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

using Base;
using Data;
using Managers;
using Prefab;
using UnityEngine;
using Utils;

namespace Entity
{
    public class Bullet : Entity
    {
        public float lifeTime = 10;

        private BulletDef bulletDef;
        public Entity bulletSource { get; private set; }

        private void OnTriggerEnter2D(Collider2D other)
        {
            var entity = other.GetComponent<EntityPrefab>()?.entity;
            if (!entity)
            {
                Kill();
                return;
            }

            if (IsDead || entity == bulletSource || entity is not CombatantEntity) return;
            
            if (AffiliationManager.Instance.GetRelation(bulletSource.affiliation, entity.affiliation) !=
                Relation.Friendly || Setting.Instance.CurrentSettings.friendlyFire)
            {
                entity.OnHit(bulletSource);
                bulletSource.OnDealHit(entity);
                if (bulletDef?.hitHediffs != null && entity is LivingEntity livingEntity)
                    foreach (var hediff in bulletDef.hitHediffs)
                        livingEntity.AddHediff(new Hediff(hediff));
            }
            else
            {
                return; // 如果是友好关系且不允许友军伤害，则不处理
            }

            OnHit(1, false);
        }

        public override void Init(EntityDef entityDefine)
        {
            base.Init(entityDefine);
            bulletDef = entityDefine as BulletDef;
        }


        public void SetBulletSource(Entity source)
        {
            bulletSource = source;
            AttributesNow.attack = source.AttributesNow.attack;
            var weapon = source.GetCurrentWeapon();
            if (weapon != null) lifeTime = weapon.Attributes.attackRange / AttributesNow.moveSpeed;

            affiliation = source.affiliation;
        }

        public override bool SetTarget(Vector3 pos)
        {
            base.SetTarget(pos);
            RotateTool.RotateTransformToDirection(transform, Direction);
            return true;
        }

        protected override void AutoBehave()
        {
            Move();
            lifeTime -= Time.deltaTime;
            if (lifeTime <= 0) Kill();
        }
    }
}