修改对战的伤害计算公式。

Build_God_Api/Build_God_Api/Dto/CharacterDto.cs

@@ -19,6 +19,8 @@
         public decimal CriticalRate { get; set; }
         public decimal BaseCriticalRate { get; set; }
         public decimal BonusCriticalRate { get; set; }
+        public decimal BaseCriticalDamage { get; set; }
+        public decimal BonusCriticalDamage { get; set; }
         public string ProfessionName { get; set; }
         public decimal Money { get; set; }
         public decimal CurrentExp { get; set; }

Build_God_Api/Build_God_Api/Dto/MonsterDtos.cs

@@ -53,6 +53,12 @@ namespace Build_God_Api.Dto
         public int Defense { get; set; }
         public decimal CriticalRate { get; set; }
 
+        /// <summary>基础暴击伤害加成百分比（当前为 0）</summary>
+        public decimal BaseCriticalDamage { get; set; }
+
+        /// <summary>装备等提供的暴击伤害加成百分比</summary>
+        public decimal BonusCriticalDamage { get; set; }
+
         public List<MonsterRewardDto>? Rewards { get; set; }
         public List<MonsterEquipmentDto>? Equipment { get; set; }
     }

Build_God_Api/Build_God_Api/Services/BattleService.cs

@@ -72,12 +72,20 @@ namespace Build_God_Api.Services
                 {
                     round++;
 
-                    var playerDamage = CalculateDamage(playerAttack, monsterDefend, playerCriticalRate);
+                    var playerDamage = CalculateDamage(
+                        playerAttack,
+                        monsterDefend,
+                        playerCriticalRate,
+                        CombatAttributeFormula.ResolveCriticalDamageBonusPercent(attributes.BaseCriticalDamage, attributes.BonusCriticalDamage));
                     monsterHealth -= playerDamage;
 
                     if (monsterHealth <= 0) break;
 
-                    var monsterDamage = CalculateDamage(monsterAttack, playerDefend, monsterStats.CriticalRate);
+                    var monsterDamage = CalculateDamage(
+                        monsterAttack,
+                        playerDefend,
+                        monsterStats.CriticalRate,
+                        CombatAttributeFormula.ResolveCriticalDamageBonusPercent(monsterStats.BaseCriticalDamage, monsterStats.BonusCriticalDamage));
                     playerHealth -= monsterDamage;
                 }
 
@@ -124,20 +132,22 @@ namespace Build_God_Api.Services
             }
         }
 
-        private int CalculateDamage(int attack, int defend, decimal criticalRate)
+        private int CalculateDamage(int attack, int defend, decimal criticalRatePercent, decimal criticalDamageBonusPercent)
         {
-            var baseDamage = Math.Max(1, attack - defend);
+            var baseDamage = CombatAttributeFormula.CalculateBaseDamageBeforeCritical(attack, defend);
 
             var random = Random.Shared.NextDouble();
-            var isCritical = random < (double)criticalRate / 100;
+            var isCritical = random < (double)criticalRatePercent / 100;
 
+            var critMult = 1m + criticalDamageBonusPercent / 100m;
+            decimal working = baseDamage;
             if (isCritical)
             {
-                baseDamage = (int)(baseDamage * 1.5);
+                working *= critMult;
             }
 
             var variance = Random.Shared.Next(90, 111) / 100m;
-            return (int)(baseDamage * variance);
+            return Math.Max(1, (int)(working * variance));
         }
 
         private async Task<BattleRewardDto?> GrantReward(int characterId, MonsterReward reward)

Build_God_Api/Build_God_Api/Services/CharacterService.cs

@@ -299,6 +299,8 @@ namespace Build_God_Api.Services
                     CriticalRate = attrs.CriticalRate,
                     BaseCriticalRate = attrs.BaseCriticalRate,
                     BonusCriticalRate = attrs.BonusCriticalRate,
+                    BaseCriticalDamage = attrs.BaseCriticalDamage,
+                    BonusCriticalDamage = attrs.BonusCriticalDamage,
                     ProfessionName = profession?.Name,
                     Money = c.Money,
                     CurrentExp = c.CurrentExp,

