ResourceDrawSettings.cs

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using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using ReLogic.Content;
 
namespace Terraria.GameContent.UI.ResourceSets;
 
public struct ResourceDrawSettings
{
    public delegate void TextureGetter(int elementIndex, int firstElementIndex, int lastElementIndex, out Asset<Texture2D> texture, out Vector2 drawOffset, out float drawScale, out Rectangle? sourceRect);
 
    public Vector2 TopLeftAnchor;
 
    public int ElementCount;
 
    public int ElementIndexOffset;
 
    public TextureGetter GetTextureMethod;
 
    public Vector2 OffsetPerDraw;
 
    public Vector2 OffsetPerDrawByTexturePercentile;
 
    public Vector2 OffsetSpriteAnchor;
 
    public Vector2 OffsetSpriteAnchorByTexturePercentile;
 
    public void Draw(SpriteBatch spriteBatch, ref bool isHovered)
    {
        int elementCount = ElementCount;
        Vector2 topLeftAnchor = TopLeftAnchor;
        Point value = Main.MouseScreen.ToPoint();
        for (int i = 0; i < elementCount; i++)
        {
            int elementIndex = i + ElementIndexOffset;
            GetTextureMethod(elementIndex, ElementIndexOffset, ElementIndexOffset + elementCount - 1, out var texture, out var drawOffset, out var drawScale, out var sourceRect);
            Rectangle rectangle = texture.Frame();
            if (sourceRect.HasValue)
            {
                rectangle = sourceRect.Value;
            }
            Vector2 position = topLeftAnchor + drawOffset;
            Vector2 origin = OffsetSpriteAnchor + rectangle.Size() * OffsetSpriteAnchorByTexturePercentile;
            Rectangle rectangle2 = rectangle;
            rectangle2.X += (int)(position.X - origin.X);
            rectangle2.Y += (int)(position.Y - origin.Y);
            if (rectangle2.Contains(value))
            {
                isHovered = true;
            }
            spriteBatch.Draw(texture.Value, position, rectangle, Color.White, 0f, origin, drawScale, SpriteEffects.None, 0f);
            topLeftAnchor += OffsetPerDraw + rectangle.Size() * OffsetPerDrawByTexturePercentile;
        }
    }
}