荆棘甲：荆棘甲反伤

 fx-thornarmor

-- @file ThornArmor.lua
-- 荆棘甲 —— 荆棘甲反伤，怪打你自找的

local ThornArmor = {}

local CONST = {
    THORN_LIFE    = 6.0,
    THORN_CD      = 5.0,
    THORN_DMG     = 30,

    COLOR_THORN   = "#c87878",
    COLOR_DEEP    = "#5e1a1a",
    COLOR_GHOST   = "#f4c0c0",

    ZORDER_THORN  = 132,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1071000,
}

local _thornT    = 0
local _cdLeft    = 0
local _thornFx   = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "TRA",
        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 ThornArmor.Cast()
    if _cdLeft > 0 or _thornT > 0 then return end
    local myID = SL:GetValue("USER_ID")
    if not myID then return end
    _cdLeft = CONST.THORN_CD
    _thornT = CONST.THORN_LIFE
    SafeRemove(_thornFx)
    _thornFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Thorn"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_thornFx, CONST.ZORDER_THORN)
    SL:PlayThornUpFx(myID)
    SL:TipAboveMe("荆棘甲！")
    ShowTip("荆棘甲穿上了——六秒反弹三十")
end

-- 反伤结算：荆棘甲期怪的攻击弹三十
SL:RegisterLUAEvent(LUA_EVENT_BEFORE_HURT, "TRA_Refl", function(tid, dmg)
    if _thornT > 0 and tid == SL:GetValue("USER_ID") and dmg > 0 then
        local attacker = SL:GetValue("ATTACKER_ID")
        if attacker and attacker ~= 0 then
            SL:ActorHurt(attacker, CONST.THORN_DMG)
            SL:TipAbove(attacker, "刺-30")
            SL:PlayThornReflectFx(attacker)
        end
    end
    return dmg
end)

-- 定时器：刺甲倒计时与刺甲动画
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _thornT > 0 then
            _thornT = _thornT - dt
            if _thornT <= 0 then
                SafeRemove(_thornFx)
                ShowTip("荆棘甲碎了——恢复血肉之躯")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("荆棘甲", function()
        ThornArmor.Cast()
    end)
    ShowTip("技能已加载: 荆棘甲 (调试按钮触发)")
end, 1.0)

function ThornArmor.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_BEFORE_HURT, "TRA_Refl")
    SafeRemove(_thornFx)
    _thornT = 0
end

return ThornArmor