免死金纹：纹碎金光，刀下留人一线

 fx-deathward

-- @file DeathWard.lua
-- 免死纹 —— 纹碎金光，刀下留人一线

local DeathWard = {}

local CONST = {
    WARD_LIFE     = 12.0,
    WARD_CD       = 15.0,
    FLOOR_HP      = 1,
    INV_LIFE      = 1.5,

    COLOR_WARD    = "#d0a030",
    COLOR_DEEP    = "#584410",
    COLOR_GHOST   = "#f4d8a0",

    ZORDER_WARD   = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1080000,
}

local _wardT     = 0
local _cdLeft    = 0
local _wardOn    = false
local _wardFx    = nil
local _scheduler = nil
local _autoInc   = 0

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

function DeathWard.Cast()
    if _cdLeft > 0 or _wardOn then return end
    local myID = SL:GetValue("USER_ID")
    _cdLeft = CONST.WARD_CD
    _wardOn = true
    _wardT = CONST.WARD_LIFE
    SafeRemove(_wardFx)
    _wardFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Ward"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_wardFx, CONST.ZORDER_WARD)
    SL:PlayWardMarkFx(myID)
    SL:TipAboveMe("免死纹！")
    ShowTip("免死纹铭上了——十二秒内死不了")
end

-- 致死拦截：纹印在血量结算前截住致死一刀
SL:RegisterLUAEvent(LUA_EVENT_LETHAL_HIT, "DWD_Save", function(dmg)
    if not _wardOn then return dmg end
    local myID = SL:GetValue("USER_ID")
    _wardOn = false
    _wardT = 0
    SL:SetValue("ACTOR_HP", myID, CONST.FLOOR_HP)
    SL:AddBuff(myID, "INVINCIBLE", CONST.INV_LIFE)
    SL:PlayWardShatterFx(myID)
    SL:TipAboveMe("免死！")
    SL:LogTrace("DWD", "致死拦截生效——纹碎留一线")
    SafeRemove(_wardFx)
    ShowTip("纹碎了——刀下留了一线")
    return 0
end)

-- 定时器：纹印倒计时与纹环跟脚
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _wardOn and _wardT > 0 then
            _wardT = _wardT - dt
            local myID = SL:GetValue("USER_ID")
            local mp = GetActorPos(myID)
            if _wardFx and mp then
                GUI:setPosition(_wardFx, mp.x, mp.y - 62)
            end
            if _wardT <= 0 then
                _wardOn = false
                SafeRemove(_wardFx)
                ShowTip("纹到期散了——再铭一次")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("铭纹", function()
        DeathWard.Cast()
    end)
    ShowTip("技能已加载: 免死纹 (调试按钮触发)")
end, 1.0)

function DeathWard.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_LETHAL_HIT, "DWD_Save")
    SafeRemove(_wardFx)
    _wardOn = false
end

return DeathWard