mtgodot-poc/project/mall_affect_system.gd

# mall_affect_system.gd —— Metin2 40250 商城常驻 Affect 增益与双倍特权系统 1:1
# 对照 40250 服务端 affect.h, char_affect.cpp 及客户端 uiaffectshower.py:647-670
class_name MallAffectSystem
extends RefCounted

signal affect_added(affect_type: int, data: Dictionary)
signal affect_removed(affect_type: int)

# 40250 官方常驻增益 Affect 常量 (uiaffectshower.py)
const AFFECT_EXP_BONUS := 500
const AFFECT_ITEM_BONUS := 501
const AFFECT_SAFEBOX := 502
const AFFECT_AUTOLOOT := 503
const AFFECT_FISH_MIND := 504
const AFFECT_MARRIAGE_FAST := 505
const AFFECT_GOLD_BONUS := 506
const AFFECT_NO_DEATH_PENALTY := 507
const AFFECT_AUTO_HP_RECOVERY := 508
const AFFECT_AUTO_SP_RECOVERY := 509

# 官方图标资源映射 (uiaffectshower.py:647-670)
const AFFECT_INFO: Dictionary = {
	AFFECT_EXP_BONUS: {
		"name": "经验值获取提升",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/exp_bonus.sub",
		"desc": "打怪获得的经验值提升！"
	},
	AFFECT_ITEM_BONUS: {
		"name": "盗贼手套掉宝增益",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/item_bonus.sub",
		"desc": "击杀怪物掉落物品的概率翻倍！"
	},
	AFFECT_SAFEBOX: {
		"name": "仓库空间扩展",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/safebox.sub",
		"desc": "享有二号与三号高级扩展储物箱！"
	},
	AFFECT_AUTOLOOT: {
		"name": "自动拾取金币",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/autoloot.sub",
		"desc": "击杀怪物掉落的金币自动拾取至钱包。"
	},
	AFFECT_FISH_MIND: {
		"name": "渔神专注",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/fishmind.sub",
		"desc": "钓鱼成功率获得大幅提升。"
	},
	AFFECT_MARRIAGE_FAST: {
		"name": "爱神羽毛",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/marriage_fast.sub",
		"desc": "同伴好感度积累速度倍增。"
	},
	AFFECT_GOLD_BONUS: {
		"name": "幸运金币",
		"icon_sub": "d:/ymir work/ui/skill/common/affect/gold_bonus.sub",
		"desc": "怪物掉落的金币数量翻倍！"
	},
	AFFECT_AUTO_HP_RECOVERY: {
		"name": "太阳仙丹",
		"icon_sub": "d:/ymir work/ui/pattern/auto_hpgauge/05.dds",
		"desc": "生命值低于阈值时自动回复。"
	},
	AFFECT_AUTO_SP_RECOVERY: {
		"name": "月亮仙丹",
		"icon_sub": "d:/ymir work/ui/pattern/auto_spgauge/05.dds",
		"desc": "法力值低于阈值时自动回复。"
	}
}

# 经典商城道具 Vnum 映射
const MALL_ITEM_TABLE: Dictionary = {
	70005: {"affect": AFFECT_EXP_BONUS, "duration": 3600.0, "value": 50},     # 经验戒指 1小时 (+50%)
	72001: {"affect": AFFECT_EXP_BONUS, "duration": 604800.0, "value": 100},  # 经验戒指 7天 (+100%)
	70043: {"affect": AFFECT_ITEM_BONUS, "duration": 7200.0, "value": 100},   # 盗贼手套 2小时 (2x)
	72004: {"affect": AFFECT_ITEM_BONUS, "duration": 604800.0, "value": 100}, # 盗贼手套 7天 (2x)
	70044: {"affect": AFFECT_GOLD_BONUS, "duration": 10800.0, "value": 100},  # 幸运金币 3小时 (2x)
	72007: {"affect": AFFECT_GOLD_BONUS, "duration": 604800.0, "value": 100}, # 幸运金币 7天 (2x)
	72006: {"affect": AFFECT_SAFEBOX, "duration": 604800.0, "value": 1},       # 仓库扩展卷 7天
	71069: {"affect": AFFECT_MARRIAGE_FAST, "duration": 604800.0, "value": 1} # 爱神羽毛 7天
}

