baseCrit + equip.CriticalRate,
                 BaseCriticalRate = baseCrit,
             };
         }