73 lines
2.7 KiB
C#
73 lines
2.7 KiB
C#
using UnityEngine;
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using BaseGames.Core;
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using BaseGames.Core.Events;
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using BaseGames.World;
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namespace BaseGames.Enemies
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{
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/// <summary>
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/// 战利品解算器（静态工具类）。
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/// 根据 <see cref="LootTableSO"/> 和当前难度决定掉落内容。
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/// </summary>
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public static class LootResolver
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{
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/// <summary>
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/// 解算并执行战利品掉落。
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/// <para>保底 LingZhu：直接加入玩家（通过事件频道）或在 <paramref name="worldPosition"/> 生成拾取物。</para>
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/// <para>随机物品：加权随机后通过 CollectibleSpawner 实例化拾取物。</para>
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/// </summary>
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public static void Resolve(LootTableSO table, Vector2 worldPosition)
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{
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if (table == null) return;
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// 保底 LingZhu
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int guaranteedLingZhu = Random.Range(table.GuaranteedLingZhuMin, table.GuaranteedLingZhuMax + 1);
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ApplyDifficultyLingZhuScale(ref guaranteedLingZhu);
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if (guaranteedLingZhu > 0)
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CollectibleSpawner.SpawnLingZhu(worldPosition, guaranteedLingZhu);
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// 加权随机物品掉落
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if (table.Entries == null || table.Entries.Length == 0) return;
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var dm = ServiceLocator.GetOrDefault<IDifficultyService>();
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bool isHard = dm != null &&
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(int)dm.CurrentLevel >= (int)DifficultyLevel.Hard;
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float totalWeight = 0f;
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foreach (var entry in table.Entries)
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{
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float w = entry.BaseWeight;
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if (isHard && entry.ScaleWithDifficulty) w *= 1.5f;
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totalWeight += w;
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}
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if (totalWeight <= 0f) return;
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float roll = Random.Range(0f, totalWeight);
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float accum = 0f;
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foreach (var entry in table.Entries)
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{
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float w = entry.BaseWeight;
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if (isHard && entry.ScaleWithDifficulty) w *= 1.5f;
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accum += w;
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if (roll <= accum)
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{
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if (!string.IsNullOrEmpty(entry.ItemId))
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CollectibleSpawner.SpawnItem(worldPosition, entry.ItemId);
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else if (entry.LingZhuAmount > 0)
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CollectibleSpawner.SpawnLingZhu(worldPosition, entry.LingZhuAmount);
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return;
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}
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}
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}
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private static void ApplyDifficultyLingZhuScale(ref int lingZhu)
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{
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var dm = ServiceLocator.GetOrDefault<IDifficultyService>();
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if (dm?.CurrentScaler == null) return;
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float mult = dm.CurrentScaler.LingZhuDropMultiplier;
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lingZhu = Mathf.RoundToInt(lingZhu * mult);
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}
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}
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}
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