藤鞭卷纹：藤条地里爬，爬到脚下卷起来

flowchart TD
A[点放藤] --> B[藤头入土]
B --> C[贴地蛇行爬行]
C --> D{爬到脚下了吗}
D -- 没有 --> C
D -- 到了 --> E[卷身抽击十六]
E --> F[缠身一拍二]
F --> G[藤影渐散 六秒再放]

 fx-crest-vine

-- @file CrestVine.lua
-- 藤鞭卷纹 —— 藤条地里爬 爬到脚下卷起来

local CrestVine = {}

local CONST = {
    CRAWL_TIME    = 1.6,
    WHIP_DMG      = 16,
    BIND_TIME     = 1.2,
    BONUS_DMG     = 8,
    VINE_CD       = 6,

    AUTOINC_BASE  = 1205100,
}

local _crawling = false
local _t        = 0
local _bound    = 0
local _cd       = 0
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 CrestVine.Bound() return _bound end
function CrestVine.Dmg()
    if _bound > 0 then return 16 + CONST.BONUS_DMG end
    return 16
end

-- 放藤: 每次爬行新开足迹表
function CrestVine.Release()
    if _cd > 0 then
        ShowTip("藤还在长——再等" .. math.ceil(_cd) .. "秒")
        return
    end
    _cd = CONST.VINE_CD
    _crawling = true
    _t = CONST.CRAWL_TIME
    ShowTip("藤条出洞——贴地爬过去")
end

-- 卷身抽击: 缠身迟滞
function CrestVine.OnReach()
    _crawling = false
    _bound = CONST.BIND_TIME
    ShowTip("卷身一记" .. CONST.WHIP_DMG .. "——缠它一拍二")
    return CONST.WHIP_DMG
end

if not _ticker then
    _ticker = SL:Schedule(function(dt)
        if _cd > 0 then _cd = _cd - dt end
        if _bound > 0 then _bound = _bound - dt end
        if not _crawling then return end
        _t = _t - dt
        if _t <= 0 then
            CrestVine.OnReach()
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("放藤!", function()
        CrestVine.Release()
    end)
    ShowTip("技能已加载: 藤鞭卷纹")
end, 1.0)

function CrestVine.Unload()
    if _ticker then SL:Unschedule(_ticker) end
    _crawling = false
    _bound = 0
end

return CrestVine