mtgodot-poc/project/dynamic_bounty_event_system.gd

# dynamic_bounty_event_system.gd —— Metin2 40250 单人单机动态事件与赏金通缉令系统 1:1
# 对照 40250 服务端 questmanager.cpp, char.cpp, quest.h
class_name DynamicBountyEventSystem
extends RefCounted

signal bounties_refreshed(bounty_list: Array)
signal bounty_progress_updated(bounty_id: String, current: int, target: int)
signal bounty_completed(bounty_id: String, title: String)
signal bounty_reward_claimed(bounty_id: String, exp: int, gold: int)

const BOUNTY_TYPE_HUNT  := "hunt"   # 怪物狩猎
const BOUNTY_TYPE_METIN := "metin"  # 魔石破除
const BOUNTY_TYPE_BOSS  := "boss"   # 首领讨伐

const BOUNTY_CHEST_VNUM := 50180    # 赏金猎人宝箱 (Bounty Chest)

# 活跃悬赏任务字典: id -> Dictionary
var active_bounties: Dictionary = {}
var total_completed_count: int = 0

# 每日自动生成/刷新 3 条特色赏金任务
func refresh_daily_bounties() -> Array:
	active_bounties.clear()

	# 1. 狩猎任务 (野蛮士兵 501, 目标 25 只)
	var b1: Dictionary = {
		"id": "bounty_hunt_barbarian",
		"type": BOUNTY_TYPE_HUNT,
		"title": "【通缉令】清剿荒原野蛮士兵",
		"target_vnum": 501,
		"target_count": 25,
		"current_count": 0,
		"is_completed": false,
		"is_claimed": false,
		"rewards": {
			"exp": 150000,
			"gold": 500000,
			"items": [{"vnum": 27003, "name": "红色药水(特大)", "count": 100}]
		}
	}

	# 2. 破灭魔石任务 (嫉妒之石 8008, 目标 2 颗)
	var b2: Dictionary = {
		"id": "bounty_metin_jealousy",
		"type": BOUNTY_TYPE_METIN,
		"title": "【天灾通缉】破灭野外嫉妒魔石",
		"target_vnum": 8008,
		"target_count": 2,
		"current_count": 0,
		"is_completed": false,
		"is_claimed": false,
		"rewards": {
			"exp": 300000,
			"gold": 1200000,
			"items": [{"vnum": 50300, "name": "技能书", "count": 1}]
		}
	}

	# 3. 讨伐世界首领 (九尾妖狐 1901, 目标 1 次)
	var b3: Dictionary = {
		"id": "bounty_boss_ninetails",
		"type": BOUNTY_TYPE_BOSS,
		"title": "【大统领诛杀令】斩落雪山九尾妖狐",
		"target_vnum": 1901,
		"target_count": 1,
		"current_count": 0,
		"is_completed": false,
		"is_claimed": false,
		"rewards": {
			"exp": 1000000,
			"gold": 3000000,
			"items": [
				{"vnum": BOUNTY_CHEST_VNUM, "name": "赏金猎人宝箱", "count": 1},
				{"vnum": 71003, "name": "祝福卷轴", "count": 1}
			]
		}
	}

	active_bounties[b1["id"]] = b1
	active_bounties[b2["id"]] = b2
	active_bounties[b3["id"]] = b3

	var list = [b1, b2, b3]
	bounties_refreshed.emit(list)
	return list

# 怪物击杀侦测挂钩
func on_mob_killed(mob_vnum: int, count: int = 1) -> void:
	for bid in active_bounties.keys():
		var b = active_bounties[bid]
		if b["is_completed"]:
			continue

		if (b["type"] == BOUNTY_TYPE_HUNT or b["type"] == BOUNTY_TYPE_BOSS) and b["target_vnum"] == mob_vnum:
			b["current_count"] = min(b["target_count"], b["current_count"] + count)
			bounty_progress_updated.emit(bid, b["current_count"], b["target_count"])

			if b["current_count"] >= b["target_count"]:
				b["is_completed"] = true
				total_completed_count += 1
				bounty_completed.emit(bid, b["title"])

# 魔石击碎侦测挂钩
func on_metin_destroyed(metin_vnum: int) -> void:
	for bid in active_bounties.keys():
		var b = active_bounties[bid]
		if b["is_completed"]:
			continue

		if b["type"] == BOUNTY_TYPE_METIN and b["target_vnum"] == metin_vnum:
			b["current_count"] = min(b["target_count"], b["current_count"] + 1)
			bounty_progress_updated.emit(bid, b["current_count"], b["target_count"])

			if b["current_count"] >= b["target_count"]:
				b["is_completed"] = true
				total_completed_count += 1
				bounty_completed.emit(bid, b["title"])

# 领取赏金通缉令奖励
func claim_bounty_reward(bounty_id: String, player_data: Dictionary, inventory: Array) -> Dictionary:
	if not active_bounties.has(bounty_id):
		return {"ok": false, "reason": "BOUNTY_NOT_FOUND", "msg": "未找到该通缉令！"}

	var b = active_bounties[bounty_id]
	if not b["is_completed"]:
		return {"ok": false, "reason": "NOT_COMPLETED", "msg": "该通缉令目标尚未达成！"}

	if b["is_claimed"]:
		return {"ok": false, "reason": "ALREADY_CLAIMED", "msg": "该通缉令赏金已被领取！"}

	var rew = b["rewards"]
	var exp_gain: int = rew.get("exp", 0)
	var gold_gain: int = rew.get("gold", 0)
	var items: Array = rew.get("items", [])

	# 发放经验与金币
	player_data["exp"] = int(player_data.get("exp", 0)) + exp_gain
	player_data["gold"] = int(player_data.get("gold", 0)) + gold_gain

	# 物品入包
	var granted_items := []
	for it in items:
		for i in range(inventory.size()):
			if inventory[i] == null:
				inventory[i] = it.duplicate(true)
				granted_items.append(it["name"])
				break

	b["is_claimed"] = true
	bounty_reward_claimed.emit(bounty_id, exp_gain, gold_gain)

	return {
		"ok": true,
		"bounty_id": bounty_id,
		"exp_gain": exp_gain,
		"gold_gain": gold_gain,
		"items_granted": granted_items,
		"msg": "通缉赏金核销！获得 %d 经验、%d 金币以及丰厚物资！" % [exp_gain, gold_gain]
	}

# 获取所有活跃悬赏
func get_active_bounties() -> Array:
	return active_bounties.values()