落纹成塔：纹章落位立成塔，拦路自动发威

flowchart TD
A[点立塔] --> B{塔位满了吗}
B -- 满 --> C[拦下提示]
B -- 没满 --> D[纹章落位成塔]
D --> E[循时表走]
E --> F{归零 怪在场}
F -- 是 --> G[自动发一箭]
F -- 否 --> E
G --> E
H[撤塔] --> I[末座收账 塔位腾出]

 fx-crest-tower

-- @file CrestTower.lua
-- 落纹成塔 —— 纹章落位立成塔 拦路自动发威

local CrestTower = {}

local CONST = {
    SLOTS         = 2,
    FIRE_CD       = 1.2,
    TOWER_DMG     = 6,

    AUTOINC_BASE  = 1200300,
}

local _towers   = {}
local _timers   = {}
local _autoInc  = 0

local function ShowTip(msg)
    if msg and msg ~= "" then SL:ShowSystemTips(msg) end
end

local function GenID()
    _autoInc = _autoInc + 1
    return CONST.AUTOINC_BASE + _autoInc
end

function CrestTower.Count() return #_towers end

-- 立塔: 落位即生效
function CrestTower.Place()
    if #_towers >= CONST.SLOTS then
        ShowTip("两座塔位全满了")
        return
    end
    table.insert(_towers, GenID())
    table.insert(_timers, 0.3)
    ShowTip("第" .. #_towers .. "塔立起——自动发箭")
end

-- 撤塔: 末座收账
function CrestTower.Withdraw()
    if #_towers <= 0 then
        ShowTip("没有塔可撤")
        return
    end
    table.remove(_towers)
    table.remove(_timers)
    ShowTip("撤了末座——还剩" .. #_towers .. "座")
end

-- 每拍推进: 循时表归零且怪在场就发一箭
function CrestTower.Tick(dt, targetIn)
    for i = 1, #_timers do
        _timers[i] = _timers[i] - dt
        if _timers[i] <= 0 and targetIn then
            _timers[i] = CONST.FIRE_CD
            ShowTip("塔箭一发——" .. CONST.TOWER_DMG .. "点")
        end
        if _timers[i] < 0 then _timers[i] = 0 end
    end
end

if not _ticker then
    _ticker = SL:Schedule(function(dt)
        CrestTower.Tick(dt, true)
    end, 0.05)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("立纹塔!", function()
        CrestTower.Place()
    end)
    SL:BindDebugButton("撤塔", function()
        CrestTower.Withdraw()
    end)
    ShowTip("技能已加载: 落纹成塔")
end, 1.0)

function CrestTower.Unload()
    if _ticker then SL:Unschedule(_ticker) end
    _towers = {}
    _timers = {}
end

return CrestTower