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## EnemyManager — 敌人管理器 Autoload（GDScript 接口层）
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## 热路径由 C# EnemyManagerCs 子节点驱动。
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## 权威来源：implementation_plan.md §2.3.C
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##
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## SoA 布局（ENEMY_STRIDE=8）：
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## [ x, y, vx, vy, hp, hp_max, enemy_type, state ]
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## 0 1 2 3 4 5 6 7
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extends Node
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const ENEMY_STRIDE: int = 8 # 禁止裸整数 8（P6-N54）
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const MAX_ENEMIES: int = 1024
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const OFFSCREEN_SEPARATION_INTERVAL: int = 10 # 屏外低频 Boid 分离力更新频率（P6-N1）
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# SoA 热数组
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var _data: PackedFloat32Array = PackedFloat32Array()
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var _active_count: int = 0
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# entity_id ↔ SoA 槽位 双向映射
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var _entity_index_map: Dictionary = {} # { entity_id → slot_idx }
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var _slot_entity_map: Dictionary = {} # { slot_idx → entity_id }
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var _next_entity_id: int = 1
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# LOD：屏内可见标志（PackedByteArray）0=屏外，1=屏内
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var _visible_flags: PackedByteArray = PackedByteArray()
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var _offscreen_sep_counter: int = 0
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var _cs_node: Node = null
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## ADR-A4：精英寻路。W1–14 杂鱼永远 Boid；W15+ Elite/Boss 按需挂 NavigationAgent2D，
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## 并发寻路上限 MAX_PATHFINDING_ENEMIES=20，超出降级 Boid（P-S5-AI-01）。
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const MAX_PATHFINDING_ENEMIES: int = 20
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const ELITE_SPEED: float = 90.0
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## 敌人原型（enemy_type 存于 SoA[+6]）。S6 内容：基础/快速/护甲/精英/Boss
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enum Type { BASIC = 0, FAST = 1, ARMORED = 2, ELITE = 3, MINIBOSS = 4, BOSS = 5 }
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## 各原型数值：纯数据驱动，唯一来源 data/enemies.json（游戏设计器「敌人」面板维护）
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## get() 的单值默认仅为防崩溃，非内容副本
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var _SPEED: Dictionary = {} # type → 移动速度
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var _ARMOR: Dictionary = {} # type → 护甲
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var _RENDER_SIZE: Dictionary = {} # type → 渲染直径
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var _RENDER_COLOR: Dictionary = {} # type → 渲染颜色
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const ARCHETYPE_JSON: String = "res://data/enemies.json"
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## 数据驱动：从 data/enemies.json 加载原型数值（速度/护甲/尺寸/颜色）
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func _load_json_archetypes() -> void:
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if not FileAccess.file_exists(ARCHETYPE_JSON):
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push_error("EnemyManager: 缺失 res://data/enemies.json（敌人原型数值）")
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return
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var data = JSON.parse_string(FileAccess.get_file_as_string(ARCHETYPE_JSON))
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if not (data is Dictionary):
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push_error("EnemyManager: enemies.json 格式错误")
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return
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for k in data:
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var t: int = int(k)
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var d: Dictionary = data[k]
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_SPEED[t] = float(d.get("speed", 80.0))
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_ARMOR[t] = float(d.get("armor", 0.0))
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_RENDER_SIZE[t] = float(d.get("size", 14.0))
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var c: Array = d.get("color", [0.9, 0.3, 0.3])
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_RENDER_COLOR[t] = Color(float(c[0]), float(c[1]), float(c[2]))
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var _nav_region: NavigationRegion2D = null # 程序化矩形导航区
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var _pathfinders: Dictionary = {} # entity_id → {"agent":NavigationAgent2D, "host":Node2D}
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var _pathfinder_order: Array = [] # FIFO，用于超上限淘汰
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func _ready() -> void:
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_load_json_archetypes() # 数据驱动：覆盖原型数值（游戏设计器面板维护）
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_data.resize(MAX_ENEMIES * ENEMY_STRIDE)
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_data.fill(0.0)
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_visible_flags.resize(MAX_ENEMIES)
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_visible_flags.fill(0)
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func _physics_process(delta: float) -> void:
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_offscreen_sep_counter += 1
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var do_sep: bool = (_offscreen_sep_counter >= OFFSCREEN_SEPARATION_INTERVAL)
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if do_sep:
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_offscreen_sep_counter = 0
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if not _cs_node:
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_gd_update_movement(delta)
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# ADR-A4：精英寻路移动（NavigationAgent2D 跟随），仅当存在 pathfinder 时执行
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if not _pathfinders.is_empty():
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_update_pathfinding_movement(delta)
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# S1: 移动后更新 SpatialGrid（碰撞检测依赖）