Build_God_Api/Build_God_Api/Services/Game/CombatAttributeFormula.cs

@@ -7,6 +7,34 @@ namespace Build_God_Api.Services.Game
     /// </summary>
     public static class CombatAttributeFormula
     {
+        /// <summary>
+        /// 装备/角色未提供「暴击伤害」加成（百分比）时，用于暴击倍率的默认加成：倍率 = 1 + 该值/100（即 50 表示 1.5 倍）。
+        /// </summary>
+        public const decimal DefaultCriticalDamageBonusPercent = 50m;
+
+        /// <summary>
+        /// 暴击伤害加成百分比：若属性总和大于 0 则用属性（通常为装备「暴击伤害-百分比」累加），否则用 <see cref="DefaultCriticalDamageBonusPercent"/>。
+        /// 最终暴击倍率 = 1 + 返回值/100。
+        /// </summary>
+        public static decimal ResolveCriticalDamageBonusPercent(decimal baseBonus, decimal equipmentBonus)
+        {
+            decimal sum = baseBonus + equipmentBonus;
+            return sum > 0 ? sum : DefaultCriticalDamageBonusPercent;
+        }
+
+        /// <summary>
+        /// 单次攻击基础伤害（暴击、波动前）。采用 attack²/(attack+defense)，使攻击略低于防御时仍能造成可观伤害，避免长期只有 1 点保底。
+        /// </summary>
+        public static int CalculateBaseDamageBeforeCritical(int attack, int defend)
+        {
+            long a = Math.Max(0, attack);
+            long d = Math.Max(0, defend);
+            if (a <= 0) return 1;
+            double raw = (double)a * a / (a + d);
+            int damage = (int)Math.Floor(raw);
+            return Math.Max(1, damage);
+        }
+
         public static decimal CalculateBaseMaxHP(int levelId, decimal expForLog, Profession? profession)
         {
             decimal healthRate = profession?.HealthRate ?? 1m;

Build_God_Api/Build_God_Api/Services/Game/MonsterAttributeCalculateService.cs

@@ -22,6 +22,12 @@ namespace Build_God_Api.Services.Game
         public decimal CriticalRate { get; set; }
         public decimal BaseCriticalRate { get; set; }
         public decimal BonusCriticalRate { get; set; }
+
+        /// <summary>基础暴击伤害加成百分比（当前怪物恒为 0）</summary>
+        public decimal BaseCriticalDamage { get; set; }
+
+        /// <summary>装备提供的暴击伤害加成百分比</summary>
+        public decimal BonusCriticalDamage { get; set; }
     }
 
     public class MonsterAttributeCalculateService(ISqlSugarClient db) : IMonsterAttributeCalculateService
@@ -52,6 +58,8 @@ namespace Build_God_Api.Services.Game
                 BonusAttack = bonus.AttackBonus,
                 BonusDefend = bonus.DefendBonus,
                 BonusCriticalRate = bonus.CriticalBonus,
+                BaseCriticalDamage = 0,
+                BonusCriticalDamage = bonus.CriticalDamageBonus,
                 MaxHP = baseMaxHp + bonus.HPBonus,
                 Attack = baseAttack + bonus.AttackBonus,
                 Defend = baseDefend + bonus.DefendBonus,

Build_God_Api/Build_God_Api/Services/MonsterService.cs

@@ -77,6 +77,8 @@ namespace Build_God_Api.Services
                 Attack = (int)stats.Attack,
                 Defense = (int)stats.Defend,
                 CriticalRate = stats.CriticalRate,
+                BaseCriticalDamage = stats.BaseCriticalDamage,
+                BonusCriticalDamage = stats.BonusCriticalDamage,
                 Rewards = rewards,
                 Equipment = equipDtos
             };

Build_God_Game/src/api/character.ts

@@ -17,6 +17,9 @@ export interface CharacterDto {
   criticalRate: number
   baseCriticalRate: number
   bonusCriticalRate: number
+  /** 暴击伤害加成百分比（装备等）；缺省时前端按 0 参与累加，战斗再套用默认 50 */
+  baseCriticalDamage?: number
+  bonusCriticalDamage?: number
   professionName?: string
   money: number
   currentExp: number

