Gen_Hack-and-Slash-Roguelite/Client/Assets/Scripts/Entity/Pickup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Data;
using Item;
using Managers;
using Prefab;
using UnityEngine;
using Utils;

namespace Entity
{
    public class Pickup : Entity
    {
        public ItemResource itemResource;

        private void OnTriggerEnter2D(Collider2D other)
        {
            var entity = other.GetComponent<Character>();
            if (entity == null) return;
            if (entity.TryPickupItem(itemResource, 1) <= 0) Kill();
        }

        protected override void AutoBehave()
        {
        }

        public override bool SetTarget(Vector3 pos)
        {
            return false;
        }

        public void Init(ItemDef itemDef)
        {
            itemResource = ItemResourceManager.Instance.GetItem(itemDef.defName);
            // 预缓存枚举值（避免每次循环重复调用 Enum.GetValues）
            var states = Enum.GetValues(typeof(EntityState)).Cast<EntityState>().ToArray();
            // 预初始化字典结构（减少内层循环的字典检查）
            foreach (var state in states) bodyNodes.TryAdd(state, new Dictionary<Orientation, GameObject>());

            var texture = itemResource.Icon;
            if (texture.Count == 1)
            {
                var imageObj = Instantiate(AnimationUtils.ImagePrefab.gameObject, body.transform);
                imageObj.transform.localPosition = Vector3.zero;
                bodyNodes[EntityState.Idle][Orientation.Down] = imageObj;
                var image = imageObj.GetComponent<ImagePrefab>();
                image.SetSprite(texture[0]);
            }
            else if (texture.Count > 1)
            {
                var animatorObj = Instantiate(AnimationUtils.AnimatorPrefab.gameObject, body.transform);
                animatorObj.transform.localPosition = Vector3.zero;
                bodyNodes[EntityState.Idle][Orientation.Down] = animatorObj;
                var animator = animatorObj.GetComponent<SpriteAnimator>();
                animator.SetSprites(texture.ToArray());
            }


            SetBodyTexture(EntityState.Idle, Orientation.Down);
        }
    }
}