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_update_spatial_grid()
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func _update_spatial_grid() -> void:
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for i in _active_count:
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var base: int = i * ENEMY_STRIDE
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var eid: int = _slot_entity_map.get(i, -1)
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if eid >= 0:
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SpatialGrid.insert(eid, Vector2(_data[base + 0], _data[base + 1]))
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# GDScript 回退：直线追玩家（C# 没就绪时使用）
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func _gd_update_movement(delta: float) -> void:
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var player_pos: Vector2 = PlayerManager.get_position()
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var has_pf: bool = not _pathfinders.is_empty() # 无精英时零额外开销
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for i in _active_count:
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if has_pf and _pathfinders.has(_slot_entity_map.get(i, -1)):
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continue # 寻路精英由 _update_pathfinding_movement 处理
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var base: int = i * ENEMY_STRIDE
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var ex: float = _data[base + 0]
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var ey: float = _data[base + 1]
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var spd: float = _SPEED.get(int(_data[base + 6]), 80.0) # 按原型查速度
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var dx: float = player_pos.x - ex
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var dy: float = player_pos.y - ey
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var dist: float = sqrt(dx * dx + dy * dy)
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if dist > 1.0:
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_data[base + 2] = (dx / dist) * spd
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_data[base + 3] = (dy / dist) * spd
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_data[base + 0] += _data[base + 2] * delta
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_data[base + 1] += _data[base + 3] * delta
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# ── 对外接口 ───────────────────────────────────────────────────
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func spawn_enemy(pos: Vector2, hp: float, enemy_type: int = 0, has_pathfinding: bool = false) -> int:
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if _active_count >= MAX_ENEMIES:
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return -1
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var entity_id: int = _next_entity_id
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_next_entity_id += 1
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var slot: int = _active_count
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var base: int = slot * ENEMY_STRIDE
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_data[base + 0] = pos.x
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_data[base + 1] = pos.y
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_data[base + 2] = 0.0
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_data[base + 3] = 0.0
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_data[base + 4] = hp # hp
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_data[base + 5] = hp # hp_max
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_data[base + 6] = float(enemy_type)
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_data[base + 7] = 0.0 # state: 0=alive
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_entity_index_map[entity_id] = slot
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_slot_entity_map[slot] = entity_id
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_active_count += 1
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# ADR-A4：W15+ Elite 在并发上限内挂寻路（超限降级 Boid）
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if has_pathfinding and _pathfinders.size() < MAX_PATHFINDING_ENEMIES:
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_register_pathfinder(entity_id, pos)
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return entity_id
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# ── ADR-A4 精英寻路子系统 ──────────────────────────────────────
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func _ensure_nav_region() -> void:
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if _nav_region != null:
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return
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_nav_region = NavigationRegion2D.new()
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var poly := NavigationPolygon.new()
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# 覆盖竞技场的单个凸矩形导航多边形（无障碍占位；P-S5-AI-01 仅测寻路开销）
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var ext: float = 4000.0
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poly.vertices = PackedVector2Array([
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Vector2(-ext, -ext), Vector2(-ext, ext), Vector2(ext, ext), Vector2(ext, -ext),
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])
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poly.add_polygon(PackedInt32Array([0, 1, 2, 3]))
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_nav_region.navigation_polygon = poly
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add_child(_nav_region)
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func _register_pathfinder(entity_id: int, pos: Vector2) -> void:
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_ensure_nav_region()
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var host := Node2D.new()
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host.position = pos
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add_child(host)
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var agent := NavigationAgent2D.new()
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agent.path_desired_distance = 8.0
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agent.target_desired_distance = 8.0
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agent.avoidance_enabled = false # 与 SoA Boid 分离力共存，避免双重避障
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host.add_child(agent)
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_pathfinders[entity_id] = {"agent": agent, "host": host}
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_pathfinder_order.append(entity_id)
