UIBestiaryEntryGrid.cs

Go to the documentation of this file.

using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Terraria.GameContent.Bestiary;
using Terraria.UI;
 
namespace Terraria.GameContent.UI.Elements;
 
public class UIBestiaryEntryGrid : UIElement
{
    private List<BestiaryEntry> _workingSetEntries;
 
    private MouseEvent _clickOnEntryEvent;
 
    private int _atEntryIndex;
 
    private int _lastEntry;
 
    public event Action OnGridContentsChanged;
 
    public UIBestiaryEntryGrid(List<BestiaryEntry> workingSet, MouseEvent clickOnEntryEvent)
    {
        Width = new StyleDimension(0f, 1f);
        Height = new StyleDimension(0f, 1f);
        _workingSetEntries = workingSet;
        _clickOnEntryEvent = clickOnEntryEvent;
        SetPadding(0f);
        UpdateEntries();
        FillBestiarySpaceWithEntries();
    }
 
    public void UpdateEntries()
    {
        _lastEntry = _workingSetEntries.Count;
    }
 
    public void FillBestiarySpaceWithEntries()
    {
        RemoveAllChildren();
        UpdateEntries();
        GetEntriesToShow(out var maxEntriesWidth, out var maxEntriesHeight, out var maxEntriesToHave);
        FixBestiaryRange(0, maxEntriesToHave);
        int atEntryIndex = _atEntryIndex;
        int num = Math.Min(_lastEntry, atEntryIndex + maxEntriesToHave);
        List<BestiaryEntry> list = new List<BestiaryEntry>();
        for (int i = atEntryIndex; i < num; i++)
        {
            list.Add(_workingSetEntries[i]);
        }
        int num2 = 0;
        float num3 = 0.5f / (float)maxEntriesWidth;
        float num4 = 0.5f / (float)maxEntriesHeight;
        for (int j = 0; j < maxEntriesHeight; j++)
        {
            for (int k = 0; k < maxEntriesWidth; k++)
            {
                if (num2 >= list.Count)
                {
                    break;
                }
                UIElement uIElement = new UIBestiaryEntryButton(list[num2], isAPrettyPortrait: false);
                num2++;
                uIElement.OnLeftClick += _clickOnEntryEvent;
                uIElement.VAlign = (uIElement.HAlign = 0.5f);
                uIElement.Left.Set(0f, (float)k / (float)maxEntriesWidth - 0.5f + num3);
                uIElement.Top.Set(0f, (float)j / (float)maxEntriesHeight - 0.5f + num4);
                uIElement.SetSnapPoint("Entries", num2, new Vector2(0.2f, 0.7f));
                Append(uIElement);
            }
        }
    }
 
    public override void Recalculate()
    {
        base.Recalculate();
        FillBestiarySpaceWithEntries();
    }
 
    public void GetEntriesToShow(out int maxEntriesWidth, out int maxEntriesHeight, out int maxEntriesToHave)
    {
        Rectangle rectangle = GetDimensions().ToRectangle();
        maxEntriesWidth = rectangle.Width / 72;
        maxEntriesHeight = rectangle.Height / 72;
        int num = 0;
        maxEntriesToHave = maxEntriesWidth * maxEntriesHeight - num;
    }
 
    public string GetRangeText()
    {
        GetEntriesToShow(out var _, out var _, out var maxEntriesToHave);
        int atEntryIndex = _atEntryIndex;
        int num = Math.Min(_lastEntry, atEntryIndex + maxEntriesToHave);
        int num2 = Math.Min(atEntryIndex + 1, num);
        return $"{num2}-{num} ({_lastEntry})";
    }
 
    public void MakeButtonGoByOffset(UIElement element, int howManyPages)
    {
        element.OnLeftClick += delegate
        {
            OffsetLibraryByPages(howManyPages);
        };
    }
 
    public void OffsetLibraryByPages(int howManyPages)
    {
        GetEntriesToShow(out var _, out var _, out var maxEntriesToHave);
        OffsetLibrary(howManyPages * maxEntriesToHave);
    }
 
    public void OffsetLibrary(int offset)
    {
        GetEntriesToShow(out var _, out var _, out var maxEntriesToHave);
        FixBestiaryRange(offset, maxEntriesToHave);
        FillBestiarySpaceWithEntries();
    }
 
    private void FixBestiaryRange(int offset, int maxEntriesToHave)
    {
        _atEntryIndex = Utils.Clamp(_atEntryIndex + offset, 0, Math.Max(0, _lastEntry - maxEntriesToHave));
        if (this.OnGridContentsChanged != null)
        {
            this.OnGridContentsChanged();
        }
    }
}