遁地袭纹：人从土里来，一拱掀它个跟头

flowchart TD
A[点遁地] --> B[沉身入土]
B --> C[土包赶路]
C --> D{拱到它脚下了吗}
D -- 没有 --> C
D -- 到了 --> E[炸开掀三十]
E --> F[误它两拍出爪]
F --> G[原地出土]
G --> H[八秒后再钻]

 fx-crest-burrow

-- @file CrestBurrow.lua
-- 遁地袭纹 —— 人从土里来 一拱掀它个跟头

local CrestBurrow = {}

local CONST = {
    SINK_TIME     = 0.5,
    TRAVEL_TIME   = 0.8,
    ERUPT_DMG     = 30,
    DELAY_TIME    = 2,
    BURROW_CD     = 8,

    AUTOINC_BASE  = 1204000,
}

local _phase    = 0
local _t        = 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 CrestBurrow.Phase() return _phase end

-- 遁地: 三段的第一段
function CrestBurrow.Dive()
    if _cd > 0 then
        ShowTip("土还没缓过来——再等" .. math.ceil(_cd) .. "秒")
        return
    end
    _cd = CONST.BURROW_CD
    _phase = 1
    _t = CONST.SINK_TIME
    ShowTip("遁地!土包子出发了")
end

-- 拱出重击: 误它两拍
function CrestBurrow.Erupt()
    _phase = 0
    ShowTip("拱出重击!" .. CONST.ERUPT_DMG .. "——误它两拍")
    return CONST.ERUPT_DMG, CONST.DELAY_TIME
end

if not _ticker then
    _ticker = SL:Schedule(function(dt)
        if _cd > 0 then _cd = _cd - dt end
        if _phase == 0 then return end
        _t = _t - dt
        if _t <= 0 then
            if _phase == 1 then
                _phase = 2
                _t = CONST.TRAVEL_TIME
            else
                CrestBurrow.Erupt()
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("遁地!", function()
        CrestBurrow.Dive()
    end)
    ShowTip("技能已加载: 遁地袭纹")
end, 1.0)

function CrestBurrow.Unload()
    if _ticker then SL:Unschedule(_ticker) end
    _phase = 0
end

return CrestBurrow