mtgodot-poc/project/fishing_cooking_camp_system.gd

# fishing_cooking_camp_system.gd —— Metin2 40250 野外钓鱼烹饪与生火露营增益系统 1:1
# 对照 40250 服务端 fishing.cpp, char_item.cpp, affect.h
class_name FishingCookingCampSystem
extends RefCounted

signal campfire_lit(pos: Vector3, duration: float)
signal campfire_extinguished()
signal fish_cooked(raw_vnum: int, cooked_vnum: int, cooked_name: String)
signal food_buff_applied(buff_id: String, buff_name: String, duration: float)
signal food_buff_expired(buff_id: String)

const CAMPFIRE_KIT_VNUM := 27600    # 营火工具 (Campfire)
const CAMPFIRE_DURATION := 300.0    # 营火持续 5 分钟
const FOOD_BUFF_DURATION := 1800.0  # 食用增益 30 分钟 (1800 秒)

# 鱼类与烹饪食谱
const RECIPES: Dictionary = {
	27802: { # 生鲤鱼 -> 烤鲤鱼
		"cooked_vnum": 27832,
		"cooked_name": "烤鲤鱼",
		"buff_id": "buff_grilled_carp",
		"stat_key": "max_hp",
		"stat_val": 1000,
		"desc": "最大生命上限 +1000，持续 30 分钟"
	},
	27803: { # 生草鱼 -> 烤草鱼
		"cooked_vnum": 27833,
		"cooked_name": "烤草鱼",
		"buff_id": "buff_grilled_grass_carp",
		"stat_key": "move_speed",
		"stat_val": 15,
		"desc": "移动速度 +15，持续 30 分钟"
	},
	27815: { # 生红鳟鱼 -> 烤红鳟鱼
		"cooked_vnum": 27845,
		"cooked_name": "烤红鳟鱼",
		"buff_id": "buff_grilled_trout",
		"stat_key": "atk",
		"stat_val": 50,
		"desc": "攻击力 +50，持续 30 分钟"
	}
}

# 烤鱼物品映射
const COOKED_FOODS: Dictionary = {
	27832: {"buff_id": "buff_grilled_carp", "name": "烤鲤鱼", "stat_key": "max_hp", "stat_val": 1000},
	27833: {"buff_id": "buff_grilled_grass_carp", "name": "烤草鱼", "stat_key": "move_speed", "stat_val": 15},
	27845: {"buff_id": "buff_grilled_trout", "name": "烤红鳟鱼", "stat_key": "atk", "stat_val": 50}
}

var is_campfire_active: bool = false
var campfire_timer: float = 0.0
var campfire_pos: Vector3 = Vector3.ZERO

# 活跃中的食物 Buff: buff_id -> { "remaining": float, "stat_key": String, "stat_val": int }
var active_buffs: Dictionary = {}

# 点燃野外营火
func light_campfire(pos: Vector3, inventory: Array) -> Dictionary:
	var kit_slot = -1
	for i in range(inventory.size()):
		if inventory[i] != null and int(inventory[i].get("vnum", 0)) == CAMPFIRE_KIT_VNUM:
			kit_slot = i
			break

	if kit_slot == -1:
		return {"ok": false, "reason": "NO_CAMPFIRE_KIT", "msg": "背包中没有【营火工具】(27600)！"}

	# 消耗 1 个营火工具
	var item = inventory[kit_slot]
	var cnt = int(item.get("count", 1))
	if cnt > 1:
		item["count"] = cnt - 1
	else:
		inventory[kit_slot] = null

	is_campfire_active = true
	campfire_timer = CAMPFIRE_DURATION
	campfire_pos = pos

	campfire_lit.emit(pos, CAMPFIRE_DURATION)

	return {
		"ok": true,
		"pos": pos,
		"duration": CAMPFIRE_DURATION,
		"msg": "营火已点燃！散发着温暖火光，可在此烧烤烹饪渔获！"
	}

