NPCHeadRenderer.cs

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using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using ReLogic.Content;
using Terraria.GameContent;
 
namespace Terraria.Graphics.Renderers;
 
public class NPCHeadRenderer : INeedRenderTargetContent
{
    private NPCHeadDrawRenderTargetContent[] _contents;
 
    private Asset<Texture2D>[] _matchingArray;
 
    public bool IsReady => false;
 
    public NPCHeadRenderer(Asset<Texture2D>[] matchingArray)
    {
        _matchingArray = matchingArray;
        Reset();
    }
 
    public void Reset()
    {
        _contents = new NPCHeadDrawRenderTargetContent[_matchingArray.Length];
    }
 
    public void DrawWithOutlines(Entity entity, int headId, Vector2 position, Color color, float rotation, float scale, SpriteEffects effects)
    {
        if (_contents[headId] == null)
        {
            _contents[headId] = new NPCHeadDrawRenderTargetContent();
            _contents[headId].SetTexture(_matchingArray[headId].Value);
        }
        NPCHeadDrawRenderTargetContent nPCHeadDrawRenderTargetContent = _contents[headId];
        if (nPCHeadDrawRenderTargetContent.IsReady)
        {
            RenderTarget2D target = nPCHeadDrawRenderTargetContent.GetTarget();
            Main.spriteBatch.Draw(target, position, null, color, rotation, ((Texture2D)target).Size() / 2f, scale, effects, 0f);
        }
        else
        {
            nPCHeadDrawRenderTargetContent.Request();
        }
    }
 
    public void PrepareRenderTarget(GraphicsDevice device, SpriteBatch spriteBatch)
    {
        for (int i = 0; i < _contents.Length; i++)
        {
            if (_contents[i] != null && !_contents[i].IsReady)
            {
                _contents[i].PrepareRenderTarget(device, spriteBatch);
            }
        }
    }
}