头刀卯纹：新怪头一刀，先点先得加倍

 fx-firstcut

-- @file FirstCut.lua
-- 头刀纹 —— 新怪头一刀，先点先得二十六

local FirstCut = {}

local CONST = {
    CREST_LIFE    = 14.0,
    CREST_CD      = 4.0,
    FIRST_DMG     = 26,
    BASE_DMG      = 12,

    COLOR_FIRST   = "#b09038",
    COLOR_DEEP    = "#483810",
    COLOR_GHOST   = "#f0e0a8",

    ZORDER_FIRST  = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1097000,
}

local _crestT    = 0
local _cdLeft    = 0
local _ledger    = {}
local _crestFx   = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "FTC",
        CONST.AUTOINC_BASE + _autoInc)
end

local function GetActorPos(id)
    if not id then return nil end
    local x = SL:GetValue("ACTOR_POSITION_X", id)
    local y = SL:GetValue("ACTOR_POSITION_Y", id)
    if not x or not y then return nil end
    return { x = x, y = y }
end

local function SafeRemove(node)
    if node and not GUI:Widget_IsNull(node) then
        GUI:removeFromParent(node)
    end
end

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

-- 点卯账：一怪一页，没翻过的页都是"未点卯"
function FirstCut.IsFresh(tid)
    if _ledger[tid] == nil then return true end
    return _ledger[tid]
end

-- 头刀结算：出手前翻账，头刀落账当场翻页
function FirstCut.SwingDamage(tid)
    if _crestT <= 0 or not tid then
        return CONST.BASE_DMG
    end
    if FirstCut.IsFresh(tid) then
        _ledger[tid] = false
        SL:TipAbove(tid, "头刀!")
        SL:PlayFirstCutFx(tid)
        return CONST.FIRST_DMG
    end
    return CONST.BASE_DMG
end

function FirstCut.Cast()
    if _cdLeft > 0 or _crestT > 0 then return end
    local myID = SL:GetValue("USER_ID")
    _cdLeft = CONST.CREST_CD
    _crestT = CONST.CREST_LIFE
    _ledger = {}
    SafeRemove(_crestFx)
    _crestFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Ledger"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_crestFx, CONST.ZORDER_FIRST)
    SL:PlayLedgerUpFx(myID)
    ShowTip("点卯开了——每只怪的头一刀都是二十六")
end

-- 定时器：纹成倒计时与金字跟画
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _crestT > 0 then
            _crestT = _crestT - dt
            local myID = SL:GetValue("USER_ID")
            local mp = GetActorPos(myID)
            if _crestFx and mp then
                GUI:setPosition(_crestFx, mp.x, mp.y - 62)
            end
            if _crestT <= 0 then
                SafeRemove(_crestFx)
                ShowTip("纹收了——新怪的头刀回平常")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("点卯", function()
        FirstCut.Cast()
    end)
    ShowTip("技能已加载: 头刀纹 (调试按钮触发)")
end, 1.0)

function FirstCut.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SafeRemove(_crestFx)
    _crestT = 0
    _ledger = {}
end

return FirstCut