67 lines
1.8 KiB
C#
67 lines
1.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using ColdMint.scripts.utils;
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namespace ColdMint.scripts.loot;
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/// <summary>
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/// <para>Loot entry</para>
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/// <para>战利品条目</para>
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/// </summary>
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public readonly struct LootEntry(string itemId,int minQuantity=1,int maxQuantity = 1,int weight = 1)
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{
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/// <summary>
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/// <para>ID of item</para>
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/// <para>物品ID</para>
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/// </summary>
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public string ItemId { get; init; } = itemId;
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/// <summary>
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/// <para>Minimum number of generated</para>
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/// <para>最小生成多少个</para>
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/// </summary>
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public int MinQuantity { get; init; } = minQuantity;
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/// <summary>
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/// <para>The maximum number of files to be generated</para>
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/// <para>最多生成多少个</para>
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/// </summary>
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public int MaxQuantity { get; init; } = maxQuantity;
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/// <summary>
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/// <para>Weight of probability within the drop group</para>
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/// <para>在掉落组内的生成权重</para>
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/// </summary>
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public int Weight { get; init; } = weight;
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}
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/// <summary>
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/// <para>Loot Group</para>
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/// <para>战利品分组</para>
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/// </summary>
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/// <param name="Chance"></param>
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/// <param name="Entries"></param>
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public readonly record struct LootGroup(double Chance, IEnumerable<LootEntry> Entries)
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{
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private int WeightSum { get; } = Entries.Sum(entry => entry.Weight);
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public LootDatum GenerateLootData()
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{
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var random = RandomUtils.Instance;
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var w = random.Next(WeightSum);
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LootEntry entry = default;
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foreach (var e in Entries)
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{
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w -= e.Weight;
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if (w >= 0) continue;
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entry = e;
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break;
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}
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var quantity = random.Next(entry.MinQuantity, entry.MaxQuantity + 1);
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return new(entry.ItemId, quantity);
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}
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} |