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

using Base;
using Data;
using Item;
using Prefab;
using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

namespace Entity
{
    public class Pickup : Entity
    {
        public ItemResource itemResource;
        protected override void AutoBehave()
        {
        }

        public override void SetTarget(Vector3 pos)
        {

        }

        public void Init(ItemDef itemDef)
        {
            itemResource = Managers.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>());
                bodyAnimationNode.TryAdd(state, new Dictionary<Orientation, ITick[]>());
            }

            var texture = itemResource.Icon;
            if (texture.Count == 1)
            {
                var imageObj = Instantiate(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(animatorPrefab.gameObject, body.transform);
                animatorObj.transform.localPosition = Vector3.zero;
                bodyNodes[EntityState.Idle][Orientation.Down] = animatorObj;
                var animator = animatorObj.GetComponent<SpriteAnimator>();
                animator.SetSprites(texture.ToArray());
                ITick[] ticks = { animator };

                bodyAnimationNode[EntityState.Idle][Orientation.Down] = ticks;
            }

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

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