TwinsBigProgressBar.cs

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using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
 
namespace Terraria.GameContent.UI.BigProgressBar;
 
public class TwinsBigProgressBar : IBigProgressBar
{
    private BigProgressBarCache _cache;
 
    private int _headIndex;
 
    public bool ValidateAndCollectNecessaryInfo(ref BigProgressBarInfo info)
    {
        if (info.npcIndexToAimAt < 0 || info.npcIndexToAimAt > 200)
        {
            return false;
        }
        NPC nPC = Main.npc[info.npcIndexToAimAt];
        if (!nPC.active)
        {
            return false;
        }
        int num = ((nPC.type == 126) ? 125 : 126);
        int num2 = nPC.lifeMax;
        int num3 = nPC.life;
        for (int i = 0; i < 200; i++)
        {
            NPC nPC2 = Main.npc[i];
            if (nPC2.active && nPC2.type == num)
            {
                num2 += nPC2.lifeMax;
                num3 += nPC2.life;
                break;
            }
        }
        _cache.SetLife(num3, num2);
        _headIndex = nPC.GetBossHeadTextureIndex();
        return true;
    }
 
    public void Draw(ref BigProgressBarInfo info, SpriteBatch spriteBatch)
    {
        Texture2D value = TextureAssets.NpcHeadBoss[_headIndex].Value;
        Rectangle barIconFrame = value.Frame();
        BigProgressBarHelper.DrawFancyBar(spriteBatch, _cache.LifeCurrent, _cache.LifeMax, value, barIconFrame);
    }
}