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func _unregister_pathfinder(entity_id: int) -> void:
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var pf: Dictionary = _pathfinders.get(entity_id, {})
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if pf.is_empty():
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return
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(pf["host"] as Node).queue_free() # agent 是 host 子节点，随之释放
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_pathfinders.erase(entity_id)
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_pathfinder_order.erase(entity_id)
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## 寻路精英移动：host 同步到 SoA 坐标，agent 朝玩家求下一路径点并转向
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func _update_pathfinding_movement(delta: float) -> void:
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var player_pos: Vector2 = PlayerManager.get_position()
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for eid in _pathfinders:
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var slot: int = _entity_index_map.get(eid, -1)
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if slot < 0:
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continue
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var base: int = slot * ENEMY_STRIDE
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var pos: Vector2 = Vector2(_data[base + 0], _data[base + 1])
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var pf: Dictionary = _pathfinders[eid]
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var agent: NavigationAgent2D = pf["agent"]
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(pf["host"] as Node2D).global_position = pos
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agent.target_position = player_pos
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var nxt: Vector2 = agent.get_next_path_position()
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var dir: Vector2 = nxt - pos
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if dir.length() > 1.0:
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dir = dir.normalized()
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_data[base + 2] = dir.x * ELITE_SPEED
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_data[base + 3] = dir.y * ELITE_SPEED
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_data[base + 0] += _data[base + 2] * delta
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_data[base + 1] += _data[base + 3] * delta
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func get_pathfinder_count() -> int:
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return _pathfinders.size()
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func despawn_enemy(entity_id: int) -> void:
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var slot: int = _entity_index_map.get(entity_id, -1)
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if slot < 0:
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return
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StatusManager.remove_all_for_entity(entity_id)
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SpatialGrid.remove_entity(entity_id)
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if _pathfinders.has(entity_id):
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_unregister_pathfinder(entity_id)
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var last: int = _active_count - 1
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if slot != last:
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var base_slot: int = slot * ENEMY_STRIDE
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var base_last: int = last * ENEMY_STRIDE
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for s in ENEMY_STRIDE:
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_data[base_slot + s] = _data[base_last + s]
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var moved_id: int = _slot_entity_map[last]
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_entity_index_map[moved_id] = slot
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_slot_entity_map[slot] = moved_id
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_entity_index_map.erase(entity_id)
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_slot_entity_map.erase(last)
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_active_count -= 1
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## 获取指定 entity_id 的世界坐标（找不到返回 Vector2(-9999,-9999)）
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func get_pos_by_id(entity_id: int) -> Vector2:
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var slot: int = _entity_index_map.get(entity_id, -1)
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if slot < 0:
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return Vector2(-9999.0, -9999.0)
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var base: int = slot * ENEMY_STRIDE
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return Vector2(_data[base + 0], _data[base + 1])
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## S1 完整伤害接口：从 DamageContextPool 取 context，计算公式后扣 HP
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## 公式（S1 简化）：final_dmg = base_damage * mult
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## S4 起补充 resistance / armor（参见 combat_mechanics_depth.md §4）
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func apply_damage_from_context(entity_id: int, ctx_id: int) -> bool:
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var ctx: DamageContext = DamageContextPool.get_context(ctx_id)
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if ctx == null:
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return false
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var final_dmg: float = ctx.calc_damage()
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return apply_damage(entity_id, final_dmg, ctx.owner_id, true)
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## 直接扣血接口；source_id 用于击杀归属，record_dps 控制是否计入 DPS
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func apply_damage(entity_id: int, damage: float, source_id: int = -1, record_dps: bool = true) -> bool:
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var slot: int = _entity_index_map.get(entity_id, -1)
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if slot < 0:
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return false
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var combo_stacks: int = StatusManager.get_stacks(entity_id, StatusID.COMBO_MARK)
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var combo_bonus: float = 1.0 + float(combo_stacks) * 0.02 # 每层 +2% 伤害
