影锁：影锁绑你绑它，锁期拼刀

 fx-shadowchain

-- @file ShadowChain.lua
-- 影锁 —— 影锁绑你绑它，锁期拼刀

local ShadowChain = {}

local CONST = {
    LOCK_LIFE     = 4.0,
    LOCK_CD       = 10.0,
    GRAB_RANGE    = 60,
    MY_DPS_TICK   = 0.5,
    MY_DMG        = 9,
    FOE_DPS_TICK  = 0.5,
    FOE_DMG       = 6,

    COLOR_CHAIN   = "#88b8e0",
    COLOR_DEEP    = "#1a3a6e",
    COLOR_GHOST   = "#dceaf8",

    ZORDER_CHAIN  = 129,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 980000,
}

local _lockT      = 0
local _myAtkT     = 0
local _foeAtkT    = 0
local _cdLeft     = 0
local _scheduler  = nil
local _autoInc    = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "SHC",
        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 CreateChainNode(midX)
    local node = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Chain"), midX, 0, 0, 0, false)
    GUI:setLocalZOrder(node, CONST.ZORDER_CHAIN)
    for i = 1, 30 do
        local a1 = (i - 1) / 30 * 6.28
        local a2 = i / 30 * 6.28
        GUI:DrawLine_Create(node, string.format("c_%d", i), 0, 0, 2,
            m_cos(a1) * 60, m_sin(a1) * 14,
            m_cos(a2) * 60, m_sin(a2) * 14,
            CONST.COLOR_CHAIN, 200)
    end
    return node
end

-- 错骨入口
function ShadowChain.Cast()
    if _cdLeft > 0 or _lockT > 0 then return end
    local mp = GetActorPos(SL:GetValue("USER_ID"))
    local tp = GetActorPos(SL:GetValue("MARK_TARGET_ID"))
    if not mp or not tp then return end
    if math.abs(mp.x - tp.x) > CONST.GRAB_RANGE then
        ShowTip("够不着——六十步内才能影锁")
        return
    end
    _cdLeft = CONST.LOCK_CD
    _lockT = CONST.LOCK_LIFE
    _myAtkT = CONST.MY_DPS_TICK
    _foeAtkT = CONST.FOE_DPS_TICK
    CreateChainNode((mp.x + tp.x) / 2)
    ShowTip("锁死了——四秒拼刀，你半秒九它半秒六
锁死了——四秒拼刀，你半秒九它半秒六。影锁的双圈也要做区分——你的锁环偏蓝、它的锁环偏灰，两圈的长短差就是拼刀的赔率表。")
end

-- 定时器：拼刀状态机
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _lockT <= 0 then return end
        _lockT = _lockT - dt
        _myAtkT = _myAtkT - dt
        if _myAtkT <= 0 then
            _myAtkT = CONST.MY_DPS_TICK
            SL:ActorHurt(SL:GetValue("MARK_TARGET_ID"), CONST.MY_DMG)
            SL:TipAbove(SL:GetValue("MARK_TARGET_ID"), "-" .. CONST.MY_DMG)
        end
        _foeAtkT = _foeAtkT - dt
        if _foeAtkT <= 0 then
            _foeAtkT = CONST.FOE_DPS_TICK
            SL:PlayerHurt(CONST.FOE_DMG)
            SL:TipAboveMe("-" .. CONST.FOE_DMG)
        end
        if _lockT <= 0 then
            ShowTip("锁开了——两边都松手")
        end
    end, 0.02)
end

SL:RegisterLUAEvent(LUA_EVENT_MONSTER_DEAD, "SHC_Dead", function()
    if _lockT > 0 then
        _lockT = 0
        ShowTip("它倒在了锁里——拼刀你赢了")
    end
end)

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

return ShadowChain