79 lines
2.8 KiB
C#
79 lines
2.8 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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using BaseGames.Combat;
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namespace BaseGames.Enemies
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{
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/// <summary>
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/// 飞行敌人基类。
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///
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/// 导航由 <see cref="Navigation.FlyingNavigator"/> 实现（IEnemyNavigator），
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/// AI 行为逻辑由挂载的 Behavior Designer 树驱动。
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/// 本类仅负责：
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/// <list type="bullet">
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/// <item>Rigidbody2D 无重力初始化</item>
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/// <item>接触伤害（OnTriggerStay2D）</item>
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/// <item>StopMovement / MoveInDirection 的 Rigidbody2D 快速移动重写</item>
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/// </list>
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/// </summary>
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public class FlyingEnemy : EnemyBase
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{
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[Header("飞行移动（快速覆盖速度）")]
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[SerializeField] private float _moveSpeed = 3f;
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[Header("接触伤害")]
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[SerializeField] private DamageSourceSO _contactDamageSource;
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[Tooltip("对停留在体接触范围内的同一目标重复造成伤害的间隔（秒）。")]
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[SerializeField] private float _contactInterval = 0.5f;
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private Rigidbody2D _rb;
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// 按目标节流：避免 OnTriggerStay2D 每个物理帧都造成伤害（与 HitBox.Interval 节奏一致）
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private readonly Dictionary<HurtBox, float> _contactTimers = new();
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protected override void Awake()
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{
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base.Awake();
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_rb = GetComponent<Rigidbody2D>();
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if (_rb != null)
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{
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_rb.gravityScale = 0f;
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_rb.constraints = RigidbodyConstraints2D.FreezeRotation;
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}
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}
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public override void StopMovement()
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{
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if (_rb != null) _rb.velocity = Vector2.zero;
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}
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public override void MoveInDirection(float dir)
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{
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if (_rb != null) _rb.velocity = new Vector2(dir * _moveSpeed, 0f);
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}
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private void OnTriggerStay2D(Collider2D other)
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{
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if (_contactDamageSource == null) return;
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if (CurrentState == EnemyStateType.Dead) return;
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if (_rb == null) return;
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var hurtBox = other.GetComponent<HurtBox>();
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if (hurtBox == null) return;
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// 按目标间隔节流：停留接触时每 _contactInterval 秒最多结算一次，
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// 不再每个物理帧都调用 ReceiveDamage（命中是否生效仍由承伤方无敌帧决定）。
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float now = Time.time;
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if (_contactTimers.TryGetValue(hurtBox, out float last) && now - last < _contactInterval) return;
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_contactTimers[hurtBox] = now;
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Vector2 knockDir = ((Vector2)other.bounds.center - _rb.position).normalized;
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var info = DamageInfo.From(
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_contactDamageSource,
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knockDir,
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transform.position,
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gameObject.layer);
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hurtBox.ReceiveDamage(info);
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}
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}
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}
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