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## WaveManager — 波次管理（Autoload: WaveManager）
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## S6 内容：Wave 1~20 完整配置（敌人原型/精英寻路/Mini Boss W8/Final Boss W20）
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## 设计参考：game_design.md §3.3（W1-5 数值 / W6-10 机制 / W11-20 弹幕）、§4.5 Boss
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extends Node
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enum WaveState { IDLE = 0, BATTLE = 1, COMPLETE = 2 }
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var current_wave: int = 0
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var wave_state: int = WaveState.IDLE
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var enemies_alive: int = 0
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var _wave_start_time: float = 0.0
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const ARENA_RADIUS: float = 700.0
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const MAX_WAVE: int = 20
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## Boss 追踪
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var _boss_id: int = -1
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var _boss_max_hp: float = 0.0
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var _boss_phase: int = 0
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var _boss_wave: bool = false
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## 波次配置表：纯数据驱动，唯一来源 data/waves.json（游戏设计器「波次」面板维护）
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## 字段：count, hp, type, elite, gold, xp, boss(-1=无 / 4=MiniBoss / 5=Boss)
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var WAVE_CONFIG: Array = []
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const WAVES_JSON: String = "res://data/waves.json"
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func _ready() -> void:
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EventBus.subscribe(EventID.ENEMY_KILLED, _on_enemy_killed)
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_load_json_waves()
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## 数据驱动：从 data/waves.json 加载波次表
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func _load_json_waves() -> void:
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if not FileAccess.file_exists(WAVES_JSON):
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push_error("WaveManager: 缺失 res://data/waves.json（无波次配置）")
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return
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var data = JSON.parse_string(FileAccess.get_file_as_string(WAVES_JSON))
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if data is Array and not data.is_empty():
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WAVE_CONFIG = data
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else:
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push_error("WaveManager: waves.json 格式错误（应为非空数组）")
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func _physics_process(_delta: float) -> void:
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if _boss_wave and _boss_id >= 0:
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_update_boss_phase()
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## 开始指定波次（由 CombatManager 调用）
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func start_wave(wave_num: int) -> void:
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current_wave = wave_num
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wave_state = WaveState.BATTLE
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_wave_start_time = Time.get_ticks_msec() / 1000.0
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_boss_id = -1
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_boss_phase = 0
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_boss_wave = false
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var cfg: Dictionary = _get_wave_config(wave_num)
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enemies_alive = int(cfg["count"])
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_spawn_wave_enemies(cfg)
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if int(cfg.get("boss", -1)) >= 0:
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_spawn_boss(int(cfg["boss"]), wave_num)
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EventBus.emit(EventID.GAME_STATE_CHANGED, {"from": "SHOP", "to": "BATTLE", "wave": wave_num})
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print("[WaveManager] Wave %d 开始：%d 杂兵 + %d 精英%s" % [
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wave_num, int(cfg["count"]), int(cfg.get("elite", 0)),
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("（Boss！）" if int(cfg.get("boss", -1)) >= 0 else "")])
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func _spawn_wave_enemies(cfg: Dictionary) -> void:
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# 难度乘子：怪物数量（挑战×1.2）、怪物血量（初学者×0.7）
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var count: int = int(round(int(cfg["count"]) * SettingsManager.wave_count_mult()))
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var hp: float = float(cfg["hp"]) * SettingsManager.enemy_hp_mult()
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var etype: int = int(cfg.get("type", 0))
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# enemies_alive 已按 cfg.count 初始化，按难度修正差额
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enemies_alive += count - int(cfg["count"])
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for _i in count:
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EnemyManager.spawn_enemy(_ring_pos(), hp, etype)
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# W15+ 精英：带 NavigationAgent2D 寻路（ADR-A4），更高血量
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var elites: int = int(cfg.get("elite", 0))
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for _e in elites:
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EnemyManager.spawn_enemy(_ring_pos(), hp * 2.5, EnemyManager.Type.ELITE, true)
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enemies_alive += elites # 精英计入存活
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func _spawn_boss(boss_type: int, wave_num: int) -> void:
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# Boss 基础血量由 SettingsManager（balance.json 可调）提供 × 难度乘子
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var hp: float = SettingsManager.get_boss_base_hp(boss_type) * SettingsManager.boss_hp_mult()
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_boss_max_hp = hp
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# Boss 在玩家上方稍远处入场
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_boss_id = EnemyManager.spawn_enemy(Vector2(0.0, -ARENA_RADIUS * 0.8), hp, boss_type)
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_boss_wave = true
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_boss_phase = 1
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enemies_alive += 1
