【玩法策划】行会技能塔：公会建筑与技能解锁设计

-- 技能塔：层级升级
local player = class(actor)
local TOWER_COST = {
    [2] = {wood = 200, stone = 150, silver = 50},
    [3] = {wood = 400, stone = 300, silver = 120},
}
local function upgradeTower(player, toLv)
    local cost = TOWER_COST[toLv]
    if cost == nil then
        sendmsg(player, 1, 0, "该层设计图尚未解锁。")
        return
    end
    for res, need in pairs(cost) do
        local have = tonumber(getsysvar("Tower_" .. res) or 0)
        if have < need then
            sendmsg(player, 1, 0, res .. " 储备不足：" .. have .. "/" .. need)
            return
        end
    end
    for res, need in pairs(cost) do
        setsysvarex("Tower_" .. res, tonumber(getsysvar("Tower_" .. res) or 0) - need, true)
    end
    setsysvarex("TowerLv", toLv, true)
    sendcentermsg(player, 255, 0, "行会技能塔升至 " .. toLv .. " 层，全新行会技能解锁！", 0, 10)
end

-- 技能解锁：成员领用
local player = class(actor)
local SKILL_LV = {recall = 2, boost = 3, charge = 4, shield = 5}
local function claimTowerSkill(player, skill)
    local towerLv = tonumber(getsysvar("TowerLv") or 1)
    if towerLv < SKILL_LV[skill] then
        sendmsg(player, 1, 0, "技能塔 " .. SKILL_LV[skill] .. " 层尚未解锁该技能。")
        return
    end
    local used = tonumber(getplayvar(player, "HUMAN", "SkillUse_" .. os.date("%W") .. skill) or 0)
    if used >= 1 then
        sendmsg(player, 1, 0, "本周该技能已领用。")
        return
    end
    setplayvar(player, "HUMAN", "SkillUse_" .. os.date("%W") .. skill, 1, true)
    if skill == "recall" then
        beginteleport(player, 88, 66)
        sendmsg(player, 1, 0, "集体回城已发动！")
    end
end