65 lines
1.8 KiB
C#
65 lines
1.8 KiB
C#
using System.Collections.Generic;
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using KernelPanic.Data;
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using System;
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namespace KernelPanic.Meta
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{
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/// <summary>
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/// Tracks player-owned persistent unlocks for menu presentation and collection views.
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/// </summary>
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public sealed class PlayerCollection
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{
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private readonly List<DistroDefinition> ownedUnits = new();
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private int featuredIndex;
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// TODO: Populate owned units from SaveService during bootstrap.
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public IReadOnlyList<DistroDefinition> OwnedUnits => ownedUnits;
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public DistroDefinition FeaturedUnit => ownedUnits.Count == 0 ? null : ownedUnits[Math.Clamp(featuredIndex, 0, ownedUnits.Count - 1)];
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public event Action Changed;
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public void Add(DistroDefinition unit)
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{
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if (unit == null)
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{
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return;
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}
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// Persistence is wired by the owner so this domain class stays IO-free.
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ownedUnits.Add(unit);
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featuredIndex = Math.Clamp(featuredIndex, 0, ownedUnits.Count - 1);
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Changed?.Invoke();
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}
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public int GetOwnedCount(string unitId)
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{
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if (string.IsNullOrWhiteSpace(unitId))
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{
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return 0;
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}
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int count = 0;
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for (int i = 0; i < ownedUnits.Count; i++)
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{
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DistroDefinition unit = ownedUnits[i];
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if (unit != null && string.Equals(unit.Id, unitId, StringComparison.OrdinalIgnoreCase))
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{
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count++;
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}
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}
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return count;
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}
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public void SelectNextFeatured()
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{
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if (ownedUnits.Count < 2)
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{
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return;
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}
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featuredIndex = (featuredIndex + 1) % ownedUnits.Count;
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}
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}
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}
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