嫁祸奇纹：它这一爪，落在同伴头上

 fx-redirect

-- @file Redirect.lua
-- 嫁祸纹 —— 它这一爪，落在同伴头上

local Redirect = {}

local CONST = {
    WARD_LIFE     = 3.0,
    WARD_CD       = 5.0,
    SEARCH_RANGE  = 300,

    COLOR_REDIR   = "#8a68b8",
    COLOR_DEEP    = "#342458",
    COLOR_GHOST   = "#d8c8f0",

    ZORDER_REDIR  = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1086000,
}

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

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "RDD",
        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 Redirect.FindPartner(tid)
    if not tid then return nil end
    return SL:FindNearMonster(tid, CONST.SEARCH_RANGE)
end

-- 目标改写：窗口内它出手的那一拍半路改写落点
SL:RegisterLUAEvent(LUA_EVENT_BEFORE_HURT, "RDD_Redirect",
function(srcID, dmg)
    if _wardT <= 0 then return dmg end
    if srcID ~= SL:GetValue("MARK_TARGET_ID") then return dmg end
    local partner = Redirect.FindPartner(srcID)
    if not partner then
        ShowTip("旁边没有同伴——这一爪只能自己收")
        return dmg
    end
    SL:ActorHurt(partner, dmg)
    SL:TipAbove(partner, "替-" .. dmg)
    SL:PlayTransferFx(srcID, partner)
    _wardT = 0
    SafeRemove(_wardFx)
    ShowTip("这一爪落在它同伴头上了")
    return 0
end)

function Redirect.Cast()
    if _cdLeft > 0 or _wardT > 0 then return end
    local tid = SL:GetValue("MARK_TARGET_ID")
    if not tid then return end
    if not Redirect.FindPartner(tid) then
        ShowTip("它没有同伴——嫁祸无从借刀")
        return
    end
    _cdLeft = CONST.WARD_CD
    _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_REDIR)
    SL:PlayWardLinkFx(tid)
    ShowTip("嫁祸纹开了——它下一爪落在同伴头上")
end

-- 定时器：窗口倒计时与连线的跟画
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _wardT > 0 then
            _wardT = _wardT - dt
            local tid = SL:GetValue("MARK_TARGET_ID")
            local partner = tid and Redirect.FindPartner(tid)
            local a = tid and GetActorPos(tid)
            local b = partner and GetActorPos(partner)
            if _wardFx and a and b then
                GUI:setPosition(_wardFx,
                    (a.x + b.x) / 2, (a.y + b.y) / 2 - 140)
            end
            if _wardT <= 0 then
                SafeRemove(_wardFx)
                ShowTip("纹收了——它的爪又归你挨了")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("嫁祸", function()
        Redirect.Cast()
    end)
    ShowTip("技能已加载: 嫁祸纹 (调试按钮触发)")
end, 1.0)

function Redirect.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_BEFORE_HURT, "RDD_Redirect")
    SafeRemove(_wardFx)
    _wardT = 0
end

return Redirect