吞刀：把它的刀含在嘴里，连本带利吐回去

 fx-bladecatch

-- @file BladeCatch.lua
-- 吞刀 —— 把它的刀含在嘴里，连本带利吐回去

local BladeCatch = {}

local CONST = {
    CATCH_WINDOW  = 1.0,
    CATCH_CD      = 5.0,
    SPIT_AMP      = 1.5,

    COLOR_BLADE   = "#c04868",
    COLOR_DEEP    = "#4e1220",
    COLOR_GHOST   = "#f0b0c0",

    ZORDER_MOUTH  = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1003000,
}

local _catchT    = 0
local _stored    = 0
local _cdLeft    = 0
local _mouthFx   = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "BCT",
        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 ShowMouthFx()
    local myID = SL:GetValue("USER_ID")
    SafeRemove(_mouthFx)
    _mouthFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Mouth"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_mouthFx, CONST.ZORDER_MOUTH)
    local mp = GetActorPos(myID)
    if mp then GUI:setPosition(_mouthFx, mp.x, mp.y - 56) end
end

function BladeCatch.OpenMouth()
    if _stored > 0 then
        BladeCatch.Spit()
        return
    end
    if _cdLeft > 0 or _catchT > 0 then return end
    _cdLeft = CONST.CATCH_CD
    _catchT = CONST.CATCH_WINDOW
    ShowMouthFx()
    SL:PlayMouthOpenFx()
    ShowTip("口张开了——一秒内它的刀尽管来")
end

-- 接刀判定：窗口内的近战整笔寄存
SL:RegisterLUAEvent(LUA_EVENT_MELEE_HIT, "BCT_Catch", function(tid, dmg)
    if _catchT > 0 and dmg and dmg > 0 then
        _catchT = 0
        _stored = dmg
        SafeRemove(_mouthFx)
        SL:PlayCatchFx()
        SL:TipAboveMe("接住了！")
        ShowTip("刀含住了——再点一下，连本带利吐回去")
        return 0
    end
    return dmg
end)

-- 吐刀出口
function BladeCatch.Spit()
    if _stored <= 0 then return end
    local tid = SL:GetValue("MARK_TARGET_ID")
    local tp = GetActorPos(tid)
    if not tp then return end
    local out = math.floor(_stored * CONST.SPIT_AMP)
    _stored = 0
    SL:ActorHurt(tid, out)
    SL:TipAbove(tid, "吐-" .. out)
    SL:PlaySpitFx(tid)
    SL:ScreenShake(3, 0.2)
    ShowTip("连本带利吐回去——" .. out .. "点入账")
end

-- 定时器：窗口推进与空口提示
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _catchT > 0 then
            _catchT = _catchT - dt
            if _catchT <= 0 then
                SafeRemove(_mouthFx)
                ShowTip("口合上了——空口而归，再等下一刀")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("吞刀", function()
        BladeCatch.OpenMouth()
    end)
    ShowTip("技能已加载: 吞刀 (调试按钮触发)")
end, 1.0)

function BladeCatch.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SafeRemove(_mouthFx)
    _stored = 0
end

return BladeCatch