逆刃：挨打瞬间架招，用它的刀力打回去

 fx-reverseblade

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-- @file        ReverseBlade.lua
-- @brief       逆刃 —— 挨打瞬间架招，用它的刀力打回去
--              客户端表现模块：配置表 / 逆刃架构件 / 借力状态机 / 定时器
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local ReverseBlade = {}

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-- 配置与常量
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local CONST = {
    GUARD_LIFE    = 0.6,        -- 架面半秒多一点
    GUARD_CD      = 2.5,        -- 架招冷却
    BORROW_LIFE   = 1.2,        -- 借力条一点二秒
    BORROW_DMG    = 40,         -- 借力一刀四十
    WHIFF_STUN    = 0.5,        -- 架空自僵半秒

    -- 颜色
    COLOR_BLADE   = "#d8e0ea",  -- 逆刃银
    COLOR_DEEP    = "#2a3a5e",  -- 深蓝
    COLOR_GHOST   = "#f0f4fa",  -- 刃白

    ZORDER_GROUND = 118,
    ZORDER_GUARD  = 133,
    ZORDER_EFFECT = 135,

    AUTOINC_BASE  = 956000,
}

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-- 模块内部状态
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local _guardT     = 0              -- 架面余时
local _chargedT   = 0              -- 借力余时
local _cdLeft     = 0
local _scheduler  = nil
local _autoInc    = 0

local m_cos = math.cos
local m_sin = math.sin

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-- 辅助函数
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local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "RVB", CONST.AUTOINC_BASE + _autoInc)
end

local function GetMyPos()
    local x = SL:GetValue("ACTOR_POSITION_X", SL:GetValue("USER_ID"))
    local y = SL:GetValue("ACTOR_POSITION_Y", SL:GetValue("USER_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

---逆刃架构件：身前的弧形架面
local function CreateGuardArc()
    local mp = GetMyPos()
    if not mp then return end
    local node = GUI:Layout_Create(GUI:Attach_SceneF(), GenID("Arc"),
        mp.x + 12, mp.y - 50, 0, 0, false)
    GUI:setLocalZOrder(node, CONST.ZORDER_GUARD)
    for i = 0, 8 do
        local a = -1.2 + i * 0.3
        GUI:DrawLine_Create(node, "g_" .. i, 0, 0, 3,
            m_cos(a) * 16, m_sin(a) * 16, m_cos(a) * 16, m_sin(a) * 16,
            CONST.COLOR_GHOST, 230)
    end
    return node
end

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-- 举架
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function ReverseBlade.Cast()
    if _cdLeft > 0 or _guardT > 0 then return end
    _cdLeft = CONST.GUARD_CD
    _guardT = CONST.GUARD_LIFE
    CreateGuardArc()
    ShowTip("架了——半秒，赌它的刀到不到")
end

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-- 落刀判定：架面接刀
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local function OnMonsterSwing(raw)
    if _guardT > 0 then
        _guardT = 0
        _chargedT = CONST.BORROW_LIFE
        SL:StunActor(SL:GetValue("MARK_TARGET_ID"), 0.4)
        SL:TipAboveMe("被架！")
        return
    end
    SL:PlayerHurt(raw)
end

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-- 借力出刀：普攻循环的截胡
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local function OnMyAttackTick()
    if _chargedT > 0 then
        _chargedT = 0
        SL:ActorHurt(SL:GetValue("MARK_TARGET_ID"), CONST.BORROW_DMG)
        SL:TipAbove(SL:GetValue("MARK_TARGET_ID"), "-借力" .. CONST.BORROW_DMG)
        return
    end
    SL:ActorHurt(SL:GetValue("MARK_TARGET_ID"), 12)
end

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-- 定时器：双条递减与攻击截胡
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if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _guardT > 0 then
            _guardT = _guardT - dt
            if _guardT <= 0 and _chargedT <= 0 then
                _whiff = true
                SL:TipAboveMe("架空了——半秒白等")
            end
        end
        if _chargedT > 0 then
            _chargedT = _chargedT - dt
            if _chargedT <= 0 then
                ShowTip("借力过期——刀力还给它了")
            end
        end
        _atkT = (_atkT or 1.4) - dt
        if _atkT <= 0 then
            _atkT = 1.4
            OnMyAttackTick()
        end
    end, 0.02)
end

SL:RegisterLUAEvent(LUA_EVENT_MONSTER_SWING, "RVB_Swing", function(data)
    if data and data.raw then
        OnMonsterSwing(data.raw)
    end
end)

SL:ScheduleOnce(function()
    ShowTip("技能已加载: 逆刃 (调试按钮触发)")
end, 1.0)

return ReverseBlade