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EventBus.emit(EventID.BOSS_SPAWNED, {
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"boss_id": _boss_id, "boss_type": boss_type, "wave": wave_num, "max_hp": hp})
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print("[WaveManager] Boss 入场！type=%d hp=%.0f (wave %d)" % [boss_type, hp, wave_num])
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## Boss 阶段：HP 跨越阈值时进阶并召唤援军（简化 AI，game_design §4.5）
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func _update_boss_phase() -> void:
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if not EnemyManager.has_entity(_boss_id):
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return
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var frac: float = EnemyManager.get_hp_percent(_boss_id)
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var target_phase: int = 1
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if frac <= 0.33:
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target_phase = 3
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elif frac <= 0.66:
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target_phase = 2
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if target_phase > _boss_phase:
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_boss_phase = target_phase
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_on_boss_phase_enter(target_phase)
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func _on_boss_phase_enter(phase: int) -> void:
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# 进阶召唤一批援军施压（Phase 2/3）
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var add_count: int = 4 + phase * 2
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var boss_pos: Vector2 = EnemyManager.get_pos_by_id(_boss_id)
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for _i in add_count:
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var off := Vector2(randf_range(-120, 120), randf_range(-120, 120))
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var aid: int = EnemyManager.spawn_enemy(boss_pos + off, 40.0, EnemyManager.Type.FAST)
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if aid >= 0:
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enemies_alive += 1
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EventBus.emit(EventID.GAME_STATE_CHANGED, {"from": "BATTLE", "to": "BOSS_PHASE_%d" % phase})
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print("[WaveManager] Boss 进入 Phase %d，召唤 %d 援军" % [phase, add_count])
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func _ring_pos() -> Vector2:
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var angle: float = randf() * TAU
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var radius: float = randf_range(250.0, ARENA_RADIUS)
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return Vector2(cos(angle) * radius, sin(angle) * radius)
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func _on_enemy_killed(payload: Dictionary) -> void:
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if wave_state != WaveState.BATTLE:
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return
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var killed_id: int = int(payload.get("entity_id", -1))
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# Boss 波：Boss 死亡即通关本波（援军为附赠）
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if _boss_wave and killed_id == _boss_id:
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_complete_wave()
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return
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enemies_alive -= 1
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if enemies_alive <= 0 and not _boss_wave:
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_complete_wave()
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func _complete_wave() -> void:
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if wave_state != WaveState.BATTLE:
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return
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wave_state = WaveState.COMPLETE
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_boss_wave = false
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_boss_id = -1
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var cfg: Dictionary = _get_wave_config(current_wave)
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PlayerStats.gain_gold(int(cfg["gold"]))
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PlayerStats.gain_xp(int(cfg["xp"]))
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var elapsed: float = Time.get_ticks_msec() / 1000.0 - _wave_start_time
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EventBus.emit(EventID.WAVE_COMPLETE, {"wave": current_wave, "elapsed_sec": elapsed})
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print("[WaveManager] Wave %d 完成！奖励: %dG, %d XP" % [current_wave, int(cfg["gold"]), int(cfg["xp"])])
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func _get_wave_config(wave_num: int) -> Dictionary:
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var idx: int = clamp(wave_num - 1, 0, WAVE_CONFIG.size() - 1)
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var base: Dictionary = WAVE_CONFIG[idx].duplicate()
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# 超过 W20（Endless）：数值膨胀
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if wave_num > MAX_WAVE:
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var extra: int = wave_num - MAX_WAVE
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base["count"] = int(base["count"]) + extra * 6
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base["hp"] = float(base["hp"]) * pow(1.12, extra)
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base["gold"] = int(base["gold"]) + extra * 8
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base["xp"] = int(base["xp"]) + extra * 12
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base["boss"] = -1 # Endless 不重复终 Boss
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return base
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func get_wave_count(wave_num: int) -> int:
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return int(_get_wave_config(wave_num)["count"])
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func is_boss_wave(wave_num: int) -> bool:
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return int(_get_wave_config(wave_num).get("boss", -1)) >= 0
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func reset() -> void:
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current_wave = 0
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wave_state = WaveState.IDLE
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enemies_alive = 0
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_boss_id = -1
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_boss_phase = 0
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_boss_wave = false
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