MapOverlayDrawContext.cs

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using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Terraria.DataStructures;
using Terraria.UI;
 
namespace Terraria.Map;
 
public struct MapOverlayDrawContext
{
    public struct DrawResult
    {
        public static readonly DrawResult Culled = new DrawResult(isMouseOver: false);
 
        public readonly bool IsMouseOver;
 
        public DrawResult(bool isMouseOver)
        {
            IsMouseOver = isMouseOver;
        }
    }
 
    private readonly Vector2 _mapPosition;
 
    private readonly Vector2 _mapOffset;
 
    private readonly Rectangle? _clippingRect;
 
    private readonly float _mapScale;
 
    private readonly float _drawScale;
 
    public MapOverlayDrawContext(Vector2 mapPosition, Vector2 mapOffset, Rectangle? clippingRect, float mapScale, float drawScale)
    {
        _mapPosition = mapPosition;
        _mapOffset = mapOffset;
        _clippingRect = clippingRect;
        _mapScale = mapScale;
        _drawScale = drawScale;
    }
 
    public DrawResult Draw(Texture2D texture, Vector2 position, Alignment alignment)
    {
        return Draw(texture, position, new SpriteFrame(1, 1), alignment);
    }
 
    public DrawResult Draw(Texture2D texture, Vector2 position, SpriteFrame frame, Alignment alignment)
    {
        position = (position - _mapPosition) * _mapScale + _mapOffset;
        if (_clippingRect.HasValue && !_clippingRect.Value.Contains(position.ToPoint()))
        {
            return DrawResult.Culled;
        }
        Rectangle sourceRectangle = frame.GetSourceRectangle(texture);
        Vector2 vector = sourceRectangle.Size() * alignment.OffsetMultiplier;
        Main.spriteBatch.Draw(texture, position, sourceRectangle, Color.White, 0f, vector, _drawScale, SpriteEffects.None, 0f);
        position -= vector * _drawScale;
        return new DrawResult(new Rectangle((int)position.X, (int)position.Y, (int)((float)texture.Width * _drawScale), (int)((float)texture.Height * _drawScale)).Contains(Main.MouseScreen.ToPoint()));
    }
 
    public DrawResult Draw(Texture2D texture, Vector2 position, Color color, SpriteFrame frame, float scaleIfNotSelected, float scaleIfSelected, Alignment alignment)
    {
        position = (position - _mapPosition) * _mapScale + _mapOffset;
        if (_clippingRect.HasValue && !_clippingRect.Value.Contains(position.ToPoint()))
        {
            return DrawResult.Culled;
        }
        Rectangle sourceRectangle = frame.GetSourceRectangle(texture);
        Vector2 vector = sourceRectangle.Size() * alignment.OffsetMultiplier;
        Vector2 position2 = position;
        float num = _drawScale * scaleIfNotSelected;
        Vector2 vector2 = position - vector * num;
        bool num2 = new Rectangle((int)vector2.X, (int)vector2.Y, (int)((float)sourceRectangle.Width * num), (int)((float)sourceRectangle.Height * num)).Contains(Main.MouseScreen.ToPoint());
        float scale = num;
        if (num2)
        {
            scale = _drawScale * scaleIfSelected;
        }
        Main.spriteBatch.Draw(texture, position2, sourceRectangle, color, 0f, vector, scale, SpriteEffects.None, 0f);
        return new DrawResult(num2);
    }
}