Build_God_Game/src/api/monster.ts

@@ -22,6 +22,8 @@ export interface MonsterDto {
   attack: number
   defense: number
   criticalRate: number
+  baseCriticalDamage?: number
+  bonusCriticalDamage?: number
   rewards?: MonsterRewardDto[]
   equipment?: MonsterEquipmentClientDto[]
 }

Build_God_Game/src/views/BattleView.vue

@@ -54,13 +54,32 @@ const getMonsterIcon = (iconName?: string) => {
   return `/src/assets/images/monster/${iconName}`
 }
 
-const calculateDamage = (attack: number, defend: number, criticalRate: number): { damage: number; isCritical: boolean } => {
-  const baseDamage = Math.max(1, attack - defend)
+const defaultCriticalDamageBonusPercent = 50
+
+const resolveCriticalDamageBonusPercent = (baseBonus: number, equipmentBonus: number) => {
+  const sum = (baseBonus || 0) + (equipmentBonus || 0)
+  return sum > 0 ? sum : defaultCriticalDamageBonusPercent
+}
+
+/** 与后端 CombatAttributeFormula / BattleService 一致：基础伤害 attack²/(attack+defend)，暴击倍率 1+暴击伤害%/100 */
+const calculateDamage = (
+  attack: number,
+  defend: number,
+  criticalRate: number,
+  criticalDamageBonusPercent: number
+): { damage: number; isCritical: boolean } => {
+  const a = Math.max(0, attack)
+  const d = Math.max(0, defend)
+  const baseDamage = a <= 0 ? 1 : Math.max(1, Math.floor((a * a) / (a + d)))
   const random = Math.random()
   const isCritical = random < criticalRate / 100
-  const damage = isCritical ? Math.floor(baseDamage * 1.5) : baseDamage
+  const critMult = 1 + criticalDamageBonusPercent / 100
+  let working = baseDamage
+  if (isCritical) {
+    working = Math.floor(working * critMult)
+  }
   const variance = (90 + Math.floor(Math.random() * 21)) / 100
-  return { damage: Math.floor(damage * variance), isCritical }
+  return { damage: Math.max(1, Math.floor(working * variance)), isCritical }
 }
 
 const startBattle = async () => {
@@ -82,8 +101,16 @@ const startBattle = async () => {
   const playerAttack = currentCharacter.value.attack
   const playerDefend = currentCharacter.value.defend
   const playerCriticalRate = currentCharacter.value.criticalRate
+  const playerCritDamagePct = resolveCriticalDamageBonusPercent(
+    currentCharacter.value.baseCriticalDamage,
+    currentCharacter.value.bonusCriticalDamage
+  )
   const monsterAttack = currentMonster.value.attack
   const monsterDefend = currentMonster.value.defense
+  const monsterCritDamagePct = resolveCriticalDamageBonusPercent(
+    currentMonster.value.baseCriticalDamage ?? 0,
+    currentMonster.value.bonusCriticalDamage ?? 0
+  )
 
   let round = 0
   const maxRounds = 100
@@ -94,7 +121,7 @@ const startBattle = async () => {
     round++
 
     // 玩家攻击
-    const playerResult = calculateDamage(playerAttack, monsterDefend, playerCriticalRate)
+    const playerResult = calculateDamage(playerAttack, monsterDefend, playerCriticalRate, playerCritDamagePct)
     monsterHealth.value = Math.max(0, monsterHealth.value - playerResult.damage)
     battleLog.value.push({
       round,
@@ -109,7 +136,7 @@ const startBattle = async () => {
     }
 
     // 怪物攻击
-    const monsterResult = calculateDamage(monsterAttack, playerDefend, currentMonster.value.criticalRate)
+    const monsterResult = calculateDamage(monsterAttack, playerDefend, currentMonster.value.criticalRate, monsterCritDamagePct)
     playerHealth.value = Math.max(0, playerHealth.value - monsterResult.damage)
     battleLog.value.push({
       round,