交班：双岗交班那一秒，谁都不设防

 fx-shiftswap

-- @file ShiftSwap.lua
-- 交班 —— 双岗交班那一秒，谁都不设防

local ShiftSwap = {}

local CONST = {
    CYCLE_TIME    = 4.0,
    SWAP_TIME     = 1.0,
    WHITE_AMP     = 2.0,

    COLOR_SWAP    = "#5888a8",
    COLOR_DEEP    = "#1e3040",
    COLOR_GHOST   = "#c0d8e8",

    ZORDER_SWAP   = 129,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1035000,
}

local _cycleT    = CONST.CYCLE_TIME
local _swapFx    = nil
local _swapT     = 0
local _cdLeft    = 0
local _scheduler = nil
local _autoInc   = 0

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

local function StartSwap()
    _swapT = CONST.SWAP_TIME
    local ids = SL:GetGuardPair()
    for _, gid in ipairs(ids) do
        SL:FreezeActorAll(gid, CONST.SWAP_TIME)
        SL:PlaySaluteFx(gid)
        SL:TipAbove(gid, "白身")
    end
    SL:PlaySwapGongFx()
    ShowTip("交班了——俩都白身，一秒双倍")
end

function ShiftSwap.Hurry()
    if _cdLeft > 0 then
        ShowTip("岗在催——" .. string.format("%.1f", _cdLeft) .. "秒")
        return
    end
    _cdLeft = 5.0
    _cycleT = math.min(_cycleT, 0.4)
    SL:PlayHurryWhistleFx()
    ShowTip("哨响了——它们提前交班，看好那一秒")
end

-- 白身出口：交班期的刀翻倍
SL:RegisterLUAEvent(LUA_EVENT_BEFORE_HURT, "SSW_White", function(tid, dmg)
    if _swapT > 0 and SL:IsGuard(tid) then
        return math.floor(dmg * CONST.WHITE_AMP)
    end
    return dmg
end)

-- 定时器：节拍推进与交班触发
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _swapT > 0 then
            _swapT = _swapT - dt
            local mp = GetActorPos(SL:GetValue("USER_ID"))
            if _swapFx and mp then
                GUI:setPosition(_swapFx, mp.x, mp.y - 50)
            end
            if _swapT <= 0 then
                ShowTip("班交完了——恢复设防，等下一班")
            end
            return
        end
        _cycleT = _cycleT - dt
        if _cycleT <= 0 then
            _cycleT = CONST.CYCLE_TIME
            StartSwap()
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("催岗", function()
        ShiftSwap.Hurry()
    end)
    ShowTip("技能已加载: 交班 (调试按钮触发)")
end, 1.0)

function ShiftSwap.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_BEFORE_HURT, "SSW_White")
    SafeRemove(_swapFx)
    _swapT = 0
end

return ShiftSwap