# 当前生效的增益字典: affect_type -> {name, icon_sub, value, duration, total_duration, desc}
var active_affects: Dictionary = {}

func use_mall_item(item: Dictionary) -> Dictionary:
	var vnum: int = int(item.get("vnum", 0))
	if not MALL_ITEM_TABLE.has(vnum):
		return {"ok": false, "reason": "NOT_MALL_ITEM", "msg": "这不是商城特权道具！"}

	var cfg: Dictionary = MALL_ITEM_TABLE[vnum]
	var atype: int = int(cfg["affect"])
	var dur: float = float(cfg["duration"])
	var val: int = int(cfg["value"])

	add_affect(atype, dur, val)

	var info: Dictionary = AFFECT_INFO.get(atype, {})
	return {
		"ok": true,
		"affect_type": atype,
		"name": info.get("name", "特权增益"),
		"duration": dur,
		"value": val,
		"msg": "已成功激活【%s】特权！" % info.get("name", "")
	}

func add_affect(atype: int, duration: float, value: int = 0) -> void:
	var info: Dictionary = AFFECT_INFO.get(atype, {
		"name": "未知特权",
		"icon_sub": "",
		"desc": ""
	})

	var data: Dictionary = {
		"name": info["name"],
		"icon_sub": info["icon_sub"],
		"value": value,
		"duration": duration,
		"total_duration": duration,
		"desc": info["desc"]
	}

	active_affects[atype] = data
	affect_added.emit(atype, data)

func remove_affect(atype: int) -> void:
	if active_affects.has(atype):
		active_affects.erase(atype)
		affect_removed.emit(atype)

func has_affect(atype: int) -> bool:
	return active_affects.has(atype)

func get_affect(atype: int) -> Dictionary:
	return active_affects.get(atype, {})

# 经验倍率加成 (char.cpp:PointChange)
func get_exp_multiplier() -> float:
	var mult: float = 1.0
	if has_affect(AFFECT_EXP_BONUS):
		var bonus_pct: float = float(active_affects[AFFECT_EXP_BONUS].get("value", 50))
		mult += bonus_pct / 100.0
	return mult

# 物品掉率倍率加成 (item.cpp:Drop)
func get_drop_multiplier() -> float:
	if has_affect(AFFECT_ITEM_BONUS):
		return 2.0
	return 1.0

# 金币掉落倍率加成 (char_battle.cpp:GiveGold)
func get_gold_multiplier() -> float:
	if has_affect(AFFECT_GOLD_BONUS):
		return 2.0
	return 1.0

# 仓库扩充权限 (safebox.cpp)
func has_safebox_expansion() -> bool:
	return has_affect(AFFECT_SAFEBOX)

# 逐帧衰减更新
func update(dt: float) -> Array[int]:
	var expired: Array[int] = []
	for atype in active_affects.keys():
		var data: Dictionary = active_affects[atype]
		data["duration"] = maxf(0.0, float(data["duration"]) - dt)
		if float(data["duration"]) <= 0.0:
			expired.append(atype)

	for atype in expired:
		remove_affect(atype)

	return expired

# 获取供 HUD 渲染的图标列表
func get_hud_icons() -> Array[Dictionary]:
	var icons: Array[Dictionary] = []
	for atype in active_affects:
		var data: Dictionary = active_affects[atype]
		var total_sec := int(ceil(float(data["duration"])))
		var hours := total_sec / 3600
		var mins := (total_sec % 3600) / 60
		var secs := total_sec % 60
		var time_str := "%02d:%02d:%02d" % [hours, mins, secs] if hours > 0 else "%02d:%02d" % [mins, secs]

		icons.append({
			"affect_type": atype,
			"name": data["name"],
			"icon_sub": data["icon_sub"],
			"time_remaining_str": time_str,
			"remaining_seconds": float(data["duration"]),
			"desc": data["desc"]
		})
	return icons