吞劲奇纹：喂它五拳，它自己噎住

 fx-swallow

-- @file Swallow.lua
-- 吞劲纹 —— 喂它五拳，它自己噎住

local Swallow = {}

local CONST = {
    CREST_LIFE    = 12.0,
    CREST_CD      = 4.0,
    STACK_CAP     = 5,
    CHOKE_LIFE    = 2.0,
    CHOKE_DMG     = 20,

    COLOR_SWAL    = "#689868",
    COLOR_DEEP    = "#1e4018",
    COLOR_GHOST   = "#c8e8c0",

    ZORDER_SWAL   = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1095000,
}

local _crestT    = 0
local _stacks    = 0
local _chokeT    = 0
local _cdLeft    = 0
local _hostID    = 0
local _crestFx   = nil
local _scheduler = nil
local _autoInc   = 0

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

-- 清账：换宿主的那一拍旧账当场撕掉
local function ResetStacks(newHost)
    _stacks = 0
    _hostID = newHost or 0
end

-- 记功：它打你的每一拳进一颗珠
SL:RegisterLUAEvent(LUA_EVENT_HURT_TAKEN, "SWL_Feed", function(srcID)
    if _crestT <= 0 or _chokeT > 0 then return end
    if srcID ~= _hostID then
        ResetStacks(srcID)
        return
    end
    _stacks = _stacks + 1
    if _stacks >= CONST.STACK_CAP then
        Swallow.Choke()
    end
end)

-- 封账噎住：五珠封顶，空门加清算一并结账
function Swallow.Choke()
    _stacks = 0
    _chokeT = CONST.CHOKE_LIFE
    local tid = SL:GetValue("MARK_TARGET_ID")
    if not tid then return end
    SL:AddBuff(tid, "CHOKE_STUN", CONST.CHOKE_LIFE)
    SL:ActorHurt(tid, CONST.CHOKE_DMG)
    SL:TipAbove(tid, "噎!-" .. CONST.CHOKE_DMG)
    SL:PlayChokeFx(tid)
    ShowTip("它噎住了——两秒空门，白拿二十")
end

function Swallow.Cast()
    if _cdLeft > 0 or _crestT > 0 then return end
    local tid = SL:GetValue("MARK_TARGET_ID")
    if not tid then return end
    _cdLeft = CONST.CREST_CD
    _crestT = CONST.CREST_LIFE
    ResetStacks(tid)
    SafeRemove(_crestFx)
    _crestFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Crest"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_crestFx, CONST.ZORDER_SWAL)
    SL:PlaySwallowUpFx(tid)
    ShowTip("吞劲纹开了——它的每一拳都在给你记功")
end

-- 定时器：纹成倒计时与噎住消化
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _chokeT > 0 then
            _chokeT = _chokeT - dt
            if _chokeT <= 0 then
                ShowTip("它噎完了——拳头又落下来了")
            end
        end
        if _crestT > 0 then
            _crestT = _crestT - dt
            local tid = SL:GetValue("MARK_TARGET_ID")
            local tp = tid and GetActorPos(tid)
            if _crestFx and tp then
                GUI:setPosition(_crestFx, tp.x, tp.y - 96)
            end
            if _crestT <= 0 then
                SafeRemove(_crestFx)
                ResetStacks(0)
                ShowTip("纹收了——账清了，回到平常的挨打")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("张口", function()
        Swallow.Cast()
    end)
    ShowTip("技能已加载: 吞劲纹 (调试按钮触发)")
end, 1.0)

function Swallow.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_HURT_TAKEN, "SWL_Feed")
    SafeRemove(_crestFx)
    _crestT = 0
    ResetStacks(0)
end

return Swallow