蜕壳：怪出生带三页硬壳，壳破四秒虚

 fx-shedshell

-- @file ShedShell.lua
-- 蜕壳 —— 怪出生带三页硬壳，壳破四秒虚

local ShedShell = {}

local CONST = {
    SHELL_PAGES   = 3,
    WEAK_LIFE     = 4.0,
    STUN_TIME     = 1.0,
    WEAK_AMP      = 1.2,

    COLOR_SHELL   = "#a89878",
    COLOR_DEEP    = "#4a3e22",
    COLOR_GHOST   = "#e8dcb8",

    ZORDER_SHELL  = 131,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1028000,
}

local _pages     = 0
local _weakT     = 0
local _weakID    = 0
local _shellFx   = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "SDS",
        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 OnSpawn(tid)
    _pages = CONST.SHELL_PAGES
    _weakID = tid
    SL:PlaySpawnShellFx(tid)
    SL:TipAbove(tid, "带壳出生")
    ShowTip("新的一只带着壳出生了——三刀破壳")
end

local function ShellBroken(tid)
    _pages = 0
    _weakT = CONST.WEAK_LIFE
    SL:StunActor(tid, CONST.STUN_TIME)
    SL:PlayShellBreakFx(tid)
    SL:ScreenShake(2.6, 0.18)
    SL:TipAbove(tid, "破壳虚")
    ShowTip("壳破了——它懵一顿，虚期挨刀加两成")
end

-- 壳页出口：有壳先撕页
SL:RegisterLUAEvent(LUA_EVENT_BEFORE_HURT, "SDS_Shell", function(tid, dmg)
    if _pages > 0 and tid == _weakID then
        _pages = _pages - 1
        SL:PlayShellCrackFx(tid)
        SL:TipAbove(tid, "壳裂")
        if _pages <= 0 then ShellBroken(tid) end
        return 0
    end
    return dmg
end)

-- 虚期出口：破壳后的刀乘一点二
SL:RegisterLUAEvent(LUA_EVENT_AFTER_HURT, "SDS_Weak", function(tid, dmg)
    if _weakT > 0 and tid == _weakID then
        return math.floor(dmg * CONST.WEAK_AMP)
    end
    return dmg
end)

-- 出生钩子：新怪的壳页发放
SL:RegisterLUAEvent(LUA_EVENT_ACTOR_SPAWN, "SDS_Born", function(tid)
    OnSpawn(tid)
end)

-- 定时器：虚期倒计时与壳弧跟脚
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        if _weakT > 0 then
            _weakT = _weakT - dt
            if _weakT <= 0 then
                ShowTip("虚劲过了——下一只照旧三刀破壳")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("催生", function()
        local tid = SL:GetValue("MARK_TARGET_ID")
        if tid then OnSpawn(tid) end
    end)
    ShowTip("技能已加载: 蜕壳 (调试按钮触发)")
end, 1.0)

function ShedShell.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_BEFORE_HURT, "SDS_Shell")
    SL:UnregisterLUAEvent(LUA_EVENT_AFTER_HURT, "SDS_Weak")
    SL:UnregisterLUAEvent(LUA_EVENT_ACTOR_SPAWN, "SDS_Born")
    SafeRemove(_shellFx)
end

return ShedShell