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var base: int = slot * ENEMY_STRIDE
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var armor: float = _ARMOR.get(int(_data[base + 6]), 0.0) # 原型护甲，扣减后保底 1
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var final_dmg: float = maxf(1.0, damage * combo_bonus - armor)
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_data[base + 4] -= final_dmg
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if record_dps:
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DpsTracker.record_damage(final_dmg)
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if _data[base + 4] <= 0.0:
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StatusManager.remove_all_for_entity(entity_id)
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EventBus.emit(EventID.ENEMY_KILLED, {"entity_id": entity_id, "killer_id": source_id})
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despawn_enemy(entity_id)
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return true
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return false
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func has_entity(entity_id: int) -> bool:
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return _entity_index_map.has(entity_id)
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## 返回敌人血量百分比（权威来源：arch §5.2 get_hp_percent）
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func get_hp_percent(entity_id: int) -> float:
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var slot: int = _entity_index_map.get(entity_id, -1)
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if slot < 0:
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return 0.0
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var base: int = slot * ENEMY_STRIDE
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var hp: float = _data[base + 4] # slot +4: hp
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var hp_max: float = _data[base + 5] # slot +5: hp_max
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return hp / max(hp_max, 0.001)
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func get_active_count() -> int:
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return _active_count
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## 渲染：活跃敌人 SoA 位置 → MultiMesh（按原型设尺寸/颜色，Boss 大且醒目）
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func sync_multimesh(mm: MultiMesh) -> void:
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if mm == null:
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return
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var n: int = min(_active_count, mm.instance_count)
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mm.visible_instance_count = n
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for i in n:
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var base: int = i * ENEMY_STRIDE
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var etype: int = int(_data[base + 6])
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var sz: float = _RENDER_SIZE.get(etype, 14.0)
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mm.set_instance_transform_2d(i, Transform2D(
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0.0, Vector2(sz, sz), 0.0,
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Vector2(_data[base + 0], _data[base + 1])))
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mm.set_instance_color(i, _RENDER_COLOR.get(etype, Color(0.9, 0.3, 0.3)))
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## 返回最近敌人位置
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func get_nearest_pos(origin: Vector2, max_dist: float = 9999.0) -> Vector2:
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var best_sq: float = max_dist * max_dist
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var best: Vector2 = origin
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for i in _active_count:
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var base: int = i * ENEMY_STRIDE
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var dx: float = _data[base + 0] - origin.x
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var dy: float = _data[base + 1] - origin.y
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var dsq: float = dx * dx + dy * dy
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if dsq < best_sq:
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best_sq = dsq
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best = Vector2(_data[base + 0], _data[base + 1])
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return best
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## 建立敌人位置快照（BulletManager homing 共用）
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func fill_pos_snapshot(out_arr: PackedVector2Array) -> void:
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out_arr.resize(_active_count)
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for i in _active_count:
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var base: int = i * ENEMY_STRIDE
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out_arr[i] = Vector2(_data[base + 0], _data[base + 1])
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## 同步 Node2D 显示位置（屏内 dirty sync）
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func sync_node_positions(enemy_nodes: Array) -> void:
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for i in min(_active_count, enemy_nodes.size()):
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if _visible_flags[i] == int(1):
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var base: int = i * ENEMY_STRIDE
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enemy_nodes[i].position = Vector2(_data[base + 0], _data[base + 1])
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func reset() -> void:
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_active_count = 0
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_data.fill(0.0)
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_visible_flags.fill(0)
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_entity_index_map.clear()
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_slot_entity_map.clear()
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_next_entity_id = 1
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# ADR-A4：释放所有寻路精英节点
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for eid in _pathfinders.keys():
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(_pathfinders[eid]["host"] as Node).queue_free()
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_pathfinders.clear()
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_pathfinder_order.clear()
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