# 在营火旁烹饪烤鱼
func cook_fish(slot: int, inventory: Array) -> Dictionary:
	if not is_campfire_active:
		return {"ok": false, "reason": "NO_ACTIVE_CAMPFIRE", "msg": "周围没有生起的营火，无法烹饪！"}

	if slot < 0 or slot >= inventory.size() or inventory[slot] == null:
		return {"ok": false, "reason": "INVALID_SLOT"}

	var raw_item = inventory[slot]
	var raw_vnum = int(raw_item.get("vnum", 0))

	if not RECIPES.has(raw_vnum):
		return {"ok": false, "reason": "NOT_COOKABLE", "msg": "此物品无法在营火上烹饪！"}

	var r = RECIPES[raw_vnum]
	# 消耗 1 条生鱼
	var cnt = int(raw_item.get("count", 1))
	if cnt > 1:
		raw_item["count"] = cnt - 1
	else:
		inventory[slot] = null

	# 入包烤鱼
	var cooked_vnum: int = r["cooked_vnum"]
	var cooked_name: String = r["cooked_name"]

	# 寻找可叠加的空格或同类
	var placed := false
	for i in range(inventory.size()):
		if inventory[i] != null and int(inventory[i].get("vnum", 0)) == cooked_vnum:
			inventory[i]["count"] = int(inventory[i].get("count", 1)) + 1
			placed = true
			break

	if not placed:
		for i in range(inventory.size()):
			if inventory[i] == null:
				inventory[i] = {
					"vnum": cooked_vnum,
					"name": cooked_name,
					"count": 1
				}
				placed = true
				break

	fish_cooked.emit(raw_vnum, cooked_vnum, cooked_name)

	return {
		"ok": true,
		"cooked_name": cooked_name,
		"desc": r["desc"],
		"msg": "滋滋作响！成功烤制出色香味俱全的【%s】！" % cooked_name
	}

# 食用烤鱼获得 30 分钟强力 Buff
func eat_cooked_fish(slot: int, inventory: Array, player_data: Dictionary) -> Dictionary:
	if slot < 0 or slot >= inventory.size() or inventory[slot] == null:
		return {"ok": false, "reason": "INVALID_SLOT"}

	var item = inventory[slot]
	var vnum = int(item.get("vnum", 0))

	if not COOKED_FOODS.has(vnum):
		return {"ok": false, "reason": "NOT_EDIBLE_COOKED_FISH"}

	var cfg = COOKED_FOODS[vnum]
	var bid: String = cfg["buff_id"]
	var stat_k: String = cfg["stat_key"]
	var stat_v: int = cfg["stat_val"]

	# 消耗 1 条烤鱼
	var cnt = int(item.get("count", 1))
	if cnt > 1:
		item["count"] = cnt - 1
	else:
		inventory[slot] = null

	# 如果已有同类 Buff，先刷新时长并避免重复叠加属性
	if active_buffs.has(bid):
		active_buffs[bid]["remaining"] = FOOD_BUFF_DURATION
	else:
		player_data[stat_k] = int(player_data.get(stat_k, 0)) + stat_v
		active_buffs[bid] = {
			"remaining": FOOD_BUFF_DURATION,
			"stat_key": stat_k,
			"stat_val": stat_v,
			"name": cfg["name"]
		}

	food_buff_applied.emit(bid, cfg["name"], FOOD_BUFF_DURATION)

	return {
		"ok": true,
		"buff_id": bid,
		"buff_name": cfg["name"],
		"stat_key": stat_k,
		"stat_val": stat_v,
		"current_stat": player_data[stat_k],
		"msg": "品尝了美味的【%s】！精神焕发，获得了【%s +%d】持续 30 分钟！" % [cfg["name"], stat_k, stat_v]
	}

# 帧心跳更新营火与食物 Buff
func update(delta: float, player_data: Dictionary) -> void:
	# 营火计时
	if is_campfire_active:
		campfire_timer -= delta
		if campfire_timer <= 0.0:
			is_campfire_active = false
			campfire_extinguished.emit()

	# 食物 Buff 计时与过期反扣
	var expired_ids := []
	for bid in active_buffs.keys():
		var b = active_buffs[bid]
		b["remaining"] -= delta
		if b["remaining"] <= 0.0:
			expired_ids.append(bid)

	for bid in expired_ids:
		var b = active_buffs[bid]
		var stat_k = b["stat_key"]
		var stat_v = b["stat_val"]
		player_data[stat_k] = max(0, int(player_data.get(stat_k, 0)) - stat_v)
		active_buffs.erase(bid)
		food_buff_expired.emit(bid)