双桩雷阵：两桩立起来，桩间就是雷区

 fx-twinpillar

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-- @file        TwinPillar.lua
-- @brief       引雷双桩 —— 两桩立起来，桩间就是雷区
--              客户端表现模块：配置表 / 桩体构件 / 走廊判定 / 定时器
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local TwinPillar = {}

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-- 配置与常量
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local CONST = {
    PILLAR_LIFE   = 8.0,        -- 桩立八秒
    PILLAR_CD     = 3.0,        -- 立桩冷却
    PILLAR_MAX    = 2,          -- 场上至多两根
    GAP_ONE       = 140,        -- 首桩在前一百四十步
    GAP_TWO       = 330,        -- 次桩在前三百三十步
    ZAP_GAP       = 1.0,        -- 走廊一秒一道雷
    ZAP_DMG       = 10,         -- 一道雷十点

    -- 颜色
    COLOR_BOLT    = "#d2a8ff",  -- 电紫
    COLOR_DEEP    = "#4a2a7a",  -- 深紫
    COLOR_GHOST   = "#efe4ff",  -- 电白

    ZORDER_GROUND = 118,
    ZORDER_PILLAR = 130,
    ZORDER_EFFECT = 135,

    AUTOINC_BASE  = 933000,
}

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-- 模块内部状态
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local _pillars   = {}            -- 桩表：至多两根
local _zapT      = 0             -- 雷的节拍
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 "TWP", CONST.AUTOINC_BASE + _autoInc)
end

local function GetActorPos(actorID)
    if not actorID then return nil end
    local x = SL:GetValue("ACTOR_POSITION_X", actorID)
    local y = SL:GetValue("ACTOR_POSITION_Y", actorID)
    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

---桩体构件：桩身加顶珠
local function CreatePillarNode(x, y)
    local node = GUI:Layout_Create(GUI:Attach_SceneF(), GenID("Pil"), x, y, 0, 0, false)
    GUI:setLocalZOrder(node, CONST.ZORDER_PILLAR)
    GUI:DrawLine_Create(node, "rod", 0, 0, 12, 0, 0, 0, -44, CONST.COLOR_DEEP, 240)
    GUI:DrawLine_Create(node, "tip", 0, 0, 6, 0, -44, 0, -52, CONST.COLOR_GHOST, 240)
    return node
end

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-- 走廊判定：横坐标区间
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local function InCorridor(x)
    if #_pillars < 2 then return false end
    local a = math.min(_pillars[1].x, _pillars[2].x)
    local b = math.max(_pillars[1].x, _pillars[2].x)
    return x >= a and x <= b
end

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-- 立桩
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function TwinPillar.Cast(myX)
    if _cdLeft > 0 then return end
    if #_pillars >= CONST.PILLAR_MAX then return end
    _cdLeft = CONST.PILLAR_CD
    local px = myX + (#_pillars == 0 and CONST.GAP_ONE or CONST.GAP_TWO)
    table.insert(_pillars, { x = px, node = CreatePillarNode(px, 0), t = CONST.PILLAR_LIFE })
    if #_pillars == 2 then
        ShowTip("走廊通了——引它进来走两步")
    else
        ShowTip("第一根立了——再立一根凑成走廊")
    end
end

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-- 定时器：雷的节拍与桩的寿命
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if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        for i = #_pillars, 1, -1 do
            local p = _pillars[i]
            p.t = p.t - dt
            if p.t <= 0 then
                SafeRemove(p.node)
                table.remove(_pillars, i)
                ShowTip("桩化了一根——走廊断了，重立")
            end
        end
        if #_pillars == 2 then
            _zapT = _zapT + dt
            if _zapT >= CONST.ZAP_GAP then
                _zapT = _zapT - CONST.ZAP_GAP
                local tid = SL:GetValue("MARK_TARGET_ID")
                local tp = tid and GetActorPos(tid)
                if tp and InCorridor(tp.x) then
                    SL:ActorHurt(tid, CONST.ZAP_DMG)
                    SL:TipAbove(tid, "-" .. CONST.ZAP_DMG)
                end
            end
        end
    end, 0.02)
end

SL:RegisterLUAEvent(LUA_EVENT_SCENE_CLEAR, "TWP_Clear", function()
    for i = #_pillars, 1, -1 do SafeRemove(_pillars[i].node) end
    _pillars = {}
end)

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

return TwinPillar