MoonLordProgressBar.cs

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using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Terraria.ID;
 
namespace Terraria.GameContent.UI.BigProgressBar;
 
public class MoonLordProgressBar : IBigProgressBar
{
    private BigProgressBarCache _cache;
 
    private NPC _referenceDummy;
 
    private HashSet<int> ValidIds = new HashSet<int> { 396, 397, 398 };
 
    public MoonLordProgressBar()
    {
        _referenceDummy = new NPC();
    }
 
    public bool ValidateAndCollectNecessaryInfo(ref BigProgressBarInfo info)
    {
        if (info.npcIndexToAimAt < 0 || info.npcIndexToAimAt > 200)
        {
            return false;
        }
        NPC nPC = Main.npc[info.npcIndexToAimAt];
        if ((!nPC.active || IsInBadAI(nPC)) && !TryFindingAnotherMoonLordPiece(ref info))
        {
            return false;
        }
        int num = 0;
        NPCSpawnParams nPCSpawnParams = default(NPCSpawnParams);
        nPCSpawnParams.strengthMultiplierOverride = nPC.strengthMultiplier;
        nPCSpawnParams.playerCountForMultiplayerDifficultyOverride = nPC.statsAreScaledForThisManyPlayers;
        NPCSpawnParams spawnparams = nPCSpawnParams;
        _referenceDummy.SetDefaults(398, spawnparams);
        num += _referenceDummy.lifeMax;
        _referenceDummy.SetDefaults(396, spawnparams);
        num += _referenceDummy.lifeMax;
        _referenceDummy.SetDefaults(397, spawnparams);
        num += _referenceDummy.lifeMax;
        num += _referenceDummy.lifeMax;
        float num2 = 0f;
        for (int i = 0; i < 200; i++)
        {
            NPC nPC2 = Main.npc[i];
            if (nPC2.active && ValidIds.Contains(nPC2.type) && !IsInBadAI(nPC2))
            {
                num2 += (float)nPC2.life;
            }
        }
        _cache.SetLife(num2, num);
        return true;
    }
 
    private bool IsInBadAI(NPC npc)
    {
        if (npc.type == 398 && (npc.ai[0] == 2f || npc.ai[0] == -1f))
        {
            return true;
        }
        if (npc.type == 398 && npc.localAI[3] == 0f)
        {
            return true;
        }
        if (npc.ai[0] == -2f || npc.ai[0] == -3f)
        {
            return true;
        }
        return false;
    }
 
    public void Draw(ref BigProgressBarInfo info, SpriteBatch spriteBatch)
    {
        int num = NPCID.Sets.BossHeadTextures[396];
        Texture2D value = TextureAssets.NpcHeadBoss[num].Value;
        Rectangle barIconFrame = value.Frame();
        BigProgressBarHelper.DrawFancyBar(spriteBatch, _cache.LifeCurrent, _cache.LifeMax, value, barIconFrame);
    }
 
    private bool TryFindingAnotherMoonLordPiece(ref BigProgressBarInfo info)
    {
        for (int i = 0; i < 200; i++)
        {
            NPC nPC = Main.npc[i];
            if (nPC.active && ValidIds.Contains(nPC.type) && !IsInBadAI(nPC))
            {
                info.npcIndexToAimAt = i;
                return true;
            }
        }
        return false;
    }
}