TravellingMerchantShop.cs

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using System.Collections.Generic;
using System.Linq;
using Terraria.ID;
 
namespace Terraria.ModLoader;
 
public class TravellingMerchantShop : AbstractNPCShop
{
    private new record Entry(Item Item, IEnumerable<Condition> Conditions) : AbstractNPCShop.Entry;
 
    private List<Entry> _entries = new List<Entry>();
 
    public override IEnumerable<AbstractNPCShop.Entry> ActiveEntries => _entries;
 
    public TravellingMerchantShop(int npcType)
        : base(npcType)
    {
    }
 
    public TravellingMerchantShop AddInfoEntry(Item item, params Condition[] conditions)
    {
        _entries.Add(new Entry(item, conditions.ToList()));
        return this;
    }
 
    public TravellingMerchantShop AddInfoEntry(int item, params Condition[] conditions)
    {
        return AddInfoEntry(ContentSamples.ItemsByType[item], conditions);
    }
 
    public override void FillShop(ICollection<Item> items, NPC npc)
    {
        int[] travelShop = Main.travelShop;
        foreach (int itemId in travelShop)
        {
            if (itemId != 0)
            {
                items.Add(new Item(itemId));
            }
        }
    }
 
    public override void FillShop(Item[] items, NPC npc, out bool overflow)
    {
        overflow = false;
        int i = 0;
        int[] travelShop = Main.travelShop;
        foreach (int itemId in travelShop)
        {
            if (itemId != 0)
            {
                items[i++] = new Item(itemId);
            }
        }
    }
}