97 lines
3.6 KiB
C#
97 lines
3.6 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace BaseGames.Combat
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{
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/// <summary>
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/// 攻击判定盒。挂载在武器 Prefab 或技能 HitBox Prefab 的子节点上。
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/// Phase 1 简化：直接挂在 Player Prefab 子节点 [HitBoxGround/Up/Down/Air]。
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/// Collider2D 需设 IsTrigger = true，Layer = PlayerHitBox 或 EnemyHitBox。
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/// </summary>
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[RequireComponent(typeof(Collider2D))]
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public class HitBox : MonoBehaviour
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{
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[SerializeField] private DamageSourceSO _defaultSource;
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[SerializeField] private float _hitCooldown = 0.1f;
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private DamageSourceSO _currentSource;
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private Transform _attackerTransform;
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private bool _isActive;
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/// <summary>命中确认委托（PlayerCombat / EnemyCombat 订阅）。</summary>
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public System.Action<DamageInfo> OnHitConfirmed;
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/// <summary>
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/// 激活 HitBox。source/attacker 均可选，未传则使用 Inspector 默认值。
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/// ⚠️ 不存在 Activate(float duration) 重载。
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/// </summary>
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public void Activate(DamageSourceSO source = null, Transform attacker = null)
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{
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_currentSource = source ?? _defaultSource;
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_attackerTransform = attacker ?? transform;
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_isActive = true;
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}
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public void Deactivate() => _isActive = false;
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private void Awake()
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{
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// 确保 Collider2D 是 Trigger
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var col = GetComponent<Collider2D>();
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if (!col.isTrigger)
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Debug.LogWarning($"[HitBox] {name}: Collider2D.isTrigger 应为 true。", this);
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}
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private void OnDisable()
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{
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_isActive = false;
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_hitCooldownTimers.Clear();
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}
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private void OnTriggerEnter2D(Collider2D other)
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{
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if (!_isActive) return;
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if (_currentSource == null)
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{
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Debug.LogWarning($"[HitBox] {name}: 无 DamageSourceSO，跳过命中。", this);
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return;
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}
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if (!CheckCooldown(other)) return;
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Vector2 knockDir = ((Vector2)other.bounds.center
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- (Vector2)_attackerTransform.position).normalized;
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// ⚡ 零 GC：struct 工厂，就地赋值运行时字段
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var info = DamageInfo.From(_currentSource);
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info.KnockbackDirection = knockDir;
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info.KnockbackForce = _currentSource.KnockbackForce;
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info.SourcePosition = _attackerTransform.position;
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info.SourceLayer = _attackerTransform.gameObject.layer;
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// ① 命中 HurtBox
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var hurtBox = other.GetComponent<HurtBox>();
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if (hurtBox != null)
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{
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hurtBox.ReceiveDamage(info);
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OnHitConfirmed?.Invoke(info);
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return;
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}
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// ② 命中 IBreakable（机关/障碍物）
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other.GetComponent<IBreakable>()?.TryInteract(info);
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}
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// ── 同目标多帧命中冷却 ────────────────────────────────────────────────
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private readonly Dictionary<Collider2D, float> _hitCooldownTimers = new();
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private bool CheckCooldown(Collider2D other)
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{
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float now = Time.time;
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if (_hitCooldownTimers.TryGetValue(other, out float last) && now - last < _hitCooldown)
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return false;
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_hitCooldownTimers[other] = now;
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return true;
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}
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}
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}
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