双纹换形：红纹饮刀蓝纹披甲，一念换身

 fx-twincrest

-- @file TwinCrest.lua
-- 双纹 —— 红纹饮刀蓝纹披甲，一念换身

local TwinCrest = {}

local CONST = {
    SWAP_CD       = 3.0,
    RED_ATK       = 18,
    RED_TAKE      = 20,
    BLUE_ATK      = 6,
    BLUE_TAKE     = 7,

    COLOR_TWIN    = "#8868c8",
    COLOR_DEEP    = "#322058",
    COLOR_GHOST   = "#d8c8f0",

    ZORDER_TWIN   = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1081000,
}

local _mode      = "red"
local _swapCd    = 0
local _crestFx   = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "TWC",
        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 TwinCrest.CurAtk()
    return _mode == "red" and CONST.RED_ATK or CONST.BLUE_ATK
end

function TwinCrest.CurTake()
    return _mode == "red" and CONST.RED_TAKE or CONST.BLUE_TAKE
end

function TwinCrest.Swap()
    if _swapCd > 0 then return end
    local myID = SL:GetValue("USER_ID")
    _mode = (_mode == "red") and "blue" or "red"
    _swapCd = CONST.SWAP_CD
    local col = (_mode == "red") and CONST.RED_ATK or CONST.BLUE_ATK
    SL:PlaySwapFx(myID, _mode)
    SL:TipAboveMe(_mode == "red" and "红纹！" or "蓝纹！")
    SafeRemove(_crestFx)
    _crestFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Crest"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_crestFx, CONST.ZORDER_TWIN)
    if _mode == "red" then
        ShowTip("红纹临身——刀重十八 挨刀二十")
    else
        ShowTip("蓝纹护体——挨刀七 刀软六")
    end
end

-- 定时器：换形锁与菱纹跟脚
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _swapCd = math.max(0, _swapCd - dt)
        local myID = SL:GetValue("USER_ID")
        local mp = GetActorPos(myID)
        if _crestFx and mp then
            GUI:setPosition(_crestFx, mp.x, mp.y - 150)
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("换纹", function()
        TwinCrest.Swap()
    end)
    ShowTip("技能已加载: 双纹 (调试按钮触发)")
end, 1.0)

function TwinCrest.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SafeRemove(_crestFx)
    _mode = "red"
end

return TwinCrest